Solid base catalyst compositions useful in removal of oxidized sulfur compounds and method for making solid base catalyst compositions

Patent metadata

Field	Value
Publication number	US-2016107142-A1
Application number	US-201514984391-A
Country	US
Kind code	A1
Filing date	Dec 30, 2015
Priority date	Jul 31, 2011
Publication date	Apr 21, 2016
Grant date	—

Abstract

The process provided herein is concerned with disposal of oxidized sulfur compounds formed by oxidative desulfurization. The process uses solid base catalyst in the presence of a caustic solution or solid base catalyst pretreated with a base and eliminates the need to separate the sulfones from the hydrocarbon streams and recover the hydrocarbons.

First claim

1 - 16 . (canceled)

17 . A process for manufacturing a solid base catalyst comprising
providing solid base catalyst composition including
a layered double hydroxide of the general formula (I)
ZnAl 2 O 4 .x(ZnO).y(Al 2 O 3 )   (I)

wherein x and y are independently between 0 and 2, and
wherein the total proportion of ZnAl 2 O 4 in the formula (I) is at least 10 percent by weight;

loading the solid base catalyst composition in a reactor; heating the reactor to an effective temperature; and passing a liquid caustic solution over the solid base catalyst in the reactor for a period of time sufficient to impart alkaline quality to the solid base catalyst.

18 . The process as in claim 17 , wherein the effective temperature is in the range of from about 250° C. to about 350° C.

19 . The process as in claim 17 , wherein the liquid caustic solution is sodium hydroxide having a concentration in the range of from about 0.25 to about 7 moles/liters of solid base catalyst.

20 . The process as in claim 17 , wherein the liquid caustic solution is passed over the solid base catalyst composition at a liquid hourly space velocity in the range of from 0.1 h −1 to 10 h −1 .

21 . The process as in claim 17 , wherein the liquid caustic solution is passed. over the solid base catalyst composition at a liquid hourly space velocity in the range of from 0.5 h −1 to 2 h −1 .

22 - 25 . (canceled)

26 . A solid base catalyst composition comprising
a layered double hydroxide of the general formula (I)
ZnAl 2 O 4 .x(ZnO).y(Al 2 O 3 )   (I)

wherein x and y are independently between 0 and 2, and
wherein the total proportion of ZnAl 2 O 4 in the formula (I) is at least 10 percent by weight;
wherein the layered double hydroxide has been alkaline treated by a liquid caustic solution.

Assignees

• Saudi Arabian Oil Co

Inventors

• Koseoglu Omer Refa
• Bourane Abdennour

Classifications

• C10G27/04 Primary

  with oxygen or compounds generating oxygen · CPC title

• C10G29/04

  Metals, or metals deposited on a carrier · CPC title

• B01J23/06 Primary

  of zinc, cadmium or mercury · CPC title

• B01J23/007 Primary

  Mixed salts · CPC title

• B01J37/06

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