负载型硅钨酸催化剂在异丁烯和甲醛气相缩合法制备异戊二烯反应中的研究  

Gas phase one-step condensation for the synthesis of isoprene from isobutylene and formaldehyde over supported H_3SiW_(12)O_(40) catalysts

作　　者：张跃伟[1] 于雪[2] 

机构地区：[1]吉林化工学院化学与制药工程学院,吉林吉林132022 [2]吉林化工学院科学技术管理处,吉林吉林132022

出　　处：《应用化工》2017年第8期1541-1544,共4页Applied Chemical Industry

基　　金：吉林省科技厅青年科研基金项目(20160520130JH)

摘　　要：选用浸渍法以Al_2O_3、TiO_2、SiO_2为载体制备了几种负载型硅钨酸催化剂,并考察了催化剂在异丁烯和甲醛气相缩合法制备异戊二烯反应中的催化性能,同时,催化剂进行了XRD、TPD、Py-IR表征。结果表明,SiO_2担载的催化剂催化性能最优,异丁烯转化率达到10.1%,异戊二烯选择性达到89.8%。Supported H_3SiW_（12）O_（40） catalysts were prepared with impregnation method,the catalytic activity of resulting composites was evaluated in gas phase one-step condensation from isobutylene and formaldehyde to isoprene.The catalysts were also characterized via XRD,NH_3-TPD and Py-IR techniques.It was found that SiO_2 supported H_3SiW_（12）O_（40） catalysts exhibited the best catalytic performance,isobutene conversion reached 10.1% and isoprene selectivity reached 89.8%.

关 键 词：异丁烯 甲醛 异戊二烯 

分 类 号：TQ032.41[化学工程] O643.3[理学—物理化学]