Research output: Contribution to journal › Article › peer-review
Ni-Ru-containing mixed oxide-based composites as precursors for ethanol steam reforming catalysts : Effect of the synthesis methods on the structural and catalytic properties. / Naurzkulova, Symbat Muratbekovna; Arapova, Marina Vasilievna; Ishchenko, Arcady Vladimirovich et al.
In: Open Chemistry, Vol. 19, No. 1, 01.01.2021, p. 696-708.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Ni-Ru-containing mixed oxide-based composites as precursors for ethanol steam reforming catalysts
T2 - Effect of the synthesis methods on the structural and catalytic properties
AU - Naurzkulova, Symbat Muratbekovna
AU - Arapova, Marina Vasilievna
AU - Ishchenko, Arcady Vladimirovich
AU - Krieger, Tamara Andreevna
AU - Saraev, Andrei Aleksandrovich
AU - Kaichev, Vasilii Vasilievich
AU - Rogov, Vladimir Alekseevich
AU - Krasnov, Aleksei Vyacheslavovich
AU - Massalimova, Bakytgul Kabykenovna
AU - Sadykov, Vladislav Aleksandrovich
N1 - Funding Information: Funding information: This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the governmental order for Boreskov Institute of Catalysis project 0239-2021-0005 as well as by M. Kh. Dulaty Taraz Regional University, Taraz, Kazakhstan. Publisher Copyright: © 2021 De Gruyter. All rights reserved. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/1/1
Y1 - 2021/1/1
N2 - Ethanol steam reforming catalyst's precursors, i.e., nanocomposites of complex oxides with the general formula [Pr0.15Sm0.15Ce0.35Zr0.35O2 + LaMn0.45Ni0.45Ru0.1O3] (1:1 by mass), were synthesized by three different methods. It was shown that two synthesis methods - ultrasonic dispersion and sequential polymeric method, lead to the formation of the nanocomposite perovskite-fluorite system with the specific surface area up to 50 m2/g. Reduction of samples at 400-500°C lead to the formation of Ni-Ru alloy nanoparticles strongly bound with the surface of oxide nanocomposite. Catalytic tests in ethanol steam reforming reaction at 500-600°C showed the highest specific activity of the sample prepared by the sequential polymeric method due to the location of Ni- and Ru-containing perovskite mainly on the surface of the composite providing a high concentration of active metal centers. At higher temperatures for all samples, ethanol conversion approached 100% with hydrogen yield varying in the range of 65-75%. A study of spent catalysts confirmed the absence of carbon deposits after long-term catalytic tests at 650°C.
AB - Ethanol steam reforming catalyst's precursors, i.e., nanocomposites of complex oxides with the general formula [Pr0.15Sm0.15Ce0.35Zr0.35O2 + LaMn0.45Ni0.45Ru0.1O3] (1:1 by mass), were synthesized by three different methods. It was shown that two synthesis methods - ultrasonic dispersion and sequential polymeric method, lead to the formation of the nanocomposite perovskite-fluorite system with the specific surface area up to 50 m2/g. Reduction of samples at 400-500°C lead to the formation of Ni-Ru alloy nanoparticles strongly bound with the surface of oxide nanocomposite. Catalytic tests in ethanol steam reforming reaction at 500-600°C showed the highest specific activity of the sample prepared by the sequential polymeric method due to the location of Ni- and Ru-containing perovskite mainly on the surface of the composite providing a high concentration of active metal centers. At higher temperatures for all samples, ethanol conversion approached 100% with hydrogen yield varying in the range of 65-75%. A study of spent catalysts confirmed the absence of carbon deposits after long-term catalytic tests at 650°C.
KW - Ethanol
KW - Fluorite
KW - Hydrogen
KW - Perovskite
KW - Reforming
UR - http://www.scopus.com/inward/record.url?scp=85108699957&partnerID=8YFLogxK
U2 - 10.1515/chem-2021-0062
DO - 10.1515/chem-2021-0062
M3 - Article
AN - SCOPUS:85108699957
VL - 19
SP - 696
EP - 708
JO - Open Chemistry
JF - Open Chemistry
SN - 2391-5420
IS - 1
ER -
ID: 28874866