3 results about "Platinum-containing Compounds" patented technology

The application belongs to the technical field of catalysts, and relates to a Cu monatomic Pt sub-nanometer cluster catalyst based on carbon nanosheets and a preparation method and application thereof. The preparation method comprises the following steps: adding a nitrogen-containing precursor and benzene tricarboxylic acid into water, and stirring to obtain a suspension; adding a copper-containing compound and a platinum-containing compound into the suspension, stirring, and drying to obtain a precursor powder; and performing heat treatment on the precursor powder under a protective gas to obtain the catalyst. The application anchors Cu monatomic atoms and Pt atomic clusters on ultrathin carbon nanosheets, so that the prepared catalyst can be applied to hydrogen production as a hydrogen evolution catalyst, and has excellent electrochemical performance under alkaline conditions.

The invention discloses a continuous reforming catalyst and a preparation method and application thereof.The preparation method comprises the steps that treated aluminum oxide pellets are subjected to equivalent-volume impregnation in impregnation liquid containing organic tin and inorganic tin in sequence and roasted in the nitrogen atmosphere and the air atmosphere respectively, and aluminum oxide containing both the organic tin and the inorganic tin is obtained; and then carrying out dynamic excessive impregnation in an impregnation liquid containing a platinum compound and a competitive adsorbent, and carrying out water-chlorine activation and reduction to obtain the continuous reforming catalyst. By loading different tin species step by step and controlling the roasting atmosphere, high dispersion of the metal active component and accurate regulation and control of the acidity of the carrier are realized, and the prepared catalyst shows excellent aromatic hydrocarbon selectivity, activity stability and low carbon deposition rate in a naphtha reforming reaction, and is suitable for a high-severity continuous reforming process.

This invention relates to the field of platinum-containing compound technology, and provides a method and apparatus for the continuous synthesis of hexahydroxyplatinic acid. The invention involves mixing sodium hydroxide solution and chloroplatinic acid solution in a micromixer, followed by reaction in a reaction coil. The reaction solution is then cooled in a cooling coil to obtain a product solution containing sodium hexahydroxyplatinate. This product solution is then acidified to obtain hexahydroxyplatinic acid. The micromixer enables millisecond-level rapid mixing of sodium hydroxide and chloroplatinic acid solutions, ensuring uniform contact of the two raw materials at the microscale. Simultaneously, the design of the reaction and cooling systems allows for precise temperature control during the reaction process, solving the problems of low heat transfer efficiency and localized overheating in traditional reaction vessels, and improving product uniformity. The method provided by this invention has good safety, achieves efficient continuous synthesis of hexahydroxyplatinic acid, is suitable for scale-up production, and has significant industrial application value and promising prospects.