30results about How to "Small ionic radius" patented technology

The invention relates to a sodium vanadium phosphate composite electrode material as well as a preparation method and application thereof. The sodium vanadium phosphate composite electrode material is a Na3TixV[2-x](PO4)3 / C composite electrode material with a core-shell structure. According to the preparation method, an organic reducing agent and a carbon source are selected, the carbon source can be thermally decomposed into amorphous carbon in the heat treatment process, the formed core refers to Na3TixV[2-x](PO4)3 / C particles, and the shell is a core-shell structure of the amorphous carbon. The unique nano-particle core-shell structure is capable of shortening the sodium ion transport path, improving the ionic conductivity of the material and improving the electronic conductivity through an in-situ coating carbon material, and has a huge promotion effect of improving the electrochemical performance of the Na3TixV[2-x](PO4)3 / C composite electrode material. The composite electrode material disclosed by the invention is widely applied to the technical field of energy storage material and secondary sodium-ion batteries. The invention belongs to the field of electrode materials.

The invention discloses a sodium pyrophosphate modified water purification sludge / zeolite composite adsorbent and a preparation method and application thereof. The preparation method of the sodium pyrophosphate modified water purification sludge / zeolite composite adsorbent comprises the following steps of mixing water purification sludge powder with zeolite powder, then adding the mixture into a sodium pyrophosphate solution for dipping, then putting the mixture into a drying oven for drying, and then adding water to form a sludge mixture, and granulating and calcining the sludge mixture to obtain the sodium pyrophosphate modified water purification sludge / zeolite composite adsorbent. The adsorbent is used for adsorption treatment of ammonia-nitrogen wastewater, and the ammonia-nitrogen removal rate is high.

The invention discloses a hydrogenation regeneration method for waste lubricating oil. The method comprises the following steps: (1) distilling a pretreated raw material, namely waste lubricating oil;(2) feeding a lubricating oil fraction evaporated in the step (1) into a protective agent reactor for a reaction; and (3) feeding a product obtained after the reaction in the step (2) into a hydrogenation reactor filled with a hydrofining catalyst, and carrying out reacting to obtain lubricating oil base oil. The waste lubricating oil treated by the method can be used for producing standard lubricating oil base oil.

The invention relates to an alkali metal enhanced bismuth titanate-based up-conversion fluorescent material and a preparation method thereof. The chemical formula of the material can be recorded as Bi4-xRExTi3O12:yM (x is more than 0 and less than or equal to 0.5, y is more than or equal to 0 and less than or equal to 2.5), wherein RE can be one or more up-conversion rare earth elements of Ho, Er, Tm, Sm and Yb, and M can be one or more alkali metal elements of K, Li and Na. The alkali metal ion doped bismuth titanate material is excited by 980nm infrared light by adopting a chemical solution method, and the emission intensity can be improved by more than two times compared with the emission intensity when the bismuth titanate material is not doped with the alkali metal ions. The phosphor is prepared by adopting a chemical solution method, the technological process is simple, and the operation is convenient. The synthesized phosphor has high luminous efficiency, and has good application prospects in the aspects of up-conversion red lasers, fluorescence labeling, anti-counterfeiting and the like.

The invention provides a multi-element stable zirconium oxide corrosion-resistant thermal barrier coating material which is prepared by performing mixed ball milling on a main component and stabilizer, wherein the main component is ZrO2; the stabilizer is a mixture of Nb2O5, TiO2 and rare metal oxide; the mol ratio of the Nb2O5 to the TiO2 to the rare metal oxide to the ZrO2 in the multi-element stable zirconium oxide corrosion-resistant thermal barrier coating material is x:1.5x:x:(100-3.5x), and 3<=x<=7; and the rare metal oxide is Lu2O3 or In2O3. The multi-element stable zirconium oxide corrosion-resistant thermal barrier coating material provided by the invention has excellent Na2SO4-V2O5 molten salt corrosion resistance and excellent calcium / magnesium / aluminum silicate molten glass corrosion resistance.

The invention relates to the technical field of photovoltaics, and provides an anti-PID effect assembly. The anti-PID effect assembly comprises a glass substrate and a tin oxide layer arranged on any surface of the glass substrate. The ion radius of tin ions is smaller than that of sodium ions and calcium ions, so that the ion potential energy is higher, the binding capacity with oxygen atoms is higher, the tin ions have an obvious aggregation effect, and a glass network structure can be enhanced and is more compact, and accordingly migration of the sodium ions and the calcium ions is limited, carbonate containing the sodium ions and the calcium ions is not formed on the surface of the glass, the glass is protected from serious erosion, the weather resistance of the glass surface and a glass coating can be obviously improved, and the PID attenuation effect on the upper surface of the glass is effectively reduced. Meanwhile, the tin oxide layer has smaller influence on the light transmittance of the whole glass, so that the obtained assembly is stronger in PID effect resistance, excellent in overall performance and wide in application.

