摘要
用球磨共混法制备了磷钨杂多酸负载于HY、Hβ和HZSM-5上的双组元催化剂,分别考察了磷钨杂多酸(HPWA)、HY、Hβ和HZSM-5单组元催化剂及其HPWA与分子筛负载的双组元催化剂对轻汽油与甲醇醚化的反应性能。在自生压力反应釜进行反应的实验结果表明,负载质量分数40%HPWA的HPWA/Hβ具有优良的反应性能。对40%HPWA/Hβ催化剂进行反应条件优化实验结果表明,该催化剂的最优反应条件为:剂油质量比1:12,反应温度90℃,醇油质量比1:3,甲醇含水量4%,反应时间2 h。在此条件下,烯烃转化率55.78%,醚化选择性64.00%,醚收率35.69%。
HY-, Hβ- and HZSM-5-supported phosphotungstic heteropolyacid (HPWA) catalysts were prepared by ball grinding-mixing method. Behaviors of the HPWA, HY, Hβ, HZSM-5, HPWA/HY, HPWA/Hβ and HPWA/HZSM-5 catalysts were investigated for etherification of light gasoline and metha- nol. Reaction results in an autogenous pressure kettle showed that HPWA/Hβ with 40% HPWA exhibi- ted satisfactory activity, with optimum reaction condition as follows: m (catalyst): m (gasoline) = 1: 12, reaction temperature 90 ℃, m (methanol) : m (gasoline) = 1 : 3, water content in methanol = 4%, reac- tion for 2 h. Olefins conversion of 55.78%, selectivity to ether of 64.00% and ether yield of 35.69% were obtained under the optimal condition.
出处
《工业催化》
CAS
2009年第10期35-39,共5页
Industrial Catalysis
基金
北京市自然科学基金与北京市教委联合资助项目(KZ200710017008)
关键词
石油化学工程
磷钨杂多酸
分子筛
甲醇
轻汽油醚化
petrochemical technology
phosphotungstic heteropolyacid
zeolite
methanol
light gasoline etherification