摘要
采用浸渍法制备了一系列γ－Ａｌ２Ｏ３负载的Ｃｒ－Ａｇ双金属氧化物催化剂，并考察了对ＣＯ的氧化活性．结果表明，由Ｃｒ（ＮＯ３）３、ＣｒＯ３、Ｃｒ２（Ｃ２Ｏ４）３作为Ｃｒ源制备的单组分Ｃｒ－／γ－Ａｌ２Ｏ３催化剂对ＣＯ的氧化活性基本相同，且均较差；但添加少量Ａｇ（＜２ｗｔ％）却能明显提高Ｃｒ／γ－Ａｌ２Ｏ３催化剂对ＣＯ的氧化活性。
A series of the γ Al 2O 3 supported Cr Ag catalysts were prepared by impregnation method. The activities of these catalysts for CO oxidation were determined in a gas flow system. As a result,the oxidation activities of Cr/γ Al 2O 3 catalysts preparing with Cr (NO 3) 3,CrO 3 and Cr 2(C 2O 4) 3 were very close. The activities of catalysts were obviously enhanced with the addition of Ag (<2wt%). The activities of Cr Ag/ γ Al 2O 3 catalysts were affected by the variation of preparative method.
出处
《科技通报》
1997年第2期103-106,共4页
Bulletin of Science and Technology
关键词
催化剂
一氧化碳
氧化性能
金属氧化物
Cr/γ Al 2O 3 catalyst, addition of Ag, oxidation activity
