Abstract
In this article, liquefaction of hydrogen gas on platinum (Pt)-supported carbon nano-layers was investigated. In the experiments, H(2)PtCl(6) was used as Pt precursor and to prepare the Pt catalytic reaction nano-layer. The required amounts of H(2)PtCl(6) were mixed with 5 wt% carbon prepared by burning naphthalene in air. The catalyzed carbon and hydrogen gas was loaded into an autoclave. The autoclave was cooled using an external liquid nitrogen bath. After each run, non-liquefied hydrogen gas was vented, and then the autoclave was heated with an external heater for determining the liquefaction hydrogen in the reaction conditions. The yield of liquefied hydrogen was 7.4% weight of Pt-catalyzed carbon for 30 min.