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公开(公告)号：US5378142A
公开(公告)日：1995-01-03
申请号：US684409
申请日：1991-04-12
IPC分类号： B01J23/63 , B01J23/96 , B01J38/12 , C01G55/00 , F23C13/00 , F23D3/40 , B01J23/10 , B01J23/56
摘要： A catalyst composition containing one or more binary oxides of palladium and rare earth metal such as Ce, La, Nd, Pr and/or Sm. The catalyst composition is used for the catalytic combustion of gaseous combustion mixtures of oxygen and carbonaceous fuels such as methane, e.g., a natural gas/air combustion mixture. Specific preferred binary oxides may be, for example, M.sub.2 O.sub.3.sup.. PdO (e.g., La.sub.2 O.sub.3.sup.. PdO) or 2M.sub.2 O.sub.3.sup.. PdO, wherein in each case M Is La, Nd or Sm. A process of combusting gaseous carbonaceous fuels includes contacting a catalyst as described above under combustion conditions, e.g., 925.degree. C. to 1650.degree. C. and 1 to 20 atmospheres pressure, to carry out sustained combustion of the combustion mixture, including catalytically supported thermal combustion. Regeneration of over-temperatured M.sub.2 O.sub.3.sup.. PdO catalyst is also provided for.
摘要翻译： 含有一种或多种钯和稀土金属如Ce，La，Nd，Pr和/或Sm的二元氧化物的催化剂组合物。 催化剂组合物用于氧气和碳质燃料如甲烷的气体燃烧混合物的催化燃烧，例如天然气/空气燃烧混合物。 特别优选的二元氧化物可以是例如M 2 O 3 PdO（例如La 2 O 3·P 10）或2M 2 O 3·P 10，其中在每种情况下M是La，Nd或Sm。 燃烧气态含碳燃料的方法包括在燃烧条件例如925℃至1650℃和1至20大气压的压力下使如上所述的催化剂接触，以进行燃烧混合物的持续燃烧，包括催化负载的热 燃烧。 还提供了过温度M2O3.PdO催化剂的再生。
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公开(公告)号：US5108730A
公开(公告)日：1992-04-28
申请号：US887578
申请日：1986-08-06
CPC分类号： C01B21/265 , B01J23/40 , B01J35/06 , C01B21/267 , B01J23/42 , B01J23/464
摘要： Method of low temperature start-up of ammonia oxidation plants by passing hydrogen and oxygen over platinum containing gauzes bearing a platinum coating having a surface area in excess of about 50 cm.sup.2 /g, thereby heating them to temperatures which are sufficient for catalytic oxidation of ammonia.
摘要翻译： 通过使含有表面积超过约50cm2 / g的铂镀层的含铂纱布通过氢气和氧气使氨氧化装置低温启动的方法，从而将其加热至足以催化氧化氨的温度 。
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