| 초록 |
The WGS reaction is used industrially to produce H2 for petroleum refining, chemicals production, and in processes that require synthesis gas with high H2/CO ratios. Since the reaction is exothermic, the equilibrium CO conversion is highest at low temperatures. Consequently two-stage HTS and LTS process are often used for WGS reaction [1-3]. In industrial reactors, Fe3O4-Cr2O3 catalyst was used for the high temperature shift (HTS) reaction and Cu-Zn/Al2O3 catalyst was used for the low temperature shift (LTS) reaction. The existing commercial LTS catalyst was unsuitable for transportation applications because of their large size and weight, and the deactivation tendency of the copper-based catalysts under the severe conditions encountered in an automotive system. In this work, we have studied the WGS reaction over the transition metal carbides and the platinum supported cerium oxide catalysts, and the performance of the prepared catalysts were compared with the commercial LTS catalyst. |
