Thermogravimetric analysis-based screening of metal (II) chlorides as dopants for the destabilization of solid-state hydrazine borane

Authors : WEIGUANG CHEN, UMIT BILGE DEMIRCI

Pages : 984-997

View : 14 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Thermogravimetric analysis insert ignore into journalissuearticles values(TGA); is a powerful technique for screening boranes envisaged for chemical hydrogen storage. The demonstration is based on the use of six metal insert ignore into journalissuearticles values(II); chlorides insert ignore into journalissuearticles values(MCl$_{2});$ insert ignore into journalissuearticles values(with M as 3d-metal or d$^{8}$-metal); as destabilizing agents of solid-state hydrazine borane insert ignore into journalissuearticles values(N$_{2}$H$_{4}$BH$_{3});$. On the basis of TGA profiles combined with derivative thermogravimetric insert ignore into journalissuearticles values(DTG); curves, it is shown that: e.g. insert ignore into journalissuearticles values(1); CuCl$_{2}$ is an inefficient dopant whereas it is efficient towards ammonia borane insert ignore into journalissuearticles values(NH$_{3}$BH$_{3});$; insert ignore into journalissuearticles values(2); one of the best destabilization results is achieved with N$_{2}$H$_{4}$BH$_{3}$ doped by 10 wt{\%} CuCl$_{2}$-NiCl$_{2}$, the sample decomposing from 30 $^{\circ}$C with greatly mitigated amounts of gaseous by-products; insert ignore into journalissuearticles values(3); in a few cases, the destabilization extent is so important that the doped samples could be envisaged as energetic materials. Above all, the present report shows the importance of TGA-DTG in the field of boron- and nitrogen-containing materials and the proposed protocol could be used by other groups so that literature-based comparisons are more relevant.
Keywords : Hydrazine borane, metal chloride, screening, thermogravimetric analysis, thermolysis