1Institute of Combustion Problems, Bogenbay batyra, 172 A, 050012 Almaty , Kazakhstan
2Al-Farabi Kazakh National University, Al- Farabi ave. 71, 050040 Almaty, Kazakhstan
3L.V. Pysarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, Prospekt Nauki, 31, 03028, Ukraine
BibTex Citation Data :
@article{BCREC12174, author = {Gaukhar Ergazieva and Nursaya Makayeva and Zhanna Shaimerden and Sergiy Soloviev and Мoldir Telbayeva and Еrzhan Akkazin and Fariza Ahmetova}, title = {Catalytic Decomposition of Methane to Hydrogen over Al2O3 Supported Mono- and Bimetallic Catalysts}, journal = {Bulletin of Chemical Reaction Engineering & Catalysis}, volume = {17}, number = {1}, year = {2022}, keywords = {methane decomposition; Al2O3 catalyst; hydrogen; bimetallic catalyst; Ni/g-Al2O3; Co/g-Al2O3; Ni-Co/g-Al2O3}, abstract = { This article discusses the decomposition of methane in the temperature range 550–800 °C on low-percentage monometallic (Ni/g-Al 2 O 3 , Co/g-Al 2 O 3 ) and bimetallic (Ni-Co/g-Al 2 O 3 ) catalysts. It is shown that the bimetallic catalyst is more active in the decomposition of methane to hydrogen than monometallic ones. At a reaction temperature of 600 °C, the highest methane conversion is 81%, and the highest hydrogen yield of 51% is formed on Ni-Co/g-Al 2 O 3 . A complex of physicochemical methods (Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), Temperature Programmed Reduction (TPR-H 2 ), etc.) established that the addition of cobalt oxide to the composition of Ni/g-Al 2 O 3 leads to the formation of surface bimetallic Ni-Co alloys, while the dispersion of particles increases and the reducibility of the catalyst is facilitated, which provides an increase in the concentration of metal particles - active centers, which can be the reason for an increase in the catalytic properties of a bimetallic catalyst in comparison with monometallic ones. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License ( https://creativecommons.org/licenses/by-sa/4.0 ). }, issn = {1978-2993}, pages = {1--12} doi = {10.9767/bcrec.17.1.12174.1-12}, url = {https://ejournal2.undip.ac.id/index.php/bcrec/article/view/12174} }
Refworks Citation Data :
This article discusses the decomposition of methane in the temperature range 550–800 °C on low-percentage monometallic (Ni/g-Al2O3, Co/g-Al2O3) and bimetallic (Ni-Co/g-Al2O3) catalysts. It is shown that the bimetallic catalyst is more active in the decomposition of methane to hydrogen than monometallic ones. At a reaction temperature of 600 °C, the highest methane conversion is 81%, and the highest hydrogen yield of 51% is formed on Ni-Co/g-Al2O3. A complex of physicochemical methods (Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), Temperature Programmed Reduction (TPR-H2), etc.) established that the addition of cobalt oxide to the composition of Ni/g-Al2O3 leads to the formation of surface bimetallic Ni-Co alloys, while the dispersion of particles increases and the reducibility of the catalyst is facilitated, which provides an increase in the concentration of metal particles - active centers, which can be the reason for an increase in the catalytic properties of a bimetallic catalyst in comparison with monometallic ones. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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