CAJ | 학술논문

采用共沉淀法制备CexMn1-xCaO2-λ载体，然后用等体积浸渍法负载活性组分Cu,制得Cuy／CexMn1-xCa2O2-λ催化剂．实验结果表明：Ce：Mn：Ca摩尔比为0．6：0．4：0．08．Cu负载量为5％时，制得的Cu5%／Ce0.6Mn0.4Ca0.6Ca0.08O2-λ催化剂对CO、C3H6和NO的转化反应具有良好的催化活性，能使CO、C3H6和NO的起燃温度‰分别为107℃、218℃和212℃．完全转化温度T90分别为144℃、323℃和298℃：南于Mn和Ca能与Ce氧化物形成稳定的立方品同溶体，不出现Mn2O3或CuO品相在载体表面富集的现象，Mn和Ca与Ce的良好协同作用有效提高催化活性，所以Cu5%／Ce0.6Mn0．4CaO0．08O2-λ催化性能良好．
채용공침정법제비CexMn1-xCaO2-λ재체，연후용등체적침지법부재활성조분Cu,제득Cuy／CexMn1-xCa2O2-λ최화제．실험결과표명：Ce：Mn：Ca마이비위0．6：0．4：0．08．Cu부재량위5％시，제득적Cu5%／Ce0.6Mn0.4Ca0.6Ca0.08O2-λ최화제대CO、C3H6화NO적전화반응구유량호적최화활성，능사CO、C3H6화NO적기연온도‰분별위107℃、218℃화212℃．완전전화온도T90분별위144℃、323℃화298℃：남우Mn화Ca능여Ce양화물형성은정적립방품동용체，불출현Mn2O3혹CuO품상재재체표면부집적현상，Mn화Ca여Ce적량호협동작용유효제고최화활성，소이Cu5%／Ce0.6Mn0．4CaO0．08O2-λ최화성능량호．
The CexMn1-xCaO2-λ supporter was prepared by coprecipitation method, and then the Cuy/CexMn1-xCaO2-λcatalyst was made by volumetric immersion method to load active component Cu on the supporter. The experimental result indicated that when Ce： Mn ： Ca molar ratio was 0.6：0.4 ： 0.08 and the content of Cu was 5%（weigh）, the Cu5%/Ce0.6Mn0.4Ca0.08O2-λ catalyst showed high catalytic performance. The hght-off temperatures of CO, C3H6 and NO were 107 ℃, 218 ℃ and 212 ℃respectively, and CO, C3H6 and NO could be completely converted when the temperature were 144 ℃, 323 ℃ and 298 ℃respectively. Because Mn and Ca could form stable cubic structure of the solid solution with Ce oxide, and did not appear the Mn2O3 or CuO crystalline phase enrichment on the surface of the supporter, the good synergistic effect of Ce-Mn-Ca could improve the catalytic activity effectively, so the Cu5%/Ce0.6Mn0.4Ca0.08O2-λ catalyst exhibited high catalytic performance.