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题名: Effects of Li Promoter on the Performance of Co/AC Catalysts for CO Hydrogenation to Mixed Linear alpha-Alcohols
作者: Pei Yanpeng1, 3;  Ding Yunjie1, 2;  Zang Juan1, 3;  Song Xiangen1, 3;  Dong Wenda1, 3;  Zhu Hejun1;  Wang Tao1;  Chen Weimiao1
关键词: syngas ;  mixed linear alpha-alcohol ;  lithium promoter ;  cobalt carbide species
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2012-05-01
DOI: 10.3724/SP.J.1088.2012.10917
卷: 33, 期:5, 页:808-812
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The effect of Li promoter on the catalytic performance of the activated carbon (AC) supported cobalt catalysts (Co/AC) for CO hydrogenation was investigated by means of CO hydrogenation, X-ray diffraction (XRD), temperature-programmed reduction (H-2-TPR), and temperature-programmed desorption of adsorbed CO (CO-TPD). The results showed that the addition of Li significantly suppressed the formation of gaseous hydrocarbons and remarkably improved the selectivities for higher hydrocarbons (C5+) and mixed linear alpha-alcohols (C-1-C-18) of CO hydrogenation over the Co/AC catalyst. However, the activity of CO hydrogenation decreased gradually with the increase of Li loading in the Co-based catalyst. H-2-TPR and CO-TPD results illuminated that the existence of Li decreased the reducibility of Co2+ and the ability of CO dissociation, which was the rate-determining step. XRD results indicated that the existence of Li promoter enhanced the formation of Co2C species.
关键词[WOS]: FISCHER-TROPSCH SYNTHESIS ;  POTASSIUM PROMOTER ;  SYNGAS
语种: 英语
WOS记录号: WOS:000304019200010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138009
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Pei Yanpeng,Ding Yunjie,Zang Juan,et al. Effects of Li Promoter on the Performance of Co/AC Catalysts for CO Hydrogenation to Mixed Linear alpha-Alcohols[J]. CHINESE JOURNAL OF CATALYSIS,2012,33(5):808-812.
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