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Potassium‐Modified Mg(NH 2 ) 2 /2 LiH System for Hydrogen Storage
Author(s) -
Wang Jianhui,
Liu Tao,
Wu Guotao,
Li Wen,
Liu Yongfeng,
Araújo C. Moysés,
Scheicher Ralph H.,
Blomqvist Andreas,
Ahuja Rajeev,
Xiong Zhitao,
Yang Ping,
Gao Mingxia,
Pan Hongge,
Chen Ping
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200805264
Subject(s) - lithium amide , potassium , hydrogen storage , desorption , chemistry , hydrogen , kinetics , inorganic chemistry , imide , amide , polymer chemistry , organic chemistry , catalysis , adsorption , physics , quantum mechanics , enantioselective synthesis
Using KH as an additive to Mg(NH 2 ) 2 /LiH drastically improves hydrogen desorption, which begins at ca. 80 °C (see graph). Circa 5 wt % of hydrogen can be reversibly desorbed and absorbed at about 107 °C. The presence of potassium in the reacting system weakens the amide NH and imide LiN bonds, leading to enhanced reaction kinetics.