B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
252/2
B01J 29/06 (2006.01) B01J 29/08 (2006.01) B01J 29/18 (2006.01) B01J 29/70 (2006.01) B01J 37/10 (2006.01)
Patent
CA 2019849
ABSTRACT OF THE DISCLOSURE Crystalline aluminosilicate zeolites having increased silica to alumina mole ratios are prepared by a process wherein a conventional crys- talline aluminosilicate zeolite is treated to remove alumina from the crystal lattice. By-product non-framework amorphous alumina is then selectively removed from the zeolite either by using a blocking agent, to prevent removal of framework aluminum during a subsequent acid treatment, or by using a selective organic acid extracting agent. The invention is also directed to high silica crystal- line zeolites prepared by the present process.
Davis Stephen M.
Varnado W. Scott
Borden Ladner Gervais Llp
Davis Stephen M.
Exxon Research And Engineering Company
Varnado W. Scott
LandOfFree
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