用2次离子交换和2次焙烧的方法制备了CeY、AgY和CuY分子筛,并用X射线衍射仪(XRD)、比表面分析仪(BET)、电感耦合等离子体质谱(ICP-MS)对其进行了表征。研究了噻吩、苯、正辛烷、1-辛烯在NaY、CeY、AgY和CuY上的吸附等温线,并用Langmuir方程进行了拟合。结果表明,29℃时噻吩、苯、正辛烷在NaY、CeY、AgY和CuY上的吸附等温线都能被Langmuir方程很好的拟合;29℃时1-辛烯分别在NaY、AgY和CuY上的吸附等温线也能被Langmuir方程很好的拟合;1-辛烯在CeY上的吸附等温线偏离Langmuir方程。
CeY,AgY and CuY were prepared by two times of liquid ion-exchange and characterized by XRD,BET and ICP-MS.The isotherms of thiophene,benzene,octane,1-octene were determined by an intelligent gravimetric analyzer and fitted by Langmuir equation.The results show that the isotherms of thiophene,benzene,octane over NaY,CeY,CuY and AgY at 29 ℃ can be well fitted by Langmuir equation,and the isotherms of 1-octene over NaY,CuY and AgY at 29 ℃ also can be fitted by Langmuir equation,while,the isotherms of 1-octene over CeY at 29 ℃ are deviated from Langmuir equation.