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Effect of alumina on Fe-Cu-Zn-K-Al catalyst for synthesis of higher alcohols
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
2003-10-01
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
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138359
专题中国科学院大连化学物理研究所
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
推荐引用方式
GB/T 7714
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.
APA Su, YL,Liu, Y,Guo, YQ,&Liu, ZM.(2003).Effect of alumina on Fe-Cu-Zn-K-Al catalyst for synthesis of higher alcohols.CHINESE JOURNAL OF CATALYSIS,24(10),799-803.
MLA Su, YL,et al."Effect of alumina on Fe-Cu-Zn-K-Al catalyst for synthesis of higher alcohols".CHINESE JOURNAL OF CATALYSIS 24.10(2003):799-803.
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