【摘要】 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。更多还原

【Abstract】 The acetalization and ketalization of various aldehydes and ketones with catechol by using HZSM-5 as catalyst were studied.The results show that HZSM-5 with n（SiO₂）/n（Al₂O₃）=40 is an efficient catalyst for the acetalization and ketalization with high conversion and selectivity under mild conditions.Thus,when molar ratio of catechol to aldehydes or ketones was 1∶1.4,catalyst amount was 3.5 g/mol catechol and reaction time was 5 h,the conversion was over 30% and selectivity was over 99.2%.更多还原