TY - JOUR
T1 - Synthesis and decomposition reactions of metal amides in metal-N-H hydrogen storage system
AU - Leng, H. Y.
AU - Ichikawa, T.
AU - Hino, S.
AU - Hanada, N.
AU - Isobe, S.
AU - Fujii, H.
N1 - Funding Information:
This work was supported by the Grant-in-Aid of Japan Society for the Promotion of Science, by the project “Development for Safe Utilization and Infrastructure of Hydrogen Industrial Technology” of the New Energy and Industrial Technology Development Organization (NEDO), and by COE Research program (No. 13CE2002) of the Ministry of Education, Culture, Sports, Sciences and Technology of Japan. The authors gratefully acknowledge Miss E. Gomibuchi, Mr. K. Nabeta, Mr. K. Kimura, and Mr. T. Nakagawa for their help in our laboratory.
PY - 2006/6/1
Y1 - 2006/6/1
N2 - The synthesis and decomposition properties of some metal amides M(NH2)x such as LiNH2, NaNH2, Mg(NH2)2 and Ca(NH2)2 were investigated, which play important roles for designing a new family of metal-N-H hydrogen storage systems. Both the gas chromatographic examination and X-ray diffraction measurement indicated that the reaction between alkali or alkaline earth metal hydride MHx (such as LiH, NaH, MgH2 and CaH2) and gaseous NH3 could quickly proceed at room temperature by ball milling and the corresponding metal amides were easily synthesized in high quality. The kinetics of these kind of reactions is faster in the order of NaH > LiH > CaH2 > MgH2, which is consistent with the inverse order of electronegativity of those metals, i.e. Na < Li = Ca < Mg. The thermal decomposition properties indicated that both Mg(NH2)2 and Ca(NH2)2 decomposed and emitted NH3 at lower temperature than LiNH2.
AB - The synthesis and decomposition properties of some metal amides M(NH2)x such as LiNH2, NaNH2, Mg(NH2)2 and Ca(NH2)2 were investigated, which play important roles for designing a new family of metal-N-H hydrogen storage systems. Both the gas chromatographic examination and X-ray diffraction measurement indicated that the reaction between alkali or alkaline earth metal hydride MHx (such as LiH, NaH, MgH2 and CaH2) and gaseous NH3 could quickly proceed at room temperature by ball milling and the corresponding metal amides were easily synthesized in high quality. The kinetics of these kind of reactions is faster in the order of NaH > LiH > CaH2 > MgH2, which is consistent with the inverse order of electronegativity of those metals, i.e. Na < Li = Ca < Mg. The thermal decomposition properties indicated that both Mg(NH2)2 and Ca(NH2)2 decomposed and emitted NH3 at lower temperature than LiNH2.
KW - Ammonia
KW - Hydrogen storage
KW - Metal amide
KW - Metal hydride
KW - Reactive ball milling
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U2 - 10.1016/j.jpowsour.2005.03.228
DO - 10.1016/j.jpowsour.2005.03.228
M3 - Article
AN - SCOPUS:33646847299
SN - 0378-7753
VL - 156
SP - 166
EP - 170
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 2
ER -
