Highly efficient supported bimetallic Au-Pd catalysts for oxidative esterification of methacrolein to methyl methacrylate

被引：1

作者：

Yang, Yubo ^{[1
]}

Zheng, Yanxia ^{[1
]}

Cai, Lu ^{[1
]}

Li, Yuchao ^{[1
]}

Xu, Rui ^{[1
]}

Zuo, Cuncun ^{[1
]}

Huang, Haofei ^{[1
]}

Wang, Ming ^{[1
]}

Dai, Ruihui ^{[2
]}

Zhang, Liping ^{[3
]}

Zhao, Yansong ^{[4
]}

机构：

[1] Shandong Univ Technol, Inst Clean Chem Technol, Shandong Collegial Engn Res Ctr Novel Rare Earth C, Sch Chem & Chem Engn, Zibo, Shandong, Peoples R China

[2] Agr Univ Hebei, Dept Sci & Engn, Cangzhou, Peoples R China

[3] Zibo Interenergy Technol Ltd Co, Zibo, Shandong, Peoples R China

[4] Western Norway Univ Appl Sci HVL, Fac Engn & Sci, Dept Safety Chem & Biomed Lab Sci, Bergen, Norway

来源：

CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 2024年 / 102卷 / 07期

关键词：

Au-Pd bimetallic catalysts; methyl methacrylate; oxidative esterification; synergic effect; SOLVENT-FREE OXIDATION; NANOPARTICLES; ALDEHYDES; ALCOHOLS; ETHANOL; OXYGEN;

D O I：

10.1002/cjce.25220

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Au-Pd alloy particles supported on TiO2 were synthesized by the sol-immobilized method and their confirmation was achieved through transmission electron microscope (TEM) and energy dispersive spectrometer (EDS) mapping. The samples were subjected to oxidative esterification of methacrolein with methanol to methyl methacrylate (MMA). Notably, a remarkable enhancement of catalytic performance was found in the presence of Pd. Among the samples tested, the sample Au0.25Pd0.75/TiO2 exhibited the highest catalytic performance. The interaction between Au and Pd demonstrated a synergistic effect, with Pd contributing to the stability of Au nanoparticles and strengthening the production of active oxygen species, which facilitated the efficient removal of hydrogen from intermediate hemiacetal. Furthermore, a probable reaction mechanism was proposed to explain these observations.

引用

页码：2468 / 2480

页数：13

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