Process for preparing zeolite A from spent cracking catalyst
AssigneeAmoco Corporation
InventorsRalph J. Bertolacini, Eugene H. Hirschberg
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Abstract
This invention provides for a method of preparing zeolite A from spent metals-contaminated cracking catalyst while concomitantly removing at least a portion of one of the contaminant and catalytic metals from the spent catalyst by contacting the spent catalyst with a solution containing an alkali metal hydroxide and a sufficient amount of sodium aluminate under hydrothermal conditions for a specified period of time to form the zeolite A.
Claims6
A method for preparaing zeolite A from spent metals-contaminated cracking catalyst comprising zeolite Y and removing at least one metal from said catalyst which comprises the steps of:
- contacting said catalyst with a solution comprising an alkali metal hydroxide and a sufficient amount of sodium aluminate to form said zeolite A under hydrothermal conditions at a pH of at least 10;
- partitioning said catalyst from said solution;
- washing said catlayst with water to remove unreacted alkali metal hydroxide, sodium aluminate, and residual contaminant metals.
Dependencies are inferred from the claim text.