Mechano-chemical Synthesis of NaAlH4: Optimization of Reaction Conditions
Hydrogen Energy Research Center, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Republic of Korea
NaAlH4 was mechano-chemically synthesized with high energy ball-milling method. The effect of synthesis conditions such as milling time, H2 pressure, chloride catalysts, and solvents was investigated to enhance the synthesis of NaAlH4. Among the chloride catalysts, TiCl4 showed the highest H2 pressure decrease which means the highest NaH conversion to NaAlH4. Furthermore, when the NaAlH4 was synthesized with THF solvent, it exhibited the higher H2 pressure decrease than that of sample prepared without THF solvent. This is mainly due to the synergy effect of TiCl4 catalyst and THF solvent.
© The Authors, published by EDP Sciences, 2016
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