Improvement of reaction kinetics by metal chloride on ammonia and lithium hydride system

被引：19

作者：

Miyaoka, Hiroki ^{[1
]}

Fujii, Hironobu ^{[2
,3
]}

Yamamoto, Hikaru ^{[4
]}

Hino, Satoshi ^{[2
]}

Nakanishi, Haruyuki ^{[5
]}

Ichikawa, Takayuki ^{[2
,4
]}

Kojima, Yoshitsugu ^{[2
,4
]}

机构：

[1] Hiroshima Univ, Inst Sustainable Sci & Dev, Higashihiroshima 7398530, Japan

[2] Hiroshima Univ, Inst Adv Mat Res, Higashihiroshima 7398530, Japan

[3] Hiroshima City Ind Promot Ctr, Hiroshima 7330834, Japan

[4] Hiroshima Univ, Grad Sch Adv Sci Matter, Higashihiroshima 7398530, Japan

[5] Toyota Motor Co Ltd, Higashi Fuji Tech Ctr, Shizuoka 4101193, Japan

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 21期

关键词：

Hydrogen; Hydrogen storage; Hydrogen production; Ammonia; Catalyst; Kinetics; HYDROGEN STORAGE-SYSTEM; FUEL-CELL APPLICATIONS; CHEMICAL HEAT-PUMP; N-H SYSTEM; THERMODYNAMIC PROPERTIES; COMPLEXES; DECOMPOSITION; ABSORPTION; CATALYSTS; MECHANISM;

D O I：

10.1016/j.ijhydene.2012.08.047

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：

Ammonia NH3 and lithium hydride LiH system releases hydrogen even at room temperature to form lithium amide LiNH2. LiNH2 is recycled back to NH3 and LiH below 300 degrees C under hydrogen H-2 flow condition. However, the reaction rate of the system is slow for a practical application. In this work, various kinds of transition metal chlorides were examined as a potential catalyst to improve the kinetics. For hydrogen desorption reaction, the reaction kinetics of titanium chloride TiCl3 dispersing LiH was about 8 times faster than the raw LiH, suggesting that TiCl3 possessed an excellent catalytic effect. In the case of the regeneration reaction, the reaction kinetics was also improved by the addition of TiCl3. It was mainly caused by physical effects in contrast to the hydrogen desorption process, in other words, the small crystallite and/or particle were formed by the milling with the additive. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：16025 / 16030

页数：6

共 24 条

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