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The hydrothermal liquefaction reactions (HTL) in subcritical conditions of a lignin residue has been studied on a lab scale. The starting material was a lignin rich residue co-produced by an industrial plant situated in Northern Italy producing lignocellulosic bioethanol. The reactions were carried out in batch mode using stainless steel autoclaves. The experiments were under the following operating conditions: two different temperatures (300–350 °C), the presence of basis catalysts (NaOH, and NH4OH) in different concentrations and the presence/absence of capping agent 2,6-bis-(1,1-dimethylethyl)-4-methylphenol (BHT). Lignin residue and reaction products were characterized by analytical and spectroscopic techniques such as CHN-S, TGA, GC–MS, EPR, and 1H-NMR with (2,2,6,6-Tetramethylpiperidin-1-yl)oxyl (T.E.M.P.O.). The addition of BHT did not significantly affect the yield of char which is formed by radical way. Spectroscopic analysis indicated that the level of radicals during the reaction was negligible. Therefore, the results obtained experimentally suggest that the reaction takes place via an ionic route while radical species would play a minor role.
Benedetta Ciuffi; Massimiliano Loppi; Andrea Maria Rizzo; David Chiaramonti; Luca Rosi. Towards a better understanding of the HTL process of lignin-rich feedstock. Scientific Reports 2021, 11, 1 -9.
AMA StyleBenedetta Ciuffi, Massimiliano Loppi, Andrea Maria Rizzo, David Chiaramonti, Luca Rosi. Towards a better understanding of the HTL process of lignin-rich feedstock. Scientific Reports. 2021; 11 (1):1-9.
Chicago/Turabian StyleBenedetta Ciuffi; Massimiliano Loppi; Andrea Maria Rizzo; David Chiaramonti; Luca Rosi. 2021. "Towards a better understanding of the HTL process of lignin-rich feedstock." Scientific Reports 11, no. 1: 1-9.
Biochar properties are highly dependent on the feedstock type and operational conditions during thermochemical processing, in particular slow pyrolysis. To clarify this aspect, nine biochars were produced by pyrolyzing in a macro TGA at 400, 550, and 650 °C three different decorticated and chopped biomasses. The studied biomasses are representative of conifer (black pine) and deciduous (poplar and willow) woods. Biochar surface area, size, and shape of pores were investigated by means of nitrogen adsorption isotherm, Hg porosimetry, and electron microscopy. The results indicate that biochars with high surface area can be obtained at high temperature, especially starting from pine feedstock. Regarding porosity, micro-pores (1–10 nm) are not remarkably affected by the starting feedstocks, while macro-pores (> 10 nm) are strictly connected with the morphology of the starting wood. More than the surface area, we found a strong correlation between the chemical composition (elemental composition and FTIR) of the biochars and their retention and release capacity of ions (cation exchange capacity, CEC). The trend in the CEC, determined via coupled approach by spectrophotometric and ion chromatography, reveals that the increase in the processing temperature has the effect of reducing the number of functional groups able of exchanging the cations with the equilibrium solution. This work represents a step forward in the characterization of the char produced by pyrolysis of biomass thanks to the development of a multi-technique approach allowing to obtain a structure-property correlation of the biochars. Our results and experimental approach can help in the optimization of the parameters used in the preparation of these materials. Graphical abstract
Giovanni Ferraro; Giuditta Pecori; Luca Rosi; Lorenzo Bettucci; Emiliano Fratini; David Casini; Andrea Maria Rizzo; David Chiaramonti. Biochar from lab-scale pyrolysis: influence of feedstock and operational temperature. Biomass Conversion and Biorefinery 2021, 1 -11.
AMA StyleGiovanni Ferraro, Giuditta Pecori, Luca Rosi, Lorenzo Bettucci, Emiliano Fratini, David Casini, Andrea Maria Rizzo, David Chiaramonti. Biochar from lab-scale pyrolysis: influence of feedstock and operational temperature. Biomass Conversion and Biorefinery. 2021; ():1-11.
Chicago/Turabian StyleGiovanni Ferraro; Giuditta Pecori; Luca Rosi; Lorenzo Bettucci; Emiliano Fratini; David Casini; Andrea Maria Rizzo; David Chiaramonti. 2021. "Biochar from lab-scale pyrolysis: influence of feedstock and operational temperature." Biomass Conversion and Biorefinery , no. : 1-11.
