A structured catalyst with high dispersity of Au species based on hollow SiC foam with porous walls for acetylene hydrochlorination

doi:10.1039/d1ra02533c

IMR OpenIR

	A structured catalyst with high dispersity of Au species based on hollow SiC foam with porous walls for acetylene hydrochlorination
	Wang, Peng 1,2; Yang, Xiaodan 2; Zhang, Ye 1,2; Gao, Yong 2; Zhang, Jinsong 2
通讯作者	Zhang, Jinsong(jszhang@imr.ac.cn)
	2021-06-11
发表期刊	RSC ADVANCES
卷号	11 期号:32 页码:19819-19826
摘要	It is essential to improve the catalytic stability of Au-based catalysts for acetylene hydrochlorination. In this study, a novel hollow SiC foam with porous walls (HSFp) is proposed to modify the Au catalyst distribution on the foam-based structured catalyst. The scanning electron microscopy and 3D X-ray tomography results showed that the hollow structure and the porous ceramic wall of HSFp were successfully obtained. An Au/AC/HSF structured catalyst was prepared by the slurry-coating and impregnation method. Then the effects of the wall pore structure of HSFp on the distribution of Au species and the stability of the catalyst were studied by comparison with a hollow SiC foam with compact walls (HSFc). The HSFp with 3D interconnected hollow channel structure was demonstrated to have a promotion effect on the reaction stability due to its ability to refine the catalyst particles during the impregnation and drying processes. The result indicates that the time on stream of acetylene conversion above 90% over the Au/AC/HSFp structured catalyst reaches about 380 h at an acetylene gaseous hourly space velocity of 130 h(-1), which is much longer than that of the Au/AC/HSFc. In addition, a bidirectional diffusion effect that can enhance the catalyst distribution by the porous wall of HSF was proposed in this paper. This may have positive significance in the field of preparation of structured catalysts.
资助者	Shenyang National Laboratory for Materials Science (SYNL) Program for Youth Talent
DOI	10.1039/d1ra02533c
收录类别	SCI
语种	英语
资助项目	Shenyang National Laboratory for Materials Science (SYNL) Program for Youth Talent[L2020F38]
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000660243300051
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/160521
专题	中国科学院金属研究所
通讯作者	Zhang, Jinsong
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, Peng,Yang, Xiaodan,Zhang, Ye,et al. A structured catalyst with high dispersity of Au species based on hollow SiC foam with porous walls for acetylene hydrochlorination[J]. RSC ADVANCES,2021,11(32):19819-19826.
APA	Wang, Peng,Yang, Xiaodan,Zhang, Ye,Gao, Yong,&Zhang, Jinsong.(2021).A structured catalyst with high dispersity of Au species based on hollow SiC foam with porous walls for acetylene hydrochlorination.RSC ADVANCES,11(32),19819-19826.
MLA	Wang, Peng,et al."A structured catalyst with high dispersity of Au species based on hollow SiC foam with porous walls for acetylene hydrochlorination".RSC ADVANCES 11.32(2021):19819-19826.