Gold/Mg-Al mixed oxides catalysts for oxidative esterification of methacrolein: Effects of support size and composition on gold loading

Wangtao Li; Qiancheng Zheng; Huayu Zhang; Yunsheng Dai; Zhengbao Wang

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Gold/Mg-Al mixed oxides catalysts for oxidative esterification of methacrolein: Effects of support size and composition on gold loading

Full Length Article | Updated：2026-01-06

- Gold/Mg-Al mixed oxides catalysts for oxidative esterification of methacrolein: Effects of support size and composition on gold loading
- Chinese Journal of Chemical Engineering Vol. 64, Issue 12, Pages: 128-138(2023)
- Affiliations：
  
  1. Key Laboratory of Biomass Chemical Engineering of Ministry of Education, ERC of Membrane and Water Treatment (MOE), Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University,Hangzhou,China,310027
  2. Yunnan Precious Metals Laboratory Co., Ltd,Kunming,China,650106
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2023
- Accepted：
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Wangtao Li, Qiancheng Zheng, Huayu Zhang, Yunsheng Dai, Zhengbao Wang. Gold/Mg-Al mixed oxides catalysts for oxidative esterification of methacrolein: Effects of support size and composition on gold loading[J]. Chinese Journal of Chemical Engineering, 2023, 64(12): 128-138.
DOI：

Wangtao Li, Qiancheng Zheng, Huayu Zhang, Yunsheng Dai, Zhengbao Wang. Gold/Mg-Al mixed oxides catalysts for oxidative esterification of methacrolein: Effects of support size and composition on gold loading[J]. Chinese Journal of Chemical Engineering, 2023, 64(12): 128-138. DOI：

摘要

Abstract

Gold catalysts supported on Mg-Al mixed oxides for oxidative esterification of methacrolein are prepared by impregnation. Effects of the support particle size

concentration of HAuCl

solution and Mg/Al ratio on gold loading and catalytic properties are investigated. The catalysts are characterized by CO

-TPD

EDS

XPS

STEM and XRD techniques. Catalysts with smaller support particle size show more uniform gold distribution and higher gold dispersion

resulting in a higher catalytic performance

and the uniformity of gold and the activity of the catalysts with larger support particle size can be improved by decreasing the concentration of HAuCl

solution. The Mg/Al molar ratio has significant effect on the uniformity of gold and the activity of the catalyst

and the optimum Mg/Al molar ratio is 0.1–0.2. This study underlines the importance of engineering support particle size

concentration of HAuCl

solution and density of adsorption sites for efficient gold loading on support by impregnation.

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