乙醇-水二元体系中水在玉米粉上吸附平衡测定

摘要通过吸附-脱附试验,获得了乙醇-水二元混合气体中水在玉米粉上的吸附等温线。在乙醇-水二元体系中,由于两组分竞争吸附的存在,水在玉米粉上的平衡吸附量小于纯水-惰性气体下的水的平衡吸附量;二元体系中乙醇与水的吸附总量对温度更加敏感。乙醇的存在对于水的吸附曲线形状没有显著的改变,仍然可以用Sircar、GAB以及吸附势的大孔/无孔模型进行较好的拟合。

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	周三
	袁希钢
	曾爱武

关键词：乙醇-水混合物玉米粉吸附等温线

Abstract： By adsorption-desorption experiments,adsorption isotherms of water on corn meal in the presence of ethanol-water vapor mixture were obtained.Because of the interaction between the two components,the equilibrium adsorbing quantity of water for the binary components system was less than that of water with nitrogen carrier gas;the total absorbing quantity of water and ethanol was more sensitive to temperature.The isotherms of water didn't change its shape observably in the presence of ethanol and could be well expressed with Sircar model,GAB model and the potential theory for macro-porous/non-porous media.

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Received 2009-03-15; published 2009-03-15

引用本文:

周三;袁希钢;曾爱武;.乙醇-水二元体系中水在玉米粉上吸附平衡测定[J]. 化学工业与工程, 2009,26(2): 109-113

ZHOU San,YUAN Xi-gang,ZENG Ai-wu.Adsorption Isotherms of Water on Corn Meal in Ethanol-Water Binary System[J]. Chemcial Industry and Engineering, 2009,26(2): 109-113

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