用浸渍的方法制备了硅钨酸(SiWA)修饰的炭载Pd (Pd/C-SiWA)催化剂.计时电流曲线研究表明,在Pd/C和Pd/C-SiWA催化剂电极上,3000 s时的电流密度分别为0.013和0.082 A/mg,分别为10 s时电流密度的2.5％和14.1％.结果表明,Pd/C-SiWA催化剂对甲酸氧化的电催化稳定性要远远优于Pd/C催化剂.这是因为Pd/C催化剂上SiWA的修饰抑制了甲酸的自分解,从而减小了CO的毒化作用,改进了Pd/C催化剂对甲酸氧化的电催化和稳定性.
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