Nickel Oxide Catalysts for Partial Oxidation of Methane to Synthesis Gas
Nickel catalysts supported on different carriers (θ-Al2O3, γ-Al2O3, HZSM-5 with γ-Al2O3, HZSM-5, and NaX) have been investigated for the partial oxidation of methane. All the supported nickel catalysts showed a high activity for the formation of synthesis gas, and γ-Al2O3 was the most effective amon...
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al-Farabi Kazakh National University
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doaj-cd5e7c2bd1a142c196d0746bd02832932020-11-24T23:48:13Zengal-Farabi Kazakh National UniversityEurasian Chemico-Technological Journal 1562-39202522-48672016-01-01181253010.18321/ectj389194Nickel Oxide Catalysts for Partial Oxidation of Methane to Synthesis GasK. Dossumov0H. Kurokawa1Y. G. Yergaziyeva2L. K. Myltykbayeva3S. Zh. Tayrabekova4Centre of Physical and Chemical Methods of Investigation, Tole-bi str., 96a, Almaty, 050012 KazakhstanGraduate School of Science & Engineering, Saitama University, 255, Shimo-okubo, Sakura-ku, Saitama, JapanThe Institute of Combustion Problems, Bogenbay batyr str., 172, Almaty, 050012 KazakhstanThe Institute of Combustion Problems, Bogenbay batyr str., 172, Almaty, 050012 KazakhstanThe Institute of Combustion Problems, Bogenbay batyr str., 172, Almaty, 050012 KazakhstanNickel catalysts supported on different carriers (θ-Al2O3, γ-Al2O3, HZSM-5 with γ-Al2O3, HZSM-5, and NaX) have been investigated for the partial oxidation of methane. All the supported nickel catalysts showed a high activity for the formation of synthesis gas, and γ-Al2O3 was the most effective among all the tested carriers. The effect of the heat-treatment temperature of the 3 wt.% Ni/γ-Al2O3 catalyst on its catalytic activity was studied, and a considerable decrease in its activity was observed by the heat-treatment of the catalyst at 1000 °C compared with the catalysts prepared by the 300–800 °C – calcination. The XRD analysis suggested the formation of NiAl2O4 that is a non-reducible compound at the high calcination temperature. The addition of a modifier (Co, Ce, or La) to the 3 wt.% Ni/γ-Al2O3 catalyst increased the selectivity to H2 and CO with the decreasing selectivity to CO2, and the highest selectivity to H2 was obtained by the 5 wt.% NiLa/γ-Al2O3. The developed 5 wt.% NiLa/γ-Al2O3 catalyst showed a high stability for 30 h for the partial oxidation of methane at 750 °C. The methane conversion reached 95%, selectivity to hydrogen 83% and 52% to carbon monoxide.http://ect-journal.kz/index.php/ectj/article/view/194partial oxidation of methane, synthesis gas, supported nickel catalysts |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
K. Dossumov H. Kurokawa Y. G. Yergaziyeva L. K. Myltykbayeva S. Zh. Tayrabekova |
spellingShingle |
K. Dossumov H. Kurokawa Y. G. Yergaziyeva L. K. Myltykbayeva S. Zh. Tayrabekova Nickel Oxide Catalysts for Partial Oxidation of Methane to Synthesis Gas Eurasian Chemico-Technological Journal partial oxidation of methane, synthesis gas, supported nickel catalysts |
author_facet |
K. Dossumov H. Kurokawa Y. G. Yergaziyeva L. K. Myltykbayeva S. Zh. Tayrabekova |
author_sort |
K. Dossumov |
title |
Nickel Oxide Catalysts for Partial Oxidation of Methane to Synthesis Gas |
title_short |
Nickel Oxide Catalysts for Partial Oxidation of Methane to Synthesis Gas |
title_full |
Nickel Oxide Catalysts for Partial Oxidation of Methane to Synthesis Gas |
title_fullStr |
Nickel Oxide Catalysts for Partial Oxidation of Methane to Synthesis Gas |
title_full_unstemmed |
Nickel Oxide Catalysts for Partial Oxidation of Methane to Synthesis Gas |
title_sort |
nickel oxide catalysts for partial oxidation of methane to synthesis gas |
publisher |
al-Farabi Kazakh National University |
series |
Eurasian Chemico-Technological Journal |
issn |
1562-3920 2522-4867 |
publishDate |
2016-01-01 |
description |
Nickel catalysts supported on different carriers (θ-Al2O3, γ-Al2O3, HZSM-5 with γ-Al2O3, HZSM-5, and NaX) have been investigated for the partial oxidation of methane. All the supported nickel catalysts showed a high activity for the formation of synthesis gas, and γ-Al2O3 was the most effective among all the tested carriers.
The effect of the heat-treatment temperature of the 3 wt.% Ni/γ-Al2O3 catalyst on its catalytic activity was studied, and a considerable decrease in its activity was observed by the heat-treatment of the catalyst at 1000 °C compared with the catalysts prepared by the 300–800 °C – calcination. The XRD analysis suggested the formation of NiAl2O4 that is a non-reducible compound at the high calcination temperature. The addition of a modifier (Co, Ce, or La) to the 3 wt.% Ni/γ-Al2O3 catalyst increased the selectivity to H2 and CO with the decreasing selectivity to CO2, and the highest selectivity to H2 was obtained by the 5 wt.% NiLa/γ-Al2O3. The developed 5 wt.% NiLa/γ-Al2O3 catalyst showed a high stability for 30 h for the partial oxidation of methane at 750 °C. The methane conversion reached 95%, selectivity to hydrogen 83% and 52% to carbon monoxide. |
topic |
partial oxidation of methane, synthesis gas, supported nickel catalysts |
url |
http://ect-journal.kz/index.php/ectj/article/view/194 |
work_keys_str_mv |
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