木糖结晶的热力学特性研究  

Study on Thermodynamic Properties of Xylose Crystallization

作　　者：王荣杰[1] 白兰莉[1] 

机构地区：[1]石河子大学化学化工学院新疆兵团化工绿色过程重点实验室,新疆石河子832003

出　　处：《安徽农业科学》2012年第11期6493-6494,共2页Journal of Anhui Agricultural Sciences

摘　　要：[目的]研究木糖结晶的溶解度及介稳区。[方法]采用激光法试验考察了木糖在纯水、乙醇-水溶液中的溶解度以及木糖在水中的超溶解度,确定木糖水溶液的结晶介稳区。[结果]木糖在纯水和不同体积配比的乙醇-水溶液中的溶解度随着溶液体系温度降低而明显减小,结晶介稳区的宽度在低温范围内比高温阶段要宽。[结论]为利用农产品废弃物木糖结晶的生产操作提供了理论依据。[Objective] The aim was to study the solubility and metastable area of xylose crystallization.[Method] Using laser monitor method,the solubility of xylose in pure water and ethanol-water mixed solvents,as well as the supersolubility of xylose in water were measured,and the crystallizing metastable area of xylose in aqueous solution was determined.[Result] It was found that the solubility of xylose in pure water,ethanol-water mixed solvents all decreased with the decrease of temperature;its solubility in ethanol-water mixed solvents decreased when ethanol content was increased.The crystallizing metastable area at low temperatures was larger than at high temperatures.[Conclusion] The results provide theoretical basis for the industrial process operation of xylose crystallization.

关 键 词：木糖 结晶 溶解度 介稳区 

分 类 号：S183[农业科学—农业基础科学]