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    • 4. 发明申请
    • PROCESS FOR CARBON MONOXIDE PREFERENTIAL OXIDATION FOR USE WITH FUEL CELLS
    • 用于与燃料电池一起使用的一氧化碳优选氧化法
    • WO0193355A3
    • 2002-07-25
    • PCT/US0117357
    • 2001-05-30
    • UOP LLCABDO SUHEIL FDEBOY CYNTHIA ASCHROEDER GERALYN F
    • ABDO SUHEIL FDEBOY CYNTHIA ASCHROEDER GERALYN F
    • C01B3/38B01J21/04B01J23/46B01J35/10B01J37/12B01J37/16C01B3/58C10K3/04H01M8/00H01M8/06H01M8/10
    • H01M8/0662B01J21/04B01J23/462B01J35/109B01J37/12B01J37/16C01B3/583C01B2203/044C01B2203/047
    • Disclosed is a hydrogen generation process for use with fuel cells which includes a preferential oxidation step to reduce the concentration of carbon monoxide. The preferential oxidation step includes contacting a fuel stream comprising hydrogen and carbon monoxide in the presence of an oxygen at a preferential oxidation temperature of between 70 DEG and 160 DEG C with preferential oxidation catalyst for reducing the concentration of carbon monoxide to produce a treated fuel gas stream comprising less than 50 ppm-vol carbon monoxide. The preferential oxidation catalyst comprises ruthenium metal disposed on an alumina carrier having a low density and a high prorosity. Superior performance at low preferential oxidation temperatures below 130 DEG C was observed when the alumina carrier contained a bimodal pore distribution with an average pore distribution of from 20 to 3000 angstroms. The preferential oxidation catalyst may be employed to reduce carbon monoxide in fuel gas streams supplied to fuel cells wherein carbon monoxide will poison the active noble metal membrane and higher preferential oxidation temperatures may reduce the hydrogen content of the gas stream.
    • 公开了一种用于燃料电池的氢气生成方法,其包括优先氧化步骤以降低一氧化碳的浓度。 优选氧化步骤包括在优选氧化温度为70至160℃之间的氧气存在下将包含氢气和一氧化碳的燃料流与优先氧化催化剂接触,以减少一氧化碳的浓度以产生经处理的燃料气体 包含小于50ppm体积的一氧化碳的物流。 优选氧化催化剂包含设置在氧化铝载体上的钌金属,其具有低密度和高分子量。 当氧化铝载体含有平均孔分布为20至3000埃的双峰孔分布时,观察到低于130℃的低优先氧化温度下的优异性能。 可以使用优先氧化催化剂来减少供应到燃料电池的燃料气流中的一氧化碳,其中一氧化碳将中毒活性贵金属膜,并且较高的优先氧化温度可降低气流的氢含量。
    • 6. 发明申请
    • METHOD FOR PRODUCING A PREFERENTIAL OXIDATION CATALYST
    • 生产优选氧化催化剂的方法
    • WO0192156A3
    • 2002-04-04
    • PCT/US0117356
    • 2001-05-30
    • UOP LLCABDO SUHEIL FDEBOY CYNTHIA ASCHROEDER GERALYN F
    • ABDO SUHEIL FDEBOY CYNTHIA ASCHROEDER GERALYN F
    • B01J23/46C01B3/58
    • C01B3/583B01J23/462C01B2203/044C01B2203/047
    • Disclosed is a hydrogen generation process for use with fuel cells which includes a preferential oxidation step to reduce the concentration of carbon monoxide. The preferential oxidation step includes contacting a fuel stream comprising hydrogen and carbon monoxide in the presence of an oxygen at a preferential oxidation temperature of between 70 DEG and 160 DEG C with preferential oxidation catalyst for reducing the concentration of carbon monoxide to produce a treated fuel gas stream comprising less than 50 ppm-vol carbon monoxide. The preferential oxidation catalyst comprises ruthenium metal dispersed on a shaped alumina carrier, wherein at least 60 percent of the ruthenium metal is present in a band extending from the surface towards the center and having a width of 50 percent of the distance from the surface to the center of the shaped alumina carrier. Superior performance at low preferential oxidation temperatures below 130 DEG C was observed when the band comprised 50 percent of the alumina carrier and contained at least 60 percent of the ruthenium metal. The preferential oxidation catalyst may be employed to reduce carbon monoxide in fuel gas streams supplied to fuel cells wherein carbon monoxide will poison the active noble metal membrane and higher preferential oxidation temperatures may reduce the hydrogen content of the gas stream.
    • 公开了一种用于燃料电池的氢气生成方法,其包括优先氧化步骤以降低一氧化碳的浓度。 优选氧化步骤包括在优选氧化温度为70至160℃之间的氧气存在下将包含氢气和一氧化碳的燃料流与优先氧化催化剂接触,以减少一氧化碳的浓度以产生经处理的燃料气体 包含小于50ppm体积的一氧化碳的物流。 优选氧化催化剂包括分散在成形氧化铝载体上的钌金属,其中至少60%的钌金属存在于从表面向中心延伸的带中,并且具有从表面到 成型氧化铝载体的中心。 当带包含50%的氧化铝载体并且含有至少60%的钌金属时,观察到在低于130℃的低优先氧化温度下的优异性能。 可以使用优先氧化催化剂来减少供应到燃料电池的燃料气流中的一氧化碳,其中一氧化碳将中毒活性贵金属膜,并且较高的优先氧化温度可降低气流的氢含量。