RHODIUM-CONTAINING HETEROGENEOUS CATALYSTS FOR PROCESSES OF PRODUCING PROPANAL AND DIETHYL KETONE BY HYDROFORMYLATION OF ETHYLENE Russian patent published in 2020 - IPC B01J23/46 B01J32/00 B01J37/04 C07C45/50 C07C47/02 C07C49/04 

FIELD: manufacturing technology.

SUBSTANCE: group of inventions relates to production of heterogeneous rhodium-containing catalysts for hydroformylation of unsaturated compounds, specifically to the production of fixed rhodium complexes on the surface of hybrid materials having free amino groups, also a group of inventions relates to a method of synthesis of catalysts based on insoluble materials with modification of the surface of the substrate with phosphine ligands by direct covalent bonding and subsequent fixation of rhodium on the surface, and to a method of using heterogeneous catalysts in organic catalysis, particularly in hydroformylation of unsaturated compounds. As insoluble carrier for creation of heterogeneous catalysts hybrid materials are used, which are silica gel with surface fixed polyallyamine or polyethyeneimine; phosphine ligand is grafted onto the surface of the material, rhodium is fixed by binding it with phosphorus atoms. Heterogeneous catalysts have high activity in the hydroformylation reaction of ethylene and can be easily recovered from a mixture of liquid reagents and reaction products and are used many times without significant loss of catalytic activity. Group of inventions widens the range of catalysts used in petrochemical synthesis, particularly in hydroformylation of unsaturated compounds. Group of inventions can be used in organic and petrochemical synthesis for catalytic hydroformylation of purified ethylene, as well as ethylene contained in gas mixtures, for example, in "dry" catalytic cracking gas, without preliminary extraction of ethylene, to obtain propane or diethyl ketone. Catalysts contain 0.5–3 % rhodium by weight, have high activity in hydroformylation reaction of ethylene (conversion of substrate 80–99 % per pass), and they can be used repeatedly without loss of catalytic activity.

EFFECT: method of synthesis of heterogeneous rhodium-containing catalysts and a method of producing propane and diethyl ketone with repeated use of catalysts after separation thereof from reaction products.

5 cl, 4 dwg, 4 ex