Oxygen Reduction Reaction (ORR) catalysts, from waste automobile tyres obtained from Microwave assisted pyrolysis (MAP), were enriched with Co and Cu using the simple treatments sonochemical and electrochemical deposition. Catalytic activity was evaluated through onset potential and number of exchanged electrons measurements. Electrochemical data demonstrate an improvement in catalytic activity of the electrochemical modified char with Co. Char electrodes enriched with Co show a maximum positive shift of 40 mV with respect to raw char electrodes with a number of exchanged electrons per O2 molecule close to 4 (as for Pt) for the best sample. This corresponds to a reduction of the production of unwanted oxygen peroxide from 23% for raw char to 1%. Sample structure evolution before and after electrochemical deposition and electro-catalysis was investigated by scanning transmission electron microscopy and XPS. Such electrochemical treatments open new possibilities of refining waste chars and finding an economic alternative to noble metals-based catalysts for alkaline fuel cells.
Maurizio Passaponti; Leonardo Lari; Marco Bonechi; Francesca Bruni; Walter Giurlani; Gabriele Sciortino; Luca Rosi; Lorenzo Fabbri; Martina Vizza; Vlado Lazarov; Claudio Fontanesi; Massimo Innocenti. Optimisation Study of Co Deposition on Chars from MAP of Waste Tyres as Green Electrodes in ORR for Alkaline Fuel Cells. Energies 2020, 13, 5646 .
AMA StyleMaurizio Passaponti, Leonardo Lari, Marco Bonechi, Francesca Bruni, Walter Giurlani, Gabriele Sciortino, Luca Rosi, Lorenzo Fabbri, Martina Vizza, Vlado Lazarov, Claudio Fontanesi, Massimo Innocenti. Optimisation Study of Co Deposition on Chars from MAP of Waste Tyres as Green Electrodes in ORR for Alkaline Fuel Cells. Energies. 2020; 13 (21):5646.
Chicago/Turabian StyleMaurizio Passaponti; Leonardo Lari; Marco Bonechi; Francesca Bruni; Walter Giurlani; Gabriele Sciortino; Luca Rosi; Lorenzo Fabbri; Martina Vizza; Vlado Lazarov; Claudio Fontanesi; Massimo Innocenti. 2020. "Optimisation Study of Co Deposition on Chars from MAP of Waste Tyres as Green Electrodes in ORR for Alkaline Fuel Cells." Energies 13, no. 21: 5646.
End of life packaging is nowadays one of the major environmental problems due to its short usage time, the low biodegradability, and the big volume occupied. In this context, gasification is one of the most promising chemical recycling techniques. Some non-recyclable or non-compostable waste gasification plants are already operating such as Enerkem Alberta Biofuels in Canada or the Sierra’s FastOx Pathfinder in California. In this review, we have examined works about plastic gasification from the last fifteen years with a specific focus on polyolefin (PP, PE), plastics mix, and co-gasification of plastic with biomass. For each of these, the best operating conditions were investigated. A very in-depth section was dedicated to supercritical water gasification (SCWG). The most used reactors in gasification processes are fluidized bed reactors together with air or steam as gasifying agents. Tar removal is commonly performed using olivine, dolomite, or nickel based catalysts. SCWG has numerous advantages including the inhibition of tar and coke formation and can be used to remove microplastics from the marine environment. In co-gasification of plastic material with coal or biomass, synergistic effects are observed between the raw materials, which improve the performance of the process, allowing to obtain higher gas yields and a syngas with a high energy content.
Benedetta Ciuffi; David Chiaramonti; Andrea Maria Rizzo; Marco Frediani; Luca Rosi. A Critical Review of SCWG in the Context of Available Gasification Technologies for Plastic Waste. Applied Sciences 2020, 10, 6307 .
AMA StyleBenedetta Ciuffi, David Chiaramonti, Andrea Maria Rizzo, Marco Frediani, Luca Rosi. A Critical Review of SCWG in the Context of Available Gasification Technologies for Plastic Waste. Applied Sciences. 2020; 10 (18):6307.
Chicago/Turabian StyleBenedetta Ciuffi; David Chiaramonti; Andrea Maria Rizzo; Marco Frediani; Luca Rosi. 2020. "A Critical Review of SCWG in the Context of Available Gasification Technologies for Plastic Waste." Applied Sciences 10, no. 18: 6307.
