采用阳极氧化工艺在不锈钢丝网载体上自生长一层氧化膜, 再在其上负载活性组分铈、铂和钯, 制备了金属丝网催化剂. 研究了阳极氧化的电流密度和电解液种类等因素对阳极氧化膜形成的影响,以及还原时间和焙烧温度对催化剂氧化活性的影响. 结果表明,改变制备参数对氧化膜结构有较大影响, 进而影响到催化剂的活性.采用10%H2SO4电解液,控制电流密度为1.0 A时得到的氧化膜载体浸渍活性组分后,具有良好的催化活性和稳定性.
A new type of catalyst consisting of a porous anodic oxidation membrane formed on the surface of stainless steel wire mesh and active compounds of cerium, platinum and palladium dispersed on the support surface was successfully prepared. The catalyst shows good activity for the oxidation of toluene, acetone and ethyl acetate. The results show that the operating parameters affect the formation of porous anodic oxidation membrane and thereby affect the catalytic activity subsequent. The catalyst, prepared by using 10% H2SO4 as electrolyte and current density 1.0 A, shows a good catalytic activity and stability.
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