Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – And additional al or si containing component
Patent
1988-10-20
1990-10-23
Dees, Carl F.
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
And additional al or si containing component
502 68, 423328, B01J 2908, B01J 2116, C01B 3334
Patent
active
049652338
ABSTRACT:
A novel improved process for maunfacturing fluid cracking cataylsts by an in situ procedure. Sodium zeolite Y (synthetic faujasite) is crystallized in pores of a physical mixture of preformed, highly porous precursor microspheres, one portion of the microspheres is composed of metakaolin and the other portion of the mixture of microspheres being composed of kaolin calcined to undergo the exotherm (the latter somethimes being referred to as spinel calcined clay or simply spinel). In particular, by the present invention the precursor microspheres have enhanced porosity (e.g., 0.3 to 0.5 cc/g as measured by mercury porosimetry) and are obtained by spray drying a slurry of hydrous (raw) kaolin clay which is characterized by presence of a major amount of large (plus 2 micron) kaolin stacks, which when spray dried, result in microspheres having the desired high content of macropores in which zeolite Y can grow. Relatively high levels of metakaolin containing microspheres are used in the synthesis.
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CSIR Report CENG 210--"Microspheres Containing Kaolinite NaY Zeolite Synthesized in South Africa".
CSIR Report CENG 262 "Control of the Concentration NaY Zeolite Synthesized in Fired Kaolinite Microspheres".
Product Data Sheet From Supplier of Serina Kaolin.
Dees Carl F.
Engelhard Corporation
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