化工进展

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甜菜粕液化降解制备多元醇的工艺条件

闫晓霖,王克冰   

  1. 内蒙古农业大学理学院,内蒙古 呼和浩特 010018
  • 出版日期:2011-07-05 发布日期:2011-07-05

Processing conditions for preparation of polyol from beet pulp liquefied degradation

YAN Xiaolin,WANG Kebing   

  1. College of Science,Inner Mongolia Agriculture University,Huhohot 010018,Inner Mongolia,China
  • Online:2011-07-05 Published:2011-07-05

摘要:

以甜菜粕为原料,在固体磷钨酸为催化剂、聚乙二醇400和丙三醇为复合液化剂的反应体系中,研究了甜菜粕液化降解制备植物基多元醇的方法。结果表明,甜菜粕具有很好的液化效果,在复合液化剂中聚乙二醇400与丙三醇质量比为41、液化温度为160 、催化剂用量为4%、液固比为121、液化时间为160 min时,最高液化率可达99.0%,液化产物的羟值为4586 mg/g,酸值为0.610.75 mg/g,为低羟值植物基多元醇

Abstract:

The catalyzed liquefied degradation of beet pulpBPin the system of solid phosphotungstic acid as catalyst and polyethyleneglycol 400PEG 400/ glycerolGLYas complex liquefier was studiedand the effect of processing conditions of BP liquefaction such as liquefaction temperaturecatalyst amountliquid-to-solid ratioliquefaction time on the liquefaction reaction and properties of liquefaction product were investigated. The results showed that BP had good liquefaction effectthe optimum liquefaction processing conditions were determined as followsPEG 400/glycerol mass ratio 41liquefaction temperature 160 catalyst amount 4%liquid-to-solid mass ratio 121 and liquefaction time 160minthe liquefaction rate would reach 99.0%. Hydroxyl value and acid value of liquefaction mixtures were 4586 mg/g and 0.610.75 mg/g respectivelywhich was a low hydroxyl value plant-based polyol.

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