作为催化剂或其载体广泛使用的硅胶、沸石和氧化铝等物质,由于具有不同微孔结构和比表面积,其表面含有一定量的固体酸,因此不仅能够起到承载和分散催化活性组分,提高活性组分的有效表面积的作用,而且还能给催化剂提供酸性中心,能与活性组 Silica gel, zeolite and alumina, which are widely used as catalysts or carriers, contain a certain amount of solid acid on the surface due to their different microporous structure and specific surface area. Therefore, they not only can be used to carry and disperse catalytically active components, Active component of the effective surface area of ​​the role, but also to provide acidic sites for the catalyst, with the active group