Enhanced catalytic performances of Ni/Al2O3 catalyst via addition of V2O3 for CO methanation
文献类型：期刊论文
| 作者 | Liu, Qing1; Gu, Fangna1; Lu, Xiaopeng1; Liu, Youjun1; Li, Huifang1; Zhong, Ziyi2; Xu, Guangwen1; Su, Fabing1 |
| 刊名 | APPLIED CATALYSIS A-GENERAL
 |
| 出版日期 | 2014-11-01 |
| 卷号 | 488期号:NOV页码:37-47 |
| ISSN号 | 0926-860X |
| 关键词 | Ni/Al2O3 catalyst Vanadium oxide Ni3V2O8 CO methanation CO2 methanation |
| 其他题名 | Appl. Catal. A-Gen. |
| 中文摘要 | Highly active and coking resistant Ni-V2O3/Al2O3 catalysts were prepared by co-impregnation method for CO and CO2 methanation. The influence of vanadium oxide addition on catalyst structure, distribution and reducibility of Ni species, morphology and surface characteristics, was investigated in detail. Compared to the catalyst without vanadium, the Ni-V2O3/Al2O3 catalysts showed significant improvement in the activity, thermal stability, and resistance to coke formation in CO methanation. In addition, these catalysts also showed high activities for CO2 methanation at both atmospheric and 2.0 MPa pressures. It was found that Ni3V2O8 was formed during the calcination of the Ni-V2O3/Al2O3 catalysts, which led to the formation of smaller Ni particle sizes (ca. 3.0 nm) as compared to the case without vanadium oxide addition. The higher catalytic activity over the Ni-V2O3/Al2O3 catalysts for CO methanation was mainly due to the larger H-2 uptake, the higher Ni dispersion as well as the smaller metallic Ni nanoparticles. The oxidation-reduction cycle of V2O3 could increase the oxygen vacancies, which enhanced the dissociation of CO2 by-product and generated surface oxygen intermediates, thus preventing carbon deposition on the Ni particles in CO methanation. (C) 2014 Elsevier B.V. All rights reserved. |
| 英文摘要 | Highly active and coking resistant Ni-V2O3/Al2O3 catalysts were prepared by co-impregnation method for CO and CO2 methanation. The influence of vanadium oxide addition on catalyst structure, distribution and reducibility of Ni species, morphology and surface characteristics, was investigated in detail. Compared to the catalyst without vanadium, the Ni-V2O3/Al2O3 catalysts showed significant improvement in the activity, thermal stability, and resistance to coke formation in CO methanation. In addition, these catalysts also showed high activities for CO2 methanation at both atmospheric and 2.0 MPa pressures. It was found that Ni3V2O8 was formed during the calcination of the Ni-V2O3/Al2O3 catalysts, which led to the formation of smaller Ni particle sizes (ca. 3.0 nm) as compared to the case without vanadium oxide addition. The higher catalytic activity over the Ni-V2O3/Al2O3 catalysts for CO methanation was mainly due to the larger H-2 uptake, the higher Ni dispersion as well as the smaller metallic Ni nanoparticles. The oxidation-reduction cycle of V2O3 could increase the oxygen vacancies, which enhanced the dissociation of CO2 by-product and generated surface oxygen intermediates, thus preventing carbon deposition on the Ni particles in CO methanation. (C) 2014 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine |
| 类目[WOS] | Chemistry, Physical ; Environmental Sciences |
| 研究领域[WOS] | Chemistry ; Environmental Sciences & Ecology |
| 关键词[WOS] | SYNTHETIC NATURAL-GAS ; PROMOTED RHODIUM CATALYSTS ; CARBON-DIOXIDE ; OXIDATIVE DEHYDROGENATION ; NI/TIO2 CATALYST ; OVEN GAS ; HYDROGENATION ; VANADIUM ; SYNGAS ; TEMPERATURE |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000346214100005 |
| 公开日期 | 2015-04-01 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/11794]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.ASTAR, Inst Chem Engn & Sci, Jurong Island 627833, Singapore |
| 推荐引用方式 GB/T 7714 | Liu, Qing,Gu, Fangna,Lu, Xiaopeng,et al. Enhanced catalytic performances of Ni/Al2O3 catalyst via addition of V2O3 for CO methanation[J]. APPLIED CATALYSIS A-GENERAL,2014,488(NOV):37-47. |
| APA | Liu, Qing.,Gu, Fangna.,Lu, Xiaopeng.,Liu, Youjun.,Li, Huifang.,...&Su, Fabing.(2014).Enhanced catalytic performances of Ni/Al2O3 catalyst via addition of V2O3 for CO methanation.APPLIED CATALYSIS A-GENERAL,488(NOV),37-47. |
| MLA | Liu, Qing,et al."Enhanced catalytic performances of Ni/Al2O3 catalyst via addition of V2O3 for CO methanation".APPLIED CATALYSIS A-GENERAL 488.NOV(2014):37-47. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。