	US 11,951,466 B2
	Process for regenerating a catalyst for the hydroformylation of olefins in the gas phase
Robert Franke, Marl (DE); Linda Arsenjuk, Dortmund (DE); Jessika Schüller, Gunderath (DE); Frank Stenger, Alzenau (DE); Vinzenz Fleischer, Marl (DE); and Marc Oliver Kristen, Haltern am See (DE)
Assigned to EVONIK OXENO GMBH & CO. KG, Marl (DE)
Filed by Evonik Oxeno GmbH & Co. KG, Marl (DE)
Filed on Apr. 8, 2022, as Appl. No. 17/716,170.
Claims priority of application No. 21174300 (EP), filed on May 18, 2021.
Prior Publication US 2022/0379294 A1, Dec. 1, 2022
Int. Cl. B01J 31/16 (2006.01); B01J 31/40 (2006.01); B01J 38/50 (2006.01)

CPC B01J 38/50 (2013.01)

20 Claims

1. A process for regenerating a hydroformylation catalyst consisting of a heterogenized catalyst system, in a vessel,

wherein the catalyst system comprises a metal of Group 8 or 9 of the Periodic Table of the Elements and at least one organic phosphorus-containing ligand and is present heterogenized on a support, wherein the support consists of a porous ceramic material and is in the form of granules or in the form of a monolith,

wherein the process comprises at least the following steps:

a) filling the vessel with a solution consisting of the phosphorus-containing ligand and a solvent, and allowing it to stand for at least one hour, and

b) discharging the solution from the vessel.