Abstract

Na promoted Pt/ catalysts with various Na amounts (1, 2, and 3wt%) have been applied to water gas shift reaction (WGS) at a gas hourly space velocity (GHSV) of 45515 . 1wt%Pt-2wt%Na/ catalyst exhibited the highest WGS activity at among the catalysts prepared in this study. In addition, 1wt%Pt-2wt%Na/ catalyst showed relatively stable activity with time on stream. The high activity/stability of 1wt%Pt-2wt%Na/ catalyst was correlated to its easier reducibility and higher oxygen storage capacity (OSC). As a result, 2wt% Na promoted Pt/ can be a promising candidate catalyst for the single stage WGS, which requires high intrinsic activity at very high GHSV.

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