Zinc(II) and gallium(III) catalysts for olefin reactions
AssigneePurdue Research Foundation
InventorsJeffrey T. Miller, Nicole Libretto, Christopher Russell, Matthew A. Conrad
Life of this patent
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Abstract
Oligomerization catalyst and method for oligomerization using the catalyst. The catalyst comprises a single Zn(II) or Ga(III) metal ion center directly bonded to a support through a shared oxygen atom, the catalyst having at least one M-O bond which forms an active site for oligomerization. The method includes reacting one or more C2 to C12 olefins with the oligomerization catalyst at a temperature of about 200° C. or higher to provide an oligomer product comprising C4 to C26 olefins.
Claims20
A method for making light hydrocarbon oligomers, comprising:
- contacting one or more C2 to C12 olefins with a supported zinc catalyst;
- and
- oligomerizing the one or more C2 to C12 olefins in the presence of the supported zinc catalyst to form an oligomer product comprising C4 to C26 olefins,
- wherein the supported zinc catalyst comprises a single Zn(II) metal ion center directly bonded to a support through a shared oxygen atom, and the zinc is present in an amount ranging from about 0.1 wt % to about 20 wt %, based on the total weight of the catalyst.
A method for making light hydrocarbon oligomers, comprising:
- contacting one or more C2 to C12 olefins with a supported zinc catalyst;
- and
- oligomerizing the one or more C2 to C12 olefins in the presence of the supported zinc catalyst to provide an oligomer product comprising C4 to C26 olefins, wherein the supported zinc catalyst comprises:
- a support;
- and
- at least one Zn(II) metal ion surrounded by four oxygen atoms, wherein:
- the at least one Zn(II) metal ion is directly bonded to the support through a shared oxygen atom to form at least one Zn(II)-O bond,
- the zinc metal ion center of the at least one Zn(II)-O bond has a +2 oxidation state at the reaction conditions, and
- the supported zinc catalyst does not have Zn—O—Zn bonds.
A method for making light hydrocarbon oligomers, comprising:
- oligomerizing one or more C2 to C12 olefins in the presence of a catalyst at oligomerization conditions comprising a temperature of about 135° C. to about 500° C. and a pressure of about 1 bar to about 68.9 bar to provide an oligomer product comprising C4 to C26 olefins, wherein the catalyst comprises a zinc containing compound and a support comprising at least one oxygen atom, wherein:
- at least one Zn(II) metal ion is surrounded by four oxygen atoms,
- the at least one Zn(II) metal ion is directly bonded to the support through a shared oxygen atom to form at least one Zn(II)-O bond,
- the zinc metal ion center of the at least one Zn(II)-O bond has a +2 oxidation state at the reaction conditions, and
- the catalyst does not have Zn—O—Zn bonds.
Dependencies are inferred from the claim text.