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含有两种不同氧化物的二元氧化物,其物理和化学性质往往明显不同于其单组分氧化物,这在理论上是有意义的.目前已有两种类型的二元氧化物用于工业.第一类是制成混合氧化物,两组分在体相中均匀分散,这些二元氧化物(如SiO_2-Al_2O_3)以其酸性著称,并主要用作酸性催化剂或双功能担体.第二类二元氧化物是一种表面相氧化物,我们采用这个词是指将一种氧化物以单层或少于单层覆盖在另一氧化物表面上的物质.Murrell和Yates报道的氧化钛-氧化硅系统就是一个例子.
Binary oxides containing two different oxides, whose physical and chemical properties often differ significantly from their one-component oxides, are theoretically significant.Now two types of binary oxides have been used Industry The first category is made of mixed oxides, the two components evenly dispersed in the bulk phase, these binary oxides (such as SiO 2 -Al 2 O 3) known for its acidity, and mainly used as acidic catalyst or bifunctional support. The second type of binary oxide is a surface-phase oxide. By the term we refer to a material that covers an oxide on the surface of another oxide in a single layer or less than a single layer. Oxidation reported by Murrell and Yates The titanium-silicon oxide system is an example.