Hydrogen absorption studies in ZrMnFe0.7Co0.3

被引：8

作者：

Prakash, M ^{[1
]}

Ramaprabhu, S ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Magnetisme & Mat Magnet Lab, Madras 600036, Tamil Nadu, India

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2000年 / 25卷 / 09期

关键词：

ZrMnFe0.7Co0.3; P-C isotherms; kinetics of hydrogen absorption; thermodynamics of dissolved hydrogen;

D O I：

10.1016/S0360-3199(99)00109-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The hydrogen absorption, kinetics of hydrogen absorption and thermodynamics of dissolved hydrogen in C14 Laves phase alloy ZrMnFe0.7Co0.3 are studied in the ranges 1 less than or equal to P (bar) less than or equal to 30 and 303 less than or equal to T (K) less than or equal to 473. Substituting Co at Fe site in ZrMnFe leads to the contraction of the lattice and subsequently increases the plateau pressure with a reduction in hydrogen intake capacity. The relative partial molar enthalpy and entropy of dissolved hydrogen in ZrMnFe0.7Co0.3-H are found to be in the ranges -(6-11) kJ (mol H)(-1) and -(20-42) J K-1 (mol H)(-1) respectively. The presence of alpha, (alpha + beta) and beta phases as seen in the P-C isotherms, is further confirmed by thermodynamic studies and kinetics of hydrogen absorption. (C) 2000 International Association for Hydrogen Energy. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：871 / 878

页数：8

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