Promotional effects of Cr and Fe on Rh/SiO2 catalyst for the preparation of ethanol from CO hydrogenation

doi:10.1039/c5ra28075c

	Promotional effects of Cr and Fe on Rh/SiO2 catalyst for the preparation of ethanol from CO hydrogenation
	Cheng, Xianbo 2; Xue, Fei 2,3; Chen, Weimiao 2; Song, Xiangen 2; Ding, Yunjie 1,2
刊名	RSC ADVANCES
	2016
卷号	6 期号:42 页码:35348-35353
ISSN号	2046-2069
DOI	10.1039/c5ra28075c
文献子类	Article
英文摘要	A series of Cr and Fe promoted Rh-based silica supported catalysts were prepared by an incipient co-impregnation method. The performance of the catalysts was investigated by the hydrogenation of carbon monoxide to ethanol. The catalysts were characterized by N-2 adsorption-desorption, X-ray diffraction, transmission electron microscopy, H-2 temperature-programmed reduction, temperature programmed surface reaction, and Fourier transform infrared spectroscopy. The results revealed that addition of 0.2-0.4 wt% Cr to Rh/SiO2 increased its activity significantly. However, further addition of 0.1-0.2 wt% Fe lowered CO conversion slightly, while the selectivity towards ethanol was enhanced significantly. Therefore, high catalytic activity and selectivity toward ethanol were achieved by simultaneous introduction of 0.4 wt% Cr and 0.2 wt% Fe to Rh/SiO2. This may be due to improved dispersion of Rh particles, moderate ability to dissociate CO molecules, and high ratio of Rh+ sites to Rh-0 sites.
WOS关键词	LAYERED DOUBLE HYDROXIDES ; HIGHER ALCOHOL SYNTHESIS ; SUPPORTED RH CATALYSTS ; METHANOL SYNTHESIS ; CARBON-MONOXIDE ; OXYGENATE SYNTHESIS ; METAL PROMOTION ; SYNTHESIS GAS ; SYNGAS ; CONVERSION
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000374349600025
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/170784]
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
通讯作者	Ding, Yunjie
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Xianbo,Xue, Fei,Chen, Weimiao,et al. Promotional effects of Cr and Fe on Rh/SiO2 catalyst for the preparation of ethanol from CO hydrogenation[J]. RSC ADVANCES,2016,6(42):35348-35353.
APA	Cheng, Xianbo,Xue, Fei,Chen, Weimiao,Song, Xiangen,&Ding, Yunjie.(2016).Promotional effects of Cr and Fe on Rh/SiO2 catalyst for the preparation of ethanol from CO hydrogenation.RSC ADVANCES,6(42),35348-35353.
MLA	Cheng, Xianbo,et al."Promotional effects of Cr and Fe on Rh/SiO2 catalyst for the preparation of ethanol from CO hydrogenation".RSC ADVANCES 6.42(2016):35348-35353.