Catalyst for preparing vinyl chloride, methods of preparation and application thereof
First Claim
1. A catalyst for the preparation of vinyl chloride, characterized in that:
- said catalyst comprises activated carbon as a carrier, a barium compound and a phosphorus compound supported on the carrier, wherein said barium compound has a mass percentage of 0.2% to 20% and said phosphorous compound has a mass percentage of less than 10% based on the total mass of the catalyst,wherein said phosphorus compound is phosphoric acid.
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Abstract
The present invention discloses a catalyst used in preparing vinyl chloride, its method of preparation, and its applications. Said catalyst used in making vinyl chloride comprises activated carbon as a support, a barium compound and a phosphorus compound supported thereon. The barium compound accounts for 0.2% to 20% of the total mass of the catalyst and the phosphorus compound accounts for 0% to 10% of the total mass of the catalyst based on the mass percentage. A water-soluble barium compound, a water-soluble phosphorus compound, an aqueous polymer monomer, and water are mixed to form a solution or emulsion A. The activated carbon is added into the solution or emulsion A. The activated carbon is removed from water after impregnation, spin-dried, and then the monomers are polymerized. The activated carbon, after polymerization step, is heated to remove water and to decompose and carbonize the polymer. The catalyst after carbonization was activated to obtain a catalyst used in making vinyl chloride.
4 Citations
11 Claims
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1. A catalyst for the preparation of vinyl chloride, characterized in that:
- said catalyst comprises activated carbon as a carrier, a barium compound and a phosphorus compound supported on the carrier, wherein said barium compound has a mass percentage of 0.2% to 20% and said phosphorous compound has a mass percentage of less than 10% based on the total mass of the catalyst,
wherein said phosphorus compound is phosphoric acid. - View Dependent Claims (2)
- said catalyst comprises activated carbon as a carrier, a barium compound and a phosphorus compound supported on the carrier, wherein said barium compound has a mass percentage of 0.2% to 20% and said phosphorous compound has a mass percentage of less than 10% based on the total mass of the catalyst,
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3. A method for preparing a catalyst used in preparing vinyl chloride, comprising the steps of:
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(1) mixing a water-soluble barium compound, a water-soluble phosphorus compound, an aqueous polymer monomer, and water to obtain a solution or an emulsion; (2) impregnating the activated carbon in the solution or the emulsion; (3) polymerizing the aqueous polymer monomer on the activated carbon after spin-drying to form an aqueous polymer; (4) heating the aqueous polymer supported on the activated carbon to form a carbonized polymer; (5) activating the activated carbon having the carbonized polymer supported thereon. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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10. A method of preparing vinyl chloride, comprising the step of:
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obtaining a catalyst; reacting acetylene and dichloroethane in the presence of said catalyst, wherein said catalyst comprises activated carbon as a carrier, a barium compound and a phosphorus compound supported on the carrier, wherein said barium compound has a mass percentage of 0.2% to 20% and said phosphorous compound has a mass percentage of less than 10% based on the total mass of the catalyst, wherein said phosphorus compound is phosphoric acid. - View Dependent Claims (11)
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Specification