Patent ID: 7955580

Claim:
A method of synthesizing a borane having n boron atoms and m hydrogen atoms, the method comprising the steps of: (a) contacting a mixture of a borane anion of the formula [B a H b ] c− and at least one solvent with an acidic ion-exchange resin to produce H c [B a H b ] or a hydrate thereof; (b) degrading at least a portion of H c [B a H b ] or the hydrate thereof to generate at least one borane of the formula, B n H m , by concentrating the mixture comprising H c [B a H b ] or the hydrate thereof under reduced pressure; (c) separating residual borane anion from product borane B n H m ; (d) repeating steps (a)-(c) with residual borane anion recovered in step (c), wherein n is an integer of from 5 to 96, a>n, b≦a+8, c is an integer of 1-8, and m≦n+8.