多元载体固载磷钨酸催化剂的研制及绿色合成己二酸  

Preparation of supported phosphotungstic acid catalyst with multi-carriers and using it to green synthesis of adipic acid

作　　者：周慧[1] 贺红举 何建英[1] 陈丹云[1] 

机构地区：[1]河南大学化学化工学院精细化学与工程研究所,河南开封475004 [2]河南化学工业技师学院,河南开封475002

出　　处：《食品工业科技》2011年第1期256-257,334,共3页Science and Technology of Food Industry

基　　金：河南省科技厅2009年科技发展计划项目(092102210171);河南省教育厅自然科学研究计划项目(2008A150002)

摘　　要：以质量比1∶9∶20的氯化镧、高岭土和SnCl4.5H2O制备了多元载体SnO2-La2O3-高岭土,将其于磷钨酸的乙醇溶液中浸渍12h,300℃焙烧3h,得多元载体固载磷钨酸催化剂PW12/SnO2-La2O3-高岭土,并采用IR和XRD测试技术表征了催化剂的物化性质。以30%H2O2为氧源,无需在反应体系中使用有机溶剂和相转移剂,用于催化氧化环己酮绿色合成了己二酸。结果表明,该方法有益于降低成本、简化分离工艺、减少污染和提高产品质量,催化剂还有一定的重复使用性。适宜反应条件为环己酮100mmol,催化剂1.5g,30%H2O245mL,回流反应6h,己二酸收率63.90%。Supported phosphotungstic acid catalyst with multi-carriers was prepared. Preparing conditions of the catalyst were：mass ratio of LaCl3 to SnCl4 ·5H2O to kaolin 1：9：20, impregnation time 12h in alcohol solution of phosphotungstic acid and calcination at 300℃ for 3h.The catalyst was characterized by IR and XRD.And it was used to catalyze the synthesis of adipic acid from cyclohexanone oxidized by 30% hydrogen peroxide without any organic solvent or phase transfer agents.It was helpful to cost reduction,to simplify separation process, to reduce pollution and to increase product quality. Optimal reaction conditions were cyclohexanone 100mmol, catalyst dosage 1.5g,30% H2O2 45mL,the yield of adipic acid could reach 63.9% when refluxing 6h.

关 键 词：多元载体固载磷钨酸 己二酸 催化氧化 绿色合成 

分 类 号：TS202.3[轻工技术与工程—食品科学]