Viscosity modifiers for decreasing the viscosity of ionic liquids

Patent metadata

Field	Value
Publication number	US-10023508-B2
Application number	US-201414568698-A
Country	US
Kind code	B2
Filing date	Dec 12, 2014
Priority date	Dec 12, 2014
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A process utilizing an ionic liquid is described. The process includes contacting a hydrocarbon feed with an ionic liquid component, the ionic liquid component comprising a mixture of a first ionic liquid and a viscosity modifier, wherein a viscosity of the ionic liquid component is at least about 10% less than a viscosity of the first ionic liquid.

First claim

What is claimed is:

1. A process utilizing an ionic liquid comprising: contacting a hydrocarbon feed with an ionic liquid component has a kinematic viscosity in a range of about 50 to about 250 centistokes at 25° C., the ionic liquid component comprising a mixture of a first unsupported ionic liquid comprising tributylhexylphosphonium heptachloroaluminate and a viscosity modifier comprising dichloromethane wherein the viscosity modifier comprises about 15 mol % to about 40 mol % of the ionic liquid component, wherein a viscosity of the ionic liquid component is at least about 10% less than a viscosity of the first ionic liquid, wherein the ionic liquid component is a catalyst in an alkylation process of isoparaffins and olefins, wherein the ionic liquid component is at a temperature of 38° C. or lower.

2. The process of claim 1 wherein the ionic liquid component has a kinematic viscosity in a range of about 25 to about 70 centistokes at 38° C.

3. The process of claim 1 wherein the viscosity modifier is more soluble in the ionic liquid phase than in the hydrocarbon feed.

4. The process of claim 1 wherein the viscosity modifier is present in an amount of less than 40 mol % of the ionic liquid component.

5. A process utilizing an ionic liquid comprising: contacting a hydrocarbon feed with an ionic liquid component has a kinematic viscosity in a range of about 50 to about 250 centistokes at 25° C. the ionic liquid component comprising a mixture of a first ionic liquid comprising tributylhexylphosphonium heptachloroaluminate and a viscosity modifier, wherein a viscosity of the ionic liquid component is at least about 10% less than a viscosity of the first ionic liquid, wherein the viscosity modifier comprises dichloromethane and a second ionic liquid having a viscosity at least 10% less than a viscosity of the first ionic liquid, wherein the viscosity modifier is present in an amount of less than 40 mol %, wherein the viscosity modifier is not reactive with the hydrocarbon feed or the first ionic liquid, wherein the ionic liquid component is a catalyst in an alkylation process of isoparaffins with olefins wherein the ionic liquid component is at a temperature of 38° C. or lower.

6. The process of claim 5 wherein the second ionic liquid comprises a pyridinium based ionic liquid, an imidazolium based ionic liquid, a trialkyl or tetraalkyl ammonium based ionic liquid, a pyrrolidinium based ionic liquid, and a lactamium based ionic liquid.

Assignees

• Uop Llc

Inventors

• Buchbinder Avram M
• Broderick Erin M
• Martins Susie C
• Bhattacharyya Alakananda
• Smith Stuart

Classifications

• C07C2531/02

  containing organic compounds or metal hydrides · CPC title

• B01J31/0277

  comprising ionic liquids, as components in catalyst systems or catalysts per se, the ionic liquid compounds being used in the molten state at the respective reaction temperature · CPC title

• C07C2/60 Primary

  with halides · CPC title

• C07C2527/125

  Compounds comprising a halogen and scandium, yttrium, aluminium, gallium, indium or thallium · CPC title

• B01J2231/32

  Addition reactions to C=C or C-C triple bonds · CPC title