66 results about "Sb element" patented technology

The invention discloses a three-dimensional particle electrode loaded with catalyst active carbon and a preparation method thereof. The electrode consists of particle active carbon and a TiO2 solid solution compound catalyst which is loaded on the particle active carbon and is doped with Sn and Sb elements. The method comprises the steps of particle active carbon pretreatment, catalyst preparation, soaking for aging, drying and roasting for activating. The three-dimensional particle electrode loaded with the catalyst active carbon prepared with the method has the characteristics of high pollutant removing rate, high electrocatalytic activity, high yield of hydroxyl radicals, little loss of a catalyst and the like; moreover, the preparation method is simple, noble metal catalysts are not used, used raw materials are widely available, the manufacturing cost is low, and secondary pollution is avoided. When the three-dimensional particle electrode loaded with the catalyst active carbon prepared with the method is applied to a three-dimensional electrode reactor, non-biodegradable organic waste water can be treated efficiently.

The invention discloses a rapid diffusion welding connection method for a skutterudite thermoelectric material and an electrode, and relates to a diffusion welding connection method. The method aims to solve the problems of Sb element volatilization and element diffusion when the existing skutterudite thermoelectric material is connected with an electrode. The method comprises the steps of takingan electrode, cleaning a to-be-welded surface, electroplating an alloy barrier layer on the surface of the to-be-welded surface of the electrode, cleaning the to-be-welded surface of the skutteruditethermoelectric material, and performing diffusion welding. The barrier layer is prepared on the electrode side through an electroplating method, diffusion welding is achieved between the barrier layerand the skutterudite thermoelectric material under the relatively low pressure and at the relatively low temperature, element diffusion of weld joint elements and skutterudite does not exist in the process, and Sb element volatilization and element diffusion can be prevented. The method is suitable for welding the skutterudite thermoelectric material and the electrode.

The invention provides a preparation method of a tin oxide fiber reinforced silver-based electric contact alloy. The method specifically includes: firstly preparing a Sb element doped tin oxide precursor gel, adding the gel into a fiber forming agent to prepare a spinning solution, and conducting electrostatic spinning to obtain Sb element doped SnO2 fiber; then subjecting the fiber and silver powder to mechanical mixing, and carrying out pressing-sintering-extrusion on a silver-tin oxide fiber mixture by a traditional process, thus obtaining the tin oxide fiber reinforced silver-based electric contact alloy. The method provided by the invention improves the electroconductivity of tin oxide through effective doping of the Sb element, reduces the resistance of a contact alloy body, at the same time enables fibrous distribution of a second phase oxide and reinforcement of the oxide in a silver matrix, solves the problems of large contact resistance, high temperature rise and large oxide loss in traditional oxide particle reinforced silver-based electric contact materials during arc erosion, improves the arc erosion resistance of silver-based oxide electric contact alloy, and also expands the application scope of the silver-based oxide electric contact alloy.

The invention relates to a hot rolled steel plate for double-faced enamel and a production method of the hot rolled steel plate and belongs to the technical field of iron-base alloy. The production method of the hot rolled steel plate comprises the steps of: controlling the ingredients and mass percents of the hot rolled steel plate as follows: 0.02-0.1% of C, not larger than 0.1% of Si, 0.2-1.0% of Mn, not larger than 0.02% of P, 0.005-0.035% of S, 0.01-0.1% of Als, 0.002-0.01% of N, 0.01-0.1% of Ti, 0.01-0.05% of Sb, and the balance of ferrum and inevitable impurities; and simultaneously controlling the heating temperature of the continuous casting slab of the hot rolled steel plate to be 1150-1230 DEG C, controlling the temperature of a precise rolling inlet to be 1020+ / -20 DEG C, controlling the precise rolling ending temperature to be 840-920 DEG C, and controlling the coiling temperature after the precise rolling operation to be 550-650 DEG C. The hot rolled steel plate and the production method of the hot rolled steel plate fully utilize the inevitable products C, S and N elements of steelmaking production to replace the function of the Ti element to reduce the dosage of the Ti element; and a proper dosage of Sb element is added to prevent the scales detonation of the enamel and reduce the steelmaking cost, and the hot rolled steel plate with good double-faced enamel processing performance and small strength performance change after enamel is obtained.

The invention relates to a preparation method of a high-mechanical strength Ti-based double-interlayer anode; the preparation method is characterized in that a pure Ti plate or a Ti alloy plate is taken as an electrode substrate, a mixed alcohol solution of Sn salt is taken as an impregnation solution, and the electrode substrate and the impregnation solution are doped with Sb elements at the same time, so that a Ti-Sb2O3-SnO2 compound catalytic anode is obtained; after the Ti-Sb2O3-SnO2 compound catalytic anode is prepared, a yellow conductive layer TiO is slowly formed in a water solution, and the Ti-TiO / Sb2O3-SnO2 anode having double interlayers of TiO / Sb2O3 is finally formed; the method takes the mixed alcohol solution as a solvent so as to enable a surface layer of an electrode to be evenly and firmly coated; TiO is good in electrical conductivity; the binding force between the TiO and SnO2 is higher than that between pure Ti and the SnO2, so that the mechanical strength of the coated electrode is further improved. The method adopts the pure Ti plate or the Ti alloy plate as the substrate, thus having the advantages of being low in price, acid-resistant, corrosion-resistant and stable in mechanical properties; furthermore, a large specific surface area is obtained by oxalic acid etching, so that a material guarantee is provided for preparing the electrode with high mechanical strength.

