| 摘要 |
AN ADDITIVE TO ENHANCE THE ACTIVITY OF AN FCC CATALYST CONTAINING ZEOLITE AND MATRIX COMPONENTS COMRPISES ZEOLITE MICROSPHERES HAVING A NOVEL MORPHOLOGY COMPRISING A MACROPOROUS MATRIX AND CRYSTALLIZED ZEOLITE FREELY COATING THE WALLS OF THE PORES OF THE MATRIX. THE ADDITIVES FORMED FROM MICROSPHERES CONTAINING A METAKAOLIN AND KAOLIN CALCINED THROUGH ITS EXOTHERM, THE LATTER CALCINED KAOLIN BEING DERIVED FROMA KAOLIN HAVING A HIGH PORE COLUME. KAOLIN HAVING A HIGH PORE VOLUME CAN BE A PULVERIZED ULTRAFINE KAOLIN OR A KAOLIN WHICH HAS BEEN PULVERIZED TO HAVE AN INCIPIENT SLURRY POINT LESS THAN 57OLIDS.
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