HY分子筛酸密度对催化异丁烷-丁烯烷基化反应性能的影响  

Effects of Acid Density on the Catalytic Performance of HY Zeolite in the Isobutene-Butene Alkylation Reaction

作　　者：侯雅聪 张成喜 李永祥[1] HOU Yacong;ZHANG Chengxi;LI Yongxiang(State Key Laboratory of Catalytic Material and Reaction Engineering,Research Institute of Petroleum Processing,SINOPEC,Beijing 100083,China)

机构地区：[1]中国石化石油化工科学研究院石油化工催化材料与反应工程国家重点实验室

出　　处：《石油学报（石油加工）》2019年第4期744-750,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点研发计划项目(2017YFB0306502);中国石油化工股份有限公司项目(117020-1,117020-2)基金资助

摘　　要：通过对Y分子筛进行铵交换,获得了分子筛孔道相似、酸密度在2.87~12.99mmol/g范围内的一系列分子筛。在控制变量的前提下,考察了这一系列分子筛在异丁烷-丁烯烷基化反应中的催化性能,研究了分子筛酸密度对其催化烷基化反应活性的影响规律。结果表明,分子筛总酸密度越大,其相对氢转移活性越高,催化烷基化反应单程寿命越长,越有利于烷基化目标产物的生成。A series of Y zeolites with similar pore structures and different acid densities in the range of 2.87 to 12.99 mmol/g were prepared by exchanging Na + ion with ammonium salts.The effect of acid density on their catalytic performance was studied.The results show that high hydride activity and long single-pass catalyst life are due to the high acid density,which is beneficial for high selectivity of target products.

关 键 词：异丁烷 丁烯 烷基化 分子筛 总酸密度 

分 类 号：O643.32[理学—物理化学]