Sodium borohydride NaBH₄ (SB) readily and completely reacts with four equivalents of propylene glycol HOCH₂CH(OH)CH₃ (PG), resulting in the liberation of four equivalents of H₂ at temperatures starting from 25 °C. Alcoholysis (or glycolysis) takes place. The system SB-4PG is then an attractive H₂ generator thanks to an effective gravimetric hydrogen storage capacity of 2.3 wt%. It offers several other advantages: there is no need of catalyst; there is no precipitation of by-product; PG is among the safest alcohols (much safer than e.g. methanol). The potential of SB-4PG as H₂ generator is thus illustrated and discussed herein.

中文翻译：

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硼氢化钠和丙二醇，是产生2.3 wt％氢的有效组合

硼氢化钠NaBH ₄（SB）容易与四当量的丙二醇HOCH ₂ CH（OH）CH ₃（PG）完全反应，导致从25°C开始释放四当量的H ₂。发生醇解（或糖酵解）。SB-4PG系统是有效的H ₂发生器，这要归功于其有效的重量储氢能力为2.3 wt％。它还具有其他优点：不需要催化剂；没有副产物沉淀；PG是最安全的醇类（除了安全得多中例如甲醇）。因此，本文示出并讨论了SB-4PG作为H ₂发生器的潜力。