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

The invention provides a boron-doped garnet type cubic phase structural LLZO lithium ion conductor. The structural expression formula of the boron-doped garnet type cubic phase structural LLZO lithium ion conductor is Li7La(3-x)BxZr2O12, wherein the x is 0.2 to 0.6. The boron-doped garnet type cubic phase structural LLZO lithium ion conductor has relatively high ionic conductivity and has good electrochemical stability on metallic lithium, can be used as a solid electrolyte of an all-solid-state lithium battery or a lithium ion battery, and can also be used as the solid electrolyte of a metallic lithium-air or metallic lithium-sulphur battery.

The invention discloses a method for recovering a stainless steel acid pickling waste sulfuric acid solution. The method includes steps: pretreating the waste sulfuric acid, and finely removing fine impurities by using a 1-micron-size filter to obtain a pretreated solution; (2) separating and recovering sulfuric acid and a metal salt solution from the pretreated solution by utilizing a periodic reverse pulsed power supply diffusion dialysis-electrodialyzer to obtain recovered acid and residual liquid, respectively; (3) returning the recovered acid to a production line of a workshop for reuse,and after adding a proper amount of sodium phosphate and an alkali agent into the residual liquid to remove heavy metal impurities such as chromium, oxidizing the residual liquid to prepare polyferricsulfate which is a water treatment agent. The periodic reverse pulsed power supply diffusion dialysis-electrodialyzer is utilized for efficient separation of acid from metal ions. The method is low in cost, resources can be fully recovered, and economic and environment protection benefits are good.

The invention discloses a paraffin hydrofining catalyst and a preparation method thereof. A carrier of the paraffin hydrofining catalyst comprises aluminum oxide, layered clay and a Y-type molecular sieve; nickel and molybdenum are taken as active metal components; taking the mass of the paraffin hydrofining catalyst as a reference, the paraffin hydrofining catalyst comprises 2.0%-35.0% of molybdenum oxide, and 0.5%-20.0% of nickel oxide; the dispersity of the active metal components is as follows: IMo/IAl is 0.15-0.30, and INi/IAl is 0.07-0.15. The paraffin hydrofining catalyst is high in active metal utilization rate, high in active metal dispersity and high in activity.

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 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 preparation of electrochemical sensors, and specifically discloses an electrochemical sensor with self-cleaning ability. The electrochemical sensor comprises an electrode core and a novel composite material based on MTOF (M refers to a doped metal element), and the composite material is attached to the surface of the electrode core. The preparation method of the sensor is simple, time-saving, low in cost and environmentally friendly. In particular, the residue of polymers and detected substance contained in the sensor and attached to the surfaceof the electrode core after detection can be oxidized under ultraviolet light and visible light conditions, thereby realizing the regeneration and self-cleaning effects of electrochemical sensor undervisible light. An electrochemical sensing platform regenerated under visible light not only reduces the tedious process of electrode polishing and modification, but also saves the cost of modifying materials, and the descaling regeneration of the electrode prolongs the service life of the electrode. The sensor is applied to the simultaneous detection of environmental pollutants, that is, hydroquinone and catechol, the operation is simple and convenient, the selectivity is good, the sensitivity is high, and the detection limit is low.

The invention discloses a dry pressing forming method of Nixing pottery. The dry pressing forming method of the Nixing pottery includes the following steps that (1) east clay and west clay are mixed and crushed to 80-120 meshes, so that clay powder is obtained; (2) 0.02-0.05% by weight of sodium tartrate and 0.01-0.02% of silicone emulsion are added into the argil powder, water is added until thewater content is 5-10%, and a preform body is obtained after uniform mixing; and (3) the preform body is injected into a metal mold cavity and pressed for 10-30 s at the front pressure of 15-25 MPa, and a formed green body is obtained. The small amount of sodium tartrate and silicone emulsion are added into the traditional Nixing pottery clay, the fluidity of the preform body is greatly increased,friction force among clay particles and between the clay and a mold wall is reduced, and therefore the formed green body with uniform density is obtained. As the density of the formed green body is uniform, deformation and cracking are greatly reduced in the subsequent firing process, and the yield is improved.

The invention discloses a bis-terpyridine based bi-metal polymer and a preparation method thereof. A bis-terpyridine based metal complex is obtained through a self-assembly reaction of a transition metal salt and a bis-terpyridine ligand compound, the bis-terpyridine based metal complex reacts with excessive WO4<2-> solution, so as to obtain the bis-terpyridine based bi-metal polymer with high stability and high catalytic activity, and the polymer has wide application prospects in the field of catalysis.

