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在氧气过量的条件下，考察了Ｐｔ／ＮＭ、Ｐｄ／ＮＭ催化剂上甲苯深度氧化反应动力学及反应活性。Ｐｔ／ＮＭ催化剂对甲苯的氢化活性高于Ｐｄ／ＮＭ，深度氧化反应服从反应物强吸附双分子反应Ｌｔａｎｇｍｕｉｒ－Ｈｉｎｓｈｅｌｗｏｏｄ机理，其动力学方程为：相应的动力学参数，Ｐｔ／ＮＭ为：活化能△Ｅ＝４９．９ｋＪ／ｍｏｌ，吸附热Ｑ＝－２９．６ｋＪ／ｍｏｌ；Ｐｄ／ＮＭ为：△Ｅ＝９４．２ｋＪ／ｍｏｌ，Ｑ＝－１９．１ｋＪ／ｍｏｌ．
In the presence of excess oxygen, the kinetics and reactivity of deep oxidation of toluene over Pt / NM and Pd / NM catalysts were investigated. The hydrogenation activity of toluene on Pt / NM catalyst is higher than that of Pd / NM. The deep oxidation follows Ltangmuir-Hinshelwood mechanism of strong adsorption bimolecular reaction. The kinetic equation is: corresponding kinetic parameters, Pt / NM are: activation energy △ E = 49.9kJ / mol, the adsorption heat Q = -29.6kJ / mol; Pd / NM: △ E = 94.2kJ / mol, Q = -19.1kJ / mol.