安徽农业科学Issue(12)：7140-7142,3.
制备邻苯基苯酚的Cu-MgO催化剂失活研究
Studies on Deactivation of Cu-MgO Catalyst for Preparing O-phenylphenol
摘要
Abstract
[ Objective] The aim was to study micro-factors to cause the deactivation of Cu-MgO catalysts. [ Method] Cu/MgO catalysts used for the synthesis of O-phenylphenol (OPP) were prepared by the precipitation method, furthermore the catalysts were characterized by XRD, BET, H2-TPD, NH3-TPD, CO2-TPD techniques and thermo-gravimetric. [ Result] The Cu/MgO catalysts showed high activity for the synthesis of OPP. The conversion of o-cyclohexenyl cyclohexanone and yield of OPP reached its maximum of 99% and 95% , but Cu/MgO catalysts was deactivated with the reaction carried through. Characterization results showed that the deactivation may contribute to the growth of crystalline sizes of Cu and MgO, the decrease of interaction between Cu and MgO, the decrease of adsorption capacity to H2 and the change of surface acid-base properties. On the other hand, the surface carbon deposition lead to the decrease of surface area and the increase of average pore size, which may also cause the deactivation of Cu/MgO catalysts. [ Conclusion] The research result lays the foundation for studies on inhibiting the deactivation of Cu-MgO catalysts.关键词
OPP/邻苯基苯酚/Cu-MgO催化剂/失活Key words
OPP/ O-phenylphenol /Cu-MgO catalyst/ Deactivation分类
农业科技引用本文复制引用
丁洁莲,曾崇余..制备邻苯基苯酚的Cu-MgO催化剂失活研究[J].安徽农业科学,2012,(12):7140-7142,3.基金项目
江苏省重大科技成果产业化资金项目(Da2005043). （Da2005043）
