3results about How to "Improve catalytic oxidation performance" patented technology

This invention provides a supported noble metal catalyst, its preparation method, and its application, belonging to the field of industrial flue gas catalytic purification technology. The supported noble metal catalyst provided by this invention includes a cordierite support and a platinum catalyst bonded to the surface and pores of the cordierite support by a binder. The platinum catalyst includes a support and an active component and an active agent supported on the surface of the support. The active component is elemental Pt and Pt oxides; the active agent is one or more of tungsten oxide, molybdenum oxide, and vanadium oxide. The supported noble metal catalyst provided by this invention exhibits excellent sulfur and water resistance, is not easily deactivated, and has high catalytic efficiency.

This invention relates to the field of catalyst preparation, disclosing a catalyst for the removal of volatile organic compounds (VOCs), its preparation method, and its applications. The catalyst comprises a support and an active component supported on the support; wherein the active component comprises a noble metal and a matrix metal oxide, wherein the noble metal is Pt metal and / or Ag-Pt alloy; the matrix metal oxide comprises single and / or composite oxides of Al and Ce, rare earth element oxides other than cerium, and zinc oxide. The catalyst provided by this invention has high efficiency in catalytic oxidation of VOCs and is expected to be widely applied in the preparation of various fixed-bed catalytic materials, showing broad application prospects.

The present application belongs to the field of non-point source pollution treatment, and provides a method for treating non-point source pollution by using river slope. The method comprises the following steps: setting at least two guide plates at the river slope where non-point source pollution wastewater flows into the river, the upper end and the lower end of the guide plate being connected with the top and the bottom of the slope respectively, and forming a non-point source pollution treatment area between the guide plates; digging a plurality of discrete filler pits on the slope surface of the non-point source pollution treatment area, fixing filler bags containing carbon-based functional materials or environmental functional materials in the filler pits, and making the filler bags protrude from the slope surface; introducing non-point source pollution wastewater into the non-point source pollution treatment area or adding an oxidizing agent while introducing the wastewater, and the wastewater contacts with the materials in the filler bags during flowing through the non-point source pollution treatment area to realize adsorption or adsorption and degradation of pollutants. The present application provides an effective way for treating non-point source pollution, and can reduce the threat of non-point source pollution to the ecological environment of rivers.