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Reaction Pathways Determined by Mechanical Milling Process for Dehydrogenation/Hydrogenation of the LiNH 2 /MgH 2 System
Author(s) -
Liang Chu,
Liu Yongfeng,
Luo Kun,
Li Bo,
Gao Mingxia,
Pan Hongge,
Wang Qidong
Publication year - 2010
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200901967
Subject(s) - dehydrogenation , hydrogen storage , desorption , hydride , hydrogen , lithium amide , chemistry , amide , salt metathesis reaction , chemical engineering , metathesis , catalysis , inorganic chemistry , organic chemistry , adsorption , polymerization , polymer , engineering , enantioselective synthesis
Abstract The dehydrogenation/hydrogenation processes of the LiNH 2 /MgH 2 (1:1) system were systematically investigated with respect to balller milling and the subsequent heating process. The reaction pathways for hydrogen desorption/absorption of the LiNH 2 /MgH 2 (1:1) system were found to depend strongly on the milling duration due to the presence of two competing reactions in different stages (i.e., the reaction between Mg(NH 2 ) 2 and MgH 2 and that between Mg(NH 2 ) 2 and LiH), caused by a metathesis reaction between LiNH 2 and MgH 2 , which exhibits more the nature of solid–solid reactions. The study provides us with a new approach for the design of novel hydrogen storage systems and the improvement of hydrogen‐storage performance of the amide/hydride systems.