30 results about "Titanium sulfide" patented technology

A process for preparing 2-hydroxy-4-methylthiobutyric acid ammonium salt involves reacting 3-methylthiopropionaldehyde with hydrogen cyanide to form 2-hydroxy-4-methylthiobutyronitrile, and subsequently hydrolyzing the 2-hydroxy-4-methylthiobutyronitrile by catalytic hydrolysis to form the ammonium salt of the 2-hydroxy-4-methylthiobutyric acid in a single process step. One catalyst may be used in the hydrolysis for the whole reaction. The catalyst is preferably a solid containing a titanium compound such as, e.g., titanium nitride, titanium sulfide or titanium dioxide. The 2-hydroxy-4-methylthiobutyric acid ammonium salt produced by this process is nutritional and can be used as an additive in feedstuffs.

A method of synthesis of lithium titanium thiophosphate LiTi2(PS4)3 including the steps of: (a) providing a mixture of lithium sulfide Li2S, phosphorus sulfide P2S5 and titanium sulfide TiS2; (b) subjecting the mixture prepared in step (a) to a preliminary reaction step through mechanical milling or melt-quenching to produce an intermediate amorphous sulfide mixture; (c) subjecting the mixture prepared in step (b) to a heat treatment step at a maximum plateau temperature of at least 350° C. and less than 500° C.

Provided is a novel lithium titanium sulfide, lithium niobium sulfide, or lithium titanium niobium sulfide endowed with the excellent charge / discharge performance (especially the excellent charge / discharge capacity and charge / discharge potential) useful for a positive electrode active material or the like for a lithium battery such as a metal lithium secondary battery or a lithium ion secondary battery by a sulfide containing lithium, titanium and / or niobium, and sulfur as constituent elements. Particularly preferred are (1) lithium titanium sulfide containing lithium, titanium, and sulfur as constituent elements and having a cubic rock-salt crystal structure, (2) lithium niobium sulfide containing lithium, niobium, and sulfur as constituent elements and having a diffraction peak at a specific position in an x-ray diffractogram, (3) lithium titanium niobium sulfide containing lithium, titanium, niobium, and sulfur as constituent elements and having a diffraction peak at a specific position in an x-ray diffractogram, or the like.

The invention discloses a preparation method of a vanadium-doped carbon sulfide titanium battery negative electrode material. The preparation method of the vanadium-doped carbon sulfide titanium battery negative electrode material comprises the following steps: (1) weighing vanadium powder, titanium powder, sulfur powder and carbon powder, and ball-milling to obtain initial raw materials; (2) performing high-temperature self-propagating reaction on the initial raw materials to prepare a solid block-shaped sample; (3) performing ball-milling treatment on the solid block-shaped sample to obtaina powdered small-granule sample; and (4) performing ultrasonic treatment, centrifugation and drying on the powdered small-granule sample to obtain the vanadium-doped carbon sulfide titanium battery negative electrode material. The invention also discloses the vanadium-doped carbon sulfide titanium battery negative electrode material prepared by the preparation method as well as application of thevanadium-doped carbon sulfide titanium battery negative electrode material to preparation of a lithium ion battery. Compared with the prior art, the preparation process is simple, rapid and pollution-free, and the vanadium-doped carbon sulfide titanium battery negative electrode material prepared by the method has high specific capacity, has high conductivity, electrochemical activity and cyclingstability and is particularly suitable for manufacturing the lithium ion battery negative electrode.

The invention relates to preparation methods of 2D nanometer titanium disulfide and a 2D nanometer titanium disulfide film electrode, and belongs to the technical field of electrochemistry. The preparation method of 2D nanometer titanium disulfide comprises the following steps that a sulfur source, a solvent and titanium tetrachloride are added to an autoclave, and make reaction for 0.5-12 hours at the temperature of 180-300 DEG C; the sulfur source and the titanium tetrachloride is in the mol ratio of 1: (0.09-2), the amount of the solvent is 40-70% of the volume of the autoclave, the sulfursource includes thiourea or dimethylthiourea, and the solvent includes toluene or xylene. The 2D nanometer titanium disulfide film electrode and the 2D nanometer titanium disulfide flexible adhesive tape based electrode are obtained in a coating method, and the 2D nanometer titanium disulfide film electrode is also prepared in an in-situ growth method, and the electrodes are high in stability andphotoelectric performance and long in service life, and can used to replace a platinum electrode.

