摘要
综述了硅铝酸盐类、固体超强酸、离子交换树脂、杂多酸以及无机氯化物和硫酸盐等五类固体酸催化剂在催化合成缩醛 (酮 )中的应用和研究进展。通过活性比较发现硅铝酸盐类通过增大骨架硅铝比 ,可增强酸中心强度 ,使缩醛(酮 )反应更顺利进行 ;无机盐的酸中心强度与电负性与离子半径之比的大小成一致关系 ,且酸强度越大 ,缩醛 (酮 )的催化合成越容易进行。
The article summarizes the application and research development of the five kinds of solid acids such as aluminium silicate、solid super-acid、heteropolyacid、acidic cation-exchang resin、inorganic salt in catalytic synthesis of acetals or ketals.By comparison the framework silicon-to-aluminium ratio is found to proportionate to acid-side strength in the aluminium silicate and acidity is proportional with electroneg activity to radius of cation in the inorganic salt.
