Effect of Co additive on formation of coke deposits in methane dehydro-aromatization over Mo/HZSM-5 catalyst
文献类型：期刊论文
| 作者 | Liu, HM; Tian, BL; Li, YG; Bao, XH; Xu, YD |
| 刊名 | chinese journal of catalysis
 |
| 出版日期 | 2003-02-01 |
| 卷号 | 24期号:2页码:123-128 |
| 关键词 | methane dehydro-aromatization molybdenum HZSM-5 zeolite supported catalyst cobalt coke deposit temperature-programmed surface reaction |
| 英文摘要 | methane dehydro-aromatization (mda) in the absence of gas-phase oxygen is one of the promising routes for direct conversion of methane into fuels and chemicals, particularly into aromatics such as benzene and toluene. mda under non-oxidative conditions was carried out over co-mo/hzsm-5 catalyst, and the result suggested that the addition of co dramatically improved the stability of mo/hzsm-5 catalyst. furthermore, the chemical nature and physical properties of the coke deposits formed on co-mo/hzsm-5 catalyst were studied by various temperature-programmed surface reactions (tpsr), such as tph, tpco2 and tpo, combining with tga and tem. the results were compared with those obtained over mo/hzsm-5 catalyst. the tpo profiles recorded during the procedure of coke burning-off showed two peaks. the tph experiments had effect on the coke burning-off only at high temperature. however, tpco2 mainly resulted in the diminishing of the coke burning-off at low temperature. the tem pictures gave evidence that a lot of filamentous carbon formed on the surface of coked catalysts during the course of tpsr, and this kind of coke deposits was not a contributor to the deactivation of catalyst. hydrogen had no ability to react with carbon filaments, but tpco2 experiment could eliminate them completely. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, applied ; chemistry, physical ; engineering, chemical |
| 研究领域[WOS] | chemistry ; engineering |
| 关键词[WOS] | nonoxidative conditions ; benzene ; conversion ; zeolite ; absence ; oxygen |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000181567900012 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/139272]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, HM,Tian, BL,Li, YG,et al. Effect of Co additive on formation of coke deposits in methane dehydro-aromatization over Mo/HZSM-5 catalyst[J]. chinese journal of catalysis,2003,24(2):123-128. |
| APA | Liu, HM,Tian, BL,Li, YG,Bao, XH,&Xu, YD.(2003).Effect of Co additive on formation of coke deposits in methane dehydro-aromatization over Mo/HZSM-5 catalyst.chinese journal of catalysis,24(2),123-128. |
| MLA | Liu, HM,et al."Effect of Co additive on formation of coke deposits in methane dehydro-aromatization over Mo/HZSM-5 catalyst".chinese journal of catalysis 24.2(2003):123-128. |
入库方式： OAI收割
来源：大连化学物理研究所
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