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. 01, 1994
Filed:
Aug. 09, 1993
Nelson P Martinez, Los Salias, VE;
Juan A Lujano, Los Teques, VE;
Nieves Alvarez, Caracas, VE;
Francisco Machado, Caracas, VE;
Carmen M Lopez, San Antonio de los Altos, VE;
Intevep, S.A., Caracas, VE;
Abstract
A zeolitic material with a crystalline structure of MFI type has a ratio of silica to alumina which is lower than 26, and is hydrothermally prepared without organic template reagents or seeding procedures. Crystalline structure is obtained by forming a mixture of a silicon dioxide source, an alkali metal hydroxide, an aluminum source and water, all reactants with the following molar ratios: ##EQU1## where M is an alkali metal, and reacting the mixture at a temperature from 160.degree. to 180.degree. C. for 40-80 hours. The material is characterized by X-ray diffraction, and has good cracking activity and improved selectivity for gasoline octanes.