β沸石催化邻苯二酚-叔丁醇烷基化反应

Alkylation of Catechol with t-Butyl Alcohol over Hβ Zeolite

考察了Hβ沸石及改性Hβ/Al2 O3 对邻苯二酚 叔丁醇烷基化反应的催化性能 ,并采用XRD和NH3 TPD方法表征了Hβ沸石及改性Hβ/Al2 O3 的酸性和结构特性 ,讨论了其酸性对催化活性及选择性的影响 .结果表明 ,Hβ沸石和Co改性的Hβ/Al2 O3 的催化性能都优于目前文献报道的最好水平 ,对催化邻苯二酚

Catalytic performance of Hβ and modified Hβ/Al 2O 3 in alkylation of catechol with tert butyl alcohol was investigated. The structure and acid properties of the catalysts were characterized by XRD and NH 3 TPD techniques. The influence of acidity of the zeolite on catalytic activity and selectivity was discussed. The results showed that the selectivity of Co β/Al 2O 3 for 4 tert butylcatechol reaches 99%, and the catechol conversion is 71%, which is the best result reported in references up to date. Hβ zeolite and Co modified Hβ/Al 2O 3 are prospective catalysts for alkylation of catechol with t butyl alcohol.