Ga3+-stabilized Pt in PtSn-Mg(Ga)(Al)O catalyst for promoting ethane dehydrogenation

doi:10.1016/j.jcat.2018.09.009

	Ga3+-stabilized Pt in PtSn-Mg(Ga)(Al)O catalyst for promoting ethane dehydrogenation
	Zhang, Qiao; Zhang, Keting; Zhang, Shaohong; Liu, Qiying; Chen, Lungang; Li, Xinjun; Wang, Chenguang; Ma, Longlong
刊名	JOURNAL OF CATALYSIS
	2018-12-01
卷号	368 页码:79-88
关键词	Calcined Mg(Ga)(Al)O LDHs Ethane dehydrogenation FTIR Pentacoordinate Ga3+ ions
ISSN号	0021-9517
DOI	10.1016/j.jcat.2018.09.009
通讯作者	Wang, Chenguang(wangcg@ms.giec.ac.cn) ; Ma, Longlong(mall@ms.giec.ac.cn)
英文摘要	A series of catalysts [PtSn-Mg(Ga)(Al)O, Pt-Mg(Ga)(Al)O, PtSn-Mg(Al)O, Pt-Mg(Al)O, Sn-Mg(Ga)(Al)O, and Sn-Mg(Al)O] were prepared and investigated to understand the roles of Pt, Ga, and Sn in the ethane dehydrogenation reaction. In the catalytic dehydrogenation of ethane, PtSn-Mg(Ga)(Al)O displays excellent specific activity for ethene formation. It obtained 25% conversion of ethane in an ethane-poor feed (10% in nitrogen). This work relates the chemical and electronic properties of the catalysts to the chemical activity. Pt is the active site, and Ga has a promotion effect for ethane dehydrogenation. High-resolution transmission electron spectroscopy and Fourier transform infrared spectroscopic characterizations indicate that the addition of Sn and Ga can reduce the size of metal particles, and there is an electronic interaction between Pt and Ga. Further, we found that the calcined Mg(Ga)(Al)O layer double hydrotalcites contain a small amount of pentacoordinate Ga3+ ions, which are able to disperse and stabilize Pt clusters. The promotion of ethane dehydrogenation activity can be attributed to the electronic interactions between Pt and Ga. This insight may provide a new strategy for designing catalysts for light alkane dehydrogenation. (C) 2018 Elsevier Inc. All rights reserved.
资助项目	Natural Science Foundation of China[51476175] ; Natural Science Foundation of China[51536009] ; Natural Science Foundation of China[51776206] ; Natural Science Foundation of China[51706231] ; Natural Science Foundation of Guangdong Province[2017A030310485] ; Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program[2017BT01N092] ; Chinese Academy of Sciences Hundred Talent Program
WOS关键词	PROPANE DEHYDROGENATION ; ISOBUTANE DEHYDROGENATION ; FT-IR ; HYDROGENATION ; SPECTROSCOPY ; PERFORMANCE ; CLUSTERS ; METALS ; PT/MG(GA)(AL)O ; NANOPARTICLES
WOS研究方向	Chemistry ; Engineering
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000452582500008
资助机构	Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province ; Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program ; Chinese Academy of Sciences Hundred Talent Program
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/29819]
专题	中国科学院广州能源研究所
通讯作者	Wang, Chenguang; Ma, Longlong
作者单位	Chinese Acad Sci, Guangdong Prov Key Lab New & Renewable Energy Res, CAS Key Lab Renewable Energy, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Qiao,Zhang, Keting,Zhang, Shaohong,et al. Ga3+-stabilized Pt in PtSn-Mg(Ga)(Al)O catalyst for promoting ethane dehydrogenation[J]. JOURNAL OF CATALYSIS,2018,368:79-88.
APA	Zhang, Qiao.,Zhang, Keting.,Zhang, Shaohong.,Liu, Qiying.,Chen, Lungang.,...&Ma, Longlong.(2018).Ga3+-stabilized Pt in PtSn-Mg(Ga)(Al)O catalyst for promoting ethane dehydrogenation.JOURNAL OF CATALYSIS,368,79-88.
MLA	Zhang, Qiao,et al."Ga3+-stabilized Pt in PtSn-Mg(Ga)(Al)O catalyst for promoting ethane dehydrogenation".JOURNAL OF CATALYSIS 368(2018):79-88.