| 内容提要: |
Proton exchange membrane fuel cell(PEMFC),which acts as a small-scale power generation system,has draw much attention ,due to its high high-energy conversion efficiency and nearly zero emission. The fuel of hydrogen is generally produced from various hydrocarbons via the steam reforming and the water–gas shift(WGS) reactions. Due to limited thermodynamics of those two catalytic reactions, there is a small amount of CO in the H2-rich gases,which poisons the platinum anode . Among all methods for CO removal, the preferential oxidation (PROX) of CO is considered to be one of the most promising methods, owing to its efficiency,simplicity and low cost. |