The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 1989
Filed:
Jul. 14, 1986
Bruce H Winquist, Houston, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
A method of manufacture of a ZSM-5 aluminosilicate zeolite is disclosed with specific ingredients in the crystallizing gel and which must be present in certain specified molar proportions. The aqueous gel comprises colloidal silica:colloidal alumina:Na.sub.3 PO.sub.4 :KF:water in a ratio of between 20 to 1 to 50 to 1 moles of colloidal silica to colloidal alumina and between 1.8 to 2.7 moles of Na.sub.3 PO.sub.4 per mole of colloidal alumina. It is preferred that greater than 0.5 to less than 2.04 moles of KF per mole of colloidal alumina is also present in the crystallizing gel. Variance from these ingredients or the relative stoichiometry of same results in the production of ferrierite, mordenite or an amorphorous aluminosilicate.