CO methanation on ordered mesoporous Ni-Cr-Al catalysts: Effects of the catalyst structure and Cr promoter on the catalytic
文献类型：期刊论文
| 作者 | Liu, Qing1; Zhong, Ziyi2,3; Gu, Fangna1; Wang, Xiaoyan1; Lu, Xiaopeng1; Li, Huifang1; Xu, Guangwen1; Su, Fabing1 |
| 刊名 | JOURNAL OF CATALYSIS
 |
| 出版日期 | 2016-05-01 |
| 卷号 | 337期号:MAY页码:221-232 |
| 关键词 | CO methanation Ordered mesoporous material Ni-Cr-Al catalyst Stability |
| ISSN号 | 0021-9517 |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Physical ; Engineering, Chemical |
| 研究领域[WOS] | Chemistry ; Engineering |
| 关键词[WOS] | SYNTHETIC NATURAL-GAS ; SUPPORTED CATALYSTS ; HYDROGEN-PRODUCTION ; CARBON DEPOSITION ; NICKEL ; OXIDES ; DECOMPOSITION ; PERFORMANCE ; SILICA ; RESISTANCE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000374920400024 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/21040]  |
| 专题 | 过程工程研究所_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 |
| 推荐引用方式 GB/T 7714 | 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. |
入库方式： OAI收割
来源：过程工程研究所
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