Patent Number: 8,877,667

Title: Process for regenerating a catalyst

Abstract: The invention relates to a process for regenerating catalysts containing mixed oxides from the group of alkali metal and/or alkaline earth metal oxides, aluminium oxide and silicon oxide, characterized in that the regeneration comprises the following features: i) treatment of the catalyst in situ, ii) contacting of the catalyst with water, iii) treatment of the catalyst within a temperature range from 100 to C., iv) treatment of the catalyst within a pressure range from 0.1 to 2 MPa, v) treatment of the catalyst over a period of 0.1 to 24 h, vi) treatment of the catalyst with a specific catalyst hourly space velocity of 0.1 to 100 h.sup.-1.

Inventors: Boeing; Christian (Cologne, DE), Roettger; Dirk (Cologne, DE), Bukohl; Reiner (Marl, DE), Winterberg; Markus (Datteln, DE), Maschmeyer; Dietrich (Recklinghausen, DE)

Assignee: Evonik Degussa GmbH

International Classification: B01J 38/04 (20060101); B01J 38/06 (20060101); B01J 38/02 (20060101)

Expiration Date: 2019-11-04 0:00:00