Effects of initial pressure on the decomposition of LiBH4 and MgH2 mixture

被引：5

作者：

Sridechprasat, Pattaraporn ^{[1
]}

Siangsai, Atsadawuth ^{[1
]}

Kitiyanan, Boonyarach ^{[1
,2
]}

Kulprathipanja, Santi ^{[3
]}

Rangsunvigit, Pramoch ^{[1
,2
]}

机构：

[1] Chulalongkorn Univ, Petr & Petrochem Coll, Bangkok 10330, Thailand

[2] Chulalongkorn Univ, Ctr Excellence Petrochem & Mat Technol, Bangkok 10330, Thailand

[3] UOP, Des Plaines, IL 60017 USA

来源：

CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY | 2015年 / 17卷 / 05期

关键词：

LiBH4; MgH2; Hydrogen; Argon; Storage; HYDROGEN STORAGE PROPERTIES; 2LIBH(4)-MGH2; COMPOSITES; MECHANISM; MGB2;

D O I：

10.1007/s10098-015-0984-z

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Hydrogen desorption/absorption of the LiBH4/MgH2 mixture milled for 5 h was investigated with different initial pressures. The results showed that the initial pressure played an important role in the reversibility of the LiBH4/MgH2 mixture. The stability of the hydrogen capacity in the subsequent desorption was improved with a higher initial pressure. A possible reason was from the increase in the formation of MgB2 and the lower degree in the decomposition of both LiBH4 to the amorphous phases of Li2B12H12 and B; and MgH2 to Mg, during the hydrogen desorption. However, the higher initial pressure increased the hydrogen desorption temperature. The desorption temperature was increased from 310 A degrees C for the sample decomposing under 0.1 MPa hydrogen pressure to 360 A degrees C for other cases. This may be due to the higher energy required to overcome the suppression of MgH2 and LiBH4 decomposition.

引用

页码：1239 / 1246

页数：8