Catalytic depolymerisation of polymeric materials
First Claim
1. A process for depolymerizing polystyrene comprising catalytically depolymerizing molten polystyrene in the presence of a catalyst within a reaction zone to produce a reaction product, wherein said catalyst comprises [Fe—
- Cu—
Mo—
P]/Al2O3.
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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 affect 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.
61 Citations
17 Claims
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1. A process for depolymerizing polystyrene comprising catalytically depolymerizing molten polystyrene in the presence of a catalyst within a reaction zone to produce a reaction product, wherein said catalyst comprises [Fe—
- Cu—
Mo—
P]/Al2O3. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- Cu—
-
11. A process for depolymerizing polystyrene comprising:
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(a) catalytically depolymerizing molten polystyrene in the presence of a catalyst within a reaction zone to produce a wax or grease base stock, wherein the catalyst is prepared by binding a ferrous-copper complex to an alumina support; and (b) draining said wax or grease base stock into a container when said wax or grease base stock is liquid and is at a temperature above the flash point of said wax or grease base stock, respectively. - View Dependent Claims (12, 13)
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- 14. A process for depolymerizing polystyrene comprising catalytically depolymerizing molten polystyrene in the presence of a catalyst within a reaction zone to produce a wax or grease base stock, wherein said depolymerization process is conducted at a variable pressure to produce different grades of said wax or grease base stock, wherein said catalyst is prepared by binding a ferrous-copper complex to an alumina.
Specification