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Nafion H树脂是杜邦公司在六十年代末研究成功的一种生氟磺酸型树脂,它具有如下的化学结构:用全氟磺酸树脂所制成的离子交换膜,在电解工业上,燃料电池方面已经成功地应用。近年来,在有机合成中,作为酸性催化剂,Nafion H树脂也开始受到注意。Nafion H树脂具有全氟型的结构,化学稳定性好,不受酸、碱、氧化剂的腐蚀,被誉为带有交换基团的塑料王。在它的骨架上全部为氟原子,所以酸性极强,是引人注目的固体酸性催化剂。用固体酸性催化剂代替无机的液体酸或腐蚀性很强的三氯化铝是有很多优点,首先是便于分
Nafion H resin is a biofurst sulfonic acid resin successfully researched by DuPont in the late 1960s. It has the following chemical structure: ion exchange membrane made of perfluorosulfonic acid resin, in electrolysis industry, fuel The battery has been successfully applied. In recent years, Nafion H resin has also attracted attention as an acidic catalyst in organic synthesis. Nafion H resin with a perfluorinated structure, chemical stability, free from acid, alkali, oxidant corrosion, known as the exchange of the plastic group with the king. In its skeleton, all fluorine atoms, so extremely acidic, is a remarkable solid acid catalyst. The use of solid acidic catalysts instead of inorganic liquid acids or highly corrosive aluminum trichloride has many advantages,