低碳化学与化工2025，Vol.50Issue(12)：59-65,7.DOI:10.12434/j.issn.2097-2547.20250020
氧化铝复合ZSM-5催化剂的制备及其环己烯水合制环己醇反应性能
Preparation of alumina composite ZSM-5 catalysts and their performances in hydration of cyclohexene to cyclohexanol
摘要
Abstract
Traditional methods for cyclohexanol production,such as phenol hydrogenation method and cyclohexane oxidation method,suffer from high energy consumptions and safety concerns.In contrast,the cyclohexene hydration method has attracted significant attention due to its high cyclohexanol selectivity and low hydrogen consumption.However,existing catalysts(such as ZSM-5 zeolite)for cyclohexene hydration to cyclohexanol face challenges including structural framework instabilities and uneven acid distributions during acid content regulation.A series of catalysts were prepared by compositing ZSM-5 zeolite with dry gel powder(primarily pseudo-boehmite)via extrusion molding.The crystal and textural structures of catalysts were characterized by XRD and N2 physisorption-desorption,etc.,and their catalytic performances were evaluated in a fixed-bed reactor.The results show that under optimized conditions of temperature of 110 ℃,pressure of 0.1 MPa,N2 flow rate of 10 mL/min,space velocity of 0.33 h-1 and n(water)∶n(cyclohexene)of 6∶1 for 1 h,catalyst Z4-4∶1(m(ZSM-5)∶m(dry gel powder)of 4∶1)exhibits superior catalytic performance with cyclohexene conversion rate of 8.2%and cyclohexanol selectivity of 79.0%.The catalytic performance of catalyst can be improved by enhancing acid strength and increasing acid quantity within specific ranges.关键词
分子筛/环己烯/环己醇/酸量Key words
zeolites/cyclohexene/cyclohexanol/acid contents分类
化学化工引用本文复制引用
马子豪,侯朝鹏,吕帅帅,李红伟,高雨函,杨克勇,徐润,夏国富..氧化铝复合ZSM-5催化剂的制备及其环己烯水合制环己醇反应性能[J].低碳化学与化工,2025,50(12):59-65,7.基金项目
国家重点研发计划(2021YFA1501300). （2021YFA1501300）