End functionalized polylactides are prepared by ring opening polymerization of L-lactide in the presence of stannous octoate (Sn(Oct)2). Three chromophores, 9H-carbazol-ethanol (CA), 9-fluorenyl-methanol (FM), and 2-(4-(2-chloro-4-nitrophenylazo)-N-ethylphenylamino)ethanol (Disperse Red 13, DR), are for the first time used as co-initiators in the polymerization process. The polymerization reaction is initiated by conventional thermal treatment, but in the case of FM, microwave-assisted polymerization is also carried out. CA and FM absorb and emit in the UV portion of the electromagnetic spectrum, whereas DR absorbs in the visible part. The obtained end-capped polylactides derivatives show the same photophysical properties as the initiator, so they are “macromolecular dyes” (MDs) that can be used “as synthesized” or can be blended with commercial poly(lactic acid) (PLA). The blends of PLA with MDs have ultraviolet-visible (UV-Vis) absorption and fluorescence emission features similar to that of MDs and thermal properties typical of PLA. Finally, migration tests, carried out onto the blends of PLA with MDs and PLA with free chromophores, show that MDs are less released than free chromophores both in solution and in the solid phase.
Francesca Cicogna; Guido Giachi; Luca Rosi; Elisa Passaglia; Serena Coiai; Roberto Spiniello; Federico Prescimone; Marco Frediani. Macromolecular Dyes by Chromophore-Initiated Ring Opening Polymerization of L-Lactide. Polymers 2020, 12, 1979 .
AMA StyleFrancesca Cicogna, Guido Giachi, Luca Rosi, Elisa Passaglia, Serena Coiai, Roberto Spiniello, Federico Prescimone, Marco Frediani. Macromolecular Dyes by Chromophore-Initiated Ring Opening Polymerization of L-Lactide. Polymers. 2020; 12 (9):1979.
Chicago/Turabian StyleFrancesca Cicogna; Guido Giachi; Luca Rosi; Elisa Passaglia; Serena Coiai; Roberto Spiniello; Federico Prescimone; Marco Frediani. 2020. "Macromolecular Dyes by Chromophore-Initiated Ring Opening Polymerization of L-Lactide." Polymers 12, no. 9: 1979.
The aim of the present work is to investigate the possibility of producing activated carbons from the residual lignin stream of lignocellulosic ethanol biorefineries, as this represents an optimal opportunity to exploit a residual and renewable material in the perspective of sustainable bioeconomy, increasing biorefinery incomes by producing value-added bioproducts in conjunction with biofuels. Activated carbons (ACs) were produced via chemical (KOH) and physical (CO2) activation. Char samples were obtained by slow pyrolysis (SP) and hydrothermal carbonization (HTC). Several HTC experiments were carried out by varying residence time (0.5–3 h) and reaction temperature (200–270 °C), in order to evaluate their influence on the product yield and on the morphological characteristics of the hydrochar (specific surface area, total pore volume and pore size distribution). ACs from hydrochars were compared with those obtained from pyrochar (via physical activation) and from the raw lignin-rich stream (via chemical activation). In both cases, by increasing the HTC temperature, the specific surface of the resulting activated carbons decreased from 630 to 77 m2 g−1 for physical activation and from 675 to 81 m2 g−1 for chemical activation, indicating that an increase in the severity of the hydrothermal pretreatment is deleterious for the activated carbons quality. In addition, the HTC aqueous samples were analyzed, with GC-MS and GC-FID. The results suggest that at low temperatures the reaction mechanisms are dominated by hydrolysis, instead when the temperature is increased to 270 °C, a more complex network of reactions takes place among which decarboxylation.
Edoardo Miliotti; Luca Rosi; Lorenzo Bettucci; Giulia Lotti; Andrea Maria Rizzo; David Chiaramonti. Characterization of Chemically and Physically Activated Carbons from Lignocellulosic Ethanol Lignin-Rich Stream via Hydrothermal Carbonization and Slow Pyrolysis Pretreatment. Energies 2020, 13, 4101 .
AMA StyleEdoardo Miliotti, Luca Rosi, Lorenzo Bettucci, Giulia Lotti, Andrea Maria Rizzo, David Chiaramonti. Characterization of Chemically and Physically Activated Carbons from Lignocellulosic Ethanol Lignin-Rich Stream via Hydrothermal Carbonization and Slow Pyrolysis Pretreatment. Energies. 2020; 13 (16):4101.
