A two-stage hydrogen compressor based on (La,Ce,Nd,Pr) Ni5 intermetallics obtained by low energy mechanical alloying - Low temperature annealing treatment

被引：25

作者：

Talaganis, B. A. ^{[1
,2
]}

Esquivel, M. R. ^{[1
,2
,3
,4
]}

Meyer, G. ^{[1
,2
,3
]}

机构：

[1] Ctr Atom Bariloche, Inst Balseiro, UNCu, San Carlos De Bariloche, Argentina

[2] Ctr Atom Bariloche, Inst Balseiro, CNEA, San Carlos De Bariloche, Argentina

[3] Comis Nacl Energia Atom, Ctr Atom Bariloche, San Carlos De Bariloche, Argentina

[4] Univ Bariloche, Ctr Reg, UNCo, San Carlos De Bariloche, Argentina

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 04期

关键词：

AB(5); (La; Ce)Ni-5; Mechanical alloying; Hydrogen compression; SYSTEM; LANI5-XALX; PR; LA; MM; ND;

D O I：

10.1016/j.ijhydene.2008.11.052

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：

La0.67Ce0.19Nd0.08Pr0.06Ni5 was synthesized by low energy mechanical alloying. The AB(5) was milled up to completion stage to reach the final composition and appropriate particle size distribution and microstructure characteristics. Crystallite size, strain and sorption properties of as-milled samples were evaluated. After milling, La0.67Ce0.19Nd0.08Pr0.06Ni5 and previously obtained LaNi5 were annealed at 600 degrees C for 24h. An improvement in both microstructural and hydrogen sorption properties was found. Equilibrium hydrogen sorption properties were obtained and quantified in the 25-90 degrees C range. From these results, a two-stage hydrogen compressor was proposed. In the first stage, hydrogen is absorbed by LaNi5 at 575 kPa and 25 degrees C and desorbed at 1365 kPa and 90 degrees C. In the second stage, this fluid is absorbed by La0.67Ce0.19Nd0.08Pr0.06Ni5 at 745 kPa and 25 degrees C and desorbed at 2100 kPa and 90 degrees C. As a result, a global compression ratio of 3.65 is reached using this scheme. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：2062 / 2068

页数：7

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