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:
Jan. 20, 1976
Filed:
Feb. 18, 1975
Applicant:
Inventor:
Bruce H Winquist, Houston, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423118 ; 423329 ; 2524 / ;
Abstract
Ferrierite is prepared by maintaining at a temperature from about 170.degree. to 215.degree.C an aqueous mixture of amorphous silica-alumina and sodium and potassium compounds wherein from about 65 to about 90 mol % of the alkali metal as X.sub.2 O wherein X represents Na and K originates from salts of at least one polybasic acid having a pK value greater than 10.degree. at 18.degree.C for the highest dissociation step, and the molar fraction of potassium to total sodium and potassium content is from about 10 to 45%, until ferrierite crystals are formed.