42results about How to "Rich in active sites" patented technology

The invention discloses an aluminum zirconium acid ester-doped titanium phosphate dual-component surface-modified ferric fluoride anode material and a preparation method. The method is characterized by comprising the following steps: loading aluminum zirconium acid ester, silicon / aluminium-doped titanium phosphate Li1.3Al0.1Ti1.9Si0.2P2.8O12, and a synthetic raw materials into a high-energy ball mill, ball-milling for a certain period, and performing heat treatment to obtain the FeF3 anode material. The aluminum zirconium acid ester is a bimetal coupling agent, has multiple active sites, and bonds with Li1.3Al0.1Ti1.9Si0.2P2.8O12 by hydrolysis of multiple alkoxyl groups into hydroxyl groups while having condensation polymerization with hydroxyl groups on the surface of the FeF3 anode material, and zirconium is an electron acceptor, can coordinate with fluorine ions on surfaces of FeF3 particles, therefore, under the action of the aluminum zirconium acid ester, doped titanium phosphate Li1.3Al0.1Ti1.9Si0.2P2.8O12 is bonded to the surfaces of the FeF3 anode particles with good contact between particles, and Li1.3Al0.1Ti1.9Si0.2P2.8O12 is a good lithium ion conductor, and the ionic conductivity of Li1.3Al0.1Ti1.9Si0.2P2.8O12 is 103-104 times of that of lithium cobalt oxide. Therefore, the defect that the FeF3 anode material has an extremely-low ionic conductivity can be overcome, and the electrochemical properties of the FeF3 material are improved.

The invention belongs to the field of the preparation of catalysts for stationary source tail gas denitration, and relates to the preparation of a catalyst by using a honeycomb metal carrier. Tabular and corrugated wire meshes attached with aluminum oxide coatings are stacked alternately and fixedly molded to form a catalyst carrier; a passage inside the carrier has a three-dimensional transparent structure. The preparation is characterized in that: the catalyst is prepared by loading the active components V2O5, WO3 and TiO2 on the surface of the catalyst carrier by a stepwise loading method;the mass sum of the V2O5, the WO3 and the TiO2 is 10-70 percent of the total weight of the aluminum oxide coatings and the V2O5, the WO3 and the TiO2; and the mass of V elements is 0.2-5.6 percent ofthe mass sum of the V2O5, the WO3 and the TiO2. The catalyst of the invention has low-temperature denitration activity and low-temperature sulfur and water resistant performance; and when the smoke temperature is 250 DEG C, the SO2 concentration is 600 ppm and the moisture content is 10%, the denitration efficiency of the catalyst is above 90%.

The invention discloses a cation S and anion N double-doped one-dimensional nanostructure TiO2 photocatalyst. The preparation method is as follows: (1) using a hydrothermal method, nano-TiO2 powder, TiO2 colloid or Ti(OH)4 and alkali The solution is made into a mixed suspension for hydrothermal reaction; (2) cooling, filtering out the precipitate, and washing to obtain white hydrotitanic acid; (3) preparing a mixed suspension with hydrotitanic acid, thiourea and solvent, stirring After ultrasonic treatment, drying to obtain a homogeneous mixture of hydrotitanic acid and thiourea; (4) calcining the homogeneous mixture of hydrotitanic acid and thiourea to obtain cation S and anion N double-doped one-dimensional nanostructure TiO2 photocatalyst. The catalyst of the invention has a one-dimensional structure and abundant active sites, which is beneficial to the improvement of the reaction activity. It can accelerate the mass transfer of pollutants to the catalytic material, thereby improving the photocatalytic efficiency; the special one-dimensional structure and non-metal double doping make it have excellent visible light catalytic activity.