The invention discloses a hydrogenation catalyst modified by a solid-phase modifier and its application. The hydrogenation catalyst is a mixture of a supported palladium catalyst and a solid-phase modifier, or is supported by a solid-phase modifier. metal palladium material; when the hydrogenation catalyst is a mixture of a supported palladium catalyst and a solid phase modifier, the mass ratio of the solid phase modifier to the loaded palladium catalyst is 0.1 to 500:1; when the hydrogenation catalyst is a mixture of When the solid-phase modifier is a metal palladium material loaded on a carrier, the loading amount of metal palladium is 0.1-20wt%; the solid-phase modifier is polyphenylene sulfide or metal sulfide, and the metal sulfide is silver sulfide, barium sulfide, At least one of cadmium sulfide, cerium sulfide, ferrous sulfide, ferrous disulfide, lithium sulfide, sodium sulfide, nickel sulfide, manganese sulfide, molybdenum sulfide, selenium sulfide, tungsten sulfide, zinc sulfide, copper sulfide, titanium sulfide. The hydrogenation catalyst of the present invention has high catalytic activity in the selective hydrogenation reaction of alkynes, and can effectively improve the catalytic selectivity of target olefin products.

The invention discloses a method for applying a molybdenum carbide-dispersed copper oxide-titanium trisulfide catalyst to tetrahydrofurfuryl alcohol for catalytic hydrogenation to produce 1,5-pentanediol. Copper oxide is used as an active component, and iron, cobalt and nickel are used , one or several modified metals in zinc, chromium and vanadium are modified, titanium trisulfide is used as a co-catalyst, the composite component is supported on a molybdenum carbide carrier, and it is applied to the catalytic conversion of tetrahydrofurfuryl alcohol to prepare 1,5-pentanediol. The method adopts non-precious metal to prepare the catalyst, and has low cost and good stability.

The invention provides a preparation method of an oxygen-deficient titanium disulfide@carbon nanodisk photocatalytic material. The organic titanium salt is added to oleylamine and stirred, an inert gas is introduced, and the solution is heated to be fully mixed; and mercaptan is injected into the above solution, Stir and heat, keep at this temperature for 20-30 min, and naturally cool to room temperature; drop the obtained solution into liquid alkane, and separate and dry the precipitate to obtain titanium disulfide@C nanodiscs; pure titanium disulfide@C nanodiscs The disks were placed in a hydrogen atmosphere and calcined to obtain oxygen-deficient titanium disulfide@C nanodisks. The invention provides a preparation method of an oxygen-deficient titanium disulfide@carbon nano-disk photocatalytic material. The titanium disulfide@carbon nano-disk photocatalytic material has a larger specific surface area, and the oxygen-deficient defect plays an important role in improving the photocatalytic performance of the material. plays a very important role. It is beneficial to improve the photocatalytic performance of the material. Under UV photocatalytic conditions, the degradation of tetracycline reached 99.8% after 60 min. The preparation process is relatively simple and easy to operate.

A method of synthesis of lithium titanium thiophosphate LiTi2(PS4)3 including the steps of: (a) providing a mixture of lithium sulfide Li2S, phosphorus sulfide P2S5 and titanium sulfide TiS2; (b) subjecting the mixture prepared in step (a) to a preliminary reaction step through mechanical milling or melt-quenching to produce an intermediate amorphous sulfide mixture; (c) subjecting the mixture prepared in step (b) to a heat treatment step at a maximum plateau temperature of at least 350° C. and less than 500° C.

The invention provides a method for preparing titanium metal by ilmenite composite ore carbon sulfide-electrolysis, which relates to the technical field of non-ferrous metal extraction. It adopts titanium sulfide anode for electrolysis, and has the advantages of high electrolysis efficiency, less intermediate products, and high-purity titanium directly. Advantages, it can also be produced continuously without producing anode slime, and realizes efficient recycling of energy minerals; the method steps include S1, mixing titanium-containing materials, carbon-containing reducing agents, and sulfur-containing reducing agents in a molar ratio of 1:2.0:2.0 ~1:2.5:3.0 ratio is uniformly mixed to make a mixture, and the mixture is completely vulcanized to prepare a titanium sulfide product; S2, prepare the titanium sulfide product into a solid solution; S3, in a molten salt electrolyte system Metal titanium is extracted by electrolysis, the anode is the solid solution during electrolysis, the anode recovers sulfur gas, and the cathode obtains metal titanium. The technical scheme provided by the invention is suitable for the processes of sulfidation of titanium-containing ores and electrochemical extraction of metallic titanium.

