摘要
1 引言分子筛作为催化剂由于其特殊的酸性和择形性在精细有机合成中获得了广泛的应用[1],在缩醛化反应中也表现出了良好的催化性能,如Joshi[2]等用HY和HZSM5分子筛作催化剂,将苯甲醛与甲醇缩合,获得了83%的苯甲缩甲醛,并考察了不同种类的醛在HZSM5分子筛上的择形性。王存...
The reaction of acetalization between benzaldehyde and alcohols over Y zeolites with differentratio of SiO 2/Al 2O 3has been studied benzyl aldehyde was obtained in 90% yield.As benzaldehyde was acted on methanol with DUSY 4 zeolite(SiO 2/Al 2O 3) as a catalyst.The catalytic reaction conditions were also investigated,and the optimum reaction conditions were found.The acetalization of benzaldehyde and the other alcohols catalyzed by DUSY 4 were compared with that of methanol.The yield of benzyl aldehyde decreased with the increase of bulk of alcohol molecular.
出处
《化学研究与应用》
CAS
CSCD
1999年第4期386-388,共3页
Chemical Research and Application
