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:
Mar. 13, 1990
Filed:
Mar. 03, 1987
Applicant:
Inventors:
John P McWilliams, Woodbury, NJ (US);
Catherine T Sigal, Pennington, NJ (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
502 68 ; 502 64 ; 502 71 ;
Abstract
There is provided an improvement for making large crystallite ZSM-5 zeolites by a method comprising forming the zeolite in a medium containing a combination of tetramethylammonium and tetrapropylammonium cations. The improvement involves the addition of sodium chloride to the aqueous reaction medium to increase the uniformity of crystallite size and to increase the mean crystallite size. Also provided are catalysts comprising these ZSM-5 crystallites and processes for converting organic compounds with these catalysts.