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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
KeywordAlumina Higher Alcohol Iron Copper Zinc Potassium Synthesis Gas
Source PublicationCHINESE JOURNAL OF CATALYSIS
2003-10-01
Volume24Issue:10Pages:799-803
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
AbstractThe 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.
Language英语
WOS IDWOS:000186595800018
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/138359
Collection中国科学院大连化学物理研究所
Affiliation1.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
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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