气固相催化合成吡咯的催化剂的研究  

Heterogeneous catalysts for the synthesis of pyrrole from furan and ammonia

作　　者：贾梦秋[1] 朱照琪[1] 薛传薪[1] 

机构地区：[1]北京化工大学理学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2006年第3期98-102,共5页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：以ZSM-5、SiO2-Al2O3和Al2O3为催化剂，在连续流动固定床反应器中，以氨与呋喃为原料催化合成吡咯。用程序升温氨脱附法（NH3-TPD）测定了催化剂表面相对酸强度及酸草分布，筛选出了催化活性好和选择性高的SiO2-Al2O3-d硅酸铝催化剂，并对金属氧化物进行了改性。在反应温度为425～435℃、摩尔比n（氨）：n（呋喃）为10：1以及催化剂负荷（以呋喃计）为16．6mmol／h·g的条件下，吡咯的收率可达90％以上。The synthesis of pyrrole by reaction of furan and ammonia has been studied in a continuous flow reactor using ZSM-5, SiCh-Al2O3 and Al2O3 as heterogeneous catalysts. The relative acid strengths and number of acid sites on the surface of the catalysts is monitored by NH3-TPD. The best catalyst, SiO2-Al2O3-d, can be fur- ther improved by addition of cadmium and strontium oxides as promoters. The maximum observed yield of 90 96 is accomplished with a reaction temperature 425 - 435 ℃, molar ratio of NH3 ： furan = 10 ： 1 and catalyst loading 16.6 mmol/h· g （based on furan）.

关 键 词：呋喃 吡咯 ZSM-5 硅酸铝 氧化铝 

分 类 号：O643.36[理学—物理化学]