| abstract |
To produce titanium, zirconium and / or hafnium-containing zeolites, for example titanium, zirconium and / or hafnium compounds are mixed with aluminum, silicon, sodium, potassium compounds and water and an organic ammonium compound in specified proportions and in a closed mixture The vessel is heated. The zeolites are used as catalysts in the production of C 2 -C 4 olefins from methanol. |