Preparation self-bonded zeolite MCM-22 bodies by vapor-phase transport method

摘要

Self-bonded bodies of zeolite MCM-22 were prepared by vapor-phase transport method. The resultant materials were characterized by means of XRD, SEM, NH_3-TPD, BET, ~(27)Al MAS NMR, Pascal 140 and Pascal 240. It was found that the bodies, prepared by aluminosil-icate gel, had been transformed into zeolite MCM-22. The zeolite bodies that were composed of MCM-22 crystal chips avoided binder accession. The total acid sites, the specific surface area, mechanical resistance and the average pore radius of the zeolite bodies reached 1.01 × 10~(-3) mol/g, 486.82 m~2/g, 126 N/cm and 57.93 nm, respectively.