取代硫酸、氢氟酸等液体酸催化剂的途径

高效固体酸催化剂无论对现有工业生产, 还是从环保考虑, 都是十分重要的。特别是对那些使用液体酸诸如H₂SO₄、HF 和A lCl₃ 等为催化剂的液相酸工艺。近年来考虑到均相和多相酸催化反应中起决定作用的酸位(中心) 之间的类似性, 根据近代均相酸催化理论, 通过对不同酸位(L 酸、B 酸、超强酸) 本质的分析, 对强酸催化剂提出了一个统一的酸结构模型。以此为依据, 可对一些强酸催化剂进行剪裁。

Routes of Substitution for Liquid Acid Catalysts

Superior solid acid catalysts are needed for existing industrial processes and for environmental considerations, especially for those using conventional liquid acids, i. e.H₂SO₄, HF,AlCl₃ etc. as catalyst s in homogeneou s system s. Recen t ly, by con sidering the similarities between acid sites (cen ters) playing decisive role in both homogeneous and heterogeneous acid catalytic processes, based on the refined theory of homogeneous acid catalysis in liquid phase, and through the analysis of the nature of different kinds of acid sites(Lewis,Bronsted and super acids) , an unique model of acid structure for superior solid acid has been proposed, and thus the tailoring of several different forms of solid acid catalysts might be allowed.