3)2(NO2)2作為前驅體，通過過量浸漬法制備Pt/Al2O3催化劑，并將其在4種不同的氣氛（H2、O2、NO或NH3）中進行焙燒。利用N2吸脫附、X射線衍射、程序升溫還原（H2-TPR）、CO脈沖吸附、CO原位漫反射傅里葉變換紅外光譜（CO in situ DRIFTS）等手段對催化劑的物化性質進行了表征。結果表明：由于還原性焙燒氣氛導致了眾多小尺寸和高分散的Pt納米顆粒的生成，經(jīng)1%（體積分數(shù)）H2/N2焙燒的Pt/Al2O3表現(xiàn)出最佳的CO和C3H6催化氧化性能。;Pt/Al2O3 catalysts were prepared by an excess impregnation method with Pt(NH3)2(NO2)2 as the precursor. Then they were calcined in four different atmospheres (H2, O2, NO, NH3), and characterized by N2 adsorption and desorption test, X-ray diffraction, H2-temperature programmed reduction (TPR) test, CO pulse adsorption test, and CO in-situ diffuse reflectance infrared Fourier transform spectroscopy (CO in situ DRIFTS). Results show that Pt/Al2O3 catalyst calcined in 1vol% H2/N2 atmosphere exhibits the best catalytic oxidation performance for CO and C3H6, because of the generation of numerous small-sized and highly dispersed Pt nanoparticles caused by the reducing calcination atmosphere."/>