9 results about "Binary compound" patented technology

The application relates to a salt-resistant oil displacement system for alkali-free binary compound flooding and a preparation method and application thereof, and belongs to the technical field of oil production. The oil displacement system is composed of the following components: 0.1-0.5 wt% of amino silane coupling agent modified xanthan gum, 0.1-0.5 wt% of a surfactant, 0.05-0.2 wt% of a high-temperature stabilizer, 0.05-0.1 wt% of chitosan quaternary ammonium salt, 0.05-0.1 wt% of silane coupling agent modified nano silicon dioxide, and the balance of water; the high-temperature stabilizer is one or more of polyvinyl alcohol, polyethylene glycol and polypropylene glycol. The oil displacement system provided by the application is compounded by taking xanthan gum as a core compound and a surfactant, is an oil displacement system for alkali-free binary compound flooding, utilizes the high-salt resistance of xanthan gum, and improves the defects of poor water solubility, easy decomposition at high temperature and easy degradation by bacteria, and has obvious improvement in profile control performance and can be used in a high-salt high-temperature environment.

The invention relates to the technical field of optical materials, in particular to a boron-containing quantum dot and a preparation method thereof, an optical component and electronic equipment. The boron-containing quantum dot comprises a core layer and a shell layer coating the core layer, at least one of the core layer and the shell layer includes boron and a Group II-VI semiconductor compound. The boron is doped into at least one of the core layer and the shell layer in an interlattice doping manner, and in the core layer and / or the shell layer, the boron is connected with non-metallic elements in the II-VI group semiconductor compound through chemical bonds. The boron-containing quantum dot further comprises an adsorption layer located on the surface of the shell layer, and the adsorption layer comprises boron. The II-VI group semiconductor compound comprises at least one of a II-VI group binary compound, a II-VI group ternary compound and a II-VI group quaternary compound. The thermal stability of the quantum dot material can be improved.

The embodiment of the application relates to the technical field of binary compounds of nitrogen and metal, and particularly relates to a preparation method of uranium nitride particle fuel and the uranium nitride particle fuel. The application provides a preparation method of uranium nitride particle fuel, which comprises the following steps: treating molybdenum-niobium metal powder, so that the molybdenum-niobium alloy powder is coated with a zirconium coating; preparing uranium oxide particles with uniform particle size; reacting the uranium oxide particles with ammonia to obtain uranium nitride particles; mixing the molybdenum-niobium alloy powder and the uranium nitride particles, so that the two are uniformly distributed in the obtained mixture; sintering the mixture, so that the obtained compact is formed into a dense structure; and forming the compact to obtain the uranium nitride particle fuel. The application also provides a uranium nitride particle fuel. The fuel prepared by the method of the application can improve the damage resistance of the fuel under strong radiation conditions, reduce the irradiation swelling of the fuel, ensure the low release of the fuel, and fully meet the application requirements in space nuclear reactors.

The invention provides a method for recovering germanium-selenium-arsenic and arsenic-selenium-chalcogenide glass cold working mixed chips, which utilizes the physicochemical properties of all components in the germanium-selenium-arsenic and arsenic-selenium-chalcogenide glass cold working mixed chips, introduces a segmented vacuum fractionation process, and enables water, oil and other low-boiling-point pollutants in raw materials to be recycled at different heating and condensing temperatures, so as to obtain the germanium-selenium-arsenic and arsenic-selenium-chalcogenide glass cold working mixed chips. The arsenic-selenium compound and the elementary substance enter a gas phase in sequence, and separation from the Ge-Se binary compound and the high-boiling-point impurities is achieved; the fractionation residue Ge-Se binary compound is subjected to oxidizing roasting, germanium concentrate and coarse selenium dioxide are obtained, the direct recovery rate of germanium reaches 96.5%, and the comprehensive direct recovery rate of selenium reaches 97.8%. The method effectively solves the problem of difficult recovery of germanium-selenium-arsenic and arsenic-selenium chalcogenide glass cold processing mixed chips, realizes green and efficient cyclic utilization of rare and precious metal elements in the material, is simple in process and environment-friendly, and provides support for benign development of the chalcogenide glass industry in China.

