STRUCTURE-ACTIVITY RELATIONSHIP IN ZEOLITES

In this review we will try to give an integrated view of the relation between the structure and the catalytic behaviour of zeolitic material s, covering both the compositional and the structural aspects. Due to the amount of work that has been done in this wide area of zeolite cat alysis this will, necessarily, be an incomplete although, hopefully, u nbiased work. The paper will refer, not only to the relation that can be observed with natural and as-synthesised zeolites, but also to the wide range of techniques that are currently available for the 'tuning' of the catalytic properties of zeolitic materials. A special emphasis will be placed in all the aspects concerning shape selective catalysi s, which is certainly the most striking form of a structure-activity r elationship in heterogeneous catalysis.