Keggin结构多酸基纳米复合材料的合成与催化  

Synthesis and Catalytic Performance of Keggin-based Polyoxometalate Nanocomposites

作　　者：姜春杰[1] 于淼[1] 于跃[2] 温志忱 徐国华[2] 陈立东[1] 李萃[1] 

机构地区：[1]辽宁师范大学化学化工学院,辽宁大连116029 [2]中国石油吉林石化公司合成树脂厂,吉林吉林132021

出　　处：《徐州工程学院学报（自然科学版）》2016年第3期12-16,共5页Journal of Xuzhou Institute of Technology(Natural Sciences Edition)

基　　金：国家自然科学基金项目(20873056)

摘　　要：采用浸渍法合成了Keggin结构氧化物固载型H3PMo12O40-ZnO固体纳米催化剂.运用FT-IR、Raman、XRD和TG-DTA测试手段对其结构进行了系统的表征.结果表明,纳米复合催化材料中的Keggin型阴离子仍然保留完整的骨架结构,与ZnO2载体之间存在着较强的化学作用.以苯并噻吩和二苯并噻吩为模型燃油,考察了该固载型催化剂对氧化脱硫反应的催化性能,确定反应的最佳时间为3h,脱硫温度为60℃,最高脱硫率可达98.88%.A series of Keggin structure H3PMo12O40-ZnO composites with different H3PW12O40 loading were prepared by an immersion method.The structures and compositions of the nanomaterials were characterized by FT-IR,Raman,XRD,and TG-DTA.The results showed that the PMo12 clusters were chemically attached to the ZnO supports,and the primary Keggin structure remained intact in the as-synthesized composites.The catalytic activity of the H3PMo12O40-ZnO composites was evaluated by the oxidative desulfurization of a model fuel of the dibenzothiophene（DBT）or benzothiophene（BT）.The novel catalyst showed excellent stability during a test run with 3htime,60℃reaction temperature,and 98.88% Maximum desulfurization rate.

关 键 词：浸渍法 H3PMo12O40-ZnO 氧化催化 脱硫 

分 类 号：O643.36[理学—物理化学]