以NaY沸石为原料,采用SiCl_4同晶取代脱铝技术,制得了硅铝比变化范围较宽的八面沸石,所得样品结晶度高且系列性好。用XRD测定沸石的晶相、晶胞参数α_0和峰相对强度,以IR测定沸石的骨架振动谱带。系统地研究了制备条件对脱铝产品性能的影响,并对取代过程的化学原理进行了探讨。 Taking NaY zeolite as raw material and SiCl4 isomorphous substitution dealumination technique, a faujasite zeolite with a wide range of Si / Al ratio was obtained. The obtained sample has high crystallinity and good series. The crystalline phase of the zeolite, unit cell parameters α_0 and the relative intensities of the zeolite were measured by XRD. The framework vibrational bands of the zeolite were determined by IR. The effects of preparation conditions on the properties of the dealumination were studied systematically. The chemical principles of the substitution process were also discussed.