Interfacial Reaction-Directed Green Synthesis of CeO2-MnO2 Catalysts for Imine Production through Oxidative Coupling of Alcohols and Amines

被引：11

作者：

Li, Jingwen ^{[1
]}

Hu, Riming ^{[3
]}

Liu, Wei ^{[2
]}

Gao, Daowei ^{[1
]}

Zhao, Huaiqing ^{[1
]}

Li, Chunsheng ^{[1
]}

Jiang, Xuchuan ^{[3
]}

Chen, Guozhu ^{[1
]}

机构：

[1] Univ Jinan, Sch Chem & Chem Engn, Jinan 250022, Shandong, Peoples R China

[2] Univ Jinan, Sch Water Conservancy & Environm, Jinan 250022, Shandong, Peoples R China

[3] Univ Jinan, Inst Smart Mat & Engn, Jinan 250022, Shandong, Peoples R China

来源：

INORGANIC CHEMISTRY | 2023年 / 62卷 / 08期

基金：

中国国家自然科学基金;

关键词：

O TRANSFER CYCLE; SELECTIVE OXIDATION; IN-SITU; OXIDE; DESIGN; CARBON; CEO2;

D O I：

10.1021/acs.inorgchem.3c00095

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Direct oxidative coupling of alcohols with amines over cheap but efficient catalysts is a promising choice for imine formation. In this study, porous CeO2-MnO2 binary oxides were prepared via an interfacial reaction between Ce2(SO4)3 and KMnO4 at room temperature without any additives. The as-prepared porous CeO2-MnO2 catalyst has a higher fraction of Ce3+, Mn3+, and Mn4+ and contains larger surface area and more oxygen vacancies. During the oxidative coupling reaction of alcohol with amine to imine, the as-obtained CeO2-MnO2 catalyst is motivated by the above encouraging characteristics and exhibits superior catalytic activity (98% conversion and 97% selectivity) and can also work effectively under a wide scope of temperatures and substrates. The in-depth in situ DRIFTS and density functional theory (DFT) results demonstrate that there is a strong interaction between CeO2 and MnO2 in the CeO2-MnO2 catalyst, exhibiting especially a positive synergistic effect in the direct coupling of alcohol and amine reaction.

引用

页码：3692 / 3702

页数：11