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Tatiana Medvedeva
Federal Research Center Boreskov Institute of Catalysis SB RAS, Lavrentieva Ave. 5, 630090 Novosibirsk, Russia

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Journal article
Published: 20 July 2021 in Catalysts
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We explored the photoreforming of rice and corn starch with simultaneous hydrogen production over a Cd0.7Zn0.3S-based photocatalyst under visible light irradiation. The photocatalyst was characterized by UV–vis diffuse reflectance spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The influence of starch pretreatment conditions, such as hydrolysis temperature and alkaline concentration, on the reaction rate was studied. The maximum rate of H2 evolution was 730 μmol·h−1·g−1, with AQE = 1.8% at 450 nm, in the solution obtained after starch hydrolysis in 5 M NaOH at 70 °C. The composition of the aqueous phase of the suspension before and after the photocatalytic reaction was studied via high-performance liquid chromatography, and such products as glucose and sodium gluconate, acetate, formate, glycolate, and lactate were found after the photocatalytic reaction.

ACS Style

Anna Kurenkova; Tatiana Medvedeva; Nikolay Gromov; Andrey Bukhtiyarov; Evgeny Gerasimov; Svetlana Cherepanova; Ekaterina Kozlova. Sustainable Hydrogen Production from Starch Aqueous Suspensions over a Cd0.7Zn0.3S-Based Photocatalyst. Catalysts 2021, 11, 870 .

AMA Style

Anna Kurenkova, Tatiana Medvedeva, Nikolay Gromov, Andrey Bukhtiyarov, Evgeny Gerasimov, Svetlana Cherepanova, Ekaterina Kozlova. Sustainable Hydrogen Production from Starch Aqueous Suspensions over a Cd0.7Zn0.3S-Based Photocatalyst. Catalysts. 2021; 11 (7):870.

Chicago/Turabian Style

Anna Kurenkova; Tatiana Medvedeva; Nikolay Gromov; Andrey Bukhtiyarov; Evgeny Gerasimov; Svetlana Cherepanova; Ekaterina Kozlova. 2021. "Sustainable Hydrogen Production from Starch Aqueous Suspensions over a Cd0.7Zn0.3S-Based Photocatalyst." Catalysts 11, no. 7: 870.

Originalpaper
Published: 01 January 2021 in Catalysis in Industry
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The paper presents the results of studies of catalytic properties of cesium salts of heteropoly acids Cs4–хHхSiW12O40 (x = 3 and 3.5), Cs3–хHхPMo12O40 and Cs3–хHхPW12O40 (x = 2 and 2.5) for hydrolysis of cellulose to glucose at 180°C under argon atmosphere. Glucose is shown to be the main reaction product. The maximum hourly yield equal to 23% is observed in the presence of Cs3HSiW12O40. It is assumed that the catalyst efficiency is affected by the specific surface area. It is established that both heterogeneous and homogeneous processes occur in the presence of the salts due to leaching of the active component to the solution. The prepared salts are demonstrated to be more efficient than systems reported previously in literature.

ACS Style

N. V. Gromov; T. B. Medvedeva; O. P. Taran; M. N. Timofeeva; V. N. Parmon. Hydrolysis of Cellulose in the Presence of Catalysts Based on Cesium Salts of Heteropoly Acids. Catalysis in Industry 2021, 13, 73 -80.

AMA Style

N. V. Gromov, T. B. Medvedeva, O. P. Taran, M. N. Timofeeva, V. N. Parmon. Hydrolysis of Cellulose in the Presence of Catalysts Based on Cesium Salts of Heteropoly Acids. Catalysis in Industry. 2021; 13 (1):73-80.

Chicago/Turabian Style

N. V. Gromov; T. B. Medvedeva; O. P. Taran; M. N. Timofeeva; V. N. Parmon. 2021. "Hydrolysis of Cellulose in the Presence of Catalysts Based on Cesium Salts of Heteropoly Acids." Catalysis in Industry 13, no. 1: 73-80.

