Promising SiC support for Pd catalyst in selective hydrogenation of acetylene to ethylene

doi:10.1016/j.apsusc.2018.02.145

	Promising SiC support for Pd catalyst in selective hydrogenation of acetylene to ethylene
	Chu, Wei 2; Guo, Zhanglong 2,3; Liu, Yuefeng 1; Liu, Yan 3
刊名	APPLIED SURFACE SCIENCE
	2018-06-01
卷号	442 页码:736-741
关键词	Pd Nanoparticles Sic Tio2 Acetylene Selective Hydrogenation Metal-support Interaction
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2018.02.145
文献子类	Article
英文摘要	In this study, SiC supported Pd nanoparticles were found to be an efficient catalyst in acetylene selective hydrogenation reaction. The ethylene selectivity can be about 20% higher than that on Pd/TiO2 catalyst at the same acetylene conversion at 90%. Moreover, Pd/SiC catalyst showed a stable catalytic life at 65 degrees C with 80% ethylene selectivity. With the detailed characterization using temperature-programmed reduction (H-2-TPR), powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), N-2 adsorption/desorption analysis, CO-chemisorption and thermo-gravimetric analysis (TGA), it was found that SiC owns a lower surface area (22.9 m(2)/g) and a broad distribution of meso-/macro-porosity (from 5 to 65 nm), which enhanced the mass transfer during the chemical process at high reaction rate and decreased the residence time of ethylene on catalyst surface. Importantly, SiC support has the high thermal conductivity, which favored the rapid temperature homogenization through the catalyst bed and inhabited the over-hydrogenation of acetylene. The surface electronic density of Pd on Pd/SiC catalyst was higher than that on Pd/TiO2, which could promote desorption of ethylene from surface of the catalyst. TGA results confirmed a much less coke deposition on Pd/SiC catalyst. (C) 2018 Elsevier B.V. All rights reserved.
WOS关键词	FISCHER-TROPSCH SYNTHESIS ; EXCESS ETHYLENE ; PALLADIUM CATALYSTS ; PD/TIO2 CATALYSTS ; DISCHARGE PLASMA ; TIO2 ; DEACTIVATION ; TI3+ ; COMBUSTION ; COMPOSITE
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000428294500085
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/169018]
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	Chu, Wei; Liu, Yan
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy DNL, Beijing 116023, Peoples R China 2.Sichuan Univ, Dept Chem Engn, Chengdu 610065, Sichuan, Peoples R China 3.ICES, Singapore 627833, Singapore
推荐引用方式 GB/T 7714	Chu, Wei,Guo, Zhanglong,Liu, Yuefeng,et al. Promising SiC support for Pd catalyst in selective hydrogenation of acetylene to ethylene[J]. APPLIED SURFACE SCIENCE,2018,442:736-741.
APA	Chu, Wei,Guo, Zhanglong,Liu, Yuefeng,&Liu, Yan.(2018).Promising SiC support for Pd catalyst in selective hydrogenation of acetylene to ethylene.APPLIED SURFACE SCIENCE,442,736-741.
MLA	Chu, Wei,et al."Promising SiC support for Pd catalyst in selective hydrogenation of acetylene to ethylene".APPLIED SURFACE SCIENCE 442(2018):736-741.