Abstract
Zeolites are used up to now in industrially important processes such as petro-refinary and petrochemistry. From now, other functions must be required to meet crisis of resources and materials, and to meet a demand on fine chemistry or some other new fields. Here, we focus on basicity of the material, contrary to the conventional acidic character of zeolites. A vast number of acid catalyses has been developed, while little is known on base catalyses. At our preliminary investigation step, zeolite-supported base oxides, -ion exchanged alkali, and a zeolite having nitrogen substituted with framework oxygen were adopted as candidates for base-catalyzed reaction such as Knoevenagel condensation. We found that nitrogen in the framework showed milder basicity than that induced by alkaline oxide or ion, and that high selectivity for condensed products was given.
