苯在稀土钙钛矿型催化剂上完全氧化动力学

The Exhaustive Oxidation Kinetics of Benzene Over Rare-Earth Perovskite Structure Catalyst

采用催化燃烧的方法治理苯系废弃物是一种经济、高效的方法。应用气相色谱法、采用微型微分反应器研究了苯在稀土钙钛矿型催化剂上完全氧化的机理,为制造新型、高效催化剂提供参考性意见。推算了反应级数的理论值,验证了反应级数的实验值。实验结果表明,苯在稀土钙钛矿型催化剂上完全氧化反应的反应级数为1。反应级数的实验值与理论值吻合很好。进一步利用数学方法推导出完全氧化反应的反应级数m等于催化剂氧化态的百分率θ。实验结果表明,本反应符合Redox机理,其Redox机理的活化能E1=72.90kJ/mol;E2=136.93kJ/mol。

It is an economic, efficient method to treat the waste of Benzene by the catalytic combustion. Through applying GC and mini-reactor, the mechanism of the exhaustive oxidation for Benzene over rare-earth perovskite structure catalyst was studied. The theoretical value of the reaction order was calculated. The experimental value of the reaction order was verified. The experimental result shows that the reaction order of the exhaustive oxidation of Benzene over rare-earth perovskite structure catalyst is 1. The theoretical value matches to the experimental value of the reaction order very well. The reaction order“ m ” equals the percentage “ θ ” of the oxidation state of the catalyst. The experimental data show that the mechanism of the reaction coincide with that discussed by Rodox. The activity energy E 1=72.90 kJ/mol; E 2=136.93 kJ/mol.