30results about How to "Catalytic decomposition" patented technology

A composition for use in the manufacture of compound semiconductors is provided. Also provided are methods for producing compound semiconductors using these compositions.

A composition for use in compound semiconductor fabrication is provided. Methods of manufacturing compound semiconductors using these compositions are also provided.

The invention discloses a preparation method and an application of a FeS2 and S composite material, and belongs to the technical field of energy materials. The method includes the steps: (1) mixing ferric salt solution and organic ligand solution to prepare a Fe-based zeolite imidazole frame compound (Fe-ZIF); (2) mixing the prepared Fe-ZIF and sulfur, and calcining mixture in a tube furnace at high temperature to obtain hollow FeS2 balls; (3) mixing the hollow FeS2 balls and elemental sulfur, heating and smelting mixture under protection of inert gas, and cooling the mixture to reach the indoor temperature to obtain the FeS2-S composite material. The preparation method has the advantages that the FeS2 serves as positive electrode materials of lithium-sulfur batteries and has high chemicaladsorption effects on discharge intermediate polysulfide lithium of the lithium-sulfur batteries, namely, dissolution of the polysulfide lithium is restrained by the aid of Lewis acid and base actions of the FeS2 and polysulfide ions, shuttle effects are reduced, and decomposition of the polysulfide lithium can be catalyzed by the FeS2, so that battery performances are improved. The preparation method is simple, low in raw material cost and pollution-free in process.

The invention relates to a preparation method of bismuth zirconate microcrystal ceramic glaze with a photocatalytic function. The preparation method includes: blending quartz, potassium feldspar, albite, borax, Bi2O3, Suzhou kaolin and lithium carbonate according to the mass ratio, performing heat preservation at 1270-1290 DEG C for 20-40 minutes, taking out, pouring into water for quenching, and grinding to obtain a material A; blending the material A, the Bi2O3, ZrO2 and the Suzhou kaolin according to the mass ratio to obtain a material B; adding the material B and a dispersing agent into water, and evenly stirring to prepare glaze slip; glazing the surface of ceramic with the glaze slip, and sintering to obtain the bismuth zirconate microcrystal ceramic glaze with the photocatalytic function. The preparation method has the advantages that the ceramic glaze is prepared by the sintering process, coating is not needed, the prepared functional glaze can be tightly combined with a ceramic matrix, the photocatalyst generated during the sintering of the Bi2O3 and the ZrO2 is evenly distributed in the glaze, and the 'rainbow effect' which affects glaze attractiveness is not generated.

The invention belongs to the technical field of resource utilization for metallurgical and industrial waste slag, and specifically relates to a composite additive for strengthening direct reduction for laterite-nickel ores, and an application thereof. The composite additive for strengthening the direct reduction for the laterite-nickel ores is composed of the following components in percentage bymass: 30wt%-60wt% of nickel smelting slag, 30wt%-60wt% of spent ferric oxide desulfurizing agent, and 5wt%-10wt% of sodium humate. The nickel smelting slag is the smelting slag generated in a smeltingprocess for nickel sulfide ores; and the spent ferric oxide desulfurizing agent is a spent desulfurizing agent generated through refining desulfurizing for coal gas. The composite additive for strengthening the direct reduction for the laterite-nickel ores can be used for strengthening the reduction for the laterite-nickel ores, increasing the metallization rate, and promoting the gathering and growth of ferronickel crystalline grains, so that the metal recovery rate of a direct reduction-magnetic separation process is increased.

A plant enhancer includes a ferrocenyl polymer composition, a polyaryl ether nitrile-carbonyl iron magnetic material, silica nanoparticles, and an amino acid powder.

The invention discloses a preparation method of zirconate yttrium ceramic microcrystal opacification glaze with a photocatalysis function. The method comprises the steps that quartz, potassium feldspar, albite, borax, Y2O3, Suzhou clay and lithium carbonate are subjected to batching and then subjected to heat preservation for 20 min to 40 min at the temperature of 1,270 DEG C to 1,290 DEG C, the materials are taken out to be poured into water to be quenched, frit is prepared, and the frit is ground to obtain a material A; the material A, Y2O3, ZrO2 and the Suzhou clay are subjected to batching and then ground to obtain a material B; the material B and a dispersing agent are added into water, and the materials are stirred and mixed to be uniform to obtain glaze slurry; the glaze slurry is glazed on the ceramic surface, firing is conducted through roller kiln oxidizing flame after drying is conducted, and then the Y2ZrO5 microcrystal ceramic glaze with the photocatalysis function is obtained. According to the method, the ceramic glaze is prepared by adopting a firing technology, film coating is not needed, and therefore the prepared functional ceramic glaze is closely bonded with a ceramic base body; a photocatalyst zirconate yttrium generated in the firing process of Y2O3 and ZrO2 is uniformly distributed in the glaze, and the condition that a rainbow effect is generated to influence the glaze attractiveness cannot occur.

