Optimization of Metal Ratio and CO Desorption Behavior of Rh-Mn-Li/SiO2 Catalyst for CO Hydrogenation | |
Jiang Dahao1,2; Ding Yunjie1; Lue Yuan1; Zhu Hejun1; Chen Weimiao1; Wang Tao1; Yan Li1; Luo Hongyuan1 | |
刊名 | chinese journal of catalysis |
2009-07-01 | |
卷号 | 30期号:7页码:697-703 |
关键词 | manganese lithium rhodium efficiency promoter effect two-carbon-containing oxygenate carbon monoxide hydrogenation |
英文摘要 | a highly efficient rh-mn-li/sio2 catalyst for co hydrogenation to c-2 oxygenates was developed by the optimization of metal ratio, and the effects of mn and li loadings on the co desorption behavior of the catalyst were studied by temperature-programmed desorption of adsorbed co (co-tpd) and temperature-programmed surface reaction (tpsr) of adsorbed co with h-2. at 543-573 k, the rh efficiency (e-rh) reached the maximum when the rh loading was 1.5%. the space time yield of c-2 oxygenates (styc2-oxy), e-rh, and the selectivity for c-2 oxygenates (sc2-oxy) were dramatically increased when a small amount of mn was added to the rh/sio2 catalyst. styc2-oxy and e-rh reached the maximum when the mn loading was 0.53%, while the sc2-oxy increased slowly with increasing mn loading. sc2-oxy increased remarkably with increasing li loading, while styc2-oxy and e-rh obviously decreased. the results of co-tpd and tpsr showed that the addition of mn to the rh-based catalyst increased the number of active sites responsible for co dissociation and their ability to dissociate co and therefore increased the activity of the rh-based catalyst. however, the number of active sites and their co dissociation ability decreased with the addition of li. on the other hand, the addition of mn and li increased the proportion of the active sites for nondissociative co adsorption and therefore increased the sc2-oxy. |
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] | carbon-monoxide ; promoter ; syngas |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000268922300020 |
公开日期 | 2015-11-17 |
内容类型 | 期刊论文 |
源URL | [http://159.226.238.44/handle/321008/141373] |
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.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Jiang Dahao,Ding Yunjie,Lue Yuan,et al. Optimization of Metal Ratio and CO Desorption Behavior of Rh-Mn-Li/SiO2 Catalyst for CO Hydrogenation[J]. chinese journal of catalysis,2009,30(7):697-703. |
APA | Jiang Dahao.,Ding Yunjie.,Lue Yuan.,Zhu Hejun.,Chen Weimiao.,...&Luo Hongyuan.(2009).Optimization of Metal Ratio and CO Desorption Behavior of Rh-Mn-Li/SiO2 Catalyst for CO Hydrogenation.chinese journal of catalysis,30(7),697-703. |
MLA | Jiang Dahao,et al."Optimization of Metal Ratio and CO Desorption Behavior of Rh-Mn-Li/SiO2 Catalyst for CO Hydrogenation".chinese journal of catalysis 30.7(2009):697-703. |
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