LiNaY沸石经SiCl_4气相脱铝补硅而制得一系列高硅铝比Y沸石,用XRD,IR测定脱铝沸石的晶胞参数α_0,骨架硅铝比Si_F/Al_F,和其结构稳定性.用TG—DTA法研究其表面憎水性能.用真空重量法研究其吸附性能。结果表明随着骨架脱铝量的增加其结构稳定性和憎水性都随之增加.对极性分了的吸附能力随之下降。 LiNaY zeolite was prepared by gas phase alumino-silicification of SiCl 4 to prepare a series of high-Si / Al-Y zeolites. The unit cell parameters α 0 and the framework Si-F / Al_F of the dealuminated zeolites were determined by XRD and IR, respectively. TG-DTA method was used to study the hydrophobic properties of the surface, and its adsorption performance was studied by vacuum gravimetric method. The results show that the structural stability and hydrophobicity increase with the increase of the amount of dealumination of the framework, and the adsorption capacity to the polar fraction decreases.