Su Ji, Yang Lisha, Lu Mi, Lin Hongfei
Department of Chemical and Material Engineering, University of Nevada, Reno, 1664 N. Virginia St. M/S388, Reno, NV 89557 (USA), Fax: (+1) 7753275059.
ChemSusChem. 2015 Mar;8(5):813-6. doi: 10.1002/cssc.201403251. Epub 2015 Feb 6.
A highly efficient, reversible hydrogen storage-evolution process has been developed based on the ammonium bicarbonate/formate redox equilibrium over the same carbon-supported palladium nanocatalyst. This heterogeneously catalyzed hydrogen storage system is comparable to the counterpart homogeneous systems and has shown fast reaction kinetics of both the hydrogenation of ammonium bicarbonate and the dehydrogenation of ammonium formate under mild operating conditions. By adjusting temperature and pressure, the extent of hydrogen storage and evolution can be well controlled in the same catalytic system. Moreover, the hydrogen storage system based on aqueous-phase ammonium formate is advantageous owing to its high volumetric energy density.
基于相同碳负载钯纳米催化剂上碳酸氢铵/甲酸铵的氧化还原平衡，开发了一种高效、可逆的储氢-放氢过程。这种非均相催化储氢系统与同类均相系统相当，并且在温和的操作条件下，已显示出碳酸氢铵加氢和甲酸铵脱氢的快速反应动力学。通过调节温度和压力，可以在同一催化系统中很好地控制储氢和放氢的程度。此外，基于水相甲酸铵的储氢系统因其高体积能量密度而具有优势。