The invention relates to the technical field of hydrometallurgy, and especially relates to a method for reducing the content of Cu, Cd, Ni, Co and Sb in a zinc hydrometallurgy zinc sulfate solution. The method comprises the following steps: detecting and recording the content of components in the zinc sulfate solution, and adjusting the pH value of the zinc sulfate solution to 2.5-3.5 to make zinc sulfate meet condition requirement in subsequent purifying technologies, improves the removal rate of Cu, Cd, Ni, Co and Sb elements in zinc sulfate and improve the purity of the zinc sulfate solution; adding a cobalt removal agent in the treatment process, stirring, adding zinc powder, stirring, and filtering to simultaneously remove Cu, Cd, Ni, Co and Sb elements from zinc sulfate in order to reduce the content of impurity elements in zinc sulfate, improve the purity of zinc sulfate, complete the purification process at 50-60DEG C and reduce the energy consumption in the purification process.

The invention provides a potassium sodium niobate-based piezoelectric ceramic, and a preparation method and an application thereof, and belongs to the technical field of piezoelectric ceramics. The general formula of the potassium sodium niobate-based piezoelectric ceramic is K0.48Na0.52Sb0.10Nb0.90-xMnO2, x is greater than or equal to 0.2 and less than or equal to 0.8, and x is a mass fraction. Aspecific amount of manganese oxide added as a sintering aid effectively reduces the volatilization amounts of Na2O and K2O in the sintering process, so that the prepared potassium sodium niobate-based piezoelectric ceramic has good compactness and is not prone to damp, and the technical defect of poor compactness of potassium sodium niobate-based piezoelectric ceramics doped with the Sb element in the prior art is overcome. Results of the embodiment show that the strain of the potassium sodium niobate-based piezoelectric ceramic prepared in the invention reaches 0.15% in a 40 kV / cm electric field, and reaches 0.23% in a 70 kV / cm electric field, and the density reaches 98%.

The invention relates to the technical field of magnesium alloy materials, in particular to a high-strength and heat-resistance Mg-Zn-Al-Y-Sb magnesium alloy and a preparation method thereof. The high-strength and heat-resistance Mg-Zn-Al-Y-Sb magnesium alloy comprises the following components: 2-4 wt.% of Zn, 2-4 wt.% of Al, 0.5-2 wt.% of Y, 0.2-1 wt.% of Sb, the total quantity of impurity elements Si, Fe, Cu and Ni less than 0.02 wt.%, and the balance of Mg. The preparation method of the high-strength and heat-resistance Mg-Zn-Al-Y-Sb magnesium alloy comprises two processes of smelting and heat treatment, wherein the smelting process comprises the steps of material baking, Mg smelting, Zn and Al adding, Y adding, Sb adding, refining and casting; and the heat treatment process comprises solid solution treatment and aging. The Sb elements with a certain mass are added in a Mg-Zn-Al-Y alloy, so that the casting structure of the alloy is effectively improved, and grains are refined; anda compact second phase with high melting point and high heat stability is formed, so that the room-temperature and high-temperature mechanical performances of the alloy are improved.

The invention relates to a catalyst for butene oxidative dehydrogenation preparation of butadiene and a preparation method thereof. The catalyst mainly solves the problem that the existing catalyst for butene oxidative dehydrogenation preparation of butadiene has low selectivity to butadiene and produces more deep oxidative products. The catalyst component comprises Fe<3+> and Sb elements, Fe<3+> exists in at least one form of Fe2O3 and Fe2O4<2->, Li mass content of the catalyst is less than 900ppm, Ca mass content of the catalyst is less than 900ppm and Ti mass content of the catalyst is less than 900ppm. The catalyst solves the problem, realizes efficient and stable preparation of a butadiene product, reduces deep oxidative product CO2 and can be used for industrial production of butadiene through butene oxidative dehydrogenation.

The invention discloses application of an Sb element in a high-strength nodular cast iron tile cover. On the basis of the weight of the melt, 0.005-0.015% of stibium and 0.3-0.6% of manganese are added into the melt in a casting ladle. Compared with the traditional application of adding massive Cu, Cr and other alloy elements, copper, chrome and other alloy elements are substituted by stibium so that the consumption is obviously reduced, the pearlite content of the nodular cast iron is stabilized above 60%, and the pearlite distribution is uniform without segregation; and by using the stibium, the Si element content in the nodular cast iron is properly increased, the Si content range is widened, the boiling point of the stibium is much lower than that of copper and chrome, and the stibium waste is more beneficial to reutilization, thereby saving the resources.

The invention relates to a nanofiber with the specific surface area capable of being increased. The high-surface-area nanofiber has a nuclear-shell structure, a nuclear layer is made of titanium dioxide (TiO2), a shell layer is made of antimony tin oxide (ATO), the antimony tin oxide in the shell layer is SnO2 doped with a Sb element, wherein the mass percentage of the Sb element is 20-80%; the fiber structure is of a nuclear-shell structure formed by the process that the titanium dioxide is coated with the antimony tin oxide, wherein the mass percentage of the TiO2 is 20-80%, the mass percentage of the ATO is 20-80%; the average diameter of the nanofiber which is of the nuclear-shell structure is 100-450nm. The nanofiber which is of the nuclear-shell structure is prepared by using an electrostatic spinning technique, the preparation method is simple and easy to implement, and according to the obtained nanofiber material, the cost of conductive materials is lowered, and the nanofiber has a great specific surface area.