Chicago/Turabian StyleEdoardo Miliotti; Luca Rosi; Lorenzo Bettucci; Giulia Lotti; Andrea Maria Rizzo; David Chiaramonti. 2020. "Characterization of Chemically and Physically Activated Carbons from Lignocellulosic Ethanol Lignin-Rich Stream via Hydrothermal Carbonization and Slow Pyrolysis Pretreatment." Energies 13, no. 16: 4101.
Every year approximately 50 million tonnes of lignin are obtained worldwide as by-products of the paper industry and represent a potential renewable aromatic feedstock for a sustainable future carbon economy. In spite of this the availability of lignin remains largely unused so long the most part of it (ca. 98%) is still burned. For this reason pyrolysis-based technologies, such as fast pyrolysis and gasification, are considered promising methods for converting lignin into biochemicals, biomaterials, and biofuels. In this work the pyrolysis of kraft lignin were studied at reduced pressure under Microwave Assisted Pyrolysis (MAP). Experiments were carried out at different pressure (1 bar, 0.13 bar, 0.013 bar) also using a fractionating system. A multimode MW (Microwave) batch reactor was employed as oven using carbon as MW absorber. The most relevant achievements were gained at residual pressure of 0.013 kPa obtaining a 37 wt% of bio-oil in 9 min. Compositions of bio-oils were evaluated through 1H NMR, FT-IR ATR and a quantitative GC–MS method. Analysis showed high concentration of multisubstituted aromatic ring and light linear/cyclic compounds (C2-C5) from advanced thermal degradation of side chains of the lignin structure.
Mattia Bartoli; Luca Rosi; Piero Frediani; Marco Frediani. Bio-oils from microwave assisted pyrolysis of kraft lignin operating at reduced residual pressure. Fuel 2020, 278, 118175 .
AMA StyleMattia Bartoli, Luca Rosi, Piero Frediani, Marco Frediani. Bio-oils from microwave assisted pyrolysis of kraft lignin operating at reduced residual pressure. Fuel. 2020; 278 ():118175.
Chicago/Turabian StyleMattia Bartoli; Luca Rosi; Piero Frediani; Marco Frediani. 2020. "Bio-oils from microwave assisted pyrolysis of kraft lignin operating at reduced residual pressure." Fuel 278, no. : 118175.
Microwave-assisted pyrolysis is a promising thermochemical technique to convert waste polymers and biomass into raw chemicals and fuels. However, this process involves several issues related to the interactions between materials and microwaves. Consequently, the control of temperature during microwave-assisted pyrolysis is a hard task both for measurement and uniformity during the overall pyrolytic run. In this review, we introduce some of the main theoretical aspects of the microwaves–materials interactions alongside the issues related to microwave pyrolytic processability of materials.
Mattia Bartoli; Marco Frediani; Cedric Briens; Franco Berruti; Luca Rosi. An Overview of Temperature Issues in Microwave-Assisted Pyrolysis. Processes 2019, 7, 658 .
AMA StyleMattia Bartoli, Marco Frediani, Cedric Briens, Franco Berruti, Luca Rosi. An Overview of Temperature Issues in Microwave-Assisted Pyrolysis. Processes. 2019; 7 (10):658.
Chicago/Turabian StyleMattia Bartoli; Marco Frediani; Cedric Briens; Franco Berruti; Luca Rosi. 2019. "An Overview of Temperature Issues in Microwave-Assisted Pyrolysis." Processes 7, no. 10: 658.
Mattia Bartoli; Luca Rosi; Marco Frediani. Introductory Chapter: A Brief Insight about Glycerol. Glycerine Production and Transformation - An Innovative Platform for Sustainable Biorefinery and Energy 2019, 1 .
AMA StyleMattia Bartoli, Luca Rosi, Marco Frediani. Introductory Chapter: A Brief Insight about Glycerol. Glycerine Production and Transformation - An Innovative Platform for Sustainable Biorefinery and Energy. 2019; ():1.
Chicago/Turabian StyleMattia Bartoli; Luca Rosi; Marco Frediani. 2019. "Introductory Chapter: A Brief Insight about Glycerol." Glycerine Production and Transformation - An Innovative Platform for Sustainable Biorefinery and Energy , no. : 1.