The invention discloses a three-way ceramic valve which comprises a main pipeline, a branch pipeline and an inner pipeline. A movable pipe is arranged on the lower side of a connecting flange. The main pipeline is arranged on the lower side of a movable rod. Telescopic supporting rods are arranged on the left side and the right side of the main pipeline, and the branch pipeline is arranged on thelower side of the main pipeline. The movable pipe and the branch pipeline are connected through the telescopic supporting rods. The main pipeline is internally provided with the inner pipeline. A first motor is arranged in an interlayer between the inner pipeline and the main pipeline. A static blocking cover is arranged in the inner pipeline. A movable blocking cover is arranged on the lower sideof the static blocking cover. A transfer main pipe is arranged in the branch pipeline and directly faces the lower side of the main pipeline. Transfer branch pipes are arranged on the left side and the right side of the transfer main pipe correspondingly. Solenoid valves are arranged in the transfer branch pipes. Solenoid valve controllers are arranged on the upper sides of the solenoid valves. The three-way ceramic valve can replace a metal valve, compared with the metal valve, the deformation of the ceramic valve is small, and the ceramic valve has high bonding strength.

The invention discloses a paraffin hydrofining catalyst and a preparation method thereof. The catalyst is prepared by taking aluminum oxide as a carrier, and nickel and molybdenum as active metal components; taking the mass amount of the catalyst as a reference, the catalyst comprises 2.0%-35.0% of molybdenum oxide, and 0.5%-20.0% of nickel oxide; and the dispersity of the active metal componentsis as follows: IMo/IAl is 0.14-0.30, and INi/IAl is 0.07-0.15. The paraffin hydrofining catalyst is high in active metal utilization rate, high in active metal dispersity and high in activity.

The invention discloses an L-A-S-H nanogel precursor for inhibiting an alkali-aggregate reaction, a preparation method and application thereof. The L-A-S-H nanogel precursor is prepared from the following components in parts by mass: 15 to 30 parts of lithium hydroxide; 20 to 40 parts of nano silicon dioxide; 20 to 35 parts of nano aluminum oxide; 500 to 1000 parts of deionized water; and 100 to 200 parts of absolute ethyl alcohol. According to the invention, a hydrothermal synthesis method is adopted for preparation, so that the preparation method is mature and stable, the reaction process is simple, operation is convenient, energy consumption is low, treatment is easy, and secondary pollution is avoided; and the L-A-S-H nanogel precursor can effectively inhibit concrete alkali-aggregate reaction, can also effectively inhibit development of microcracks in the concrete, can also play a role in repairing the part subjected to the alkali-aggregate reaction, enables the size of the part to be kept stable, and has important significance for improving the durability of the concrete.

The invention relates to a cementing material for inhibiting metamorphic rock alkali aggregate reaction and a preparation method thereof. The cementing material comprises the following components: cement, silica fume, phosphorus slag powder, waste glass powder, fly ash, an early strength activator and an AZK auxiliary agent according to a mass ratio of (400-620): (50-100): (90-105): (75-250): (89-193): (3.0-5.0): (7.0-10.0). The cementing material for inhibiting metamorphic rock alkali aggregate reaction is developed through a creative synergistic effect of a cementing material compounding technology, a cementing material secondary hydration process control technology and a cementing material excitation technology, the performance of inhibiting metamorphic rock alkali aggregate reaction is excellent, the comprehensive utilization of industrial wastes such as silica fume, fly ash, phosphorus slag powder and waste glass powder is further enhanced, and the cementing material is green and environment-friendly.

The present invention provides a method for selective fluorescence recognition and colorimetric recognition of fluorine ions by using a perimidine onium anion receptor. According to the present invention, the fluorescence emission spectrum of the perimidine onium anion receptor is significantly enhanced on the basis of the zero fluorescence after fluorine ions are added to a DMSO solution while the color of the solution is colorless from the yellow color so as to achieve the naked eye recognition; the method has advantages of real-time detection, easy operation, high sensitivity, simple detection equipment, and the like; and the perimidine onium anion receptor can achieve the effective selective recognition of the fluorine ions in the mixed solution of DMSO and water, such that the perimidine onium anion receptor shows the water phase fluorine ion recognition application prospects.

The invention discloses a paraffin hydrofining catalyst and a preparation method thereof. The method comprises the following steps: (1) uniformly mixing pseudo-boehmite and layered clay; (2) mixing aY-type molecular sieve with water, and pulping to obtain a uniformly dispersed slurry; (3) adding the slurry obtained in the step (2) into a mixture obtained in the step (1), mixing, kneading, molding, drying and roasting to obtain a carrier; (4) impregnating the catalyst carrier obtained in the step (3) with a phosphorus-containing solution, and then drying; and (5) impregnating the carrier driedin the step (4) with an active metal solution containing a carboxyl-containing polymer, and then drying and roasting to obtain the paraffin hydrofining catalyst. The paraffin hydrofining catalyst prepared by the method is high in active metal utilization rate, high in active metal dispersity and high in activity.