Badding Catherine K, Soucy Taylor L, Mondschein Jared S, Schaak Raymond E
Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States.
ACS Omega. 2018 Mar 26;3(3):3501-3506. doi: 10.1021/acsomega.7b02003. eCollection 2018 Mar 31.
Ammonia borane (NH-BH) is of interest as a hydrogen storage material because of its ease of use and its ability to release three molar equivalents of H(g) via catalytic hydrolysis. Most heterogeneous catalysts for ammonia borane hydrolysis are nanoparticles containing expensive noble metals. Here, we show that metal ruthenate perovskites function as active and durable catalysts for ammonia borane hydrolysis. As a bulk powder, CaRuO catalyzes the hydrolysis of ammonia borane at room temperature and is recyclable and reusable. CaRuO facilitates the release of H(g) from aqueous ammonia borane solutions at comparable rates to some other heterogeneous catalyst systems while having a low noble metal content. Other ruthenium-based perovskites, including SrRuO, CaLaRuO, SrCoRuO, and SrLaCoRuO, are similarly active catalysts for room-temperature ammonia borane hydrolysis.
氨硼烷（NH₃BH₃）作为一种储氢材料备受关注，因为它使用方便，且能够通过催化水解释放三摩尔当量的H₂(g)。大多数用于氨硼烷水解的多相催化剂是含有昂贵贵金属的纳米颗粒。在此，我们表明金属钌酸盐钙钛矿可作为氨硼烷水解的活性且耐用的催化剂。作为一种块状粉末，CaRuO₃在室温下催化氨硼烷的水解，并且可回收再利用。CaRuO₃能以与其他一些多相催化剂体系相当的速率促进氨硼烷水溶液中H₂(g)的释放，同时贵金属含量较低。其他基于钌的钙钛矿，包括SrRuO₃、CaLaRuO₃、SrCoRuO₃和SrLaCoRuO₃，同样是室温下氨硼烷水解的活性催化剂。
