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:
Dec. 31, 2002
Filed:
Apr. 14, 1997
Tuomo Suntola, Espoo, FI;
Suvi Haukka, Helsinki, FI;
Arla Kytökivi, Espoo, FI;
Eeva-Liisa Lakomaa, Espoo, FI;
Marina Lindblad, Helsinki, FI;
Jukka Hietala, Porvoo, FI;
Harri Hokkanen, Helsinki, FI;
Hilkka Knuuttila, Porvoo, FI;
Pekka Knuuttila, Porvoo, FI;
Outi Krause, Sipoo, FI;
Lars Peter Lindfors, Helsinki, FI;
Neste Oy, Espoo, FI;
Abstract
The present invention concerns a method for preparing heterogeneous catalysts. According to the method, preparation is carried out under such process conditions in which the bonding of compounds from the gas phase onto the surface of a support material is primarily determined by the properties of the support surface. The constituents contained in the reagent are then selectively bonded to the bonding sites of the support material surface, thus forming stable surface bonds. According to the invention, the number of surface-bond sites available for preparing a stable product with surface bonds is controlled by varying the reaction temperature and/or selecting a suitable reagent. The invention makes it possible to control the metal content of the end product at a predetermined level.