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题名: Effect of alumina on Fe-Cu-Zn-K-Al catalyst for synthesis of higher alcohols
作者: Su, YL;  Liu, Y;  Guo, YQ;  Liu, ZM
关键词: alumina ;  higher alcohol ;  iron ;  copper ;  zinc ;  potassium ;  synthesis gas
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2003-10-01
卷: 24, 期:10, 页:799-803
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 influence of the contents of alumina on Fe-Cu-Zn-K-Al catalyst for synthesis of higher alcohols from synthesis gas was investigated. The reaction was carried out under the conditions of n (H-2)/n(CO) = 2. 3, phi (CO2) = 5.0%, little CH4, SV = 5 000 h(-1), p = 6.0 MPa and T = 653 K. The catalytic performance of the catalyst is significantly affected by the specific surface area as it is below 4.0 m(2)/g, and little Al2O3 can effectively increase the specific surface area of the catalyst. When increasing the amount of Al2O3 from 0 to 0.50% in the catalyst, the space-time yield of higher alcohols increases from 0.44 to 0.62 g/(ml.h), and the selectivity for C2+ OH increases from 38.5% to 59.1%. However, the redundant Al2O3 (more than 5.00%) will obviously decrease the productivity of alcohols and the selectivity for C2+ OH. This is because there are both physical and chemical effects of Al2O3 in the catalyst. The TPR and XRD results indicate that the role of Al2O3 is mainly physical effect when omega (Al2O3) = 0 similar to 0.50%, which can stabilize and disperse the active components, so that the modified Fe-Cu-Zn-K-Al can increase the space-time yield of higher alcohols and the selectivity for C2+ OH. In contrast, when omega(Al2O3) > 5.00%, the role of Al2O3 is mainly chemical effect. This is attributed to the interaction between Al2O3 and the other main component, by which a new phase of AlFeO3 in the catalyst would be produced.
语种: 英语
WOS记录号: WOS:000186595800018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138359
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.Zhengzhou Univ, Inst Ind Catalysis, Zhengzhou 450052, Henan, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Su, YL,Liu, Y,Guo, YQ,et al. Effect of alumina on Fe-Cu-Zn-K-Al catalyst for synthesis of higher alcohols[J]. CHINESE JOURNAL OF CATALYSIS,2003,24(10):799-803.
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