摘要
在固定床常压连续流动反应器 气相色谱仪组合装置上考察La2 O3和CeO2 改性Ag/γ Al2 O3催化剂对甲醇深度氧化的催化性能 ,并用XRD进行物相结构表征。结果表明 ,载体中添加CeO2 大大促进了Ag在γ Al2 O3载体上的分散 ,La2 O3的加入能够降低甲醇的起燃温度 ,而La2 O3和CeO2 的协同作用能够提高甲醇转化为CO2 的选择性。
The catalytic performance of La 2O 3 and CeO 2 modified Ag/γ-Al 2O 3 cata lyst on dee p oxidation of methanol is investigated in the assembling of a fixed-bed flow r e actor and a gas chromatograph. The phase structures of the modified catalysts a r e characterized by XRD. The results show that the dispersing of Ag over γ-Al 2O 3 is improved by addition of CeO 2, and the combustion initiation temperature of m ethanol is reduced by introduction of La 2O 3, and the selectivity of CH 3OH to CO 2 is increased by the synergetic effect of La 2O 3 and CeO 2.
出处
《有色金属》
CSCD
2004年第41期77-79,共3页
Nonferrous Metals
