在氨气和硫化氢存在的情况下，甲烷在商用催化剂上的催化燃烧。
Catalytic combustion of methane over commercial catalysts in presence of ammonia and hydrogen sulphide.
作者信息
Hurtado Paloma, Ordóñez Salvador, Vega Aurelio, Díez Fernando V
机构信息
Department of Chemical and Environmental Engineering, University of Oviedo, c/Julián Clavería s/n, Oviedo 33006, Spain.
出版信息
Chemosphere. 2004 May;55(5):681-9. doi: 10.1016/j.chemosphere.2003.10.068.
The performance of different commercially available catalysts (supported Pd, Pt, Rh, bimetallic Pd-Pt, and Cr-Cu-Ti oxide catalyst) for the oxidation of methane, alone and in presence of ammonia and hydrogen sulphide is studied in this work. Catalysts performance was evaluated both in terms of activity and resistance to poisoning. The main conclusions are that supported Pd and Rh, present the highest activities for methane oxidation, both alone and in presence of ammonia, whereas they are severely poisoned in presence of H2S. Pt and Cr-Cu-Ti are less active but more sulphur resistant, but their activity is lower than the residual activity of sulphur-deactivated Pd and Rh catalysts. The Pd-Pt catalyst exhibits low activity and it is quickly deactivated in presence of hydrogen sulphide.
本研究考察了不同市售催化剂（负载型钯、铂、铑、双金属钯-铂以及铬-铜-钛氧化物催化剂）在单独存在以及存在氨和硫化氢的情况下对甲烷氧化的性能。从活性和抗中毒性两方面对催化剂性能进行了评估。主要结论如下：负载型钯和铑在单独存在以及存在氨的情况下对甲烷氧化表现出最高活性，然而在硫化氢存在时它们会严重中毒。铂和铬-铜-钛活性较低但抗硫性更强，不过它们的活性低于硫失活的钯和铑催化剂的残余活性。钯-铂催化剂活性较低，在硫化氢存在时会迅速失活。
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