催化氧化制备氧化淀粉  

Preparation of Oxidized Starch by Cu(II) Catalysis Oxidation

作　　者：陈彦逍[1] 胡爱琳[1] 王公应[1] 

机构地区：[1]中国科学院成都有机化学研究所

出　　处：《中国粮油学报》2005年第4期25-28,共4页Journal of the Chinese Cereals and Oils Association

摘　　要：研究了以Cu2+为催化剂、双氧水为氧化剂,玉米淀粉经氧化处理后羧基含量和粘度的变化,考察了催化剂用量、反应时间、反应温度和反应pH值对结果的影响。实验结果表明:选用Cu2+作催化剂,最适合反应条件为催化剂用量0.02%(淀粉干重)、反应温度45℃、反应时间4.0h、反应pH7.0。在此催化条件下,双氧水用量20mL,可制得羧基含量为1.21%的氧化淀粉。The carboxyl content and the viscosity properties of cornstarch oxidized by hydrogen peroxide over Cu （Ⅱ） ions catalyst were studied ; and the effects of catalyst, reaction temperature, reaction time, and pH of oxidation reaction were examined. The results reveals the following optimum catalysis conditions for preparing the oxidized starch： catalyst Cu（Ⅱ） dosage 0.02% （ g/g）, reaction temperature 45℃, time 4. Oh, and pH 7.0. At these optimum catalysis conditions, when oxidant addition for the oxidation reaction is 20mL, the carboxyl content of the produced oxidized starch reaches 1.21% （g/g）.

关 键 词：Cu^2+催化剂 氧化 氧化淀粉 羧基含量 粘度 催化氧化 催化剂用量 CU^2+ 制备 反应时间 

分 类 号：TQ432.2[化学工程] O643.36[理学—物理化学]