Highly efficient super activated carbon supported ultra-low loading copper catalyst for the oxidative carbonylation of methanol to dimethyl carbonate

被引：17

作者：

Ren, Xuejing ^{[1
,2
]}

Quan, Yanhong ^{[1
,2
]}

Yang, Wen ^{[1
,2
]}

Zhao, Jinxian ^{[1
,2
]}

Shi, Ruina ^{[1
,2
]}

Ren, Jun ^{[1
,2
]}

机构：

[1] Taiyuan Univ Technol, State Key Lab Clean & Efficient Coal Utilizat, 79 Yingze West St, Taiyuan 030024, Peoples R China

[2] Taiyuan Univ Technol, Key Lab Coal Sci & Technol, Minist Educ, Taiyuan, Peoples R China

来源：

MOLECULAR CATALYSIS | 2022年 / 531卷

基金：

中国国家自然科学基金;

关键词：

Methanol carbonylation; Dimethyl carbonate (DMC); Super activated carbon (SAC); Ultra-low loading; Cu catalysts; CU-BASED NANOPARTICLES; SURFACE-AREA; STABLE CATALYST; CU/AC CATALYST; PERFORMANCE; DECOMPOSITION; SPHERES; OXYGEN; OIL; CO;

D O I：

10.1016/j.mcat.2022.112694

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of copper catalysts with loading less than 1.0 wt% supported on super activated carbon (SAC, 2403 m(2).g(-1)) as well as commercial activated carbon (AC, 1297 m(2).g(-1)) were produced by the wet-impregnation process and applied in methanol oxidative carbonylation to generate dimethyl carbonate (DMC). The 0.5Cu/SAC catalyst showed highly dispersed Cu nanoparticles (NPs, similar to 2.2 nm) and exhibited a turnover frequency (44.6 h(-1)) about four times higher than that of 0.5Cu/AC. The characterization results indicate that the large specific surface area of SAC greatly promoted the dispersion of Cu NPs. In addition, the abundant oxygen-containing groups on SAC enhanced interaction between Cu NPs and carbon support, which maintained the concentration of active Cu-0 sites and facilitated high stability of Cu/SAC catalysts during the reaction. This research provided a novel strategy for fabricating low loading Cu-based catalysts with commercial prospects for the DMC synthesis.

引用

页数：9

共 69 条

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