Hydration enthalpies of synthetic Na-A, cation-exchanged-A and some natural zeolites for evaluating as heat exchange absorbents

被引：26

作者：

Mizota, T

Matsui, K

Kasai, T

Nakayama, N

机构：

[1] Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Ube

来源：

THERMOCHIMICA ACTA | 1995年 / 266卷

关键词：

enthalpy; heat exchange; hydration; zeolite;

D O I：

10.1016/0040-6031(95)02442-5

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Hydration enthalpies of synthetic A-type and some natural zeolites have been measured by an adiabatic gas-absorption calorimeter to evaluate zeolite as a heat exchange absorbent for a solar-powered system. The Mg-exchanged A-zeolite is a suitable absorbent, if it is dehydrated at 100 degrees C. The total hydration heat is the highest (531 kJ kg(-1)) of the A-type zeolites treated in the present work and is twice that of natural mordenite or clinoptilolite. An empirical equation is proposed to simulate the relation between differential enthalpies and hydration amounts.

引用

页码：331 / 341

页数：11

共 9 条

[1] ZEOLITIC CARBON DIOXIDE - ENERGETICS AND EQUILIBRIA IN RELATION TO EXCHANGEABLE CATIONS IN FAUJASITE [J].

BARRER, RM ;

GIBBONS, RM .

TRANSACTIONS OF THE FARADAY SOCIETY, 1965, 61 (509P) :948-&

[2]

BARRER RM, 1970, ADV CHEM SER, V102, P105

[3]

CAREY JW, 1992, AM MINERAL, V77, P930

[4] ADSORPTION IN MICROPORES [J].

DUBININ, MM .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1967, 23 (04) :487-&

[5]

KASAI T, 1994, P MMIJ AUS IMM JOINT, P251

[6]

KASAI T, 1994, MINERAL J, V17, P170

[7]

Tchernev DI, 1978, SOLAR ENERGY APPL A, V79, P479

[8]

TCHERNEV DI, 1980, 5TH P INT C ZEOL, P788

[9] ISOSTERIC HEATS OF ADSORPTION OF XENON IN SILVER-EXCHANGED Y-ZEOLITES [J].

WATERMANN, J ;

BODDENBERG, B .

ZEOLITES, 1993, 13 (06) :427-429

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