氟硅酸铵改性HY分子筛/凹凸棒土催化剂的制备及其脱烯烃杂质催化性能  

Ammonium Fluosilicate-Modified HY Zeolite/Attapulgite Catalyst Preparation and Performance for Removing Olefins

作　　者：黄伟[1] 纪飞[1] 姚超[1] 李为民[1] HUANG Wei;JI Fei;YAO Chao;LI Weimin(College of Petrochemical Engineering, Changzhou University ,Changzhou 213164, China)

机构地区：[1]常州大学石油化工学院,江苏常州213164

出　　处：《石油学报（石油加工）》2017年第6期1097-1103,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：江苏省科技支撑计划项目(BE2014103);江苏省盱眙县政府开放性课题项目(201504)基金资助

摘　　要：采用TIR、XRD、SEM、Hammett指示剂法等手段,对制备的氟硅酸铵((NH4)2SiF6)改性分子筛(HY)/凹凸棒土(ATP)催化剂进行表征,研究了氟硅酸铵改性HY/ATP催化剂脱除重整生成油中烯烃杂质的催化性能。研究表明,最佳氟硅酸铵改性条件为:氟硅酸铵溶液质量分数2.5%、改性温度70℃。该氟硅酸铵改性HY/ATP催化剂在微型间歇反应釜中进行脱烯烃实验,在反应温度170℃、反应压力1.5 MPa、催化剂占原料油5%(质量分数)时,重整生成油中烯烃杂质脱除率达到83.4%;该催化剂重复使用11次后,烯烃杂质脱除率仍达到53.1%。The ammonium fluosilicatemodified zeolite(HY)/attapulgite(ATP)composite catalyst was prepared and characterized by FTIR,XRD,SEM,and the Hammett indicator method.Its catalytic performance for the removal of trace amount of olefins was investigated.The optimized synthetic conditions were determined to be:the mass fraction of ammonium fluorosilicate being2.5%and the modification temperature being70℃.At the reaction temperature of170℃,the reaction pressure of1.5MPa,the catalyst loading of5%(mass fraction),the olefin removal rate could reach83.4%using the HY/ATP composite catalyst modified by(NH4)2SiF6.After the catalyst was recycled for eleven times,the olefin removal rate was as high as53.1%.

关 键 词：凹凸棒土 分子筛 氟硅酸铵改性 烯烃 

分 类 号：TQ64[化学工程—精细化工]