Patent EA-004067-B1 (EA)
Title: Dealuminezed catalyst support, method for producing said catalyst support and method for hydrating c2 olefins with water in the presence of a catalyst consisting of this catalyst support impregnated with acid
Inventor: SAKUTH MICHAEL
IPC: B01J37/06
Filed: 1999-07-01
Abstract: 1. Catalyst support, with an aluminium content of less than 0.3 wt.%, obtained from laminated aluminium-containing silicates by dealuminising. 2. Catalyst support according to claim 1, characterized in that having an aluminium content of less than 0.03 wt.%. 3. Catalyst support according to at least one of claims 1 or 2, characterized in that used laminated silicates are fulling clays and/or substantially has a montmorillonite structure. 4. Catalyst support according to any one of claims 1 to 3, characterized in that the catalyst support comprises a total pore volume of from 0.2 to 0.9 ml/g. 5. Catalyst support according to any one of claims 1 to 4, characterized in that the catalyst support comprises a total pore volume of from 0.6 to 0.7 ml/g. 6. Catalyst support according to any one of claims 1 to 5, characterized in that the catalyst support takes the form of a spherical body. 7. Process according to any one of claims 1 to 6, characterized in that the catalyst support takes the form of a ball. 8. Process according to any one of claims 1 to 7, characterized in that the catalyst support has a diameter of from 1 to 10 mm. 9. Process according to any one of claims 1 to 8, characterized in that the catalyst support has a diameter of from 4 to 6 mm. 10. Process according to any one of claims 1 to 9, characterized in that the catalyst support exhibits a compressive strength of at least 10 N/mm. 11. Process according to any one of claims 1 to 10, characterized in that the catalyst support exhibits a compressive strength of at least 20 N/mm. 12. Process according to any one of claims 1 to 11, characterized in that the catalyst support has partially structure similar to cristobalite. 13. Process for producing a catalyst support comprising the steps of: impregnating laminated aluminium-containing silicates with acid; treating hydrothermally; washing with acidic, basic or neutral solution; and rewashing with water. 14. Process according to claim 13, characterized in that mineral acid, especially phosphoric acid, is used as acid. 15. Process according to claims 13 or 14, characterized in that the step of treating hydrothermally is carried out at a temperature of from 160 to 300 degree C and a partial pressure of water vapour of from 4 to 80 bar abs. 16. Process according to claims 13 to 15, characterized in that the step of treating hydrothermally is carried out at a temperature of from 220 to 260 degree C and a partial pressure of water vapour of from 16 to 25 bar abs. 17. Process according to claims 13 to 16, characterized in that the catalyst support is treated hydrothermally through use as a catalyst in a hydration reaction. 18. Process according to claims 13 to 17, characterized in that washing is performed at a temperature of from 20 to 100 degree C. 19. Process according to claims 13 to 18, characterized in that washing is performed at a temperature of from 70 to 90 degree C. 20. Process according to claims 13 to 19, characterized in that washing is performed with water containing from 0 to 30 parts concentrated hydrochloric acid. 21. Process according to claims 13 to 20, characterized in that rewasheding with water is continued until the washing water is neutral. 22. Process according to any one of claims 13 to 21, characterized in that the catalyst support is cleaned by burning off adherent organic carbon-containing compounds at 300 to 1000 degree C. 23. Process for hydrating C2 or C3 olefins with water in the presence of a catalyst comprising an acid-impregnated catalyst support according to one of claims 1 to 1. 24. Process according to claim 23, characterized in that - the hydration reaction is performed in a reactor, - the molar ratio of olefin to water in the reactor is from 0.1 to 0.8, - the gas hourly space velocity is from 10 to 100 ln/min/lCat, - the catalyst contains from 5 to 60 wt.% acid and - the hydration reaction of the olefins proceeds at a temperature of from 170 to 300 degree C and at a pressure of from 20 to 200 bar abs. 25. Process according to at least one of claims 23 and 24, characterized in that the acid with which the catalyst support is impregnated is a 10 to 90 wt.% phosphoric acid. 26. Process according to claim 25, characterised in that the acid with which the catalyst support is impregnated is a 50 to 60 wt.% phosphoric acid. 27. Process according to at least one of claims 23 to 26, characterized in that the catalyst contains from 5 to 60 wt.% of acid, based on pure acid, especially mineral acid, such as phosphoric acid. 28. Process according to at least one of claims 23 to 27, characterized in that the hydration reaction for producing ethanol from ethene is performed at temperatures of from 220 to 260 degree C and at a pressure of from 60 to 80 bar. 29. Process according to at least one of claims 23 to 28, characterized in that the olefin used and the water used are introduced into the reactor in gaseous form. 30. Process according to at least one of claims 23 to 29, characterized in that acid is introduced into the reactor during the hydration reaction. 31. Process according to claim 30, characterized in that phosphoric acid is used as the acid. 32. Process according to at least one of claims 23 to 31, characterized in that the acid is injected continuously into the reactor. 33. Catalyst for hydrating olefins into alcohol, obtained by contacting the catalyst carrier with mineral acid, especially with phosphoric acid, according to any one of claims 1 to 12. 34. Catalyst for hydrating olefins into alcohol according to claim 33, comprising from 5 to 60 wt.% of acid based on pure acid. 35. Catalyst, obtained by contacting the catalyst carrier with mineral acid, especially with phosphoric acid, according to any one of claims 1 to 12.