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The promotion effects of Mn, Li and Fe on the selectivity for the synthesis Of C-2 oxygenates from syngas on rhodium based catalysts
Yin, HM; Ding, YJ; Luo, HY; Chen, WM; Lin, LW; Bao, X; Xu, Y
刊名NATURAL GAS CONVERSION VII
2004
147页:421-426
收录类别ISTP ; SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Organic ; Chemistry, Physical ; Energy & Fuels
研究领域[WOS]Chemistry ; Energy & Fuels
关键词[WOS]PRESSURE FT-IR ; SIO2-SUPPORTED RH ; CO HYDROGENATION ; CONVERSION ; MECHANISM
英文摘要Rh-based catalysts with the promoters of Mn, Li and Fe were prepared. The activity of the catalyst for C, oxygenates formation enhanced with the addition of additives. The promotion effects of these additives were investigated by means of FT-IR, CO-TPD and TPSR of adsorbed CO with H-2,. IR results suggested that Fe, Mn and Li might be in close contact with Rh, and formed new active sites, which promoted CO activation on Rh surface and favored the formation of C-2 oxygenated intermediates. The results of CO-TPD and TPSR showed that only a part of adsorbed CO on the catalyst could be hydrogenated into CH4. The ratio of CH4 quantity in TPSR to that of desorbed CO in CO-TPD on various catalysts was calculated, and it decreased in the order: Rh/SiO2 >Rh-Mn/SiO7 >Rh-Mn-Li/SiO >Rh-Mn-Li-Fe/SiO2, which implied that non-dissociated CO increased in the reverse order. Which was consistent with the catalytic activity of C, oxygenates formation sequence. The improvement of the space-time yield (STY) and selectivity towards C-2 oxygenates could be explained based on that the increase of the nondissociative CO and the decrease of dissociative CO on the catalyst favored the insertion of CO into CHx.
语种英语
WOS记录号WOS:000224407500071
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/139599
专题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, Nat Gas Utilizat & Appl Catalysis Lab, Dalian 116023, Peoples R China
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GB/T 7714
Yin, HM,Ding, YJ,Luo, HY,et al. The promotion effects of Mn, Li and Fe on the selectivity for the synthesis Of C-2 oxygenates from syngas on rhodium based catalysts[J]. NATURAL GAS CONVERSION VII,2004,147:421-426.
APA Yin, HM.,Ding, YJ.,Luo, HY.,Chen, WM.,Lin, LW.,...&Xu, Y.(2004).The promotion effects of Mn, Li and Fe on the selectivity for the synthesis Of C-2 oxygenates from syngas on rhodium based catalysts.NATURAL GAS CONVERSION VII,147,421-426.
MLA Yin, HM,et al."The promotion effects of Mn, Li and Fe on the selectivity for the synthesis Of C-2 oxygenates from syngas on rhodium based catalysts".NATURAL GAS CONVERSION VII 147(2004):421-426.
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