以乙二胺四乙酸二钠(EDTA)、柠檬酸、草酸、酒石酸改性制备了H-BEA,并根据XRD和NH3-TPD对沸石H-BEA进行表征.采用上述改性沸石催化4-苯基丁酸分子内付克反应合成1-萘满酮进行催化剂反应活性评价.实验结果表明,以柠檬酸改性沸石H-BEA具有较高的催化活性.进一步对催化剂用量、反应温度、反应时间等工艺条件优化得到最佳工艺条件,在最佳工艺条件下,产物1-萘满酮产率达到94.3%.
Zeolite H-BEA modified by ethylene diamine tetraacetic acid(EDTA),citric acid,oxalic acid,and tartaric acid were prepared and characterized by XRD and NH3-TPD.The catalytic performance was evaluated in the synthesis of 1-tetralone by intramolecular Friedel-Crafts reaction of 4-phenylbutyric acids.Zeolites H-BEA modified by citric acid showed high catalytic activity.In addition,the reaction conditions such as catalyst amount,reaction temperature and reaction time were examined for the optimal process conditions.Under the optimal reaction conditions,the yield for 1-tetralone was 94.3%.
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