The synthesis of a bipyridine poly(lactic acid) carboxylic end-capped macroligand coordinated to a platinum center was reported. The reaction between the metal ion and the polymeric ligand was run in a very efficient way through a one-step synthesis and the complex was tested for selective hydrogenation of α,β-carbonyl compounds. High selectivity was proven for double bond hydrogenation of 2-cyclohexen-1-one (up to 99%) and the production of 1-butanol from (E)-but-2-enal. Moreover, the catalytic system was still active after three catalytic cycles.
Mattia Bartoli; Luca Rosi; Benedetta Mini; Giorgio Petrucci; Elisa Passaglia; Marco Frediani. Catalytic Performances of Platinum Containing PLLA Macrocomplex in the Hydrogenation of α,β-Unsaturated Carbonyl Compounds. Applied Sciences 2019, 9, 3243 .
AMA StyleMattia Bartoli, Luca Rosi, Benedetta Mini, Giorgio Petrucci, Elisa Passaglia, Marco Frediani. Catalytic Performances of Platinum Containing PLLA Macrocomplex in the Hydrogenation of α,β-Unsaturated Carbonyl Compounds. Applied Sciences. 2019; 9 (16):3243.
Chicago/Turabian StyleMattia Bartoli; Luca Rosi; Benedetta Mini; Giorgio Petrucci; Elisa Passaglia; Marco Frediani. 2019. "Catalytic Performances of Platinum Containing PLLA Macrocomplex in the Hydrogenation of α,β-Unsaturated Carbonyl Compounds." Applied Sciences 9, no. 16: 3243.
The recycling of scrap automotive tires is made difficult by a number of factors. They are composed of a complex matrix that includes hazardous materials, not to mention a gigantic annual production rate. Herein we report a novel approach tackling the recovery and valorization of chars, the least valuable by-product of waste-tire pyrolysis, through the transformation into highly efficient Oxygen Reduction Reaction (ORR) catalysts for use in alkaline fuel cells and metal air batteries. The study has been performed on chars obtained from Microwave Assisted Pyrolysis (MAP). Each sample has been characterized by metal content (ICP-MS), specific surface area (BET), porosity, crystallinity and nature of inorganic components embedded in the carbonaceous matrix (XRPD). The most promising samples exhibit an ORR onset potential of −90 mV (RHE) and a 4e− mechanism. Two main factors are found to contribute to the enhanced ORR activity. Firstly, a large specific surface area and porosity and secondly the presence of a high concentration of ZnO particles embedded within the carbon matrix.
Maurizio Passaponti; Luca Rosi; Matteo Savastano; Walter Giurlani; Hamish A. Miller; Alessandro Lavacchi; Jonathan Filippi; Giovanni Zangari; Francesco Vizza; Massimo Innocenti. Recycling of waste automobile tires: Transforming char in oxygen reduction reaction catalysts for alkaline fuel cells. Journal of Power Sources 2019, 427, 85 -90.
AMA StyleMaurizio Passaponti, Luca Rosi, Matteo Savastano, Walter Giurlani, Hamish A. Miller, Alessandro Lavacchi, Jonathan Filippi, Giovanni Zangari, Francesco Vizza, Massimo Innocenti. Recycling of waste automobile tires: Transforming char in oxygen reduction reaction catalysts for alkaline fuel cells. Journal of Power Sources. 2019; 427 ():85-90.
Chicago/Turabian StyleMaurizio Passaponti; Luca Rosi; Matteo Savastano; Walter Giurlani; Hamish A. Miller; Alessandro Lavacchi; Jonathan Filippi; Giovanni Zangari; Francesco Vizza; Massimo Innocenti. 2019. "Recycling of waste automobile tires: Transforming char in oxygen reduction reaction catalysts for alkaline fuel cells." Journal of Power Sources 427, no. : 85-90.
Hydrothermal liquefaction of lignin-rich stream from lignocellulosic ethanol production at an industrial scale was carried out in a custom-made batch test bench. Light and heavy fractions of the HTL biocrude were collected following an ad-hoc developed two-steps solvent extraction method. A full factorial design of experiment was performed, investigating the influence of temperature, time and biomass-to-water mass ratio (B/W) on product yields, biocrude elemental composition, molecular weight and carbon balance. Total biocrude yields ranged from 39.8% to 65.7% w/w. The Temperature was the main influencing parameter as regards the distribution between the light and heavy fractions of the produced biocrude: the highest amount of heavy biocrude was recovered at 300 °C, while at 350 and 370 °C the yield of the light fraction increased, reaching 41.7% w/w at 370 °C. Instead, the B/W ratio did not have a significant effect on light and heavy biocrude yields. Feedstock carbon content was mainly recovered in the biocrude (up to 77.6% w/w). The distribution between the light and heavy fractions followed the same trend as the yields. The typical aromatic structure of the lignin-rich stream was also observed in the biocrudes, indicating that mainly hydrolysis depolymerization occurred. The weight-average molecular weight of the total biocrude was strictly related to the process temperature, decreasing from 1146 at 300 °C to 565 g mol−1 at 370 °C.
