We examined the effects of concentrations and identities of various glymes, from monoglyme up to tetraglyme, on H2 release from the thermolysis of Mg(BH4)2 at 160-200 ºC for 8 h. 11B NMR analysis shows major products of Mg(B10H10) and Mg(B12H12), however, their relative ratio is highly dependent both on the identity and concentration of the glyme to Mg(BH4)2. Selective for-mation of Mg(B10H10) was observed at sub-stoichiometric amount of monoglyme or tetraglyme. However, thermolysis of Mg(BH4)2 in the presence of stoichiometric or greater equivalent of glymes leads to unselective formation of Mg(B10H10) and Mg(B12H12) products or inhibition of H2 release, respectively.
Published: July 13, 2021
Citation
Tran B.L., T. Allen, M.E. Bowden, S. Autrey, and C.M. Jensen. 2021.Effects of Glymes on the Distribution of Mg(B10H10) and Mg(B12H12) from the Thermolysis of Mg(BH4)2.Inorganics 9, no. 6:article 41.PNNL-SA-161527.doi:10.3390/inorganics9060041