大孔聚苯乙烯树脂改性及对MgCl2负载研究-《郑州大学学报(工学版)》

文章信息/Info

Title:: Studyon the Modification and LoadingMagnesium ChlorideofMacroporous PolystyreneDiVinylbenzene Cross-linked Resi

Author(s):: ZHANGYa-dong; LI Guang—li; School of Chemical and Energy Engineering，Zhengzhou University，Zhengzhou450001，China

Keywords:: Polystyrene divinylbenzene cross-linked resin; ligand; magnesium chloride; salicylaldehyde

摘要:: 以氯甲基化的聚苯乙烯-二乙烯苯交联树脂(氯球;PS)作为载体基本骨架,首先分别以聚乙二醇、乙醇胺、二乙醇胺及三乙醇胺为配体对其改性,然后进行氯化镁的负载,并依次对其结构进行IR表征分析.结果表明:各配体均实现了对PS的配位改性,改性后的树脂对目的物——氯化镁能实现较好负载;从其接枝量上考虑,PEG200对氯球的改性优于PEG300、PEG600等,对氯化镁的负栽量高达到3.051mmol·g-1;对于醇胺类配体,三乙醇胺改性效果优于乙醇胺和二乙醇胺,但经二乙醇胺改性后,对目的物的负载效果较好,负载量高达4

Abstract:: hisstudy used the chloro-methylated polystyrene-divinylbenzenecross—linked resin(ehloromethylatedbead；PS)as the basic skeleton of carrier．Firstly，polyethylene glycol，alcohol amine，diethanolamine andtriethanolamine wereused as ligands in the modification．And then，magnesium chloridewasloadedto the modified ones．Finally，the structure of IRwere analysed separately．The results indicated that the coordina— tion modification of PS of the ligandswere all realized，and the modified PShada good ability of loading the obiect—magnesium chloride．Consideringthe quantity ofgrafting，the effect ofmodification ofPEG200 is better than PEG300 and 600 etc，the capacity of loading is 3．051 mmol·g～；as for the alcamines，the effect of modification of triethanolamine is better than ethanolamine and diethanolamine．butaftermodifying by dietha．nolamine，the PS has a better ability to load the object，and the capacity of loading is 4．195 mmol·g～．The catalysts prepared were used in one·step synthesis of salicylaldehydeexperiment．Afterreusing for5 times，the activity wasstill excellent．