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作者研究了负载型的Cu-O,Mn-O,Cu-Mn-O加入氧化铈后的氧性质和固相结构,表明铈可加速催化剂中体相氧的迁移,提高表面氧的稳定性,改善催化剂的贮氧性能和氧化-还原可复性能,抑制活性相的聚集以提高其分散度.铈的存在还能改善铜基负载型催化剂的性能,提高2NO+CO→N_2O+CO_2反应的速度.本文以甲苯的催化燃烧作为研究对象,考察了甲苯在Cu-Mn-Ce-O催化剂上的催化氧化性能和氧化铈对其催化行为的影响.
The authors investigated the oxygen and solid phase structures of Cu-O, Mn-O and Cu-Mn-O loaded cerium oxide, indicating that cerium can accelerate the migration of bulk oxygen in the catalyst and improve the surface oxygen stability, Improve the oxygen storage performance and redox recombination performance of the catalyst, and inhibit the agglomeration of the active phase to improve its dispersion. The presence of cerium can also improve the performance of the copper-based supported catalyst and increase the reaction rate of 2NO + CO → N 2 O + CO 2 In this paper, the catalytic combustion of toluene was taken as the research object to investigate the catalytic oxidation of toluene over Cu-Mn-Ce-O catalyst and the effect of cerium oxide on its catalytic behavior.