Abstract
AbstractTo develop a new type of energetic ionic liquid (EIL) that has a catalytic effect on the thermal decomposition of ammonium perchlorate (AP) and can be ignited in white fuming nitric acid (WFNA), six borane‐containing ionic liquids based on biferrocene were successfully synthesized, and their structures were determined by x‐ray crystallography. Except for iodized salts, four EILs with high thermal stability burned rapidly in WFNA, one of which, bis[1‐(ferrocenylmethyl)imidazole‐3‐yl] dihydroboronium cyanoborohydride, [Fcmim][BH3CN], produced the shortest ignition delay (ID) time of 5 ms. However, iodized salts demonstrated a better catalytic effect on AP than did BH3CN−‐ or N(CN)2−‐based EILs and bis[1‐(ferrocenylmethyl)benzimidazole‐3‐yl] dihydroboronium iodide, [Fcbemim][I], could advance the final thermal decomposition temperature of AP by 50°C. Anions have a significant effect on the structures and performances of ionic liquids.
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