高校化学工程学报2017，Vol.31Issue(1)：83-89,7.DOI:10.3969/j.issn.1003-9015.2016.00.047
PEG基氮氧自由基嵌段共聚物的制备及其对伯醇的催化氧化性能
Preparation of Poly(ethylene glycol)-Based Nitroxyls Block Copolymers and their Selective Catalytic Oxidation Performance on Primary Alcohols
摘要
Abstract
Block copolymer PEG-PTMPM was synthesized via activator regenerated by electron-transfer atom-transfer radical polymerization (ARGET ATRP) with brominated polyethylene glycol (PEG) as a macromolecular initiator and 2,2,6,6-tetramethylpiperidin-1-oxyl-4-yl methacrylate (TMPM) as a monomer. It was then reacted withm-chloroperbenzoic acid to prepare nitroxyl block copolymer of PEG-PTMA. The prepared block copolymers included diblock copolymer of MPEG-PTMA and triblock copolymer of PTMA-PEG-PTMA. Effects of copolymer structure on selective catalytic oxidation of primary alcohols in a biphasic water-oil NaClO oxidation system were studied. The results show that molecular weight of PEG and PTMA segments and the block copolymer type can affect catalytic performance. The activity of block copolymer with PEG2000 as the supporting segment is better than that of non-supported TEMPO, and the benzyl alcohol conversion rate can reach to 100%. Other primary alcohol conversions are also over 95%. Furthermore, these nitroxyl block copolymers have excellent recyclability and the activity is not significantly decreased after 5 cycles.关键词
嵌段共聚物/氮氧自由基/NaClO/选择性催化氧化Key words
block copolymer/nitroxyl radical/NaClO oxidation system/selective catalytic oxidation分类
化学化工引用本文复制引用
刘少杰,王华丽,崔笑菲,杜慧丽,邢玉彬..PEG基氮氧自由基嵌段共聚物的制备及其对伯醇的催化氧化性能[J].高校化学工程学报,2017,31(1):83-89,7.基金项目
国家自然科学基金(21304030). （21304030）
