| abstract |
The invention relates to a process for the regeneration of catalysts comprising mixed oxides from the group of alkali metals and / or alkaline earth metals, aluminum oxide and silicon oxide, characterized in that the regeneration comprises the following features: i) treatment of the catalyst in situ, ii) contacting the catalyst with water, iii) treatment of the catalyst in a temperature range of 100 to 400 ° C, iv) treatment of the catalyst in a pressure range of 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 loading of 0.1 to 100 h -1 . |