Synthesis, properties and thermal decomposition particularities of magnesium borohydride ammoniates

摘要

An elemental analysis, as well as XPD, IR, XPS and TGA-DSC/TPD-MS methods are used to compare composition and properties of Mg(BH4)2(NH3)n (n = 1, 2, 3) complexes obtained by following methods: (1) mechanochemical treatment and (2) heating of magnesium boro-hydride hexaammoniate and unsolvated magnesium borohydride mixtures. A systematic study of the thermal decomposition features and gases composition released during the thermolysis of the synthesized compounds is carried out. The differences found are discussed.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.