标题:
整体式铜钴复合氧化物催化剂的乙酸乙酯催化燃烧性能Catalytic Combustion Performance of Ethyl Acetate with Copper-Cobalt Composite Oxide Catalysts
作者:
邢丰, 陈文亚, 王树元, 罗孟飞
关键字:
堇青石, 乙酸乙酯, Cu-Co复合氧化物, 催化燃烧Cordierite, Ethyl Acetate, Copper-Cobalt Composite Oxide, Catalytic Oxidation
期刊名称:
《Material Sciences》, Vol.5 No.2, 2015-03-19
摘要:
以堇青石蜂窝陶瓷为载体，采用涂覆法制备了一系列不同摩尔比的Cu-Co复合氧化物催化剂并测试了催化剂的乙酸乙酯催化燃烧性能。当Cu与Co摩尔比为1:2时，该催化剂(1Cu2Co)具有较高的乙酸乙酯催化活性(T99 = 250℃)。运用X射线衍射(XRD)，程序升温还原(H2-TPR)，物理吸附(BET)等技术对催化剂进行了表征。结果表明，较高的比表面积(170 m2/g)，较小的CuO和CoOx晶粒以及较强的还原性能为1Cu2Co催化剂高活性的主要原因。A series of Cu-Co catalysts with different Cu-Co mass ratios were prepared via coating method with the cordierite honeycomb ceramic as the carrier, and the catalytic combustion performance of ethyl acetate is tested. The highest activity (T99 = 250˚C) occurred at mole ratio of 1:2 for Cu:Co (1Cu2Co). The catalysts were further characterized by X-ray diffraction (XRD), Brunauer-Emmett- Teller (BET), and temperature-programmed reduction (H2-TPR) technologies. The results showed that the main reasons of higher activity of 1Cu2Co catalysts can be attributed to the enhanced reducibility, higher surface area (170 m2/g), and smaller crystal size of CuO and CoOx。