CAJ | 학술논문

在硅烷偶联剂(3-环氧乙基甲氧基丙基)三甲氧基硅烷( GPTMS)作用下合成了多级孔结构ZSM-5沸石,采用X射线粉末衍射仪、扫描电镜、透射电镜及N2 吸脱附实验表征了合成样品的结构和形貌,并研究了间甲酚和对甲酚在合成的多级孔结构ZSM-5上的液相吸附行为.结果表明,合成的多级孔结构ZSM-5沸石具有丰富的介孔结构,在保持吸附量和对位选择性的情况下大幅提高了间甲酚和对甲酚在ZSM-5上的吸附速率.在此基础上对合成的多级孔结构ZSM-5进行了离子交换改性,实验结果表明,钾离子交换可提高ZSM-5的对甲酚选择性.
재규완우련제(3-배양을기갑양기병기)삼갑양기규완( GPTMS)작용하합성료다급공결구ZSM-5비석,채용X사선분말연사의、소묘전경、투사전경급N2 흡탈부실험표정료합성양품적결구화형모,병연구료간갑분화대갑분재합성적다급공결구ZSM-5상적액상흡부행위.결과표명,합성적다급공결구ZSM-5비석구유봉부적개공결구,재보지흡부량화대위선택성적정황하대폭제고료간갑분화대갑분재ZSM-5상적흡부속솔.재차기출상대합성적다급공결구ZSM-5진행료리자교환개성,실험결과표명,갑리자교환가제고ZSM-5적대갑분선택성.
Hierarchical ZSM-5 zeolites was synthesized with the aid of 3-glycidoxypropyltrimethoxysilane ( GPTMS).The structure and morphology of the synthesized hierarchical ZSM-5 were characterized by XRD , SEM, TEM and N2 adsorption-desorption techniques.The liquid phase adsorption behaviors of metacresol and paracresol in the prepared hierarchical ZSM-5 samples were investigated.The results indicated that due to the presence of abundent meospores in the synthesized hierarchical ZSM-5 crystals , the adsorption rate was greatly improved for both metacresol and paracresol without sacrificing the adsorption capacity and para selectivity. Futhermore, the synthesized hierarchial ZSM-5 was modified by ion-exchagement , suggested that the modifica-tion of ZSM-5 with K ion could improve the para selectivity.