Catalytic depolymerisation of polymeric materials
First Claim
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1. A process for converting a molten polymeric material, comprising:
- providing a molten polymeric material having at least one carbon-carbon double bond; and
contacting the molten polymeric material with a catalyst material in a reaction zone to cleave at least one carbon-carbon double bond and produce a reaction product,wherein the catalyst material includes [Fe—
Cu—
Mo—
P]/Al2O3 prepared by binding a ferrous-copper complex to an alumina support to generate an intermediate material, and reacting the intermediate material with an Mo- and P-containing heteropolyacid.
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Abstract
A process for converting a molten polymeric material is provided. The process includes effecting disposition of a molten polymeric material, having at least one carbon-carbon double bond, in sufficient proximity to a catalyst material within a reaction zone, to effect a reactive process that effects generation of a reaction product. The reactive process effects cleaving of at least one carbon-carbon double bond. The catalyst material includes [Fe—Cu—Mo—P]/Al2O3 prepared by binding a ferrous-copper complex to an alumina support to generate an intermediate material, and reacting the intermediate material with a heteropolyacid.
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Citations
23 Claims
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1. A process for converting a molten polymeric material, comprising:
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providing a molten polymeric material having at least one carbon-carbon double bond; and contacting the molten polymeric material with a catalyst material in a reaction zone to cleave at least one carbon-carbon double bond and produce a reaction product, wherein the catalyst material includes [Fe—
Cu—
Mo—
P]/Al2O3 prepared by binding a ferrous-copper complex to an alumina support to generate an intermediate material, and reacting the intermediate material with an Mo- and P-containing heteropolyacid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A process for converting polymeric material to make waxes or grease base stocks through catalytic depolymerisation, comprising:
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preheating the polymeric material to form a molten polymeric material; catalytically depolymerizing the molten polymeric material in a high pressure reactor in the presence of a catalyst material at a temperature in the range of 300°
C. to 600°
C. until a pressure in the high pressure reactor reaches a predetermined value in the range of 50 psig to 350 psig, wherein the high pressure reactor comprises heaters and wherein the temperature is maintained using the heaters; andturning off the heaters and stopping the catalytic depolymerisation when the pressure in the high pressure reactor reaches the predetermined value and wherein the molten polymeric material is converted to a wax or a grease base stock, wherein the catalyst material is [Fe—
Cu—
Mo—
P]/Al2O3 prepared by binding a ferrous-copper complex to an alumina support to generate an intermediate material, and reacting the intermediate material with an Mo- and P-containing heteropolyacid. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A process for converting primary granules of polymeric material to make waxes or grease base stocks through catalytic depolymerisation, comprising:
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preheating the primary granules of polymeric material to form molten primary granules of polymeric material; catalytically depolymerizing the molten primary granules of polymeric material in a high pressure reactor in the presence of a catalyst material at a temperature in the range of 300°
C. to 600°
C. until a pressure in the high pressure reactor reaches a predetermined value in the range of 50 psig to 350 psig, wherein the high pressure reactor comprises heaters and wherein the temperature is maintained using the heaters; andturning off the heaters and stopping the catalytic depolymerisation when the pressure in the high pressure reactor reaches the predetermined value and wherein the molten primary granules of polymeric material are converted to a wax or a grease base stock, wherein the catalyst material is [Fe—
Cu—
Mo—
P]/Al2O3 prepared by binding a ferrous-copper complex to an alumina support to generate an intermediate material, and reacting the intermediate material with an Mo- and P-containing heteropolyacid. - View Dependent Claims (22, 23)
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Specification