摘要
本文对三种金属配合物Co Lc、Ni Lc、Cu Lc催化下H2O2对羟丙基瓜胶的氧化降解效能进行了研究。结果表明,三种金属配合物催化下,H2O2对羟丙基瓜胶的氧化降解效能均有不同幅度的提高,且配合物Cu Lc体系的效果最优。并进一步对配合物Cu Lc体系的pH适用范围进行了筛选,结果表明：该体系适用于pH 5~9,当pH为5.0、温度为30℃、H2O2加量为羟丙基瓜胶质量分数的5.0%、配合物Cu Lc加量为H2O2物质的量的5.0%时,30 min内,该体系可将相对分子质量为2×106的羟丙基瓜胶降解至约为6 749,将其黏度从430 m Pa·s降低至78.58 m Pa·s。
This paper mainly studies the effectiveness of three kinds of metal complexes CoLc,NiLc,CuLc were used as catalysts in the oxidative degradation of hydroxyethyl guar gum by H2O〉The results showed that the effectiveness of oxidative degradation of hydrox- yethyl guar gum by H2O2 all has different amplitude increase when three kinds of metal complexes CoLc,NiLc,CuLc were added, in addition,the system of metal complex CuLc has a much better effect than others. With the further screening the pH applied range of complex CuLc system,the experiment results showed,this reaction system is effctive under pH 5-9. When the pH is 5.0,temperature is 30 ℃,the addition of H2O2 is 5.0 % of hydroxyethyl guar gum mass fraction, the addition of complex CuLc is 5.0 % of H2O2 molar,30 min,the system reduces the viscosity of hydroxyethyl guar gum decreased from 430 mPa＇s to 78.58 mPa＇s, and the molecular weight is decreased from 2×10^6 to 6 749.
出处
《石油化工应用》
CAS
2015年第11期92-95,99,共5页
Petrochemical Industry Application
基金
国家自然科学基金项目"环保型聚糖-木质素钻井液体系的应用基础研究"
项目编号:50874092
关键词
配合物
催化
氧化降解
过氧化氢
羟丙基瓜胶
complex
catalytic
oxidative degradation
hydrogen peroxide
hydroxyethyl guar gum
