Methanol tolerant catalyst material
    1.
    发明授权
    Methanol tolerant catalyst material 失效
    甲醇耐受催化剂材料

    公开(公告)号:US06245707B1

    公开(公告)日:2001-06-12

    申请号:US09429702

    申请日:1999-10-28

    IPC分类号: B01J3112

    摘要: Methanol tolerant catalyst materials and a method of making the same are provided. These novel catalyst materials are obtained by mixing together and heat-treating at least two different transition-metal-containing nitrogen chelates. In preferred embodiments, the nitrogen chelates comprise metalloporphyrins such as transition-metal-containing tetraphenylporphins. Preferred transition metals are iron, cobalt, nickel, copper, manganese, ruthenium, vanadium, and zinc, but could be any transition metal other than platinum or palladium. These materials offer improved catalytic oxygen reduction in the presence of methanol, as may occur at a fuel cell cathode after methanol crossover.

    摘要翻译: 提供了甲醇耐受催化剂材料及其制备方法。 这些新型催化剂材料通过将至少两种不同的含过渡金属的氮螯合物混合在一起并进行热处理而获得。 在优选的实施方案中,氮螯合物包括金属卟啉,例如含过渡金属的四苯基卟吩。 优选的过渡金属是铁,钴,镍,铜,锰,钌,钒和锌,但也可以是铂或钯以外的任何过渡金属。 这些材料在甲醇存在下提供改进的催化氧还原,如甲醇交联后在燃料电池阴极可能发生的那样。