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:
Oct. 20, 2009
Filed:
Mar. 09, 2004
Marja Tiitta, Porvoo, FI;
Elina Harlin, Vantaa, FI;
Jaana Makkonen, Söderkulla, FI;
Narendra Kumar, Turku, FI;
Dmitry Yu Murzin, Turku, FI;
Tapio Salmi, Turku, FI;
Marja Tiitta, Porvoo, FI;
Elina Harlin, Vantaa, FI;
Jaana Makkonen, Söderkulla, FI;
Narendra Kumar, Turku, FI;
Dmitry Yu Murzin, Turku, FI;
Tapio Salmi, Turku, FI;
Neste Oil Oyj, Espoo, FI;
Abstract
The present invention relates to an active and selective zeolite catalyst having MTT structure that is useful in skeletal isomerisation of light olefins. The method for the manufacture of the zeolite catalyst having MTT structure comprises the steps of a) preparing of a gel mixture capable of forming crystalline material, and the mixture comprising sources of alkali or alkaline earth metal (M), of an oxide of a trivalent element (X), of an oxide of a tetravalent element (Y), water and a directing agent (R), and the mixture having a composition, in terms of molar ratios, within the given ranges; b) maintaining the mixture under sufficient conditions, including a temperature of from about 100° C. to about 250° C., under dynamic mode of stirring until crystals of the material are formed, recovering the material; and c) removing the directing agent (R) partly or totally with a calcination procedure.