水热合成法合成ZSM-5分子筛催化合成松香甘油酯的研究

摘要

A ZSM-5 zeolite was synthesized by hydrothermal crystallization method and used for preparation of rosin glyceride from rosin and glycerin.The catalytic performance and structure of the prepared and purchased ZSM-5 zeolites were compared by the synthesizing experiments of rosin glyceride and characterizing the structure of zeolites using XRD,SEM,N2-adsorption desorption and NH3-TPD.The results showed that compared to the purchased ZSM-5 zeolite,the synthesized ZSM-5 zeolite had higher specific surface area and mesopore volume,exhibiting higher esterification rate,lower product acid value and better stability.%通过水热方法自制了一种ZSM-5分子筛催化剂,用于从松香和甘油催化合成松香甘油酯.通过合成松香甘油酯实验评价和采用XRD、SEM、N2-吸脱附和NH3-TPD等分析手段进行表征,对自制催化剂与市购的ZSM-5分子筛催化剂的催化性能和结构特点进行进行了比较.结果表明,与购买的ZSM-5分子筛相比,自制ZSM-5分子筛作催化剂具有更高的比表面积和中孔体积,合成松香甘油酯所得酯化率较高,酸值较低,稳定性高.