# US 9,517,450 B2 · Hollow metal nano particles supported on carrier > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,517,450 B2 - Document ID: US9517450B2 - Status: Granted - Kind: B2 - Application number: 14/649,846 - Filed: 2013-12-27 - Published: 2015-11-05 - Granted: 2016-12-13 - Earliest claimed: 2012-12-27 - Assignees: LG Chem, Ltd. - Applicants: LG Chem, Ltd. - Inventors: Jun Yeon Cho; Sang Hoon Kim; Gyo Hyun Hwang; Kwanghyun Kim - Web page: https://patentgrep.com/patent/US9517450B2 ## CPC - B22F 1/00: Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties - B01J 21/18: Carbon - B01J 23/892: {Nickel and noble metals} - B01J 35/19: {Catalysts containing parts with different compositions} - B01J 35/393: {Metal or metal oxide crystallite size} - B01J 35/45: Nanoparticles - B01J 35/52: Hollow spheres - B01J 37/0072: {Preparation of particles, e.g. dispersion of droplets in an oil bath} - B01J 37/16: Reducing - B22F 1/0549: {Hollow particles, including tubes and shells} - B22F 1/17: Metallic particles coated with metal - B22F 1/18: Non-metallic particles coated with metal - B82B 1/00: Nanostructures formed by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units - B82B 3/00: Manufacture or treatment of nanostructures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units - B01J 2235/00: Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties - B01J 2235/30: Scanning electron microscopy; Transmission electron microscopy - B22F 9/24: starting from liquid metal compounds, e.g. solutions - Y02E 60/50: Fuel cells - B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - B82B: NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS, MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES AS DISCRETE UNITS; MANUFACTURE OR TREATMENT THEREOF - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The present specification relates to hollow metal nano particles supported on a carrier. ## Claims ### Claim 1 A catalyst comprising hollow metal nano particles supported on a carrier, comprising: a hollow metal nano particle which includes a hollow core portion; and a shell portion including a first metal and a second metal, wherein the hollow metal nano particles have an average particle diameter of 30 nm or less, and wherein the hollow metal nano particles comprise an anionic surfactant or a cationic surfactant inside the hollow core portion. ### Claim 2 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein the hollow metal nano particles have a dispersion degree from 20% to 50%. ### Claim 3 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein the shell portion comprises at least one first shell comprising the first metal; and at least one second shell comprising the second metal. ### Claim 4 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein the shell portion comprises at least one shell comprising both the first metal and the second metal. ### Claim 5 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein the shell portion has a thickness of 5 nm or less. ### Claim 6 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein in element analysis data of the hollow metal nano particles, at least two major peaks showing an atomic percentage of any one of the first metal and the second metal are present. ### Claim 7 (depends on 6) The catalyst comprising hollow metal nano particles supported on a carrier of claim 6, wherein when a particle diameter of the hollow metal nano particles is set to 100%, at least one major peak showing an atomic percentage of the first metal is present within a region that is 0% to 30% from one end point of particle diameters, and at least another major peak showing an atomic percentage of the first metal is present within a region that is 0% to 30% from the other end point of particle diameters. ### Claim 8 (depends on 6) The catalyst comprising hollow metal nano particles supported on a carrier of claim 6, wherein when a particle diameter of the hollow metal nano particles is set to 100%, at least one major peak showing an atomic percentage of the second metal is present within a region that is 0% to 30% from one end point of particle diameters, and at least another major peak showing an atomic percentage of the second metal is present within a region that is 0% to 30% from the other end point of particle diameters. ### Claim 9 (depends on 6) The catalyst comprising hollow metal nano particles supported on a carrier of claim 6, wherein a plurality of peaks showing an atomic percentage of the first metal or the second metal is present in an entire range of particle diameters. ### Claim 10 (depends on 6) The catalyst comprising hollow metal nano particles supported on a carrier of claim 6, wherein at least two major peaks showing an atomic percentage of the first metal are present, and at least two major peaks showing an atomic percentage of the second metal are present. ### Claim 11 (depends on 6) The catalyst comprising hollow metal nano particles supported on a carrier of claim 6, wherein at least two major peaks showing an atomic percentage of the first metal are present, and a plurality of peaks showing an atomic percentage of the second metal is present in an entire range of particle diameters. ### Claim 12 (depends on 6) The catalyst comprising hollow metal nano particles supported on a carrier of claim 6, wherein at least two major peaks showing an atomic percentage of the second metal are present, and a plurality of peaks showing an atomic percentage of the first metal is present in an entire range of particle diameters. ### Claim 13 (depends on 6) The catalyst comprising hollow metal nano particles supported on a carrier of claim 6, wherein the cross-sectional element analysis data of the particles is obtained using an energy dispersive spectrometer (EDS). ### Claim 14 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein a volume of the hollow core is 50% by volume or more of a total volume of the hollow metal nano particles. ### Claim 15 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein a particle diameter of the hollow metal nano particles is within a range from 80% to 120% of an average particle diameter of the hollow metal nano particles. ### Claim 16 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein an atomic percentage ratio of the first metal to the second metal in the shell portion is 1:5 to 10:1. ### Claim 17 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein the shell portion is formed throughout an outer surface of the hollow core portion. ### Claim 18 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein the first metal and the second metal are each independently selected from the group consisting of metals belonging to Group 3 to Group 15 of the periodic table, metalloids, lanthanide metals, and actinide metals. ### Claim 19 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein the first metal and the second metal are each independently selected from the group consisting of platinum (Pt), ruthenium (Ru), rhodium (Rh), molybdenum (Mo), osmium (Os), iridium (Ir), rhenium (Re), palladium (Pd), vanadium (V), tungsten (W), cobalt (Co), iron (Fe), selenium (Se), nickel (Ni), bismuth (Bi), tin (Sn), chromium (Cr), titanium (Ti), gold (Au), cerium (Ce), silver (Ag), and copper (Cu). ### Claim 20 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein the hollow metal nano particles have a spherical shape. ### Claim 21 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein the carrier is a carbon-based material or an inorganic fine particle. ### Claim 22 (depends on 1) The catalyst comprising hollow metal nano particles supported on a carrier of claim 1, wherein the hollow metal nano particles supported on a carrier is fabricated by a fabrication method including: forming a solution by adding a first metal salt, a second metal salt, and a surfactant to a solvent; dispersing a carrier by adding the carrier to the solution; and forming hollow metal nano particles supported on a carrier by adding a reducing agent to the solution, wherein the forming of the solution comprises forming a micelle by the surfactant, and surrounding the outside of the micelle by the first metal salt and the second metal salt, and the micelle region in the hollow metal nano particle is formed to be hollow. ### Claim 23 (depends on 22) The catalyst comprising hollow metal nano particles supported on a carrier of claim 22, wherein the forming of the solution comprises further adding a stabilizer. ### Claim 24 (depends on 22) The catalyst comprising hollow metal nano particles supported on a carrier of claim 22, wherein after the forming of the hollow metal nano particles, the method further comprises removing the surfactant inside the hollow metal nano particles. ### Claim 25 (depends on 22) The catalyst comprising hollow metal nano particles supported on a carrier of claim 22, wherein the solvent comprises water. ### Claim 26 (depends on 22) The catalyst comprising hollow metal nano particles supported on a carrier of claim 22, wherein the fabrication method is carried out at room temperature.