Amorphous calcium phosphate catalyst for use in production of 1,3-butadiene and methyl ethyl ketone from 2,3-butanediol, and method of preparing the same

Patent metadata

Field	Value
Publication number	US-9511357-B2
Application number	US-201514600677-A
Country	US
Kind code	B2
Filing date	Jan 20, 2015
Priority date	Nov 27, 2014
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

Disclosed are an amorphous calcium phosphate catalyst for use in production of 1,3-butadiene and methyl ethyl ketone from 2,3-butanediol, a preparation method thereof, and a method of producing 1,3-butadiene and methyl ethyl ketone from 2,3-butanediol using the amorphous calcium phosphate catalyst.

First claim

What is claimed is:

1. A method of preparing an amorphous calcium phosphate catalyst for use in production of 1,3-butadiene and methyl ethyl ketone from 2,3-butanediol, comprising:
(a) reacting a phosphoric acid-containing solution with ammonium hydroxide, thus preparing a phosphoric acid-alkali aqueous solution;
(b) adding the phosphoric acid-alkali aqueous solution with a calcium precursor aqueous solution, thus preparing a calcium phosphate slurry, wherein preparing the calcium phosphate slurry in (b) is performed at a pH of 6-10; and
(c) thermally treating the slurry, thus obtaining an amorphous calcium phosphate catalyst used for 1,3-butadiene and methyl ethyl ketone from 2,3-butanediol.

2. The method of claim 1 , wherein in (a), the phosphoric acid-containing solution comprises at least one selected from the group consisting of orthophosphoric acid (H 3 PO 4 ), pyrophosphoric acid (H 4 P 2 O 7 ), tripolyphosphoric acid (H 5 P 3 O 10 ), and tetrapolyphosphoric acid (H 6 P 4 O 13 ).

3. The method of claim 1 , wherein in (b), a Ca/P ratio is 1.20-1.67.

4. The method of claim 1 , wherein in (b), a Ca/P ratio is 1.20-1.30.

5. The method of claim 1 , wherein in (b), the calcium precursor comprises at least one selected from the group consisting of calcium acetate (Ca(CH 3 COO) 2 ), calcium nitrate (Ca(NO 3 ) 2 ), and calcium chloride (CaCl 2 ).

6. The method of claim 1 , wherein thermally treating in (c) is performed at 400-600° C. for 1-10 hr.

7. The method of claim 1 , further comprising producing 1,3-butadiene and methyl ethyl ketone from 2,3-butanediol using the amorphous calcium phosphate catalyst produced in step (c).

Assignees

• Sk Innovation Co Ltd
• Sk Global Chemical Co Ltd

Inventors

• Kim Hee Soo
• Park Dong Ryul
• Lee Ho Won

Classifications

• C07C11/167

  1, 3-Butadiene · CPC title

• B01J27/1806 Primary

  with alkaline or alkaline earth metals · CPC title

• B01J37/08

  Heat treatment {(B01J37/0009, B01J37/0018 take precedence)} · CPC title

• C01B25/322

  Preparation by neutralisation of orthophosphoric acid · CPC title

• C07C5/333

  Catalytic processes · CPC title