ORGANOMETALLIC COMPLEXES AS HYDROGEN STORAGE MATERIALS AND A METHOD OF PREPARING THE SAME

摘要

Organometallic complexes of organic materials with hydroxy group and transition metal are provided to adsorb and store reversibly hydrogen under relatively mild condition, and significantly increase storage amount of hydrogen. A method for preparing the organometallic complexes is also provided to improve preparation yield and stability. The organometallic complexes represented by the formula(1): A-(OMHm)n is prepared by binding a transition metal atom to an oxygen atom of an organic molecule having hydroxy group, wherein A is an organic molecule, M is a transition metal element having valence of 2 or more, m is -1 as the valence of M, and n is an integer from 1 to 1000. A method for preparing the organometallic complexes comprises the steps of: (a) mixing organic-transition metal halide complex, metal hydride selected from lithium borohydride(LiBH4), sodium borohydride(NaBH4) and magnesium borohydride(Mg(BH4)2), and 2-alkanol selected from 2-propanol and 2-butanol to prepare reaction solution; and (b) adding noble metal catalyst into the reaction solution, and reflux reacting them under hydrogen gas supply.