Low-temperature oxidation of carbon monoxide on Pd(Pt)/CeO2 catalysts prepared from complex salts
作者:E. M. Slavinskaya、R. V. Gulyaev、O. A. Stonkus、A. V. Zadesenets、P. E. Plyusnin、Yu. V. Shubin、S. V. Korenev、A. S. Ivanova、V. I. Zaikovskii、I. G. Danilova、A. I. Boronin
DOI:10.1134/s0023158411020182
日期:2011.3
Catalysts containing cerium oxide as a support and platinum and palladium as active components for the low-temperature oxidation of carbon monoxide were studied. The catalysts were synthesized in accordance with original procedures with the use of palladium and platinum complex salts. Regardless of preparation procedure, the samples prepared with the use of only platinum precursors did not exhibit
研究了以氧化铈为载体,以铂和钯为活性成分的一氧化碳的低温氧化催化剂。根据原始程序,使用钯和铂络合物盐合成催化剂。无论制备程序如何,仅使用铂前体制备的样品在低温下均不显示活性,因为仅在CeO 2的表面上形成了金属和氧化物(PtO,PtO 2)纳米颗粒。与铂不同,钯可以分散在CeO 2的表面上在最大程度上达到几乎是离子(原子)态,它与氧化铈形成混合表面相。在混合的钯-铂催化剂中,铂在钯的作用下经历分散的能力也增加了。结果,形成了在低温下表现出催化活性的具有式Pd x Pt y CeO 2-δ的组合表面相。