Promotion effect of adsorbed water/OH on the catalytic performance of Ag/activated carbon catalysts for CO preferential oxidation in excess H-2
文献类型：期刊论文
| 作者 | Guo, Yuanyuan1; Chen, Limin1,2; Ma, Ding2,3; Ye, Daiqi1; Huang, Bichun1 |
| 刊名 | journal of energy chemistry
 |
| 出版日期 | 2013-07-01 |
| 卷号 | 22期号:4页码:591-598 |
| 关键词 | promotion effect adsorbed water/OH Ag/activated carbon (Ag/AC) catalysts CO preferential oxidation (PROX) |
| 英文摘要 | activated carbon (ac) supported silver catalysts were prepared by incipient wetness impregnation method and their catalytic performance for co preferential oxidation (prox) in excess h-2 was evaluated. ag/ac catalysts, after reduction in h-2 at low temperatures (<= 200 degrees c) following heat treatment in he at 200 degrees c (he200h200), exhibited the best catalytic properties. temperature-programmed desorption (tpd), x-ray diffraction (xrd) and temperature-programmed reduction (tpr) results indicated that silver oxides were produced during heat treatment in he at 200 degrees c which were reduced to metal silver nanoparticles in h-2 at low temperatures (<= 200 degrees c), simultaneously generating the adsorbed water/oh. co conversion was enhanced 40% after water treatment following heat treatment in he at 600 degrees c. these results imply that the metal silver nanoparticles are the active species and the adsorbed water/oh has noticeable promotion effects on co oxidation. however, the promotion effect is still limited compared to gold catalysts under the similar conditions, which may be the reason of low selectivity to co oxidation in prox over silver catalysts. the reported ag/ac-s-he catalyst after he200h200 treatment displayed similar prox of co reaction properties to ag/sio2. this means that ag/ac catalyst is also an efficient low-temperature co oxidation catalyst. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, applied ; chemistry, physical ; energy & fuels ; engineering, chemical |
| 研究领域[WOS] | chemistry ; energy & fuels ; engineering |
| 关键词[WOS] | selective oxidation ; ag/sio2 catalysts ; silver catalysts ; ag nanoparticles ; h-2-rich gases ; atomic oxygen ; temperature ; hydrogen ; au(111) ; supports |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000323239700007 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/137638]  |
| 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 | 1.S China Univ Technol, Coll Environm Sci & Engn, Guangdong Prov Key Lab Atmospher Environm & Pollu, Guangzhou 510006, Guangdong, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China 3.Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Yuanyuan,Chen, Limin,Ma, Ding,et al. Promotion effect of adsorbed water/OH on the catalytic performance of Ag/activated carbon catalysts for CO preferential oxidation in excess H-2[J]. journal of energy chemistry,2013,22(4):591-598. |
| APA | Guo, Yuanyuan,Chen, Limin,Ma, Ding,Ye, Daiqi,&Huang, Bichun.(2013).Promotion effect of adsorbed water/OH on the catalytic performance of Ag/activated carbon catalysts for CO preferential oxidation in excess H-2.journal of energy chemistry,22(4),591-598. |
| MLA | Guo, Yuanyuan,et al."Promotion effect of adsorbed water/OH on the catalytic performance of Ag/activated carbon catalysts for CO preferential oxidation in excess H-2".journal of energy chemistry 22.4(2013):591-598. |
入库方式： OAI收割
来源：大连化学物理研究所
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