Preparation method of noble metal-based catalyst

• Main Authors: YU ZHIHONG, GONG CHUNLONG, LIU GUOHUI, WANG SHAOXI
• Format: Patent
• Language: Chinese; English
• Published: 27.07.2021
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to a preparation method of a noble metal-based catalyst, belonging to a preparation method of a catalyst. The method comprises the following steps: adding a ruthenium-containing compound into a carbon slurry solution with a certain pH value, performing dipping and adsorbing, then conducting dipping at room temperature for a period of time, then adjusting the pH value of the solution to be greater than 7, adding a reducing agent with a certain concentration, carrying out isopyknic intense stirring reduction, carrying out positive-pressure filtration after reduction for a certain time, and then carrying out certain post-treatment operation which mainly comprises a washing process on the prepared catalyst, thereby obtaining the ruthenium/carbon catalyst. The method has the advantages that operation is simplified, the purpose of efficiently preparing the catalyst is achieved, noble metal nanoparticles can be quickly generated and uniformly dispersed on the carrier, and an average microcrysta