Vapor-phase hydrogenation of dimethyl oxalate over a CNTs-Cu-SiO2 hybrid catalyst with enhanced activity and stability

被引：19

作者：

Lin, Haiqiang ^{[1
,2
]}

Duan, Xinping ^{[1
]}

Zheng, Jianwei ^{[1
,2
]}

Zheng, Xinlei ^{[1
]}

He, Ping ^{[1
]}

Yuan, Youzhu ^{[1
]}

Yang, Yanhui ^{[2
]}

机构：

[1] Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Natl Engn Lab Green Chem Prod Alcohols Ethers Est, Xiamen 361005, Peoples R China

[2] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637459, Singapore

来源：

RSC ADVANCES | 2013年 / 3卷 / 29期

关键词：

CARBON NANOTUBES; SELECTIVE HYDROGENATION; CO/CO2; HYDROGENATION; HIGH-PERFORMANCE; HIGHER ALCOHOLS; NANOPARTICLES; CO; CINNAMALDEHYDE; PROMOTER;

D O I：

10.1039/c3ra41335g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hybrids containing carbon nanotubes (CNTs) have attracted considerable attention in heterogeneous catalysis. In this study, a CNTs-Cu-SiO2 hybrid fabricated by urea-assisted gelation is disclosed to display excellent activity and outstanding long-term stability in the vapor-phase hydrogenation of dimethyl oxalate (DMO). Appropriate hybridization of CNTs with Cu-SiO2 results in enhanced Cu dispersion, which is suggested to be one of the key factors in determining the catalytic performance of copper catalysts. Furthermore, the growth of Cu nanoparticles (NPs) during the catalyst activation, DMO hydrogenation and severe aging tests is distinctively inhibited by incorporating CNTs into Cu-SiO2, leading to remarkably enhanced catalytic stability. The adsorption and activation of hydrogen on this particular hybrid catalyst are also influenced by the CNTs introduction.

引用

页码：11782 / 11789

页数：8

共 39 条

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