作　　者： ; ; ; ; ;

机构地区： 中国科学院过程工程研究所

出　　处： 《化工学报》 2004年第12期2082-2085,共4页

摘　　要： The catalysts used for manufacturing methyl methacrylate (MMA) by two-step conversion of isobutylene via methacrolein (MAL) were studied. The selective oxidation of isobutylene to MAL was carried out in a fixed-bed flow microreactor using a series of Mo-Bi-containing catalysts and the oxidative esterification of MAL to MMA was carried out in a slurry-bed reactor using a series of palladium-containing catalysts.By means of BET and XPS, the properties of the catalysts were characterized.It was found that the performance of Mo-Bi-Co-Fe-Ce-O catalyst was improved distinctly when Cs was added for the selective oxidation of isobutylene to MAL, and the Pd 5Bi 2PbFe/CaCO 3 catalyst with the loading sequence of Pd, Pb and Bi, Fe showed the best performance for the oxidative esterification of MAL to MMA. The catalysts used for manufacturing methyl methacrylate (MMA) by two-step conversion of isobutylene via methacrolein (MAL) were studied. The selective oxidation of isobutylene to MAL was carried out in a fixed-bed flow microreactor using a series of Mo-Bi-containing catalysts and the oxidative esterification of MAL to MMA was carried out in a slurry-bed reactor using a series of palladium-containing catalysts. By means of BET and XPS, the properties of the catalysts were characterized. It was found that the performance of Mo-Bi-Co-Fe-Ce-O catalyst was improved distinctly when Cs was added for the selective oxidation of isobutylene to MAL, and the Pd5Bi2PbFe/CaCO3 catalyst with the loading sequence of Pd, Pb and Bi, Fe showed the best performance for the oxidative esterification of MAL to MMA.

关 键 词： 异丁烯 甲基丙烯醛 甲基丙烯酸甲酯 催化反应 清洁工艺

领　　域： [理学] [理学]