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研究了含铜、锰、过渡金属、稀土混合氧化物燃烧催化剂。着重研究稀土的加入方法、浸渍次数对催化活性的影响。结果表明,稀土以分散在各次浸渍液中浸渍,以二次浸渍为宜;在第二载体中加入Y_2O_3能降低催化剂的起燃温度和提高催化剂的耐热性。
The catalysts containing copper, manganese, transition metal and rare earth mixed oxides were studied. Focus on the study of rare earth addition method, the number of impregnation on the catalytic activity. The results show that rare earth dispersed in each impregnation solution is suitable for secondary impregnation. Adding Y_2O_3 to the second support can decrease the light-off temperature of the catalyst and increase the heat resistance of the catalyst.