| abstract |
The invention relates to zirconium and / or hafnium-containing zeolites, a process for their preparation and their use. For the preparation, a mixture of silicon, aluminum, sodium, potassium and choline compounds, water and zirconium and / or hafnium compounds is produced in specified proportions and heated in a closed vessel. The zeolites are used as catalysts in the production of C2-C4 olefins from methanol. |