磷钨酸改性短孔道HPW/Zr-SBA-15催化合成双酚F  

One-step Synthesis of Short-channel HPW/Zr-SBA-15 Catalyst for Synthesis of Bisphenol F

作　　者：陈梦旭 徐文婧 梁奇 李勇飞[1] Chen Mengxu;Xu Wenjing;Liang Qi;Li Yongfei(School of Chemical Engineering,Xiangtan University,Xiangtan 411105,China)

机构地区：[1]湘潭大学化工学院

出　　处：《广东化工》2019年第9期33-36,57,共5页Guangdong Chemical Industry

基　　金：湖南省自然科学基金项目(2018JJ2385);湘潭大学大学生创新性实验计划项目(2018)

摘　　要：采用一步法合成磷钨酸改性新型短介孔HPW/Zr-SBA-15分子筛催化剂,用XRD、IR、N2-吸附脱附、SEM、TEM和NH3-TPD进行表征分析,考察不同磷钨酸负载量、酚醛摩尔比、催化剂浓度、催化剂重复使用性对苯酚甲醛合成双酚F反应的影响,结果表明,所合成磷钨酸改性短孔道HPW/Zr-SBA-15介孔分子筛不仅保持了磷钨酸的keggin结构和介孔分子筛的结构特性,且相对于传统的SBA-15,其孔道长度大为缩短。在优化的反应条件下,双酚F收率可达98.3%,催化剂重复使用4次后仍达87.36%。A dispersed-uniform phosphotungstic acid modified short channel HPW/Zr-SBA-5 mesoporous molecular sieve was synthesized as catalyst using one-step method.The characteristics of the samples were investigated using XRD,FT-IR,N2 adsorption,SEM,TEM,and NH3-TPD,and different load phosphotungstic acid,reaction time,reaction temperature,phenol/formaldehyde mole ratio,catalyst concentration,recycle of catalyst were examined on the yield of bisphenol F and the three isomers’ distribution.The results showed that the synthesis of HPW/Zr-SBA-15 well kept the characteristics of the mesoporous molecular sieve with 200~400nm short channel length.Under the optimized reaction conditions,the 98.36% of bisphenol F yield was obtained.

关 键 词：一步合成法 磷钨酸改性 介孔分子筛 HPW/Zr-SBA-15 双酚F 

分 类 号：TH3[机械工程—机械制造及自动化]