ZHAO Li, LI Xiaohui, SUN Peng, LIU Xinghai, SHI Lei*, SUN Qi
(Institute of Chemistry for Functionalized Materials, Liaoning Normal University, Dlian 116029, China)
Abstract: The CoO/SiO2-Al2O3 doped with Na2O or K2O for the vapor-phase synthesis of 1-phenylazepane from aniline and 1,6-hexanediol was studied. The catalysts were characterized by XRD, TEM, H2-TPR and NH3-TPD. The results indicated that Na2O not only increased the amount of weak acid sites of the catalyst, but also decreased the amount of the middle-strong acid sites, as a result, Na2O improved the selectivity of the catalyst. The addition of K2O took disadvantage of the synthesis of 1-phenylazepane for the amount of weak acid sites decreased remarkably and the CoO particles were sintered easily during the reaction.
Key words: Na2O; K2O; CoO/SiO2-Al2O3; 1-Phenylazepane; Vapor-phase synthesis
E-mail: shilei515@hotmail.com
Journal of Molecular Catalysis, Vol. 26, Issue 4, 2012,340-346