Edoardo Miliotti; Stefano Dell’Orco; Giulia Lotti; Andrea Maria Rizzo; Luca Rosi; David Chiaramonti. Lignocellulosic Ethanol Biorefinery: Valorization of Lignin-Rich Stream through Hydrothermal Liquefaction. Energies 2019, 12, 723 .
AMA StyleEdoardo Miliotti, Stefano Dell’Orco, Giulia Lotti, Andrea Maria Rizzo, Luca Rosi, David Chiaramonti. Lignocellulosic Ethanol Biorefinery: Valorization of Lignin-Rich Stream through Hydrothermal Liquefaction. Energies. 2019; 12 (4):723.
Chicago/Turabian StyleEdoardo Miliotti; Stefano Dell’Orco; Giulia Lotti; Andrea Maria Rizzo; Luca Rosi; David Chiaramonti. 2019. "Lignocellulosic Ethanol Biorefinery: Valorization of Lignin-Rich Stream through Hydrothermal Liquefaction." Energies 12, no. 4: 723.
Microwave Assisted Pyrolysis (MAP) of the plastic fraction of Waste from Electric and Electronic Equipment (WEEE) from end-life computers was run with different absorbers and set-ups in a multimode batch reactor. A large amount of various different liquid fractions (up to 76.6wt%) were formed together with a remarkable reduction of the solid residue (up to 14.2wt%). The liquid fractions were characterized using the following different techniques: FT-IR ATR, H NMR and a quantitative GC-MS analysis. The liquid fractions showed low density and viscosity, together with a high concentration of useful chemicals such as styrene (up to 117.7mg/mL), xylenes (up to 25.6mg/mL for p-xylene) whereas halogenated compounds were absent or present in a very low amounts.
Luca Rosi; Mattia Bartoli; Marco Frediani. Microwave assisted pyrolysis of halogenated plastics recovered from waste computers. Waste Management 2018, 73, 511 -522.
AMA StyleLuca Rosi, Mattia Bartoli, Marco Frediani. Microwave assisted pyrolysis of halogenated plastics recovered from waste computers. Waste Management. 2018; 73 ():511-522.
Chicago/Turabian StyleLuca Rosi; Mattia Bartoli; Marco Frediani. 2018. "Microwave assisted pyrolysis of halogenated plastics recovered from waste computers." Waste Management 73, no. : 511-522.
Mattia Bartoli; Luca Rosi; Alessio Giovannelli; Piero Frediani; Maurizio Passaponti; Marco Frediani. Microwave assisted pyrolysis of crop residues from Vitis vinifera. Journal of Analytical and Applied Pyrolysis 2018, 130, 305 -313.
AMA StyleMattia Bartoli, Luca Rosi, Alessio Giovannelli, Piero Frediani, Maurizio Passaponti, Marco Frediani. Microwave assisted pyrolysis of crop residues from Vitis vinifera. Journal of Analytical and Applied Pyrolysis. 2018; 130 ():305-313.
Chicago/Turabian StyleMattia Bartoli; Luca Rosi; Alessio Giovannelli; Piero Frediani; Maurizio Passaponti; Marco Frediani. 2018. "Microwave assisted pyrolysis of crop residues from Vitis vinifera." Journal of Analytical and Applied Pyrolysis 130, no. : 305-313.
