Olefin dimers and method for producing and washing olefin dimers

Patent metadata

Field	Value
Publication number	US-9314784-B2
Application number	US-201013257838-A
Country	US
Kind code	B2
Filing date	Jan 21, 2010
Priority date	Mar 26, 2009
Publication date	Apr 19, 2016
Grant date	Apr 19, 2016

Abstract

The process for producing an olefin dimer of the present invention includes a first step of carrying out a dimerization reaction of an olefin in the presence of a solid phosphoric acid catalyst in which phosphoric acid is supported on inorganic support particles at a reaction temperature of 55 to 300° C. by introducing into a reactor an olefin-containing raw material containing water in an amount of 10 ppm by mass or more and less than the saturated water content at the reaction temperature, thereby preparing a reaction product containing an olefin dimer, a second step of washing the reaction product prepared in the first step at a temperature of 50° C. or higher using an alkaline substance-containing water adjusted to pH 8 to 13 and a third step of washing the reaction product after the alkaline washing in the second step with water at a temperature of 0 to 110° C., thereby preparing an olefin dimer.

First claim

The invention claimed is:

1. A process for producing an olefin dimer comprising:
carrying out a dimerization reaction of an olefin in the presence of a solid phosphoric acid catalyst in which phosphoric acid is supported on inorganic support particles at a reaction temperature of 55 to 300° C. by introducing into a reactor an olefin-containing raw material containing water in an amount of 10 ppm by mass or more and less than the saturated water content at the reaction temperature, thereby preparing a reaction product containing an olefin dimer,
washing the reaction product at a temperature of 80° C. or higher using an alkaline substance-containing water adjusted to pH 8 to 13, and
washing the reaction product after the alkaline washing with water at a temperature of 0 to 110° C. to remove oxygen-containing compounds selected from an alcohol, a ketone, an ether, and an ester having 3 to 7 carbon atoms, thereby preparing an olefin dimer.

2. The process according to claim 1 , wherein the solid phosphoric acid catalyst has a ratio of orthophosphoric acid to the phosphoric acid of 60% by mole or more in terms of phosphorus atoms.

3. The process according to claim 1 , wherein the inorganic support particles have an average particle size of 3.0 mm or less.

4. The process according to claim 1 , wherein the olefin-containing raw material has a water content of 100 ppm by mass or more and less than the saturated water content at a reaction temperature.

5. The process according to claim 1 , wherein the dimerization reaction is carried out in liquid phase.

6. The process according to claim 1 , wherein the reaction product is washed with water at a temperature of 0 to 50° C. to remove the oxygen-containing compounds selected from an alcohol, a ketone, an ether, and an ester having 3 to 7 carbon atoms.

7. The process according to claim 1 , wherein the olefin is a monoolefin having 3 to 7 carbon atoms.

Assignees

• Kimura Nobuhiro
• Hamamatsu Tatsuo
• Jx Nippon Oil & Energy Corp

Inventors

• Kimura Nobuhiro
• Hamamatsu Tatsuo

Classifications

• B01J27/182 Primary

  with silicon · CPC title

• B01J35/40

  characterised by dimensions, e.g. grain size (in a colloidal state B01J35/23; crystallite size B01J35/77) · CPC title

• Y02P20/52

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

• B01J37/0201

  Impregnation · CPC title

• B01J35/023 Primary

  Operations & Transport · mapped topic