Andrea Braga

Dr. Andrea Braga

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Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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29 August 2022 in Nature Communications
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Journal Article
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NDNuria Divins
Nuria Divins
ABAndrea Braga
Andrea Braga
Xavier Vendrell VillafruelaXavier Vendrell Villafruela
Xavier Vendrell Villafruela
ISIsabel Serrano
Isabel Serrano
XGXènia Garcia
Xènia Garcia
Jordi LlorcaJordi Llorca
Jordi Llorca
Efficiently treating methane emissions in transportation remains a challenge. Here, we investigate palladium and platinum mono- and bimetallic ceria-supported catalysts synthesized by mechanical milling and by traditional impregnation for methane total oxidation under dry and wet conditions, reproducing those present in the exhaust of natural gas vehicles. By applying a toolkit of in situ synchrotron techniques (X-ray diffraction, X-ray absorption and ambient pressure photoelectron spectroscopies), together with transmission electron microscopy, we show that the synthesis method greatly influences the interaction and structure at the nanoscale. Our results reveal that the components of milled catalysts have a higher ability to transform metallic Pd into Pd oxide species strongly interacting with the support, and achieve a modulated PdO/Pd ratio than traditionally-synthesized catalysts. We demonstrate that the unique structures attained by milling are key for the catalytic activity and correlate with higher methane conversion and longer stability in the wet feed.

23 December 2023 in Applied Catalysis B: Environment and Energy
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Journal Article
Open access
MAMarina Armengol-Profitós
Marina Armengol-Profitós
ABAndrea Braga
Andrea Braga
LPLaia Pascua-Solé
Laia Pascua-Solé
ILIlaria Lucentini
Ilaria Lucentini
XGXènia Garcia
Xènia Garcia
Jordi LlorcaJordi Llorca
Jordi Llorca

30 January 2025 in Catalysis Science & Technology
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Journal Article
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AFAndrea Felli
Andrea Felli
ATAlessandra Toso
Alessandra Toso
ABAndrea Braga
Andrea Braga
SCSara Colussi
Sara Colussi
Marta BoaroMarta Boaro
Marta Boaro
Alessandro TrovarelliAlessandro Trovarelli
Alessandro Trovarelli
Under mild acid treatment, LaMnO3 generates different Mn oxide species segregated on a defective La1−xMnO3−δ perovskite. These MnOx/LaMnO3 nanocomposites shows superior CO oxidation activity compared to the pristine perovskite.

5 May 2025 in RSC Mechanochemistry
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ABAndrea Braga
Andrea Braga
MDMaila Danielis
Maila Danielis
SCSara Colussi
Sara Colussi
Alessandro TrovarelliAlessandro Trovarelli
Alessandro Trovarelli
Optimisation of milling parameters (precursor nature and milling intensity) for the preparation of Dual-Function Material (DFM) multi-component systems for CO2 capture and methanation by exploiting a statistical design of experiments approach.

14 December 2023 in Crystals
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MDMaila Danielis
Maila Danielis
ABAndrea Braga
Andrea Braga
NDNuria Divins
Nuria Divins
Jordi LlorcaJordi Llorca
Jordi Llorca
Alessandro TrovarelliAlessandro Trovarelli
Alessandro Trovarelli
SCSara Colussi
Sara Colussi
Mechanochemical synthesis for the preparation of bimetallic catalysts is gaining increasing interest, and in recent years, some important milestones have been reached. However, the complexity of mechanochemically prepared bimetallic supported catalysts still leaves many open questions that need a systematic approach to be solved. In this work, we summarize our experience of mechanochemically milling bimetallic catalysts, introducing some key parameters that should be taken into account, particularly the thermal stability and hydrophilicity of precursor salts, and the effect of the milling order, highlighting the differences with wet synthesis methods. Finally, we will provide some suggestions on the application of the design of experiments approach to the rationalization of the milling procedure for the preparation of supported bimetallic catalysts.

14 August 2025 in RSC Sustainability
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LMLoukia-Pantzechroula Merkouri
Loukia-Pantzechroula Merkouri
MDMaila Danielis
Maila Danielis
ABAndrea Braga
Andrea Braga
TRTomas Ramirez Reina
Tomas Ramirez Reina
ATAlessandro Trovarelli
Alessandro Trovarelli
MDMelis Duyar
Melis Duyar
Dual-function materials (DFMs) prepared by a sustainable dry milling procedure can efficiently capture CO2 and produce syngas by reforming with CH4. Yet, significant CH4 cracking also occurs, leading to carbon buildup and a high H2 : CO syngas ratio.