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Pt/Al_2O_3是烃类转化反应的重要催化剂.研究Pt/Al_2O_3的活性相性质及其和反应性能之间的对应关系,在实用上和理论上都具有十分重要的意义.我们发现Pt/Al_2O_3催化剂中存在低温活性相和高温活性相,它们分别和低温吸附氢中心及高温吸附氢中心相对应,低温活性相是脱氢和氢解反应的活性部位.Menon也曾发现低温吸附氢中心和烃类氢解反应有对应关系.对重整反应最为重要的脱氢芳构化反应的活性中心问题研
Pt / Al_2O_3 is an important catalyst for hydrocarbon conversion reaction.It is of great significance both in theory and in practice to study the active phase properties of Pt / Al_2O_3 and its correspondence with the reaction performance.We find that Pt / Al_2O_3 catalyst In the presence of low-temperature active phase and high-temperature active phase, respectively, they are low-temperature hydrogen adsorption center and high temperature corresponding to the center of hydrogen adsorption, low-temperature active phase dehydrogenation and hydrogenolysis reaction active site .Menon also found low hydrogen adsorption center and hydrocarbons Hydrogenolysis reaction has the corresponding relationship. The most important for the reforming reaction dehydroaromatization reaction center of activity