The invention provides a perovskite solar cell with black phosphorus as the hole transport layer. On the black phosphorus hole transport layer are a perovskite structure light-absorbing layer, an electron transport layer and a transparent conductive electrode in sequence, and the positive electrode is prepared on black phosphorus. the backside of the hole transport layer. The black phosphorus hole transport layer has more excellent chemical stability and lower cost than organic matter as the hole transport layer, and improves the output power and photoelectric conversion efficiency of the solar cell, and further doping in the black phosphorus hole transport layer Titanium disulfide, titanium disulfide molecules can be easily nested in the defect position of the black phosphorus crystal, thereby reducing the crystal defect of the black phosphorus hole transport layer and further improving the photoelectric conversion efficiency.

The invention discloses the application of a supported single-atom noble metal catalyst in the esterification reaction of unsaturated hydrocarbon carboxymethyl. The active component is any one or more of Ru, Rh, Ir, Pt, Pd, Ag, Au. The load of metal is 0.05%-1.5%, the carrier is any one of chromium sulfide, manganese sulfide, iron sulfide, cobalt sulfide, nickel sulfide, copper sulfide, zinc sulfide, molybdenum sulfide, tungsten sulfide, titanium sulfide, the catalyst Preparation: After mixing the carrier and the active metal, calcining at a certain temperature. The catalyst is used for methyl esterification of unsaturated hydrocarbon carboxymethyl to prepare methyl ester compound, and has good activity and selectivity. Compared with the system in which homogeneous nickel carbonyl or palladium-phosphine complexes are used as catalysts and highly corrosive sulfuric acid or sulfonic acid is added as auxiliary agents, the heterogeneous reaction process provided by the invention is environmentally friendly, simple to operate, and recyclable Take advantage of other advantages.

The invention discloses a method for preparing metallic titanium through titanium / carbon / sulfur soluble anode electrolysis, and relates to the technical fields of nonferrous metallurgical mineral treatment and titanium extraction metallurgy adopting molten salt electrochemistry. According to the method, a titanium-carbon-sulfur anode material with high electrical conductivity is successfully prepared by taking titanium-containing mineral raw materials, carbon (C) and sulfur (S) as raw materials, and via sintering and other technologies. The metallic titanium is successfully prepared in a molten salt electrolyte system through the titanium-carbon-sulfur anode. The titanium / carbon / sulfur soluble anode is adopted, the metallic titanium is deposited at a cathode in a molten salt electrolysis process, the anode generates CS2 gas, and the gas is effectively applied to treatment for minerals to prepare a titanium sulfide raw material; and the method is simple in process, low in energy consumption, continuous in production, and capable of realizing efficient and cyclic utilization for energy resources.

The invention provides a battery composite positive electrode and an electrochemical battery composed thereof, the composite positive electrode includes lithium iron manganese phosphate LiFe 1‑ x mn x PO 4 , titanium disulfide TiS 2 , the addition of a small amount of titanium disulfide provides the function of "discharge end indication" and solves the problem of lithium iron manganese phosphate LiFe 1‑x mn x PO 4 The voltage is flat during the discharge process, and the curve bends downward only when the end discharge voltage is approaching. There is no obvious characteristic problem when reaching the end discharge voltage, and the control of the end discharge voltage is realized.

The invention relates to a positive electrode for a zinc-bromine flow battery. The positive electrode uses a conductive current collector as a substrate, and a catalytic material is supported on the substrate. The catalytic material is carbon-coated titanium disulfide, and the conductive current collector is used. For nickel foam or carbon felt. The present invention starts from the electrode. The electrode in the flow battery provides a reaction site for the electrochemical reaction. If the generated bromine element can be completely reacted during the discharge process, the concentration of bromine in the electrolyte solution in the subsequent cycle process will be greatly reduced, reducing the Osmotic contamination of elemental bromine.

The invention provides a vanadium-titanium sulfide catalyst as well as its preparation method and application. Vanadium titanium sulfide catalyst of the present invention, the carrier of described catalyst is the TiO of sulfide 2 , the active component is V loaded on the carrier 2 o 5 , with the sulfurized TiO 2 The mass of the carrier is 100% in terms of the V 2 o 5 The mass of the active component is 1-3%. Vanadium titanium sulfide catalyst of the present invention is in 200000h ‑1 The space velocity and the temperature range of 300-450°C have a NOx purification efficiency higher than 90%, and the operating temperature window is wide. The preparation method of the vanadium-titanium sulfide catalyst of the present invention is simple, and the low-temperature activity is improved by controlling the polymerization state of vanadium on the catalyst surface, and the prepared vanadium-titanium sulfide catalyst can be used for NH 3 ‑SCR process catalytic purification of NO x .