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:
Aug. 24, 1982
Filed:
Dec. 05, 1980
The British Petroleum Company Limited, London, GB;
Abstract
Crystalline aluminosilicates having a high (greater than 10:1) silica to alumina molar ratio and an X-ray diffraction pattern substantially the same as that of ZSM-5 zeolite are prepared by mixing a source of silica, a source of alumina, a source of alkali metal, water and at least one monoalkanolamine selected from monoethanolamine and monopropanolamine or their precursors, the ratio of the source of silica to the source of alumina being at least 20:1 based on the equivalent moles of silica and alumina in their respective sources, and maintaining the mixture at a temperature of about 120.degree. C. or 135.degree. C. or more for a time such that crystallization occurs. Typical crystallization conditions are a temperature in the range 120.degree. to 210.degree. C., a pressure in the range from autogenous to 400 psig and a time not less than 4 hours and up to and in excess of 7 days. The crystalline product so-produced is useful, particularly after modification such as reduction of the alkali metal content as a conversion catalyst and catalyst support.