The invention belongs to the field of chemical informatization, provides a rare earth compound prediction method based on a pre-training fine-tuning graph neural network, and aims to solve the problem of low prediction efficiency caused by combination explosion and complex properties. According to the main scheme, binary compound combinations of rare earth elements and other elements are generated through permutation and combination, and screening is conducted according to chemical rules and a known compound database to obtain a candidate rare earth compound set; converting each compound in the candidate rare earth compound set into graph structure data comprising node features and edge features, wherein the node features comprise rare earth mark variables used for marking rare earth elements; inputting the graph structure data into a pre-trained fine-tuned graph neural network model to output prediction formation energy and prediction feasibility probability of each candidate rare earth compound; and calculating a comprehensive score of each candidate rare earth compound according to the prediction formation energy and the prediction feasibility probability, and sorting and screening the candidate rare earth compounds according to the comprehensive scores.

This invention relates to the field of thermoelectric materials technology, and discloses a bismuth telluride-based thermoelectric material, its preparation method, and its applications. It includes a matrix and a dopant material; the matrix is ​​bismuth telluride; the dopant material is selected from binary compound materials. The thermoelectric material of this application improves electrical transport performance and increases the power factor by incorporating binary compound materials into the matrix material and combining zone melting, ultrasonic exfoliation, and hot-pressing sintering processes. It also introduces numerous dislocations, grain boundaries, and other defects to effectively reduce lattice thermal conductivity and optimize thermoelectric performance; simultaneously, it significantly improves the Vickers hardness of the bismuth telluride-based thermoelectric material.

The invention belongs to the technical field of PVC coated cloth, and particularly relates to antimony-free high-flame-retardant weldable coated cloth and a preparation method thereof. The coating cloth is PVC coating cloth, a large amount of screening is carried out, a binary compound composed of halogen-free phosphate ester WSFR-9702 and tricresyl phosphate TCPL is obtained and used as a flame retardant plasticizer, a ternary compound composed of a phosphorus flame retardant, a molten drop inhibiting flame retardant and a carbon forming framework filler is used as a flame retardant, and the PVC coating cloth coating is prepared through high mixing. The coating cloth simultaneously meets the requirements of high flame retardance of the BS7837 standard, the requirements of high environmental protection, no antimony, welding resistance and other comprehensive performance of REACH regulations, so that the coating cloth has the advantages of environmental protection, cost reduction and quality improvement, the comprehensive competitive advantage of products is improved, and the coating cloth has great industrial application value.

Provided in the present disclosure are a modified nickel-cobalt-aluminum ternary positive electrode material and a preparation method therefor, and a lithium battery. The modified nickel-cobalt-aluminum ternary positive electrode material provided by the present disclosure comprises a bulk phase material and a coating layer that coats the surface of the bulk phase material, wherein the coating layer is composed of boric acid and at least one of a transition metal nitride containing an effective metal and an aluminum-containing metal oxide. In the present disclosure, boric acid and at least one of a binary compound containing an effective metal and an aluminum-containing metal oxide are used as a composite coating source to perform composite coating, such that the coating effect of the nickel-cobalt-aluminum ternary positive electrode material is optimized, and an ultrahigh-nickel-content nickel-cobalt-aluminum ternary positive electrode material having relatively good physical and chemical properties is prepared. Moreover, the problems of poor structural stability, a high residual alkali content, a relatively low capacity and unsatisfactory rate and cycle performance of the material are ameliorated.

The invention discloses efficient and stable CBD (cannabidiol) delivery Pickering emulsion as well as a preparation method and application thereof, and belongs to the technical field of bioactive substance delivery. Aiming at the defects that the existing CBD emulsion depends on a chemical surfactant, an extraction solvent is toxic and residual, the stability is poor and the industrialization cost is high, the soybean protein-chitosan is used as a natural binary compound stabilizer, and a deep eutectic solvent subcritical auxiliary one-step extraction-emulsification process is adopted; the emulsion is prepared by combining an ultrahigh-pressure homogenization technology and a freeze-drying solidification technology. The particle size of the obtained nano-emulsion is smaller than or equal to 180 nm, the encapsulation efficiency is larger than or equal to 88%, and no chemical surfactant is left; the stability is excellent under extreme temperature and centrifugal conditions, and the CBD retention rate is greater than or equal to 92% after storage at 45 DEG C for 60 days; the solid microspheres have good rehydration performance, and the transportation cost is reduced by 40%. The emulsion solves the problems of stability, safety and industrialization adaptation in the CBD delivery process.