Thermal Decomposition of Anhydrous Alkali Metal Dodecaborates M2B12H12 (M = Li, Na, K)

被引：17
作者：
He, Liqing [1 ]
Li, Hai-Wen [2 ,3 ]
Akiba, Etsuo [1 ,2 ,3 ]
机构：
[1] Kyushu Univ, Dept Mech Engn, Fac Engn, Fukuoka 8190395, Japan
[2] Kyushu Univ, Int Res Ctr Hydrogen Energy, Fukuoka 8190395, Japan
[3] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2CNER, Fukuoka 8190395, Japan
来源：
ENERGIES | 2015年 / 8卷 / 11期
关键词：
thermal decomposition; dodecaborate; borohydride; hydrogen storage; hydrogen; HYDROGEN STORAGE REACTIONS; SOLVENT-FREE SYNTHESIS; DEHYDROGENATION REACTION; LI2B12H12; REVERSIBILITY; STABILITY; PATHWAY; BOROHYDRIDES; PREDICTION; DESORPTION;
D O I：
10.3390/en81112326
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Metal dodecaborates M2/nB12H12 are regarded as the dehydrogenation intermediates of metal borohydrides M(BH4)(n) that are expected to be high density hydrogen storage materials. In this work, thermal decomposition processes of anhydrous alkali metal dodecaborates M2B12H12 (M = Li, Na, K) synthesized by sintering of MBH4 (M = Li, Na, K) and B10H14 have been systematically investigated in order to understand its role in the dehydrogenation of M(BH4)(n). Thermal decomposition of M2B12H12 indicates multistep pathways accompanying the formation of H-deficient monomers M2B12H12-x containing the icosahedral B-12 skeletons and is followed by the formation of (M2B12Hz)(n) polymers. The decomposition behaviors are different with the in situ formed M2B12H12 during the dehydrogenation of metal borohydrides.
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页码：12429 / 12438
页数：10
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