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以紫外-可见漫反射光谱为主要手段研究了Pt-Sn/Al_2O_3体系催化剂的浸渍、热处理过程。探讨了制备过程中铂的价态和配位环境的变化以及载体所起的作用。
The impregnation and heat treatment of Pt-Sn / Al_2O_3 catalyst were studied by ultraviolet-visible diffuse reflectance spectroscopy. The change of valence state and coordination environment of platinum in the preparation process and the role played by the carrier were discussed.