Method for producing aromatic compound from biomass-derived acetic acid

Patent metadata

Field	Value
Publication number	US-2016221906-A1
Application number	US-201414896141-A
Country	US
Kind code	A1
Filing date	Jun 3, 2014
Priority date	Jun 5, 2013
Publication date	Aug 4, 2016
Grant date	—

Abstract

In a specific example according to the present invention, a method is disclosed in which a catalytic reaction is used in order to convert acetic acid, which has been produced by the biological processing or physicochemical processing of biomass, into an aromatic compound constituting a raw material for a high-added-value product such as BTX and, more particularly, p-xylene.

First claim

1 - 28 . (canceled)

29 . A method for producing an aromatic compound from acetic acid, comprising:
a1) providing acetic acid; b1) converting the acetic acid into acetone; and c1) converting the acetone into an aromatic compound in presence of a ruthenium-supported niobia catalyst (Ru/Nb); wherein the ruthenium-supported niobia catalyst (Ru/Nb) contains ruthenium in an amount of 0.3 to 2.5% by weight on an elemental basis.

30 . A method for producing an aromatic compound from biomass-derived acetic acid, comprising:
a2) providing an aqueous solution containing the biomass-derived acetic acid; b2) reacting the aqueous solution containing the biomass-derived acetic acid in presence of a catalyst to give an acetone-containing aqueous solution; and c2) converting the acetone of the acetone-containing aqueous solution into an aromatic compound in presence of a ruthenium-supported niobia catalyst (Ru/Nb); and d2) separating water from the product of step c2) to recover the aromatic compound, wherein the ruthenium-supported niobia catalyst (Ru/Nb) contains ruthenium in an amount of 0.3 to 2.5% by weight on an elemental basis.

31 . The method of claim 29 , wherein the acetic acid is biomass-derived acetic acid.

32 . The method of claim 29 , wherein the ruthenium of the ruthenium-supported niobia catalyst has a particle size or crystal size of 1 to 20 nm.

33 . The method of claim 29 , wherein the niobia of the ruthenium-supported niobia catalyst is thermally treated at 300 to 1000° C.

34 . The method of claim 29 , wherein step c1) is conducted at a temperature of 250 to 400° C., a hydrogen temperature of 5 to 100 bar, and a hydrogen (H 2 )/acetone molar ratio of 0.5 to 50.

35 . The method of claim 34 , wherein step c1) is conducted at a space velocity (WHSV) of 0.1 to 10 h −1 in a continuous mode, or is conducted in presence of 0.1 to 10 g of the ruthenium-supported niobia catalyst based on 100 cc of acetone in a batch mode.

36 . The method of claim 35 , wherein the acetone is converted into acetone at a rate of at least 50% with a selectivity for aromatic compounds of at least 50% in step c1).

37 . The method of claim 36 , wherein overall selectivity for aromatic and naphthenic compounds is at least 60% in step c1), with an olefinic content of 3 wt % or less in the product of step c1).

38 . The method of claim 30 , wherein the acetic acid-containing aqueous solution of step a2) has an acetic acid concentration of 1 to 90 wt %, and the acetone-containing aqueous solution of step b2) has an acetone concentration of 1 to 90 wt %.

39 . The method of claim 30 , wherein step c2) is carried out at a temperature of 250 to 400° C., a hydrogen temperature of 5 to 100 bar, and a hydrogen (H 2 )/acetone molar ratio of 0.5 to 50.

40 . The method of claim 39 , wherein step c2) is conducted at a space velocity (WHSV) of 0.1 to 10 h −1 in a continuous mode, or is conducted in presence of 0.1 to 10 g of the ruthenium-supported niobia catalyst based on 100 cc of acetone in a batch mode.

41 . The method of claim 40 , wherein the acetone is converted into acetone at a rate of at least 50% with a selectivity for aromatic compounds of at least 50% in step c2).

Assignees

• Sk Innovation Co Ltd

Inventors

• Kim Hee Soo
• Lee Ho Won
• Lim Seon Ju
• Park Dong Ryul

Classifications

• C07C1/2076

  by a transformation in which at least one -C(=O)- moiety is eliminated · CPC title

• C07C45/54

  of compounds containing doubly bound oxygen atoms, e.g. esters · CPC title

• C07C6/126

  of more than one hydrocarbon · CPC title

• Y02P20/52

  using catalysts, e.g. selective catalysts · CPC title

• C07C2523/648

  Vanadium, niobium or tantalum · CPC title