用HF/USY 催化剂催化合成十四烷基苯

采用负载氢氟酸的USY 分子筛作为催化剂, 以苯和十四碳烯为原料, 经烷基化反应合成十四烷基苯。在微型液相固定床反应器上考察了反应温度、焙烧温度、空速、催化剂组成等反应条件对催化剂性能的影响并考察了催化剂的稳定性。研究结果表明, 氟的负载质量分数为6 .0 %, 焙烧温度为300 ℃, 反应温度140 ℃, 空速为3.0h^-1 , 苯烯摩尔比为10∶1 的条件下, 十四碳烯的转化率为98 .54%, 2 -LAB(2 -烷基苯)的选择性为52.68%。HF/USY 催化剂具有较好的催化活性和稳定性。

Catalytic Synthesis of Tetradecylbenzene With Supported HF/ USY Catalyst

Tetradecylbenzene was prepared by the alkylation of benzene with tetradecene over supported hydrofluoric acid on USY.CM(53*3]The catalytic performances of the catalysts were investigated by alkylation reaction of benzene and tetradecene in a liquid fixed micro-reactor.The influences of reaction temperature,calcination temperature,space velocity and the composition of the catalysts on the catalytic performances were studied.Then the catalyst stability performance was also studied.The results show that the conversion of tetradecene is 98.54% and selectivity of 2-tetradecylbenzene is 52.68% under the conditions of 6.0% mass fraction of fluorine,300 ℃ calcinations temperature,140 ℃ reaction temperature,3.0 h~(-1) space velocity(WHSV),and 10∶1 of mole ratio of benzene and tetradecene.HF/USY catalysts have highly activity and stability.