化工学报2016，Vol.67Issue(11)：4643-4651,9.DOI:10.11949/j.issn.0438-1157.20160699
脱铝超稳Y沸石负载Cu催化纤维素醇解合成乙酰丙酸乙酯
Preparation of ethyl levulinate from cellulose catalyzed by dealuminated USY molecular sieves supporting copper
摘要
Abstract
A dealuminated Y molecular sieves supporting copper (Cu-DUSY) catalyst was prepared by impregnation technique using Cu as metallic active ingredient and modified USY molecular sieves as carrier, which USY modification was dealuminated in non-buffered citric acid. Physicochemical characterization by XRD, FT-IR, BET, NH3-TPD, Py-IR and TG-DTA showed thatthe Cu-DUSY catalysthad excellent thermal stability and steady crystal structure.Cellulose alcoholysis catalyzed by Cu-DUSYyielded 48.2%(mol) of ethyl levulinate (EL) at 200℃ for 3 h. The recycled Cu-DUSYcatalyst remained high activity with EL yield above 40%(mol) after being used four times.关键词
分子筛/载体/催化/醇解/纤维素/乙酰丙酸乙酯Key words
molecular sieves/support/catalysis/alcoholysis/cellulose/ethyl levulinate分类
化学化工引用本文复制引用
安冉,孔鹏飞,徐桂转,常春,白净,方书起..脱铝超稳Y沸石负载Cu催化纤维素醇解合成乙酰丙酸乙酯[J].化工学报,2016,67(11):4643-4651,9.基金项目
国家自然科学基金项目（21176227）；河南省基础与前沿技术研究项目（162300410007）。@@@@Foundation item：supported by the National Natural Science Foundation of China(21176227) （21176227）
