Bi-Component Catalyst And Method For Dehydrating Lactic Acid To Acrylic Acid

Patent metadata

Field	Value
Publication number	US-2016264505-A1
Application number	US-201615067211-A
Country	US
Kind code	A1
Filing date	Mar 11, 2016
Priority date	Mar 13, 2015
Publication date	Sep 15, 2016
Grant date	—

Abstract

Bicomponent catalysts and methods for making bio-based acrylic acid, acrylic acid derivatives, or mixtures thereof from lactic acid, lactic acid derivatives, or mixtures thereof are provided.

First claim

What is claimed is:

1 . A method of making acrylic acid, acrylic acid derivatives, or mixtures thereof comprising contacting a stream comprising lactic acid, lactic acid derivatives, or mixtures thereof with a bicomponent catalyst comprising an HO-Re(VII)=O moiety and a compound having an oxophilic metal.

2 . The method of claim 1 , wherein said HO-Re(VII)=O moiety comprises perrhenic acid.

3 . The method of claim 1 , wherein said oxophilic metal is selected from the group consisting of Mg, Ca, Sr, Ba, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W.

4 . The method of claim 1 , wherein said compound having an oxophilic metal is selected from the group consisting of oxophilic metal phosphate, oxophilic metal sulfate, oxophilic metal oxide, and mixtures thereof.

5 . The method of claim 4 , wherein said oxophilic metal phosphate is selected from the group consisting of M 2 P 2 O 7 , M 3 (PO 4 ) 2, MHPO 4 , M(H 2 PO 4 ) 2 , and mixtures thereof; and wherein M is selected from the group consisting of Be, Mg, Ca, Sr, Ba, and mixtures thereof.

6 . The method of claim 4 , wherein said oxophilic metal oxide is selected from the group consisting of Nb 2 O 5 , LiONbO 2 , Ta 2 O 5 , and mixtures thereof.

7 . The method of claim 1 , wherein said contacting is carried out at a temperature between about 180° C. and about 250° C.

8 . The method of claim 7 , wherein said temperature is about 200° C.

9 . The method of claim 1 , wherein said stream is gaseous.

10 . The method of claim 1 , wherein said stream is liquid.

11 . The method of claim 1 , wherein the conversion of said lactic acid, lactic acid derivatives, or mixtures thereof is at least about 50 mol %.

12 . The method of claim 11 , wherein said conversion is at least about 80 mol %.

13 . The method of claim 12 , wherein said conversion is at least about 90 mol %.

14 . The method of claim 1 , wherein the selectivity of said acrylic acid, acrylic acid derivatives, or mixtures thereof is at least about 50 mol %.

15 . The method of claim 14 , wherein said selectivity is at least about 80 mol %.

16 . The method of claim 15 , wherein said selectivity is at least about 90 mol %.

Assignees

• Procter & Gamble

Inventors

• Collias Dimitris Ioannis
• Hayes Jeffrey Charles
• Laidig William David

Classifications

• C07C51/377 Primary

  by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups {(C07C51/36 - C07C51/373 take precedence)} · CPC title

• B01J23/20

  Vanadium, niobium or tantalum · CPC title

• B01J23/00

  Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 (B01J21/16 takes precedence) · CPC title

• C07C51/347 Primary

  by reactions not involving formation of carboxyl groups · CPC title