Catalytic upgrading of ethanol to n-butanol over Cu-La2O3-Al2O3/SBA-15 catalyst

被引：0

作者：

Huang H. ^{[1
]}

Zhao H.-J. ^{[1
]}

Shen X.-Y. ^{[1
]}

Jiang D.-H. ^{[1
]}

Li X.-N. ^{[1
]}

机构：

[1] Institute of Industrial Catalysis, Zhejiang University of Technology, Hangzhou

来源：

Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2022年 / 36卷 / 01期

关键词：

Cu-based catalysts; Ethanol; N-butanol; Ordered mesoporous silica zeolite(SBA-15);

D O I：

10.3969/j.issn.1003-9015.2022.01.007

中图分类号：

学科分类号：

摘要：

The ordered mesoporous silica zeolite (SBA-15) was used as support to prepare Cu-supported catalyst for improving the activity, selectivity and stability of Cu-based catalysts. Cu-La2O3-Al2O3/SBA-15 catalyst was prepared by simple co-impregnation method and applied to catalytic upgrading of ethanol to n-butanol reaction in a fixed-bed reactor. Under the reaction conditions of 533 K, 3 MPa, liquid hourly space velocity (LHSV)=2 mL∙h-1∙g-1 and V(N2)/ V(EtOH)=250:1, the catalyst exhibited 46.8% ethanol conversion and 48.9% n-butanol selectivity, and showed excellent stability in 120 h on-stream evaluation. The highly dispersed Al2O3 and La2O3 species on the SBA-15 support provided a large number of acid-base sites which can efficiently promote aldol condensation of acetaldehyde, while the highly dispersed and stable Cu species provided a large number of dehydrogenation/hydrogenation sites. The synergy of the Cu and acid-base sites is responsible for the excellent catalytic properties of Cu-La2O3-Al2O3/SBA-15 catalyst. © 2022, Editorial Board of Journal of Chemical Engineering of Chinese Universities". All right reserved."

引用

页码：53 / 59

页数：6

共 30 条

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