水蒸气存在下呋喃和氨反应制备吡咯  

PREPARATION OF PYRROLE FROM FURAN AND AMMONIAWITH PRESENCE OF WATER VAPOR

作　　者：娄智慧[1] 贾梦秋[1] 薛传薪[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029

出　　处：《化工学报》2003年第3期403-407,共5页CIESC Journal

摘　　要：Using aluminium silicate-composing catalyst,pyrrole was prepared from furan and ammonia by intra-annular heteroatomic substitution reaction with presence of water vapor. As for the preparation of aluminium silicate-composing catalyst,the effect of various technical parameters and promotor action on the catalytic performance were observed. As Shoun by the experimental result,a catalyst,which showed better activity and selectivity than others, was obstained under the following preparative conditions: calcining temperature 600?℃,pH value range 2.5～3.2,gelating time 5h and alumina content 10%～25%(m). Furthermore,adding cadmium oxide in a minor amount as a promotor also improved the catalytic performance. For the substitutive reaction,the reaction conditions were examined. As indicated,the optimal result of yield 89.2%,conversion 90.2%,selectivity 98.7% was accomplished with reaction temperature 420?℃,molar ratio 1∶8∶37(C 4H 4O∶NH 3∶H 2O), and the liquid hourly space velocity of furan 0.20?h -1.Using aluminium silicate-composing catalyst,pyrrole was prepared from furan and ammonia by intra-annular heteroatomic substitution reaction with presence of water vapor. As for the preparation of aluminium silicate-composing catalyst,the effect of various technical parameters and promotor action on the catalytic performance were observed. As Shoun by the experimental result,a catalyst,which showed better activity and selectivity than others, was obstained under the following preparative conditions: calcining temperature 600?℃,pH value range 2.5～3.2,gelating time 5h and alumina content 10%～25%(m). Furthermore,adding cadmium oxide in a minor amount as a promotor also improved the catalytic performance. For the substitutive reaction,the reaction conditions were examined. As indicated,the optimal result of yield 89.2%,conversion 90.2%,selectivity 98.7% was accomplished with reaction temperature 420?℃,molar ratio 1∶8∶37(C 4H 4O∶NH 3∶H 2O), and the liquid hourly space velocity of furan 0.20?h -1.

关 键 词：水蒸气 氨 吡咯 呋喃 催化剂 硅酸铝 

分 类 号：TQ251.3[化学工程—有机化工] O626.13[理学—有机化学]