# US 9,433,932 B2 · Hydrogenation catalyst and method of manufacturing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,433,932 B2 - Document ID: US9433932B2 - Status: Granted - Kind: B2 - Application number: 14/517,350 - Filed: 2014-10-17 - Published: 2016-03-03 - Granted: 2016-09-06 - Earliest claimed: 2014-08-29 - Assignees: National Cheng Kung University - Applicants: National Cheng Kung University - Inventors: Chuh-Yung Chen; Cheng-Chien Wang; Chi-Yuan Hung; Lin-Hsiang Huang - Web page: https://patentgrep.com/patent/US9433932B2 ## CPC - B01J 23/892: {Nickel and noble metals} - B01J 23/42: Platinum - B01J 23/44: Palladium - B01J 23/462: {Ruthenium} - B01J 23/464: {Rhodium} - B01J 35/33: Electric or magnetic properties - B01J 35/45: Nanoparticles - B01J 35/612: {less than 10 m2/g} - B01J 37/16: Reducing - B01J 37/342: {of electric, magnetic or electromagnetic fields, e.g. for magnetic separation} - C07C 5/10: of aromatic six-membered rings - C07C 67/303: by hydrogenation of unsaturated carbon-to-carbon bonds - B01J 35/58: Fabrics or filaments - B01J 2235/30: Scanning electron microscopy; Transmission electron microscopy - C07C 2601/14: The ring being saturated - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS ## Abstract A hydrogenation catalyst is provided. The hydrogenation catalyst has a nanonickel carrier, and noble metal nanoparticles selected from Pd, Pt, Ru, Rh, or a mixture thereof, which are mounted onto the nanonickel carrier. Moreover, a method of manufacturing a hydrogenation catalyst is provided, and has steps of (1) preparing an aqueous solution containing nickel ions; (2) adding a first reducing agent in the aqueous solution containing nickel ions to form a reactant solution; (3) applying a magnetic field to the reactant solution for a first duration to obtain a nanonickel carrier; (4) preparing a noble metal solution; and (5) placing the nanonickel carrier in the noble metal solution for a second duration so that noble metal nanoparticles are mounted onto the nanonickel carrier. ## Claims ### Claim 1 A hydrogenation catalyst, comprising: a nanonickel carrier; and noble metal nanoparticles selected from palladium, platinum, ruthenium, rhodium, or a mixture thereof, wherein the noble metal nanoparticles are mounted onto the nanonickel carrier. ### Claim 2 (depends on 1) The hydrogenation catalyst according to claim 1, wherein the nanonickel carrier is constituted by one-dimensional nickel nanowires. ### Claim 3 (depends on 1) The hydrogenation catalyst according to claim 1, wherein a specific surface area of the nanonickel carrier is greater than or equal to 0.2 m2/g. ### Claim 4 (depends on 1) The hydrogenation catalyst according to claim 1, wherein a weight percentage of the noble metal nanoparticles in the hydrogenation catalyst is 2.5-7%. ### Claim 5 (depends on 1) The hydrogenation catalyst according to claim 1, wherein an atomic percentage of the noble metal nanoparticles in regard to the hydrogenation catalyst is 1.5-2.5%. ### Claim 6 (depends on 1) The hydrogenation catalyst according to claim 1, wherein a specific surface area of the hydrogenation catalyst is greater than or equal to 3.0 m2/g. ### Claim 7 A method of manufacturing a hydrogenation catalyst, comprising steps of: (1) preparing an aqueous solution containing nickel ions; (2) adding a first reducing agent in the aqueous solution containing nickel ions to form a reactant solution; (3) applying a magnetic field to the reactant solution for a first duration to obtain a nanonickel carrier; (4) preparing a noble metal solution containing noble metal ions selected from palladium ions, platinum ions, ruthenium ions, rhodium ions, or a mixture thereof; and (5) placing the nanonickel carrier in the noble metal solution for a second duration so that noble metal nanoparticles are mounted onto the nanonickel carrier. ### Claim 8 (depends on 7) The method according to claim 7, wherein the aqueous solution containing nickel ions in the step (1) is prepared from nickel chloride and deionized water. ### Claim 9 (depends on 7) The method according to claim 7, wherein the aqueous solution containing nickel ions further comprises an assistant agent selected from carboxymethyl cellulose, sodium citrate, sodium hydroxide, or a mixture thereof. ### Claim 10 (depends on 9) The method according to claim 9, wherein carboxymethyl cellulose is 4-6% by weight in the aqueous solution containing nickel ions. ### Claim 11 (depends on 9) The method according to claim 9, wherein the step (1) further comprises a step (1a) of: heating and stirring until the assistant agent is totally dissolved in the aqueous solution containing nickel ions. ### Claim 12 (depends on 7) The method according to claim 7, wherein the first reducing agent is hydrazine. ### Claim 13 (depends on 7) The method according to claim 7, wherein the magnetic field is 500-5000 G. ### Claim 14 (depends on 7) The method according to claim 7, wherein the first duration is 1-3 hours. ### Claim 15 (depends on 7) The method according to claim 7, wherein the noble metal solution containing noble metal ions in the step (4) is prepared from a noble metal salt and hydrochloric acid. ### Claim 16 (depends on 15) The method according to claim 15, wherein the concentration of the hydrochloric acid is 10 N. ### Claim 17 (depends on 7) The method according to claim 7, wherein the noble metal solution containing noble metal ions further comprises an additive selected from sodium citrate, sodium hydroxide, or a mixture thereof. ### Claim 18 (depends on 17) The method according to claim 17, wherein the step (4) further comprises a step (4a) of: heating and stirring until the additive is totally dissolved in the aqueous solution containing noble metal ions. ### Claim 19 (depends on 7) The method according to claim 7, wherein the step (5) further comprises a step of adding a second reducing agent to facilitate the formation of the noble metal nanoparticles. ### Claim 20 (depends on 19) The method according to claim 19, wherein the second reducing agent is hydrazine. ### Claim 21 (depends on 7) The method according to claim 7, wherein the second duration is 1-3 hours.