3 results about "Efficient catalyst" patented technology

The invention discloses a nanogold micelle catalyst as well as a preparation method and an application thereof, and belongs to the technical field of nanogold micelle catalysts. For solving the problem that a high-efficiency catalyst is lacked in preparation of fatty acid ester by aqueous phase conversion of bio-based fatty alcohol, the invention provides the nanogold micelle catalyst as well as the preparation method and the application thereof. The preparation method of the nanogold micelle catalyst provided by the invention comprises the following steps: mixing an HAuCl4 aqueous solution and an mPEG-SH aqueous solution; stirring for 30-50 min at the temperature of 20-30 DEG C and the rotating speed of 500-1000 rpm, then dropwise adding a NaBH4 aqueous solution into the solution, stirring while dropwise adding, carrying out a reaction for 12-24 h to obtain an mPEGylated Au-NPs solution, and centrifuging to obtain a supernatant, namely the nanogold micelle catalyst. The nanogold micelle catalyst disclosed by the invention can be used for efficiently catalyzing water-phase oxidation of fatty alcohol to prepare fatty acid ester.

The invention discloses a ternary metal catalyst with excellent chlorine resistance and efficient catalytic oxidation of mixed VOCs, and belongs to the field of catalytic chemistry and nano science. The preparation method comprises the following steps: firstly, synthesizing ternary metal catalyst nanoparticles by adopting a solvothermal method, then loading the obtained nanoparticles on a TiO2 carrier by adopting an adsorption method, and finally centrifuging, drying and roasting to obtain the PtWM/TiO2 (M = Ru, Cr and Mn) catalyst, thereby finally achieving the excellent chlorine resistance to chlorine-containing VOCs, namely trichloroethylene (TCE) and the efficient catalyst for co-catalytic oxidation of toluene and TCE. The preparation process is simple, and the obtained PtWM/TiO2 (M = Ru, Cr or Mn) catalyst has high acidity, good chlorine resistance and excellent catalytic activity for co-catalytic oxidation reaction of toluene and trichloroethylene.