天津科技大学学报2012，Vol.27Issue(3)：25-28,4.
DSC法测定甜菊糖RA40-甲醇溶液的常压比热
Specific Heat at Constant Pressure of Aqueous Mixtures of Steviosides RA40 with Methanol Measured with DSC
摘要
Abstract
The specific heat of the aqueous mixtures of steviosides RA40 with methanol was measured with a differential scanning calorimeter (DSC) at temperatures from 288.15 K. to 328.15 K over different concentrations. The correlated equation which explained the connection between the specific heat and the concentration and temperature of RA40 in methanol was obtained with a nonlinearity least-squares regression method. The calculated values have been compared with experimental data. The percentage deviations are all lower than 1.5%. The proposed equation can be used for the crystallization in the solution to purify RA and the calculation of heat balance of relative system as well.关键词
差热分析/比热/二元体系/甜菊糖RA40-甲醇溶液Key words
DSC/ specific heat/ binary mixture/ aqueous mixtures of steviosides RA40 with methanol分类
轻工纺织引用本文复制引用
穆莹,王学魁,王彦飞,沙作良..DSC法测定甜菊糖RA40-甲醇溶液的常压比热[J].天津科技大学学报,2012,27(3):25-28,4.基金项目
天津科技大学引进人才科研基金资助项目(20080416) （20080416）
天津市海洋资源与化学重点实验室项目(200902) （200902）