The invention discloses a preparation method of zirconate bismuth ceramic microcrystal opacifying glaze with a photocatalysis function, which comprises the following steps: quartz, potassium feldspar, soda feldspar, borax, Bi2O3, Suzhou clay and lithium carbonate are poured into water to be quenched to obtain a frit after being compounded and subjected to heat preservation at 1270 to 1290 DEG C; a material A is obtained after the frit is ground; a material B is obtained after the material A, Bi2O3, ZrO2 and Suzhou clay are compounded; the material B and a dispersant is added into water and is glazed onto the surface of ceramics after being stirred uniformly, and sintering is performed to obtain the zirconate bismuth ceramic microcrystal opacifying glaze with the photocatalysis function. According to the preparation method, the ceramic glaze is prepared by a sintering process without the need of coating, so that the prepared functional ceramic glaze is bonded tightly with a ceramic basal body, and is not easy to fall off, a photocatalyst bismuth zirconate generated by the Bi2O3 and the ZrO2 in the sintering process has uniform distribution in the glaze and crystal flowers with special shapes can be formed rapidly on the surface of the glaze, the surface decoration effect is well.

The invention discloses nanometer Al / Ni / hydroxyl-terminatedpoly butadiene (HTPB) nucleus-shell structure energetic composite particle and a preparation method thereof for solid propellant. The composite particle is a three-layer nucleus-shell structure composite material. The preparation method comprises the steps: using Al power as a nucleus, and Ni as a shell, covering the Al power for first time, and preparing nanometer Al / Ni composite particle; and covering the nanometer Al / Ni composite particle for the second time by using HTPB, and preparing nanometer Al / Ni / HTPB composite particle. Due to the fact the Ni and the HTPB are used for covering the Al powder, oxidation of nanometer Al can be effectively prevented, and activity of the nanometer Al can be maintained. Covering materials are all formula components of the propellant, so that energetic particle structure is optimized, and problem that propellant is bad in compatibility in an application process is solved.

The invention discloses a preparation method of bismuth zirconate microcrystalline ceramic glaze with a photocatalysis function. The preparation method comprises the following steps: blending quartz, potassium feldspar, albite, borax, Bi2O3, Suzhou soil and lithium carbonate; preserving heat at 1,270-1,290 DEG C for 20-40min; taking out and pouring into water for quenching to obtain a frit; grinding the frit to obtain a material A; blending the material A with Bi2O3, ZrO2 and Suzhou soil to obtain a material B; adding the material B and a dispersing agent into water, stirring and uniformly mixing to obtain glaze slip; glazing the ceramic surface with the glaze slip; and firing to obtain a bismuth zirconate ceramic glaze with a photocatalysis function. The glaze prepared According to the invention has good gloss and stable chemical property. According to the invention, the ceramic glaze is prepared by adopting a firing technology, coating is not needed, and thus the prepared functional ceramic glaze is tightly combined with a ceramic base and does not fall off easily; and moreover, crystal flowers of special morphology can be quickly formed on the glaze surface, and the surface decoration effect is good.

The present invention proposes a kind of ultrafiltration membrane surface modifier of the present invention after mixing diatomite and titanium dioxide, then adding in the yttrium sulfate solution, and then calcining after mixing with chlorinated paraffin, wherein, through yttrium sulfate to diatom Soil modification can increase the internal channels of diatomite and increase the active center of diatomite; the decomposition of added chlorinated paraffin during the calcination process can further increase the pores of diatomite, thereby strengthening the performance of ultrafiltration membranes; through this surface modification The surface modification of the ultrafiltration membrane by the agent will form a coating on the surface of the ultrafiltration membrane, thereby reducing the direct contact between the pollutants and the ultrafiltration membrane, thereby reducing the pollution of the ultrafiltration membrane and increasing its anti-pollution ability; through the ultrafiltration membrane of the present invention The removal rate of chemical oxygen demand, total organic carbon and ammonia nitrogen in the sewage after the modification of the ultrafiltration membrane by the surface modifier of the filtration membrane is improved compared with that of the unmodified ultrafiltration membrane. Contains titanium dioxide, which catalyzes the breakdown and degradation of these pollutants.