Originalpaper
Published: 01 January 2021 in Catalysis in Industry
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The hydrolysis–hydrogenation of arabinogalactan hemicellulose to valuable polyalcohols arabitol and galactitol, which are widely used in the food and pharmaceutical industries, is studied. The possibility of using a bifunctional catalyst containing disperse ruthenium supported on cesium salt of heteropolyacid Ru/Cs3HSiW12O40 for the process is demonstrated. A series of catalysts with different contents of the noble metal (0.3, 0.6 and 1 wt %) were prepared. Physicochemical techniques (low temperature nitrogen adsorption, IR spectroscopy, XRD, TEM) are used to characterize the prepared catalysts and the Cs3HSiW12O40 support. The effect the temperature and the substrate : catalyst ratio, and the content of ruthenium in the catalyst, have on the yields of the target products is studied. The highest yields of arabitol and galactitol were observed for a catalyst containing 0.6 wt % of Ru at a substrate : catalyst ratio of 1 : 1. Arabitol and galactitol can be produced with yields of 12 and 48%, respectively, at 200°C in the presence of 0.6%Ru/Cs3HSiW12O40 catalyst.

ACS Style

N. V. Gromov; T. B. Medvedeva; V. N. Panchenko; M. N. Timofeeva; V. N. Parmon. Hydrolysis–Hydrogenation of Arabinogalactan Catalyzed by Ru/Cs3HSiW12O40. Catalysis in Industry 2021, 13, 81 -89.

AMA Style

N. V. Gromov, T. B. Medvedeva, V. N. Panchenko, M. N. Timofeeva, V. N. Parmon. Hydrolysis–Hydrogenation of Arabinogalactan Catalyzed by Ru/Cs3HSiW12O40. Catalysis in Industry. 2021; 13 (1):81-89.

Chicago/Turabian Style

N. V. Gromov; T. B. Medvedeva; V. N. Panchenko; M. N. Timofeeva; V. N. Parmon. 2021. "Hydrolysis–Hydrogenation of Arabinogalactan Catalyzed by Ru/Cs3HSiW12O40." Catalysis in Industry 13, no. 1: 81-89.

Journal article
Published: 01 March 2018 in Vestnik Тomskogo gosudarstvennogo universiteta. Khimiya
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ACS Style

Tatyana B. Medvedeva. Xylan catalytic processing to produce formic acid and xylitol in the presence of heteropoly acids. Vestnik Тomskogo gosudarstvennogo universiteta. Khimiya 2018, 6 -22.

AMA Style

Tatyana B. Medvedeva. Xylan catalytic processing to produce formic acid and xylitol in the presence of heteropoly acids. Vestnik Тomskogo gosudarstvennogo universiteta. Khimiya. 2018; (11):6-22.

Chicago/Turabian Style

Tatyana B. Medvedeva. 2018. "Xylan catalytic processing to produce formic acid and xylitol in the presence of heteropoly acids." Vestnik Тomskogo gosudarstvennogo universiteta. Khimiya , no. 11: 6-22.

Journal article
Published: 01 March 2018 in Vestnik Тomskogo gosudarstvennogo universiteta. Khimiya
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ACS Style

Arina N. Suboch; Nikolai V. Gromov; Tatyana B. Medvedeva; Lidia S. Kibis; Evgeniy Yu. Gerasimov; Artemiy B. Ayusheev; Olga Yu. Podyacheva; Oxana P. Taran. Catalytic wet air oxidation of phenol in the presence of catalysts based on highly dispersed Ru supported on carbon nanotubes. Vestnik Тomskogo gosudarstvennogo universiteta. Khimiya 2018, 65 -82.

AMA Style

Arina N. Suboch, Nikolai V. Gromov, Tatyana B. Medvedeva, Lidia S. Kibis, Evgeniy Yu. Gerasimov, Artemiy B. Ayusheev, Olga Yu. Podyacheva, Oxana P. Taran. Catalytic wet air oxidation of phenol in the presence of catalysts based on highly dispersed Ru supported on carbon nanotubes. Vestnik Тomskogo gosudarstvennogo universiteta. Khimiya. 2018; (11):65-82.

Chicago/Turabian Style

Arina N. Suboch; Nikolai V. Gromov; Tatyana B. Medvedeva; Lidia S. Kibis; Evgeniy Yu. Gerasimov; Artemiy B. Ayusheev; Olga Yu. Podyacheva; Oxana P. Taran. 2018. "Catalytic wet air oxidation of phenol in the presence of catalysts based on highly dispersed Ru supported on carbon nanotubes." Vestnik Тomskogo gosudarstvennogo universiteta. Khimiya , no. 11: 65-82.