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考察了磷钨酸(H3PW12O40·XH2O)、对甲基苯磺酸、浓硫酸和HY型分子筛等四种催化剂对苯酚与邻烯丙基苯酚烷基化反应的影响,结果表明磷钨酸具有较好的催化活性和选择性。在磷钨酸催化下,控制适宜的反应条件,产物产率达75%,羟值467.4。产物经分离及红外光谱、核磁共振谱(H′-NMR)等方法测定,证明主要是1,2-二(2-羟基苯基)丙烷和1-(2-羟基苯基)-2-(4-羟基苯基)丙烷两种双酚的混合物,两种化合物在混合物中比例相近。此双酚混合物可作为合成新型环氧树脂的单体
The effects of phosphotungstic acid (H3PW12O40 · XH2O), p-toluenesulfonic acid, concentrated sulfuric acid and HY zeolites on the alkylation of phenol and o-allylphenol were investigated. The results showed that phosphotungstic acid Good catalytic activity and selectivity. Under the catalysis of phosphotungstic acid, under appropriate reaction conditions, the product yield reached 75% and the hydroxyl value was 467.4. The product was isolated and characterized by IR, H-NMR and other methods and proved to be mainly 1,2-bis (2-hydroxyphenyl) propane and 1- (2-hydroxyphenyl) -2- 4-hydroxyphenyl) propane A mixture of two bisphenols, with similar ratios of the two compounds in the mixture. This bisphenol mixture can be used as a monomer for the synthesis of new epoxy resins