| Pd-Pb/Al2O3催化剂上甲基丙烯醛氧化酯化合成甲基丙烯酸甲酯 |
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| 引用本文： | 董海峰,李增喜,王正平,成卫国,赵威,张香平,张锁江. Pd-Pb/Al2O3催化剂上甲基丙烯醛氧化酯化合成甲基丙烯酸甲酯[J]. 化工学报, 2006, 57(6): 1346-1350 |
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| 作者姓名： | 董海峰 李增喜 王正平 成卫国 赵威 张香平 张锁江 |
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| 作者单位： | 中国科学院过程工程研究所，北京 100080 ;哈尔滨工程大学化工学院，黑龙江 哈尔滨 150001;中国科学院研究生院，北京 100049 ; |
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| 基金项目： | 国家自然科学基金 , 高比容电子铝箔的研究开发与应用项目 |
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| 摘 要： | 引言 甲基丙烯酸甲酯(MMA)是生产有机玻璃(PMMA)的核心单体,目前主要采用丙酮氰醇法(ACH法)生产,此法工艺流程长、原子经济性低(约47%)、经济效益差、环境污染严重,因此,开发一条绿色高效的合成工艺路线意义重大.
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| 关 键 词： | 甲基丙烯醛 甲基丙烯酸甲酯 氧化酯化 |
| 文章编号： | 0438-1157（2006）06-1346-05 |
| 收稿时间： | 2005-08-26 |
| 修稿时间： | 2005-08-262005-12-07 |
Oxidative esterification of methacrolein to methyl methacrylate over Pd-Pb/Al2O3 catalysts |
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| DONG Haifeng,LI Zengxi,WANG Zhengping,CHENG Weiguo,ZHAO Wei,ZHANG Xiangping,ZHANG Suojiang. Oxidative esterification of methacrolein to methyl methacrylate over Pd-Pb/Al2O3 catalysts[J]. Journal of Chemical Industry and Engineering(China), 2006, 57(6): 1346-1350 |
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| Authors: | DONG Haifeng LI Zengxi WANG Zhengping CHENG Weiguo ZHAO Wei ZHANG Xiangping ZHANG Suojiang |
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| Affiliation: | 1 Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China;2 School of Chemical Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, China ; 3 Graduate School of Chinese Academy of Sciences, Beijing 100049, China |
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| 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 ml•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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| Keywords: | methacrolein methyl methacrylate oxidative esterification |
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