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High-selectivity partial oxidation of methane into synthesis gas: the role of the red-ox transformations of rare earth — alkali earth cobaltate-based catalyst componentsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 30 апреля 2017 г.
- Авторы: Dedov A.G., Loktev A.S., Komissarenko D.A., Parkhomenko K.V., A-С Roger, Shlyakhtin O.A., Mazo G.N., Moiseev I.I.
- Журнал: Fuel Processing Technology
- Том: 148
- Год издания: 2016
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 128
- Последняя страница: 137
- DOI: 10.1016/j.fuproc.2016.02.018
- Аннотация: La1+xSr1-xCoO4 (x = 0; 0.25) and NdCaCoO3.96 compounds with a layered perovskite-like structure synthesized by the solid state method and characterized by XRD, XPS, EDAX and H2-TPR were used as catalyst precursors for the partial oxidation of methane to synthesis gas. Catalytic tests were carried out in a quartz flow reactor using a CH4/O2 mixture without dilution with inert gases. The higher activity of the NdCaCoO4±δ-based catalyst in comparison with La1+xSr1-xCoO4 is associated with the easier formation of Nd and Ca oxides and metallic cobalt in the course of NdCaCoO4±δ reduction in the POM environment. Preliminary reduction of the catalysts with hydrogen leads to a significant increase in synthesis gas production at 800-850С. Different activity and selectivity of NdCaCoO4±δ and La1+xSr1-xCoO4-based catalysts can also be related to the different morphologies of metal-oxide nanocomposites that appear in the course of the reductive decomposition of cobaltates.
- Добавил в систему: Шляхтин Олег Александрович