摘要
以改性后的堇青石为惰性载体,采用浸渍法制备了一系列Cu系催化剂,活性考察表明,Cu-Mn-Ni-Ce-O/Al2O3/CC催化剂低温活性比较高,反应温度在150℃时转化率达50.46%,300℃达到100%。BET、XPS和TPR测试表明,助剂Mn、Ni和Ce的添加,增大了Cu系催化剂比表面积和平均孔径,使催化剂更易被还原,催化剂表面的元素以Cu2+、Mn4+、Mn3+、Ni2+和Ce4+价态的氧化态物种存在。
Cu catalysts with modified cordierite as inert carrier were prepared by impregnation method. The results of activity study showed that low-temperature activity of Cu-Mn-Ni-Ce-O/Al2O3/CC catalyst was higher, the conversion rate reached 50.46% at 150 ℃ and 100% at 300 ℃, respectively. The catalyst was characterized by BET, XPS and TPR. The results showed that specific surface area and average pore diameter of Cu catalyst increased after adding Mn, Ni and Ce, and the catalyst was reduced more easily. The elements on the catalyst surface existed in the oxide forms of Cu（ Ⅱ1 ） ,Mn（ Ⅳ ） ,Mn（ Ⅲ） ,Ni （Ⅱ） and Ce（Ⅳ）.
出处
《工业催化》
CAS
2008年第10期25-29,共5页
Industrial Catalysis
基金
黑龙江省博士后基金(LRB07-233)
国防科工委预研项目(40107030201)
