Sulfur-containing organic compound assisted metal nanoparticle synthesis for three-way catalysis application
AssigneeJohnson Matthey Public Limited Company
InventorsDaniel DePuccio, Kevin Kistler, Dongxia Liu
Life of this patent
Estimating the term…
Abstract
A method of manufacturing a catalyst article, the method comprising: providing a slurry comprising a support material, palladium ions, alkaline-earth-metal ions and an organic compound, wherein the organic compound comprises a functional group selected from a sulfo group (—SO3H), a sulfonyl group (—S(═O)2—) and a sulfinyl group (—S(═O)—); disposing the slurry on a substrate; and heating the slurry to form nanoparticles of the palladium and nanoparticles of a sulfate of the alkaline earth metal on the support material.
Claims23
A method of manufacturing a catalyst article, the method comprising:
- providing a slurry comprising a support material, palladium ions, alkaline-earth metal ions and an organic compound, wherein the organic compound comprises a functional group selected from a sulfo group (—SO3H), a sulfonyl group (—S(═O)2—) and a sulfinyl group (—S(═O)—);
- disposing the slurry on a substrate;
- heating the slurry to form nanoparticles of the palladium and nanoparticles of a sulfate of the alkaline-earth metal on the support material;
- wherein the method is a one-pot method;
- and
- wherein the palladium nanoparticles have a crystallite size of from 0.1 nm to 20 nm.
A method of manufacturing a catalyst article, the method comprising:
- providing a solution comprising palladium ions, alkaline-earth metal ions and an organic compound, wherein the organic compound comprises a functional group selected from a sulfo group (—SO3H), a sulfonyl group (—S(═O)2—) and a sulfinyl group (—S(═O)—);
- providing a support material;
- contacting the solution with the support material to form a slurry;
- disposing the slurry on a substrate;
- heating the slurry to form nanoparticles of the palladium and nanoparticles of a sulfate of the alkaline-earth metal on the support material;
- wherein the method is a one-pot method;
- and
- wherein the palladium nanoparticles have a crystallite size of from 0.1 nm to 20 nm.
A method of manufacturing a catalyst article, the method comprising:
- providing a solution comprising palladium ions, alkaline-earth metal ions and an organic compound, wherein the organic compound comprises a functional group selected from a sulfo group (—O3H), a sulfonyl group (—S(═O)2—) and a sulfinyl group (—S(═O)—);
- providing a support material;
- contacting the solution with the support material to form a slurry;
- disposing the slurry on a substrate;
- and
- heating the slurry to form nanoparticles of the palladium and nanoparticles of a sulfate of the alkaline-earth metal on the support material;
- and
- wherein the palladium nanoparticles have a crystallite size of from 0.1 nm to 20 nm.
A method of manufacturing a catalyst article, the method comprising:
- providing a solution comprising palladium ions, alkaline-earth metal ions and an organic compound, wherein the organic compound comprises a functional group selected from a sulfo group (—SO3H), a sulfonyl group (—S(═O)2—) and a sulfinyl group (—S(═O)—);
- providing a support material;
- contacting the solution with the support material to form a slurry;
- disposing the slurry on a substrate;
- heating the slurry to form nanoparticles of the palladium and nanoparticles of a sulfate of the alkaline-earth metal on the support material;
- wherein the method is a one-pot method;
- and
- wherein the alkaline-earth metal sulfate nanoparticles have a crystallite size of from 0.1 nm to 30 nm.
A method of manufacturing a catalyst article, the method comprising:
- providing a slurry comprising a support material, palladium ions, alkaline-earth metal ions and an organic compound, wherein the organic compound comprises a functional group selected from a sulfo group (—SO3H), a sulfonyl group (—S(═O)2—) and a sulfinyl group (—S(═O)—);
- disposing the slurry on a substrate;
- heating the slurry to form nanoparticles of the palladium and nanoparticles of a sulfate of the alkaline-earth metal on the support material;
- wherein the method is a one-pot method;
- and
- wherein the alkaline-earth metal sulfate nanoparticles have a crystallite size of from 0.1 nm to 30 nm.
Dependencies are inferred from the claim text.