The invention discloses a color changing method of an artificial sapphire crystal. According to the method disclosed by the invention, coloring ions are dispersed into the artificial sapphire crystal through a relatively low temprature heat treatment technology, so that the color and the transparency of the sapphire crystal are improved. When the sapphire crystal treated by the method disclosed by the invention, colorless sapphire crystals can be changed into crystals with a plurality of colors, the color and luster are uniform and the transparency is better; According to the method, the treatment process is simple and equipment is simple, and the pollution to the environment is avoided. The ornamental value and the market economic value of sapphires treated by the method can be greatly improved.

The invention belongs to the technical field of nanometer materials, and in particular relates to a composite material, a preparation method thereof and a quantum dot light-emitting diode. The composite material includes quantum dots and silver ethylenediamine tetraacetate combined on the surface of the quantum dots; wherein, silver ions in the silver ethylenediamine tetraacetate combine with anions on the surface of the quantum dots. In the composite material, the surface plasmon resonance effect of silver on the surface of the quantum dot can induce local electromagnetic field enhancement, thereby increasing the light output coupling of the quantum dot and the recombination luminescence rate, and the composite material is used for the quantum dot luminescence of the quantum dot light-emitting diode layer, which can effectively improve the luminous efficiency of the device, thereby improving the performance of the device.

The invention discloses a fluorine-free slagging agent. Bauxite is taken as a main raw material, silica, a fluorine-free iron-containing compound and quicklime are taken as auxiliary materials, and the content of each of effective ingredients of the bauxite is controlled within the following range through the auxiliary materials: Al2O3 accounts for 43-50% of the weight of the fluorine-free slagging agent, SiO2 accounts for 11-13% of the weight of the fluorine-free slagging agent, Fe2O3 accounts for 15-20% of the weight of the fluorine-free slagging agent and CaO accounts for 2-4% of the weight of the fluorine-free slagging agent. The fluorine-free slagging agent disclosed by the invention can solve the harm to an environment caused by a fluorine-containing slagging agent; when the fluorine-free slagging agent is actually used, no slag blocks exist in poured furnace slag, the slag flows, the furnace slag at an end point has no phenomenon of returning to dry state, the slag flow of the poured slag has no iron openwork, and when the slag is poured, the amount of molten iron entrained in the slag is small; and compared with the conventional fluorine-containing slagging agent, by using the fluorine-free slagging agent disclosed by the invention, consumed steel and iron material per ton of steel can be reduced by 4-5kg / t, and the fluorine-free slagging agent is more environment-friendly.

The invention relates to a cathode material and a preparation method thereof, particularly a moderate-temperature solid oxide fuel battery doped double-perovskit-structure cathode material and a preparation method thereof. The invention aims to solve the problem that the catalytic oxygen reduction reaction capacity of the existing solid oxide fuel battery cathode material La1-xSrxMnO3 acutely reduces under moderate temperature conditions. The moderate-temperature solid oxide fuel battery doped double-perovskit-structure cathode material is an alkaline earth element Sr-doped double-perovskite powder material, and the chemical formula is EuBa1-xSrxCo2O5+delta. The method comprises the following steps: 1. weighing materials according to the chemical formula EuBa1-xSrxCo2O5+delta; 2. grinding to obtain a mixture; and 3. calcining to obtain the alkaline earth element Sr-doped double-perovskite powder material of which the chemical formula is EuBa1-xSrxCo2O5+delta. The invention is mainly used for preparing the moderate-temperature solid oxide fuel battery doped double-perovskit-structure cathode material.

The invention belongs to the technical field of preparation of electrochemical sensors, and specifically discloses an electrochemical sensor with self-cleaning ability, including an electrode core and a new composite material based on MTOF (M refers to doped metal elements), and the composite material is attached to on the surface of the electrode core. The preparation method of the sensor is simple, time-saving, low-cost, and environmentally friendly, especially the polymer and the residue of the detected substance attached to the surface of the electrode core after detection can be oxidized under the conditions of ultraviolet light and visible light. The regeneration and self-cleaning effect of the electrochemical sensor under visible light can be achieved. The electrochemical sensing platform regenerated under visible light not only reduces the cumbersome procedures of electrode grinding and modification, but also saves the cost of modification materials, and the descaling and regeneration of electrodes prolongs the service life of electrodes. It is used for the simultaneous detection of environmental pollutants hydroquinone and catechol, with simple operation, good selectivity, high sensitivity and low detection limit.

