甲酸-盐酸混合溶液水解麦草制备木糖的工艺研究

Process Technology for the production of Xylose via Hydrolysis of Straw in a mixture of Formic acid and Hydrochloric Acid

摘要:

本文对甲酸-盐酸混合溶液水解麦草制备木糖的工艺进行研究。实验发现含10% HCl的饱和甲酸溶液在65 ℃水解麦草0.5 h后，麦草木糖的水解得率达到23.62%。水解液经D311阴离子交换树脂脱酸脱色、活性炭脱色、真空结晶等一系列工艺后，结晶木糖产率为干燥麦草质量的15.87%，工艺可行。

Abstract:

The production of xylose via hydrolysis of straw in a mixture of formic acid and hydrochloric acid was investigated. Results showed that the yield of straw xylose reached 23.62% with saturated formic acid containing 10% HCl, reaction time of 0.5 h and temperature of 65 ℃. The hydrolysate was purified with D311 and activated carbon for decoloration and then crystallized, giving the pure xylose with the yield of 15.87%. Results indicated that this technology was available.