石油化工2016，Vol.45Issue(6)：677-684,8.DOI:10.3969/j.issn.1000-8144.2016.06.006
均匀设计法应用于NaZSM-5分子筛无机酸交换条件的优化
Optimization of inorganic acid exchange conditions of NaZSM-5 zeolite by uniform design
摘要
Abstract
NaZSM-5 zeolite was synthesized in an amine-free system by hydrothermal method, and HZSM-5 catalysts were prepared through the inorganic acid exchange of the NaZSM-5 zeolite with HCl and HNO3 separately. The effects of acid concentration,exchange time,exchange temperature and exchange liquid volume on the performances of the HZSM-5 catalysts in the hydration of cyclohexene to cyclohexanol were studied. The HZSM-5 catalysts were characterized by means of XRD,XRF,NH3-TPD,SEM and N2adsorption-desorption. The exchange conditions were optimized by means of uniform design. The results showed that the inorganic acid exchange method was simple,energy saving and high efficient compared with the traditional ammonium salt exchange method. Under the optimal HCl exchange conditions of HCl concentration of 1.2 mol/L,exchange temperature of 80℃,exchange time of 3 h and exchange liquid volume of 11 mL/g,the theoretical and actual yields of cyclohexanol were 9.29% and 8.71%,respectively. Under the optimal HNO3 exchange conditions of HNO3 concentration of 1.2 mol/L,exchange temperature of 63℃,exchange time of 3 h and exchange liquid volume of 11 mL/g,the theoretical and actual yields of cyclohexanol were 8.92% and 8.90%,respectively.关键词
无胺法/均匀设计法/无机酸交换/HZSM-5催化剂/环己烯水合/环己醇Key words
amine-free method/homogeneous design/inorganic acid exchange/HZSM-5 catalyst/hydration of cyclohexene/cyclohexanol分类
化学化工引用本文复制引用
李光河,叶晓雪,刘杨青,魏会娟,苏慧,王向宇..均匀设计法应用于NaZSM-5分子筛无机酸交换条件的优化[J].石油化工,2016,45(6):677-684,8.基金项目
河南省杰出人才创新基金项目（0221001200）。 （）
