6results about How to "Strong redox" patented technology

The present invention relates to the field of catalyst technology, and in particular to a preparation method, product and application of a biochar-based catalyst. The preparation method of the biochar-based catalyst comprises the following steps: step 1, dissolving two precursor substances containing Mn and metal N respectively in water to obtain a homogeneous solution; step 2, adding the homogeneous solution to an alkaline solution containing waste residue L and keeping the pH of the reaction system alkaline, aging, and obtaining a mixed solution; step 3, filtering and washing the mixed solution, and then drying to obtain a hydrotalcite-like composite material containing N, Mn and L; step 4, calcining the hydrotalcite-like composite material containing N, Mn and L to obtain the biochar-based catalyst. The present invention not only realizes the recycling of waste, but also the prepared catalyst can efficiently catalytically reduce nitrogen oxides in flue gas at low temperature, and also has good low-temperature anti-poisoning performance and regeneration performance, which conforms to the concept of "treating waste with waste".

This invention discloses a double-layer composite ceramic fiber filter tube with functions of flue gas dust removal, nitrous oxide removal, and dioxin removal, and its preparation method. The ceramic fiber tube consists of an outer filter layer and an inner catalyst layer. The ceramic fiber tube provided by this invention has high dust removal efficiency at 150℃~400℃, high nitrous oxide removal efficiency, and high dioxin removal efficiency. The preparation process is simple and has few steps. The active components are uniformly dispersed on the carrier, with adjustable loading and high bonding strength. This material can achieve integrated treatment of dust, nitrous oxide, and dioxins, efficiently simplifying the treatment process of industrial exhaust gas purification and reducing flue gas treatment costs.

The invention belongs to the technical field of environmental catalytic materials, and particularly discloses a Ru-Zr / CePO4 catalyst for inhibiting polychlorinated by-products as well as a preparation method and application of the Ru-Zr / CePO4 catalyst. The catalyst comprises a CePO4 carrier and an active component loaded on the surface of the CePO4 carrier; the active component comprises a Zr species and a Ru species; the catalyst has a multi-phase interface structure, and comprises a Ru0 / CePO4 interface, a RuOx / CePOO interface, a ZrOx / CePO4 interface and a RuOx-ZrOx / CePO4 interface. An acid-base pair of CePO4 and a ZrOx / CePO4 interface promote dichloroethane adsorption dechlorination and rapid removal of HCl; the electron-rich Ru species and the RuOx-ZrOx interface enhance lattice oxygen migration and water activation, and the vinyl chloride intermediate is subjected to rapid low-temperature oxidation hydrolysis. Multi-interface cooperation blocks Cl2 circulation from the source and inhibits polychlorinated by-products. The T90 of the catalyst reaches 260 DEG C at 260 DEG C, the CO2 selectivity is close to a theoretical value, and the catalyst has excellent water resistance, chlorine poisoning resistance and long-term stability and is wide in application prospect.

The present application relates to a kind of chlorine dioxide solid sustained-release agent and its preparation method, the preparation method includes: S1, zeolite, activated carbon fiber and water are mixed, stirring and then filtering dry, obtain activated carbon fiber modified zeolite;S2, the above activated carbon fiber modified zeolite is contacted with fluorine gas, and activated carbon fiber-fluorine gas modified zeolite is obtained;S3, the above activated carbon fiber-fluorine gas modified zeolite is soaked in chlorite solution, filter dry, and the chlorine dioxide solid sustained-release agent is obtained, the chlorine dioxide solid sustained-release agent obtained by the method has the advantages of large chlorite loading, chlorine dioxide release rate is fast, sustained-release period is long etc..