Oxidative esterification of methacrolein to methyl methacrylate over Pd-Pb/Al<sub>2</sub>O<sub>3</sub> catalysts

DONG Haifeng; LI Zengxi; WANG Zhengping; CHENG Weiguo; ZHAO Wei; ZHANG Xiangping; ZHANG Suojiang

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Oxidative esterification of methacrolein to methyl methacrylate over Pd-Pb/Al₂O₃ catalysts

更新时间：2025-12-10

- Oxidative esterification of methacrolein to methyl methacrylate over Pd-Pb/Al₂O₃ catalysts
- CIESC Journal Issue 6, Pages: 1346-1350(2006)
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- Online First：25 June 2006，
  
  Published：25 June 2006
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DONG Haifeng, LI Zengxi, WANG Zhengping, et al. Oxidative esterification of methacrolein to methyl methacrylate over Pd-Pb/Al₂O₃ catalysts[J]. CIESC Journal, 2006, (6): 1346-1350.
DOI：

DONG Haifeng, LI Zengxi, WANG Zhengping, et al. Oxidative esterification of methacrolein to methyl methacrylate over Pd-Pb/Al₂O₃ catalysts[J]. CIESC Journal, 2006, (6): 1346-1350. DOI：

摘要

Abstract

The Pd-Pb catalyst supported on Al2O3 was prepared by the two-step impregnation method.The oxidative esterification of methacrolein (MAL) to methyl methacrylate (MMA) was carried out in a stainless bubble autoclave over the catalyst.The influences of the reaction conditions on catalytic activity were investigated in detail.The optimal reaction conditions were as follows: T=80℃

P=0.3 MPa

methanol∶MAL=8∶1 ( molar ratio )

catalyst mass concentration in the reaction system 3.84%

pH of the reaction system 7—8

oxygen flux rate 30 ml8226;min-1.Under the above conditions

MAL conversion and MMA selectivity reached 91% and 84%

respectively.The catalyst was recycled for seven times and still kept good selectivity.

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LI Zengxi

ZHANG Suojiang

PANG Haijian

DONG Haifeng

ZHANG Xiangping

ZHAO Wei

HUANG Heng

ZHANG Yongfeng

Related Institution

中国科学院过程工程研究所绿色化学与技术课题组

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南京工业大学生物与制药工程学院

武汉理工大学材料复合新技术国家重点实验室

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Oxidative esterification of methacrolein to methyl methacrylate over Pd-Pb/Al2O3 catalysts

DOI：

摘要

Abstract

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Oxidative esterification of methacrolein to methyl methacrylate over Pd-Pb/Al₂O₃ catalysts