Studies on the Performance and Structure of　Supported Catalysts for the Partial

摘要/Abstract

摘要： The catalytic properties of several supported metal catalysts on dierent carriers were studied in the partial oxidation of methane (POM) to syngas. In our experiment, supported noble metal catalysts exhibited better performance than the other supported transition metal catalysts. The catalyst perfor- mances were significantly in uenced by the d-electron configuration of the active metal components and the dispersion of active metal components on the support. A catalyst with a moderate number of unpaired electrons in the d-orbital of the active metal support without obvious acidity or redox activity (e.g. MgO) was suitable for POM performance. The Rh/SiO2 catalyst was the best in the POM reaction, among those investigated. Reaction conditions apparently also aected the POM performance of the catalyst. The conversion of methane and the selectivity for CO increased with the reaction temperature, and a high CH4/O2 ratio was not beneficial for POM performance.

关键词: Methane, partial oxidation, syngas, catalytic performance

Abstract: The catalytic properties of several supported metal catalysts on dierent carriers were studied in the partial oxidation of methane (POM) to syngas. In our experiment, supported noble metal catalysts exhibited better performance than the other supported transition metal catalysts. The catalyst perfor- mances were significantly in uenced by the d-electron configuration of the active metal components and the dispersion of active metal components on the support. A catalyst with a moderate number of unpaired electrons in the d-orbital of the active metal support without obvious acidity or redox activity (e.g. MgO) was suitable for POM performance. The Rh/SiO2 catalyst was the best in the POM reaction, among those investigated. Reaction conditions apparently also aected the POM performance of the catalyst. The conversion of methane and the selectivity for CO increased with the reaction temperature, and a high CH4/O2 ratio was not beneficial for POM performance.

Key words: Methane, partial oxidation, syngas, catalytic performance

TinghuaWu;Mingqiao Zhu;Zhenjiang Niu;Yijun Zhong;Yan Guan;Ya Liu;Qiangu Yan;Zelin Li;Huilin Wan. Studies on the Performance and Structure of　Supported Catalysts for the Partial[J]. 能源化学(英文), 2002, 11 (3): 159-164.

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