汽车尾气净化催化剂的研究

STUDIES ON THE CATALYST FOR PURIFICATION OF AUTOMOBILE EXHAUST-GAS

为消除汽车尾气的污染,我们研制了一种载有低含量pd·pt/Al2O3蛋白型球形催化剂。用TN—5400 x光能谱多处测得结果见图1。从图中可见催化剂表面无贵金属,

pt-pd/Al_2O_3 Spheric Catalyst was prepared by an improvement on impregnation technigue. The amounts of Pt and Pd in the catalyst were the same as the level in abroad, The results showed that the Combustion point of CO (50% Conversion) was at 140℃ and 90% conversion of CO was at 170℃ (S. V. 30000h^(-1)). The conbustion point of CHx was at 300℃ (S. V. 13000h^(-1)), A life time test of the catalyst for 540 hours shouwed that the ctivity of catalyst was stable, The activity of catalyst was no change too in the conditions of over-heating and carbon-deposition for some time.