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Clarification of Active Sites at Interfaces between Silica Support and Nickel Active Components for Carbon Monoxide Methanation
Zhang, MJ (Zhang, Mengjuan); Li, PP (Li, Panpan); Tian, ZQ (Tian, Zhiqun); Zhu, MY (Zhu, Mingyuan); Wang, F (Wang, Fu); Li, JB (Li, Jiangbing); Dai, B (Dai, Bin); Yu, F (Yu, Feng); Qiu, HS (Qiu, Hengshan); Gao, HW (Gao, Hongwei)
2018
发表期刊CATALYSTS
卷号8期号:7
摘要

Identification of active site is critical for developing advanced heterogeneous catalysis. Here, a nickel/silica (Ni/SiO2) catalyst was prepared through an ammonia-evaporation method for CO methanation. The as-obtained Ni/SiO2 catalyst shows a CO conversion of 96.74% and a methane selectivity of 93.58% at 623 K with a weight hourly space velocity of 25,000 mL.g(-1).h(-1). After 150 h of continuous testing, the CO conversion still retains 96%, which indicates a high catalyst stability and long life. An in situ vacuum transmission infrared spectrum demonstrates that the main active sites locate at the interface between the metal Ni and the SiO2 at a wave number at 2060 cm(-1) for the first time. The interesting discovery of the active site may offer a new insight for design and synthesis of methanation catalysts.

关键词Active Sites Carbon Monoxide Methanation Ammonia-evaporation Method In Situ Vacuum Transmission Infrared Spectroscopy Density-functional Theory
DOI10.3390/catal8070293
收录类别SCI
WOS记录号WOS:000440016400040
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/5513
专题环境科学与技术研究室
作者单位1.Shihezi Univ, Key Lab Green Proc Chem Engn Xinjiang Bingtuan, Sch Chem & Chem Engn, Shihezi 832003, Peoples R China
2.Guangxi Univ, Collaborat Innovat Ctr Renewable Energy Mat, Nanning 530004, Peoples R China
3.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China
4.Ludong Univ, Sch Life Sci, Yantai 264025, Peoples R China
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GB/T 7714
Zhang, MJ ,Li, PP ,Tian, ZQ ,et al. Clarification of Active Sites at Interfaces between Silica Support and Nickel Active Components for Carbon Monoxide Methanation[J]. CATALYSTS,2018,8(7).
APA Zhang, MJ .,Li, PP .,Tian, ZQ .,Zhu, MY .,Wang, F .,...&Gao, HW .(2018).Clarification of Active Sites at Interfaces between Silica Support and Nickel Active Components for Carbon Monoxide Methanation.CATALYSTS,8(7).
MLA Zhang, MJ ,et al."Clarification of Active Sites at Interfaces between Silica Support and Nickel Active Components for Carbon Monoxide Methanation".CATALYSTS 8.7(2018).
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