One-step synthesis of methylmethaerylate from methacrolein over Keggin-type heteropoly compounds

被引：20
|
作者：
Guo, Xiaojun [1 ]
Huang, Chongpin [1 ]
Chen, Biaohua [1 ]
机构：
[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
来源：
KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2008年 / 25卷 / 04期
关键词：
methylmethacrylate; methacrolein; HPCs; counter ions;
D O I：
10.1007/s11814-008-0111-5
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
One-step synthesis of methylmethacry late (MMA) using heteropoly compounds (HPCs) as catalysts was demonstrated by feeding a mixture of methacrolein (MAL), air, water, nitrogen and MeOH (methanol). The HPCs with different counter-ions, such as H1.7Cs1.5Cu0.25As0.1PMo11VO40 (CsPMo11VO40), H(1.7)La(0.7)Cu(0.2)5As(0.1)PMo(11)VO(40)(LaPMo11VO40) and H1.7K1.5Cu0.25As0.1PMo11VO40 (KPMo11VO40), were studied in oxidation of MAL, esterification of methacrylic acid (MAA) and one-step synthesis of MMA from MAL, respectively. The selectivity of MAA was up to 45.7% and MMA was 44.6% with 93.3% MAL conversion over CsPMo11VO40.
引用
收藏
页码：675 / 680
页数：6
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