Bromine-mediated conversion of methane to C1 oxygenates over Zn-MCM-41 supported mercuric oxide
文献类型：期刊论文
| 作者 | Li, Fengbo; Yuan, Guoqing; Yan, Fang; Yan, Fengwen |
| 刊名 | APPLIED CATALYSIS A-GENERAL
 |
| 出版日期 | 2008-02-01 |
| 卷号 | 335期号:1页码:82-87 |
| 关键词 | Bromine Methane Selective Oxidation C1 Oxygenates Mercuric Oxide |
| ISSN号 | 0926-860X |
| DOI | 10.1016/j.apcata.2007.11.014 |
| 英文摘要 | The structure mobility of the zigzag mercuric oxide chains and the strong preference of mercuric (11) cation sites for bromine lead to a novel bromine-mediated partial methane oxidation at relatively low reaction temperature (220 degrees C). Zn-MCM-41 supported mercuric oxide nanophases were used as the model catalyst to investigate the role of bromine in the catalytic cycle. The introduction of bromine to feed gas consisting of CH4/O-2/Ar (3:1:6) leads to a sharp increase in the methane conversion. Meanwhile, a transient high product selectivity to C 1 oxygenates was observed. Two bromine-mediated routes can be identified: MeHgBrn as the intermediate species and mercuric hypobromite as the active agent for methane oxidation, which occur simultaneously in the methane conversion. The controlling mechanism transfers from the former to the latter with the gradual fixation of bromine into mercuric oxide lattice. The catalyst was characterized detailedly by XRD, XPS, and N-2 Sorption. The chemical composite changes of active species were detected by XPS, which provide some direct information about the mediator role of bromine in the catalytic cycle. (C) 2007 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000253366100011 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/63869]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yuan, Guoqing |
| 作者单位 | Chinese Acad Sci, BNLMS, Inst Chem, Lab New Mat, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Fengbo,Yuan, Guoqing,Yan, Fang,et al. Bromine-mediated conversion of methane to C1 oxygenates over Zn-MCM-41 supported mercuric oxide[J]. APPLIED CATALYSIS A-GENERAL,2008,335(1):82-87. |
| APA | Li, Fengbo,Yuan, Guoqing,Yan, Fang,&Yan, Fengwen.(2008).Bromine-mediated conversion of methane to C1 oxygenates over Zn-MCM-41 supported mercuric oxide.APPLIED CATALYSIS A-GENERAL,335(1),82-87. |
| MLA | Li, Fengbo,et al."Bromine-mediated conversion of methane to C1 oxygenates over Zn-MCM-41 supported mercuric oxide".APPLIED CATALYSIS A-GENERAL 335.1(2008):82-87. |
入库方式： OAI收割
来源：化学研究所
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