用于苯与分子氧羟基化制苯酚的长链脂肪胺修饰的杂多酸催化剂  

Long Chain Aliphatic Amine-Modified Heteropolyacid Catalysts for Hydroxylation of Benzene to Phenol with Molecular Oxygen

作　　者：周长江[1] 葛汉青[1] 冷炎[1] 王军[1] 

机构地区：[1]南京工业大学化学化工学院材料化学工程国家重点实验室,江苏南京210009

出　　处：《催化学报》2010年第6期623-625,共3页

基　　金：国家自然科学基金(20476046;20776069);江苏省高校重大基础研究项目(06KJA53012);长江学者和创新团队发展计划(PCSIRT0732)

摘　　要：将十二胺或十八胺与磷钼钒杂多酸结合,制备了有机-无机杂化催化剂,并在高压釜中考察了它们在苯与分子氧羟基化制苯酚反应中的催化性能.结果表明,当十二胺与杂多酸的摩尔比为4:1时,所制备的杂化催化剂上苯酚产率为11.5%,大大高于纯杂多酸催化剂上的3.9%.结合长链脂肪胺与杂多酸之间的相互作用,以及杂多酸的"假液相"特性,初步讨论了长链脂肪胺的促进作用.Organic-inorganic hybrid catalysts were prepared by combining laurylamine（or octadecylamine） and molybdovanadophosphoric acid,and their catalytic performance for the hydroxylation of benzene to phenol was evaluated using molecular oxygen as the oxidant in a pressured batch reactor.The laurylamine-modified heteropolyacid catalyst with a 4：1 molar ratio for the two moieties exhibited a much higher yield of phenol（11.5%） than that of the neat heteropolyacid H5PMo10V2O40（3.9%）.We discuss the promotional effect of the long chain aliphatic amines with regards to the interaction between the amine and the heteropolyacid framework,and we also discuss the ＂pseudo-liquid phase＂ behavior of the heteropolyacid.

关 键 词：杂多酸 脂肪胺 有机-无机杂化催化剂 苯 羟基化 苯酚 

分 类 号：TQ243.12[化学工程—有机化工]