脱氢枞胺磷钨酸盐催化1-辛烯的氧化反应研究  

Study on Catalytic Oxidation of 1-Octene with Hydrogen Peroxide by Dehydroabietyl Ammonium Phosphotungstate

作　　者：颜芳[1] 王小淑[1] 黄道战[1] 朱守记[1] 蓝虹云[1] 

机构地区：[1]广西民族大学化学化工学院广西林产化学与工程重点实验室,广西南宁530008

出　　处：《化学与生物工程》2013年第3期46-49,共4页Chemistry & Bioengineering

基　　金：广西自然科学基金资助项目(2011GXNSFA018057);广西教育厅科研项目(201010LX083);广西民族大学引进人才科研启动项目(2010QD020)

摘　　要：以脱氢枞胺(DHA)与Keggin型磷钨酸(HPW)反应制备脱氢枞胺磷钨酸盐(DHPW),运用红外光谱、紫外光谱对其结构进行表征,并以催化H2O2氧化1-辛烯为探针反应,考察脱氢枞胺磷钨酸盐的催化性能。结果表明,脱氢枞胺磷钨酸盐具有氧化-酸双功能催化作用,能催化H2O2氧化1-辛烯生成1,2-环氧辛烷、1,2-二羟基辛烷和2-羟基辛烷;在无溶剂或极性溶剂中,1,2-环氧辛烷易发生环氧开环水解反应,选择性较低;在非极性溶剂中,1,2-环氧辛烷的选择性较高,在1,2-二氯乙烷用量为5mL、1-辛烯用量为5mmol、催化剂用量为0.075g、H2O2用量为5.0mmol、反应温度为30℃、反应时间为3h的条件下,1,2-环氧辛烷的选择性最高,达到90.0%。Dehydroabietyl ammonium phosphotungstate （DHPW） synthesized from dehydroabietyl amine （DHA） and Keggin-type phosphotungstic acid （HPW） has been structurally characterized by IR and UV spec-troscopy,and then its catalytic performance on oxidation of 1-octene is investigated with aqueous 30% hydrogen peroxide under different conditions. The results show that DHPW has an oxidative-acidic bifunctional catalysis for the conversion of 1-octene in the presence of hydrogen peroxide to 1,2-epoxy octane,i, 2-dihydroxy octane and 2-hydroxy-octane,the selectivity of 1,2-epoxy octane in non-polar solvents is relatively high and decreases in free-solvents or polar solvents because 1,2-epoxy octane can he decomposed hy the ring-opening of epoxide. Under the reaction conditions as follows： 1,2-dichloroethane amount is 5 mL, DHPW dosage is 0. 075 g, 1-oc-tene amount is 5 mmol,hydrogen peroxide amount is 5.0 mmol,the reaction temperature is 30 ℃ ,the reaction time is 3 h,the selectivity of 1,2-epoxy octane reaches the maximum value of 90.0%.

关 键 词：脱氢枞胺磷钨酸盐 1-辛烯 过氧化氢 催化氧化 

分 类 号：TQ203.5[化学工程—有机化工]