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:
Nov. 17, 1992
Filed:
Jun. 14, 1991
Applicant:
Inventor:
Mae K Rubin, Bala Cynwyd, PA (US);
Assignee:
Mobil Oil Corporation, Fairfax, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423709 ;
Abstract
A large crystal zeolite Beta having a broad range of silica-to-alumina ratios, i.e. 20.fwdarw.1000, is synthesized with a chelating agent, exemplified by a tertiary alkanolamine such as triethanolamine in the synthesis mixture along with organic directing agents such as tetraethylammonium hydroxide, tetraethylammonium bromide and tetraethylammonium fluoride. The highly silicious zeolite Beta is produced from a silica source comprising precipitated silica and high purity, high silica starter seeds.