关键词:

吡咯, 呋喃, 催化剂, 硅酸铝

Abstract: 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(C₄H₄O∶NH₃∶H₂O)， and the liquid hourly space velocity of furan 0.20 h^-1.

Key words:

吡咯, 呋喃, 催化剂, 硅酸铝