Catalyst and process for deoxygenation and conversion of bio-derived feedstocks

Patent metadata

Field	Value
Publication number	US-2016108322-A1
Application number	US-201514886150-A
Country	US
Kind code	A1
Filing date	Oct 19, 2015
Priority date	Oct 21, 2014
Publication date	Apr 21, 2016
Grant date	—

Abstract

A catalyst and process for the deoxygenation and conversion of bio-derived feedstocks. The catalyst comprises a silica-alumina support having specifically defined physical properties and a molybdenum component but a material absence of nickel. The process involves the processing of a bio-derived feedstock having an oxygen content to yield a conversion product having an exceptional distillation profile and physical properties and a substantially reduced oxygen content.

First claim

1 . A catalyst useful in the deoxygenation and conversion of bio-derived feedstocks, wherein said catalyst comprises:
a support, comprising a silica-alumina component, wherein said support has a mean pore diameter in the range of from 40 Å to 200 Å and a nitrogen surface area in the range of from 200 m 2 /g to 500 m 2 /g; and a molybdenum component in an amount such that said catalyst comprises from 5 to 25 wt. % molybdenum, based on the total weight of said catalyst and said molybdenum as metal, regardless of its actual state, and wherein said catalyst has a material absence of nickel.

2 . A catalyst as recited in claim 1 , wherein said silica-alumina component of said support comprises from 2 to 15 wt. % of silica and from 85 wt.% to 98 wt. % alumina.

3 . A catalyst as recited in claim 1 , wherein said catalyst has a material absence of cobalt.

4 . A catalyst as recited in claim 1 , wherein said material absence of nickel is less than 3 wt. % nickel, based on the total weight of said catalyst and said nickel as metal.

5 . A catalyst as recited in claim 1 , wherein said material absence of cobalt is less than 3 wt. % cobalt, based on the total weight of said catalyst and said cobalt as metal.

6 . A catalyst as recited in claim 2 , wherein said silica-alumina component of said support comprises silica in the range of from 4 wt. % to 10 wt. %, wherein said catalyst comprises from 10 to 20 wt. % molybdenum, and wherein said mean pore diameter of said support is in the range of from 60 Å to 120 Å.

7 . A catalyst useful in the deoxygenation and conversion of bio-derived feedstocks, wherein said catalyst consists essentially of:
a silica-alumina support having from 2 to 15 wt. % of silica and from 85 wt. % to 98 wt. % alumina and a mean pore diameter in the range of from 40 A to 200 A and a nitrogen surface area in the range of from 200 m 2 /g to 500 m 2 /g; and molybdenum present in an amount in the range of from 5 to 25 wt. % molybdenum, based on the total weight of said catalyst and said molybdenum as metal, regardless of its actual state.

8 . A catalyst as recited in claim 7 , wherein said silica-alumina support has from 4 wt. % to 10 wt. % silica and from 85 wt. % to 98 wt. % alumina, and wherein said mean pore diameter of said silica-alumina support is in the range of from 60 Å to 120 Å.

9 . A catalyst as recited in claim 8 , wherein said molybdenum is present in an amount in the range of from 10 to 20 wt. %.

10 . A process for deoxygenation and conversion of a bio-derived feedstock having an oxygen content, wherein said process comprises:
contacting said bio-derived feedstock under suitable deoxygenation and conversion process conditions with a catalyst comprising a support comprising a silica-alumina component impregnated with molybdenum, wherein said support has a mean pore diameter in the range of from 40 Å to 500 Å and a nitrogen surface area in the range of from 200 m 2 /g to 500 m 2 /g, and wherein said catalyst comprises from 5 to 25 wt. % molybdenum, based on the total weight of said catalyst and molybdenum as metal, regardless of its actual state, and wherein said catalyst has a material absence of nickel and cobalt; and yielding a conversion product having a reduced oxygen content that is significantly reduced below said oxygen content of said bio-derived feedstock.

11 . A process as recited in claim 10 , wherein said bio-derived feedstock comprises molecules having a boiling temperature exceeding 1,000° F., and wherein said oxygen content of said bio-derived feedstock is in the range of from 4 wt. % to 25 wt. % of said bio-derived feedstock.

12 . A process as recited in claim 11 , wherein at least 50 wt. % of said bio-derived feedstock has a boiling temperature above 1,000° F.

13 . A process as recited in claim 12 , wherein said bio-derived feedstock comprises a substantial amount of long-chain fatty acid compounds having from 12 to 24 carbon atoms per molecule.

14 . A process as recited in claim 13 , wherein said bio-derived feedstock comprises at least 75 wt. % fatty acid compounds.

15 . A process as recited in claim 14 , wherein said reduced oxygen content is less than 1 wt. % of said conversion product.

16 . A process as recited in claim 15 , wherein greater than 50 wt. % of said conversion product has a boiling temperature of less than 1,000° F.

Assignees

• Shell Oil Co

Inventors

• Bhan Opinder Kishan

Classifications

• B01J23/28

  Molybdenum · CPC title

• C10G3/48 Primary

  further characterised by the catalyst support · CPC title

• C10G3/44

  characterised by the catalyst used · CPC title

• B01J37/08

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

• B01J37/0201

  Impregnation · CPC title