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US 12,472,486 B2Granted
Molding catalyst for hydrogen chloride oxidation reaction, and method for producing same
AssigneeHanwha Solutions Corporation
InventorsJeong Hwan Chun, Seong Ho Yun, Young Jin Cho
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Abstract
The present invention relates to a method for producing a molding catalyst for obtaining chlorine (Cl2) through an oxidation reaction of hydrogen chloride (HCl), and more specifically, to a method for producing an oxidation reaction molding catalyst by adding heterogeneous material to a ruthenium oxide (RuO2)-supported catalyst having titanium oxide (TiO2) as a supporting body, and molding so as to be usable in a fixed bed reactor to produce chlorine (Cl2) from hydrogen chloride (HCl).
Claims8
A method for producing a molding catalyst for hydrogen chloride oxidation reaction, the method comprising:
- a first supporting step of supporting a solution, in which a precursor of at least one selected from heterogeneous materials is dissolved, on a support;
- a step of obtaining a solid after performing primary drying, calcining, and cooling after the first supporting step;
- a step of preparing a molding support by mixing and molding an organic binder, an inorganic binder, and water with the solid;
- a step of preparing a molded body after performing secondary drying, calcining, and cooling on the molding support;
- a second supporting step of preparing a solution in which a ruthenium precursor is dissolved and supporting the molded body;
- and
- a step of performing tertiary drying and calcining after the second supporting step-,
- wherein the molding support includes at least one selected from a group consisting of alumina, titania, and zirconia,
- wherein the organic binder includes at least one selected from a group consisting of methyl cellulose, hydroxyethyl cellulose, sodium carboxymethyl cellulose, purified starch, dextrin, polyvinyl alcohol, polyvinyl butyral, polymethyl methacrylate, polyethylene glycol, paraffin, wax emulsion, and microcrystalline wax,
- wherein the inorganic binder includes at least one selected from a group consisting of alumina sol, silica sol, titania sol, and zirconia sol,
- wherein the heterogeneous material includes ceria.
8 more elements
A method for producing a molding catalyst for hydrogen chloride oxidation reaction, the method comprising:
- a step of preparing a molding support by mixing and molding an organic binder, an inorganic binder, and water with a support;
- a step of preparing a molded body after performing primary drying, calcining, and cooling on the molding support;
- a step of supporting a solution, in which a precursor of at least one selected from heterogeneous materials and a ruthenium precursor are dissolved, on the molded body;
- and
- a step of performing secondary drying and calcining after the second supporting step,
- wherein the molding support includes at least one selected from a group consisting of alumina, titania, and zirconia,
- wherein the organic binder includes at least one selected from a group consisting of methyl cellulose, hydroxyethyl cellulose, sodium carboxymethyl cellulose, purified starch, dextrin, polyvinyl alcohol, polyvinyl butyral, polymethyl methacrylate, polyethylene glycol, paraffin, wax emulsion, and microcrystalline wax,
- wherein the inorganic binder includes at least one selected from a group consisting of alumina sol, silica sol, titania sol, and zirconia sol,
- wherein the heterogeneous material includes at least one selected from a group consisting of ceria, alumina, and silica.
6 more elements
A method for producing a molding catalyst for hydrogen chloride oxidation reaction, the method comprising:
- a step of preparing a molding support by mixing an organic binder, an inorganic binder, and water with a support;
- a step of preparing a molded body by performing primary drying, calcining, and cooling after the molding step;
- a step of supporting a solution, in which a precursor of at least one selected from heterogeneous materials is dissolved, on the molded body;
- a step of obtaining a solid by performing secondary drying, calcining, and cooling after the first supporting step;
- a second supporting step of supporting a solution, in which a ruthenium precursor is dissolved, on the molded body;
- and
- a step of performing tertiary drying and calcining after the second supporting step-,
- wherein the molding support includes at least one selected from a group consisting of alumina, titania, and zirconia,
- wherein the organic binder includes at least one selected from a group consisting of methyl cellulose, hydroxyethyl cellulose, sodium carboxymethyl cellulose, purified starch, dextrin, polyvinyl alcohol, polyvinyl butyral, polymethyl methacrylate, polyethylene glycol, paraffin, wax emulsion, and microcrystalline wax,
- wherein the inorganic binder includes at least one selected from a group consisting of alumina sol, silica sol, titania sol, and zirconia sol,
- wherein the heterogeneous material includes at least one selected from a group consisting of ceria, alumina, and silica.
8 more elements
Dependencies are inferred from the claim text.