摘要
Ⅰ. INTRODUCTIONIt is becoming more and more important to study the preparation and properties of Mo-loaded zeolite catalysts. Compared with other loading methods, the vapour phase adsorption of MoCl<sub>5</sub> can produce the catalyst which has a larger amount and uniform valence of molybdenum loaded, without any loss on the crystallinity of zeolites.
