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CO methanation on ordered mesoporous Ni-Cr-Al catalysts: Effects of the catalyst structure and Cr promoter on the catalytic
Liu, Qing1; Zhong, Ziyi2,3; Gu, Fangna1; Wang, Xiaoyan1; Lu, Xiaopeng1; Li, Huifang1; Xu, Guangwen1; Su, Fabing1
2016-05-01
发表期刊JOURNAL OF CATALYSIS
ISSN0021-9517
卷号337期号:MAY页码:221-232
摘要CO methanation is the main route in industry to produce synthetic natural gas (SNG), and the conventional Ni-based catalysts for this reaction often deactivate severely because of sintering of the Ni particles and coke formation on them. To overcome these technical barriers, we designed and synthesized a group of ternary Ni-Cr-Al metal oxide composites with ordered mesoporous structure and various Cr and Ni contents via a one-pot evaporation-induced self-assembly strategy and tested them for CO methanation to produce SNG. The support and the catalysts before and after the catalytic reaction were thoroughly characterized. It was found that, after reduction at 700 degrees C, metallic Ni particles were generated and anchored in the ordered mesoporous alumina channels while the Cr species started to surround the metallic Ni particles. The long-range ordered mesoporous structure could be maintained well when the total loading of nickel and chromium oxides was below 22 wt.%. In general, the optimized ordered mesoporous Ni-Cr-Al catalysts show much better anti-coking and anti-sintering properties and much higher catalytic activity and stability than the conventional Ni catalysts. The improved catalytic performance is attributed to the reduced Ni particle size, the confinement effect of the mesoporous materials, and the promoting effect of Cr, which can significantly reduce the Ni particle size and increase the H-2 uptake. These findings shed light on the design of ordered mesoporous alumina-supported materials with high loading of active metal oxides for many high-temperature reactions. (C) 2016 Elsevier Inc. All rights reserved.
关键词Co Methanation Ordered Mesoporous Material Ni-cr-al Catalyst Stability
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.jcat.2016.01.023
收录类别SCI
语种英语
关键词[WOS]SYNTHETIC NATURAL-GAS ; SUPPORTED CATALYSTS ; HYDROGEN-PRODUCTION ; CARBON DEPOSITION ; NICKEL ; OXIDES ; DECOMPOSITION ; PERFORMANCE ; SILICA ; RESISTANCE
WOS研究方向Chemistry ; Engineering
WOS类目Chemistry, Physical ; Engineering, Chemical
项目资助者National Natural Science Foundation of China(21476238) ; National High Technology Research and Development Program 863(SS2015AA050502) ; Fund of State Key Laboratory of Multiphase complex systems(MPCS-2015-A-06) ; National Basic Research Program(2014CB744306) ; Open Research Fund of State Key Laboratory of Multiphase Complex Systems(MPCS-2014-D-03) ; "Strategic Priority Research Program" of the Chinese Academy of Sciences(XDA07010100 ; Institute of Chemical and Engineering Sciences in Singapore ; XDA07010200)
WOS记录号WOS:000374920400024
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21040
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Inst Chem & Engn Sci, 1 Pesek Rd, Singapore 627833, Singapore
3.Nanyang Technol Univ, Sch Chem & Biomed Engn, 62 Nanyang Dr, Singapore 637459, Singapore
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Liu, Qing,Zhong, Ziyi,Gu, Fangna,et al. CO methanation on ordered mesoporous Ni-Cr-Al catalysts: Effects of the catalyst structure and Cr promoter on the catalytic[J]. JOURNAL OF CATALYSIS,2016,337(MAY):221-232.
APA Liu, Qing.,Zhong, Ziyi.,Gu, Fangna.,Wang, Xiaoyan.,Lu, Xiaopeng.,...&Su, Fabing.(2016).CO methanation on ordered mesoporous Ni-Cr-Al catalysts: Effects of the catalyst structure and Cr promoter on the catalytic.JOURNAL OF CATALYSIS,337(MAY),221-232.
MLA Liu, Qing,et al."CO methanation on ordered mesoporous Ni-Cr-Al catalysts: Effects of the catalyst structure and Cr promoter on the catalytic".JOURNAL OF CATALYSIS 337.MAY(2016):221-232.
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