In this research a technique for the process of ABO 3 supported on γ-Al 2O 3 was proposed, in which the modified carrier was adopted and the citric acid complexing sol-gel method was used. By means of this technique,...In this research a technique for the process of ABO 3 supported on γ-Al 2O 3 was proposed, in which the modified carrier was adopted and the citric acid complexing sol-gel method was used. By means of this technique, the activity for SO 2 reduction over LaFeO 3/γ-Al 2O 3 is as high as that over non-supported catalyst. The substitution of Sr for La and Cu, Co for Fe decreased the activity of the catalyst, especially when the reaction temperature was low.展开更多
采用固相反应制备了Ni O-La Co O3催化剂,考察了焙烧温度以及Ni含量对催化剂的CO和丙烷氧化活性的影响。用X射线粉末衍射、H2-程序升温还原等技术对催化剂进行了表征。结果表明,在焙烧温度为700-1000℃时,焙烧温度越高,催化剂的丙烷和C...采用固相反应制备了Ni O-La Co O3催化剂,考察了焙烧温度以及Ni含量对催化剂的CO和丙烷氧化活性的影响。用X射线粉末衍射、H2-程序升温还原等技术对催化剂进行了表征。结果表明,在焙烧温度为700-1000℃时,焙烧温度越高,催化剂的丙烷和CO氧化性能越差,其中700℃焙烧后的10Ni O-La Co O3催化剂的效果最好。助剂Ni能有效提高La Co O3催化剂的丙烷和CO氧化性能,其中Ni含量为7.5%的7.5Ni O-La Co O3催化剂氧化性能最佳。研究发现催化剂的CO和丙烷氧化活性与催化剂中氧活动性具有相关性。展开更多
文摘In this research a technique for the process of ABO 3 supported on γ-Al 2O 3 was proposed, in which the modified carrier was adopted and the citric acid complexing sol-gel method was used. By means of this technique, the activity for SO 2 reduction over LaFeO 3/γ-Al 2O 3 is as high as that over non-supported catalyst. The substitution of Sr for La and Cu, Co for Fe decreased the activity of the catalyst, especially when the reaction temperature was low.
文摘采用固相反应制备了Ni O-La Co O3催化剂,考察了焙烧温度以及Ni含量对催化剂的CO和丙烷氧化活性的影响。用X射线粉末衍射、H2-程序升温还原等技术对催化剂进行了表征。结果表明,在焙烧温度为700-1000℃时,焙烧温度越高,催化剂的丙烷和CO氧化性能越差,其中700℃焙烧后的10Ni O-La Co O3催化剂的效果最好。助剂Ni能有效提高La Co O3催化剂的丙烷和CO氧化性能,其中Ni含量为7.5%的7.5Ni O-La Co O3催化剂氧化性能最佳。研究发现催化剂的CO和丙烷氧化活性与催化剂中氧活动性具有相关性。
