SILICA COMPOSITE, METHOD FOR PRODUCING THE SAME, AND METHOD FOR PRODUCING PROPYLENE USING THE SILICA COMPOSITE

摘要

THE PRESENT INVENTION PROVIDES A METHOD FOR PRODUCING A SILICA COMPOSITE BY THE STEPS OF: PREPARING A RAW MATERIAL MIXTURE CONTAINING SILICA AND ZEOLITE; DRYING THE RAW MATERIAL MIXTURE TO OBTAIN A DRIED PRODUCT; AND CALCINING THE DRIED PRODUCT, WHEREIN THE METHOD COMPRISING THE STEP OF ALLOWING THE RAW MATERIAL MIXTURE TO CONTAIN PHOSPHORIC ACID AND/OR PHOSPHATE OR BRINGING A SOLUTION OF PHOSPHORIC ACID AND/OR PHOSPHATE INTO CONTACT WITH THE ZEOLITE AND/OR THE DRIED PRODUCT, OR A COMBINATION THEREOF TO THEREBY ADJUST A PHOSPHORUS CONTENT IN THE SILICA COMPOSITE TO 0.01 TO 1.0% BY MASS BASED ON THE TOTAL MASS OF THE SILICA COMPOSITE. FIGURE 5