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研究了HZSM-5分子筛催化邻苯二酚与环己酮、丁酮、丙酮、丙醛、丁醛、异丁醛、戊醛、异戊醛、正己醛、正辛醛、苯甲醛、二苯甲酮等10余种醛(酮)的缩合反应。考察了反应时间、酚与醛(酮)的配比、HZSM-5分子筛用量等因素对邻苯二酚与醛(酮)反应的影响。结果表明,当n(邻苯二酚)∶n〔醛(酮)〕=1∶1.4,催化剂用量为3.5 g/mol邻苯二酚,反应5 h,选择性一般在99.2%以上,转化率也一般在30%以上,表明,HZSM-5分子筛对邻苯二酚与醛(酮)的反应有较好的催化性能。
The effects of catechol, cyclohexanone, acetone, propionaldehyde, butyraldehyde, isobutyraldehyde, pentanal, isovaleraldehyde, n-hexanal, n-octanal, benzaldehyde, Methanone more than 10 kinds of aldehydes (ketones) condensation reaction. The effects of reaction time, the ratio of phenol to aldehyde (ketone) and the amount of HZSM-5 zeolite on the reaction of catechol and aldehyde (ketone) were investigated. The results showed that when n (catechol): n (aldehyde) was 1: 1.4, the amount of catalyst was 3.5 g / mol catechol, the reaction time was 5 h, the selectivity was above 99.2% Also generally more than 30%, indicating that, HZSM-5 zeolite catechol and aldehyde (ketone) reaction has good catalytic performance.