Heterogenized catalyst for acetylene dimerization

Patent metadata

Field	Value
Publication number	US-10668455-B2
Application number	US-201816221316-A
Country	US
Kind code	B2
Filing date	Dec 14, 2018
Priority date	Jun 22, 2016
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

A catalyst and a process for using the catalyst are presented. The catalyst is a heterogeneous catalyst and includes active metal halides bonded to functional groups. The functional groups are bonded to a polymeric backbone to form the structure supporting the catalyst. The catalyst is useful for the dimerization of acetylene to convert the acetylene to a larger hydrocarbon, and in particular to dimerize acetylene to vinylacetylene.

First claim

The invention claimed is:

1. A process for the production of 1,3 butadiene, comprising:
dimerizing a first process stream comprising acetylene, under dimerization conditions, in the presence of a catalyst comprising a polymer backbone with a plurality of functional groups affixed to the polymer backbone wherein the functional groups have a positive charge and a charge balancing anion, and at least one of the anions is ion exchanged with a metal halide, that is converted to anion form, to generate a polymer with metal halide groups ionically bonded to the functional groups, to generate a second process stream comprising vinylacetylene, wherein the functional groups are selected from the group consisting of amines, phosphines and mixtures thereof;
hydrogenating the vinylacetylene in the second process stream to generate a third process stream comprising 1,3 butadiene.

2. The process of claim 1 wherein the metal is selected from the group consisting of copper, iron, silver and mixtures thereof.

3. The process of claim 1 wherein the hydrogenating of vinyl acetylene is performed in a reactor with a selective hydrogenation catalyst.

4. The process of claim 1 wherein the polymer backbone is selected from the group consisting of styrene, divinylbenzene, styrene-divinylbenzene co-polymer, polyethylene, polyamine-epichlorohyrdin-NH3 condensate, melamine-formaldehyde condensate, polyamine-phenol-formaldehyde condensate, and mixtures thereof.

Assignees

• Uop Llc

Inventors

• Voskoboynikov Timur V
• Bhattacharyya Alakananda
• Adonin Nikolay Y
• Timofeeva Mariya N
• Prikhodko Sergey A
• Parmon Valentin N

Classifications

• B01J31/08 Primary

  Ion-exchange resins · CPC title

• B01J47/016

  Modification or after-treatment of ion-exchangers · CPC title

• B01J27/236

  Hydroxy carbonates · CPC title

• B01J27/13

  Platinum group metals · CPC title

• B01J23/72

  Copper · CPC title