双氧水氧化橡实淀粉的实验研究-《郑州大学学报(工学版)》

文章信息/Info

Title:: Experimental Study on the Oxidation of Acorn Starch by Hydrogen Peroxide

作者:: 赵文恩; 张晓阁; 胡水涛; 等.; 郑州大学,化工与能源学院,河南,郑州,450001, 郑州大学,化工与能源学院,河南,郑州,450001, 郑州大学,化工与能源学院,河南,郑州,450001, 郑州大学,化工与能源学院,河南,郑州,450001

Author(s):: ZHAO Wenen; ZHANG Xiaoge; HU Shuitao; etc; (School of Chemical and Energy Engineering，Zhengzhou University，Zhengzhou 450001，China

Keywords:: acorn starch; oxidation; carbonyl percentage; earboxyl percentage

摘要:: 以双氧水为氧化剂,Cu2+为催化剂制备橡实氧化淀粉,考察pH值、氧化剂用量、催化剂用量、反应温度及反应时间对橡实氧化淀粉的羰基和羧基质量分数的影响.结果表明,最佳反应条件为:反应温度45℃,反应时间3 h,pH=8,H2O2用量为20%(相对于淀粉干重质量,下同),在此条件下,当催化剂用量为0.052 4%(相对于淀粉干重的质量)时,制得羧基质量分数为0.914 0%的橡实氧化淀粉;在催化剂用量为0.124 4%时,制得羰基质量分数为0.918 3%的橡实氧化淀粉.

Abstract:: The oxidized acorn starch was prepared by using hydrogen peroxide as the oxidant agent and Cu(II)ions as the catalyst．The effects of pH，oxidant agent dosage，catalyst dosage，reaction temperature，andreaction time of the oxidation reaction were examined on the carboxyl percentage and the carbonyl percentageof the oxidized starch．The results showed that the oxidized acorn starch with 0．9140％carboxyl percentage U·sing 0．0524％of the catalyst dosage and with 0．9183％carboxyl percentage using 0．1244％of the catalystdosage，respectively，was obtained under such conditions of reaction as temperature being 45。C，time 3 h，pH=8，and 20％of hydrogen peroxide．