USY分子筛催化噻吩十二烯烷基化工艺条件的考察

Processing Conditions of Alkylation of Thiophene with Laurylene over USY Zeolite

以模拟汽油为原料,用小型间歇式反应器,对4种Y型分子筛催化噻吩—烯烃的烷基化反应性能进行评价。实验结果表明:分子筛USY1烷基化的活性和控制烯烃聚合明显优于其他3种催化剂。USY1分子筛催化噻吩—烯烃烷基化的最佳反应条件是:反应温度为140℃、反应时间为2h、剂油质量比为1∶10。在最佳反应条件下,噻吩转化率为88.17%,且重复使用4次催化剂仍具有较高的催化活性。

Catalytic alkylation of thiophene with laurylene by four kinds of Y zeolite catalyst was evaluated with gasoline as raw material in a small batch reactor.The experimental results show that USY1 molecular sieve shows highest alkylation activity and better selectivity than the other three catalysts.The optimum conditions of catalytic alkylation by USY1 molecular sieve was as follows：the reaction temperature 140 ℃,reaction time 2 h,catalyst to oil ratio 1∶10.Under above conditions, thiophene conversion rate could reach 88.17%,and high activity could be kept after recycling the catalyst 4 times.