The invention discloses a method for hydrogenation regeneration of waste lubricating oil. The method comprises the following steps: (1) distilling the pretreated raw material waste lubricating oil; (2) putting the distilled lubricating oil fraction in step (1) into a protective agent reactor for reaction; (3) distilling the step (2) ) The reacted product enters a hydrogenation reactor equipped with a hydrorefining catalyst for reaction to obtain a lubricating oil base oil. The method of the invention treats the waste lubricating oil to produce the lubricating oil base oil meeting the standard.

The invention provides a multi-component stable thermal-corrosion-resistant zirconia coat material. The coat material is obtained through mixing a main agent with a stabilizer and carrying out ball milling, the main agent is ZrO2, the stabilizer is a mixture of Ta2O5, In2O3, Al2O3 and TiO2, the molar ratio of Ta2O5: In2O3: Al2O3: TiO2: ZrO2 in the multi-component stable thermal-corrosion-resistant zirconia coat material is x:x:x:x:(100-4x), and x is not greater than 4 and not lower than 2. Tetragonal phase ZrO2 is finally obtained through adopting Ta2O5, In2O3, Al2O3 and TiO2 as the stabilizer to stabilize ZrO2 in the invention. The multi-component stable thermal-corrosion-resistant zirconia coat material has an excellent Na2SO4-V2O5 molten salt corrosion resistance, and an excellent calcium magnesium aluminosilicate molten glass corrosion resistance.

The invention relates to a remanufactured electric porcelain material and a manufacturing method thereof by recycling existing electric porcelain waste materials. There is an impurity problem in the reuse of the waste generated in the manufacturing process of electric porcelain products. The present invention weighs 50-73 parts of electric porcelain waste, 15-25 parts of bauxite, 3-17 parts of clay, 1-8 parts of potassium feldspar, 0.5-2 parts of zinc oxide, and 1-1.5 parts of fluorite to form a mixed composition; According to the weight ratio of composition: alumina ball stone: water = 1:1.5:1, the composition, alumina ball stone and water are mixed for ball milling until the balance of the million-hole sieve is less than 0.2%; the raw materials are filtered mud, The mud is practiced and aged for 48 hours, then shaped, dried, glazed, and finally fired at a temperature of 1200-1250°C. The present invention adds zinc oxide and fluorite to the formula for reusing electric porcelain waste to form a low-melting substance with impurities at high temperature, improves sintering performance, and promotes the formation of mullite crystal phase, which not only eliminates the influence of impurities, but also improves Improve the porcelain mechanical strength and hot and cold abrupt change.

The invention discloses a method for recycling stainless steel pickling waste sulfuric acid solution, which specifically comprises the following steps: (1) pretreating stainless steel pickling waste sulfuric acid, and using a filter of 1 micron level to fine filter to remove fine particle impurities to obtain the pretreated treatment fluid. (2) Separation and recovery of sulfuric acid and metal salt solution are performed on the pretreatment solution with periodic reverse pulse power supply diffusion dialysis-electrodialyzer to obtain recovered acid and raffinate respectively. (3) Recover the acid and return it to the production line of the workshop for reuse; add appropriate amount of sodium phosphate and alkaline agent to the raffinate to remove heavy metal impurities such as chromium, and then oxidize to prepare the water treatment agent polyferric sulfate. The method of the invention utilizes a periodic reverse pulse power supply diffusion dialysis-electrodialyzer to realize high-efficiency separation of acid and metal ions. The technical method has low operating costs, fully recycles resources, and has good economic and environmental benefits.

The invention discloses high-purity strontium-calcium-europium nitride solid solution powder and a preparation method thereof. The general formula of the high-purity strontium-calcium-europium nitridesolid solution powder is (Sr1-x-yCaxEuy)2N (x is more than or equal to 0 and less than or equal to 0.45, and y is more than or equal to 0.008 and less than or equal to 0.025). The preparation methodcomprises the steps that S1, Ca, Sr and Eu with the purity larger than or equal to 99.99% are weighed and placed in a vacuum smelting furnace, argon is introduced, melting and pouring are conducted atthe temperature of 700-880 DEG C, and an alloy cast ingot is obtained; S2, after the surface of the cast ingot is cleaned, the cast ingot is placed in a hydrogen decrepitation furnace, hydrogen withthe purity larger than or equal to 99.99% is introduced, the cast ingot is heated to 200-400 DEG C, and the cast ingot is broken and dehydrogenated to obtain alloy coarse powder; S3, the temperature is reduced, liquid nitrogen with the purity larger than or equal to 99.99% is introduced, the temperature is increased to 580 DEG C, the pressure ranges from 0.5 Mpa to 0.8 Mpa, heat preservation is conducted for 5 hours, and high-purity strontium-calcium-europium nitride solid solution coarse powder is obtained; and S4, the coarse powder is transferred into a glove box, and the coarse powder is crushed in a crusher coated with a tungsten carbide coating to obtain a powder finished product.