以四种不同来源的Ａｌ２Ｏ３为载体，采用相同浓度的Ｈ２ＰｔＣｌ６·６Ｈ２Ｏ水溶液浸渍方法制取了四种Ｐｔ／Ａｌ２Ｏ３催化剂．同时使用程序升温还原技术，程序升温脱附技术以及微型脉冲催化色谱技术对其催化剂性能进行表征．实验结果表明，四种催化剂的ＴＰＲ谱，Ｈ２－ＴＰＤ谱以及正己烷脱氢环化活性和选择性是有差别的 Four kinds of Pt / Al2O3 catalysts were prepared by impregnation with the same concentration of H2PtCl6 · 6H2O aqueous solution from four different sources of Al2O3. At the same time, the catalytic performance of the catalyst was characterized by temperature programmed reduction, temperature programmed desorption and micro-pulse catalytic chromatography. The experimental results show that the four catalysts have different TPR spectra, H2-TPD spectra and n-hexane dehydrocyclization activity and selectivity