A comparative evaluation of traditional and innovative coatings for outdoor bronze surfaces was carried out, including blending or pre-treatment with non-toxic corrosion inhibitors on bare and patinated bronze surfaces to simulate both as cast and aged surfaces. Coatings recently applied in bronze conservation practice, commercially available coatings and an innovative end-capped poly(lactic acid) with a benzotriazole (BTA) moiety have been tested, as well as a triple-layer system (wax/acrylic polymer/wax). BTA, single-layer Soter wax, and double layer Incral44/Soter wax were used as a reference. The products were evaluated in terms of aesthetic features, molecular structure, and corrosion protection by means of colorimetric, spectroscopic, and electrochemical tests. All inhibitors showed similar or significantly better results compared to BTA. In particular, sodium oleate and tolyltriazole could be considered as promising lower-toxicity alternatives to BTA, while the triple-layer coating applied without pre-filming inhibitors proved to give a very high protection against corrosion. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46011.
Barbara Salvadori; Andrea Cagnini; Monica Galeotti; Simone Porcinai; Sara Goidanich; Antonello Vicenzo; Claudio Celi; Piero Frediani; Luca Rosi; Marco Frediani; Giulia Giuntoli; Laura Brambilla; Ruben Beltrami; Stefano Trasatti. Traditional and innovative protective coatings for outdoor bronze: Application and performance comparison. Journal of Applied Polymer Science 2017, 135, 46011 .
AMA StyleBarbara Salvadori, Andrea Cagnini, Monica Galeotti, Simone Porcinai, Sara Goidanich, Antonello Vicenzo, Claudio Celi, Piero Frediani, Luca Rosi, Marco Frediani, Giulia Giuntoli, Laura Brambilla, Ruben Beltrami, Stefano Trasatti. Traditional and innovative protective coatings for outdoor bronze: Application and performance comparison. Journal of Applied Polymer Science. 2017; 135 (12):46011.
Chicago/Turabian StyleBarbara Salvadori; Andrea Cagnini; Monica Galeotti; Simone Porcinai; Sara Goidanich; Antonello Vicenzo; Claudio Celi; Piero Frediani; Luca Rosi; Marco Frediani; Giulia Giuntoli; Laura Brambilla; Ruben Beltrami; Stefano Trasatti. 2017. "Traditional and innovative protective coatings for outdoor bronze: Application and performance comparison." Journal of Applied Polymer Science 135, no. 12: 46011.
Marco Frediani; Werner Oberhauser; Elisa Passaglia; Luca Rosi; Damiano Bandelli; Mattia Bartoli; Giorgio Petrucci. Pyridine and Bipyridine End-Functionalized Polylactide: Synthesis and Catalytic Applications. Handbook of Composites from Renewable Materials 2017, 47 -67.
AMA StyleMarco Frediani, Werner Oberhauser, Elisa Passaglia, Luca Rosi, Damiano Bandelli, Mattia Bartoli, Giorgio Petrucci. Pyridine and Bipyridine End-Functionalized Polylactide: Synthesis and Catalytic Applications. Handbook of Composites from Renewable Materials. 2017; ():47-67.
Chicago/Turabian StyleMarco Frediani; Werner Oberhauser; Elisa Passaglia; Luca Rosi; Damiano Bandelli; Mattia Bartoli; Giorgio Petrucci. 2017. "Pyridine and Bipyridine End-Functionalized Polylactide: Synthesis and Catalytic Applications." Handbook of Composites from Renewable Materials , no. : 47-67.
Werner Oberhauser; Claudio Evangelisti; Cristina Tiozzo; Mattia Bartoli; Marco Frediani; Elisa Passaglia; Luca Rosi. Platinum nanoparticles onto pegylated poly(lactic acid) stereocomplex for highly selective hydrogenation of aromatic nitrocompounds to anilines. Applied Catalysis A: General 2017, 537, 50 -58.
AMA StyleWerner Oberhauser, Claudio Evangelisti, Cristina Tiozzo, Mattia Bartoli, Marco Frediani, Elisa Passaglia, Luca Rosi. Platinum nanoparticles onto pegylated poly(lactic acid) stereocomplex for highly selective hydrogenation of aromatic nitrocompounds to anilines. Applied Catalysis A: General. 2017; 537 ():50-58.
Chicago/Turabian StyleWerner Oberhauser; Claudio Evangelisti; Cristina Tiozzo; Mattia Bartoli; Marco Frediani; Elisa Passaglia; Luca Rosi. 2017. "Platinum nanoparticles onto pegylated poly(lactic acid) stereocomplex for highly selective hydrogenation of aromatic nitrocompounds to anilines." Applied Catalysis A: General 537, no. : 50-58.
