Heterogenized catalyst for acetylene dimerization
AssigneeUop LLC
InventorsTimur V. Voskoboynikov, Alakananda Bhattacharyya, Nikolay Y. Adonin, Mariya N. Timofeeva, Sergey A. Prikhodko, Valentin N. Parmon
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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.
Claims20
A catalyst for the dimerization of acetylene under dimerization conditions comprising:
- an ion exchange resin with an exchangeable anion (hydroxide or halide ion) to form an exchanged resin including the halide;
- and
- the exchanged resin is compounded with a metal halide.
A catalyst comprising:
- a polymer backbone with a plurality of functional groups, wherein the functional groups are selected phosphonium chlorides and amine chlorides;
- and
- the functional groups are ion exchanged with metal chlorides.
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.
Dependencies are inferred from the claim text.