US 9,822,053 B2 · Single step conversion of N-butyraldehyde to 2-ethylhexanal

Abstract

Disclosed is a method of making and using a titania supported palladium catalyst for the single step synthesis of 2-ethylhexanal from a feed of n-butyraldehyde. This titania supported palladium catalyst demonstrates high n-butyraldehyde conversion but also produces 2-ethylhexanal in an appreciable yield with maintained activity between runs. This method provides a single step synthesis of 2-ethylhexanal from n-butyraldehyde with a catalyst that can be regenerated that provides cleaner downstream separations relative to the traditional caustic route.

Claims13

Dependent claims

A method for a single step synthesis of 2-ethylhexanal comprising:

contacting n-butyraldehyde and a hydrogen gas with a palladium on titania eggshell type catalyst under vapor-phase condensation conditions to obtain a reaction product comprising 2-ethylhexanal;
wherein the palladium eggshell catalyst comprises a palladium shell deposited on a titania support comprising nano-sized particles of palladium having a diameter less than about 10 nanometers;
and
wherein the palladium shell deposited on the titania support is concentrated within about 300 micrometers of the palladium eggshell type catalyst's exterior surface.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

15/009,098Filed 28 Jan 2016

Published

US 2017/0217866 A13 Aug 2017

Granted

21 Nov 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

C07C 45/72
By increase in the number of carbon atoms: by reaction of compounds containing >C = O groups with the same or other compounds containing >C = O groups
B01J 21/063
Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof: titanium; Oxides or hydroxides thereof
B01J 23/44
Of the platinum group metals: palladium
B01J 23/96
Regeneration or reactivation: of catalysts comprising metals, oxides or hydroxides of the noble metals

Single step conversion of N-butyraldehyde to 2-ethylhexanal

Life of this patent

Single step conversion of N-butyraldehyde to 2-ethylhexanal

Life of this patent

Abstract

Claims13