Palladium nanoparticles, generated by hydrogen reduction of Pd acetate, coordinated to a stereocomplexed 2,2′-bipyridine end-functionalized poly(lactic acid)-poly(ε-caprolactone) copolymer showed enhanced catalytic activity and chemoselectivity for the partial reduction of phenylacetylene compared to the reference system which did not contain the poly(ε-caprolactone). The obtained heterogeneous catalyst proved to be recyclable and suitable for selective phenylacetylene hydrogenation to styrene in solution and under solventless conditions.
Marco Frediani; Werner Oberhauser; Luca Rosi; Mattia Bartoli; Elisa Passaglia; Laura Capozzoli. Palladium nanoparticles supported onto stereocomplexed poly(lactic acid)-poly(?-caprolactone) copolymers for selective partial hydrogenation of phenylacetylene. Rendiconti Lincei. Scienze Fisiche e Naturali 2017, 28, 51 -58.
AMA StyleMarco Frediani, Werner Oberhauser, Luca Rosi, Mattia Bartoli, Elisa Passaglia, Laura Capozzoli. Palladium nanoparticles supported onto stereocomplexed poly(lactic acid)-poly(?-caprolactone) copolymers for selective partial hydrogenation of phenylacetylene. Rendiconti Lincei. Scienze Fisiche e Naturali. 2017; 28 (1):51-58.
Chicago/Turabian StyleMarco Frediani; Werner Oberhauser; Luca Rosi; Mattia Bartoli; Elisa Passaglia; Laura Capozzoli. 2017. "Palladium nanoparticles supported onto stereocomplexed poly(lactic acid)-poly(?-caprolactone) copolymers for selective partial hydrogenation of phenylacetylene." Rendiconti Lincei. Scienze Fisiche e Naturali 28, no. 1: 51-58.
Marco Frediani; Werner Oberhauser; Luca Rosi; Elisa Passaglia And Mattia Bartoli. Palladium‐Based Catalysts‐Supported onto End‐Functionalized Poly(lactide) for C–C Double and Triple Bond Hydrogenation Reactions. New Advances in Hydrogenation Processes - Fundamentals and Applications 2017, 1 .
AMA StyleMarco Frediani, Werner Oberhauser, Luca Rosi, Elisa Passaglia And Mattia Bartoli. Palladium‐Based Catalysts‐Supported onto End‐Functionalized Poly(lactide) for C–C Double and Triple Bond Hydrogenation Reactions. New Advances in Hydrogenation Processes - Fundamentals and Applications. 2017; ():1.
Chicago/Turabian StyleMarco Frediani; Werner Oberhauser; Luca Rosi; Elisa Passaglia And Mattia Bartoli. 2017. "Palladium‐Based Catalysts‐Supported onto End‐Functionalized Poly(lactide) for C–C Double and Triple Bond Hydrogenation Reactions." New Advances in Hydrogenation Processes - Fundamentals and Applications , no. : 1.
A new and simple protocol for quantitative analysis of bio-oils using gas-chromatography/mass spectrometry is suggested. Compounds were identified via their mass spectra, and then unavailable response factors were calculated with respect to diphenyl as the internal standard using a modified method previously suggested for gas chromatography with flame ionization detection. This new protocol was applied to the characterization of bio-oils obtained from the pyrolysis of woods of different sources or using different pyrolysis procedures. This protocol allowed evaluation of the yields of products from poplar pyrolysis (among 50% and 99%), while a reduced amounts of products were identified from the pyrolysis of cellulose (between 46% and 58%). The main product was always acetic acid, but it was formed in very large yields from poplar while lower yields were obtained from cellulose.
Mattia Bartoli; Luca Rosi; Marco Frediani; Piero Frediani. A Simple Protocol for Quantitative Analysis of Bio-Oils through Gas-Chromatography/Mass Spectrometry. European Journal of Mass Spectrometry 2016, 22, 199 -212.
AMA StyleMattia Bartoli, Luca Rosi, Marco Frediani, Piero Frediani. A Simple Protocol for Quantitative Analysis of Bio-Oils through Gas-Chromatography/Mass Spectrometry. European Journal of Mass Spectrometry. 2016; 22 (4):199-212.
Chicago/Turabian StyleMattia Bartoli; Luca Rosi; Marco Frediani; Piero Frediani. 2016. "A Simple Protocol for Quantitative Analysis of Bio-Oils through Gas-Chromatography/Mass Spectrometry." European Journal of Mass Spectrometry 22, no. 4: 199-212.