材料科学技术(英文版)2022，Vol.103Issue(8) ：209-214.

Fabrication of three dimensional SiC@C hybrid for efficient direct dehydrogenation of ethylbenzene to styrene

Jiashun Wang Linlin Wang Jiangyong Diao Xi Xie Guoming Lin Qing Jia Hongyang Liu Guoxin Sui
材料科学技术(英文版)2022，Vol.103Issue(8) ：209-214.
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Fabrication of three dimensional SiC@C hybrid for efficient direct dehydrogenation of ethylbenzene to styrene

Jiashun Wang 1Linlin Wang 2Jiangyong Diao 3Xi Xie 4Guoming Lin 1Qing Jia 1Hongyang Liu 5Guoxin Sui1
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作者信息

  • 1. Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Materials Science and Engineering,University of Science and Technology of China,Hefei 230026,China
  • 2. Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;Department of Chemistry,Northeastern University,Shenyang 110819,China
  • 3. Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China
  • 4. Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China
  • 5. Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Materials Science and Engineering,University of Science and Technology of China,Hefei 230026,China
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Abstract

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 sp2 carbon decorated SiC nanocrystals with core-shell structure(SiC@C)were fab-ricated through a dual-confined magnesiothermic method by employing glucose and SiO2 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 m2 g-1 large 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.

Key words

Silicon carbide/Carbon material/Core-shell structure/Heterogeneous catalysis/Direct dehydrogenation/Ethylbenzene

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基金项目

Ministry of Science and Technology(2016YFA0204100)

National Natural Science Foundation of China(21703261)

National Natural Science Foundation of China(91845201)

National Natural Science Foundation of China(21961160722)

National Natural Science Foundation of China(22072162)

Institute of Metal Research,the Liaoning Revital-ization Talents Program(XLYC1907055)

Sinopec China and the Joint fund between Shenyang National Laboratory for Materi-als Science and State Key Laboratory of Adv(18LHPY010)

出版年

2022
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI
影响因子：0.657
ISSN：1005-0302
参考文献量37
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