Fabrication of three dimensional SiC@C hybrid for e?cient direct dehydrogenation of ethylbenzene to styrene

IMR OpenIR

	Fabrication of three dimensional SiC@C hybrid for e?cient direct dehydrogenation of ethylbenzene to styrene
	Wang Jiashun; Wang Linlin; Diao Jiangyong; Xie Xi; Lin Guoming; Jia Qing; Liu Hongyang; Sui Guoxin
	2022
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	103 页码:209-214
摘要	Synthesis of hybrid carbon materials with core-shell structure and robust catalytic performance is of great research interest, and remains a great challenge in catalytic dehydrogenation of hydrocarbons reaction. In this paper, few-layer sp~2 carbon decorated SiC nanocrystals with core-shell structure (SiC@C) were fabricated through a dual-confined magnesiothermic method by employing glucose and SiO_2 as precursors. The SiC@C nanocrystals were further crosslinked to be a three dimensional (3D) mesoporous hybrid by the in situ generated carbon as binders and exhibiting a 410.30 m 2 g_(large)~(-1) surface area. The as-prepared SiC@C hybrid materials as metal-free catalysts were evaluated in the steam-free direct dehydrogenation of ethylbenzene to styrene. Benefiting from the abundant surface carbonyl groups on the graphite carbon layers, the optimized yield rate of styrene normalized by carbon mass was as high as 11.58 mmol g~(-1) carbon h~(-1), nearly 4 times that of nanodiamonds. Considering the low cost and excellent catalytic activity, the hybrid 3D SiC@C material may be a promising candidate for direct dehydrogenation of hydrocarbons.
关键词	Silicon carbide Carbon material Core-shell structure Heterogeneous catalysis Direct dehydrogenation Ethylbenzene
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179679
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Wang Jiashun,Wang Linlin,Diao Jiangyong,et al. Fabrication of three dimensional SiC@C hybrid for e?cient direct dehydrogenation of ethylbenzene to styrene[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,103:209-214.
APA	Wang Jiashun.,Wang Linlin.,Diao Jiangyong.,Xie Xi.,Lin Guoming.,...&Sui Guoxin.(2022).Fabrication of three dimensional SiC@C hybrid for e?cient direct dehydrogenation of ethylbenzene to styrene.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,103,209-214.
MLA	Wang Jiashun,et al."Fabrication of three dimensional SiC@C hybrid for e?cient direct dehydrogenation of ethylbenzene to styrene".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 103(2022):209-214.