METHOD FOR PREPARING A CATALYST, CATALYST AND USE OF CATALYST

The invention relates to a method for preparing a catalyst, wherein a catalyst precursor is coated with an ALD-coating such that Al2O3-layer is arranged on the surface of the catalyst precursor to form the catalyst, the formed catalyst is treated by a thermal treatment in which temperature is increa...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Eskelinen, Patrik, Heikkinen, Niko, Reinikainen, Matti, Kaisalo, Noora, Putkonen, Matti
Format:	Patent
Sprache:	eng ; fin ; swe
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to a method for preparing a catalyst, wherein a catalyst precursor is coated with an ALD-coating such that Al2O3-layer is arranged on the surface of the catalyst precursor to form the catalyst, the formed catalyst is treated by a thermal treatment in which temperature is increased in presence of nitrogen, and the catalyst is cooled after the thermal treatment in presence of nitrogen stream. Further, the invention relates to the catalyst and the use of the catalyst. Keksintö koskee menetelmää katalyytin valmistamiseksi, jossa katalyytin prekursori pinnoitetaan ALD-päällystyksellä, niin että Al2O3-kerros järjestetään katalyytin prekursorin pinnalle katalyytin muodostamiseksi, muodostettu katalyytti käsitellään lämpökäsittelyllä, jossa lämpötilaa nostetaan typen läsnä ollessa, ja katalyytti jäähdytetään lämpökäsittelyn jälkeen typpivirtauksen läsnä ollessa. Lisäksi keksintö koskee katalyyttiä ja katalyytin käyttöä.