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题名: Catalytic hydrogenation of carbon monoxide over Rh-Mn-Li/SiO2 catalyst for the synthesis of C2+ oxygenates: the remarkable effect of urea on the particle size of Rh
作者: Xue, Fei1, 3;  Ding, Yunjie1, 2;  Chen, Weimiao1;  Song, Xiangen1;  Cheng, Xianbo1
关键词: Urea ;  Carbon monoxide hydrogenation ;  C2+ oxygenates ;  Supported Rh catalyst ;  Structure-sensitive reaction
刊名: REACTION KINETICS MECHANISMS AND CATALYSIS
发表日期: 2015-08-01
DOI: 10.1007/s11144-015-0863-y
卷: 115, 期:2, 页:625-634
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: A series of Rh-Mn-Li/SiO2 catalysts were prepared by the impregnation of a silica support with solutions containing metal precursors with different amounts of urea. Catalyst performance was investigated by the hydrogenation of carbon monoxide. The catalysts were characterized by X-ray diffraction, transmission electron microscopy, hydrogen chemisorption, diffuse reflectance ultraviolet-visible (DR UV-Vis) spectroscopy, and thermogravimetric analysis. The results revealed that the amount of urea had a significant effect on the particle size of Rh, which increased from approximately 2-5 nm with the increase in urea loading from 0 to 2.0 wt%. DR UV-Vis spectra indicated that the increase in the Rh particle size with increasing urea loading might be attributed to the coordination of Rh3+ with urea or its derivatives during calcination. At a urea loading of 1.0 wt%, the particle size of Rh was 3.7 nm, and the space time yield of C2+ oxygenates reached a maximum of 560.0 g kg(-1) h(-1).
关键词[WOS]: SUPPORTED RHODIUM CATALYSTS ;  PRESSURE CO HYDROGENATION ;  FISCHER-TROPSCH SYNTHESIS ;  ETHANOL-PRODUCTION ;  SYNTHESIS GAS ;  SYNGAS ;  SELECTIVITY ;  PERFORMANCE ;  PROMOTION ;  HYDROFORMYLATION
语种: 英语
WOS记录号: WOS:000358170200015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146396
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Xue, Fei,Ding, Yunjie,Chen, Weimiao,et al. Catalytic hydrogenation of carbon monoxide over Rh-Mn-Li/SiO2 catalyst for the synthesis of C2+ oxygenates: the remarkable effect of urea on the particle size of Rh[J]. REACTION KINETICS MECHANISMS AND CATALYSIS,2015,115(2):625-634.
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