44results about How to "Suitable for industrial scale" patented technology

The invention provides a preparation method of heteroatom doped graphene-based material supported noble metal nanoparticles. The preparation method comprises steps as follows: preparation of a heteroatom doped graphene-based material: a graphene-based material is subjected to ultrasonic treatment, a heteroatom precursor is added, heteroatom doping is performed in a hydrothermal kettle at the temperature of 150-200 DEG C, and the heteroatom doped graphene-based material is obtained; preparation of the heteroatom doped graphene-based material supported noble metal nanoparticles: the heteroatom doped graphene-based material is dissolved in deionized water and subjected to ultrasonic treatment, a stabilizer and a metal precursor are added, metal in the metal precursor is platinum, palladium, gold or silver, the mixture is continuously stirred, pH is adjusted to range from 8 to 14, a reduction agent is added, the mixture is continuously stirred, and the heteroatom doped graphene-based material supported noble metal nanoparticles are obtained after vacuum drying. The synergistic effect of the heteroatom and the carrier on noble metal is used, the activity and the stability of a catalyst are effectively improved, and a preparation process is simple and suitable for industrial production and has higher economic value.

The invention discloses a preparation method of a cathode material of a lithium-rich ternary compound lithium ion battery. The molecular formula of the cathode material is Li1.2Ni0.13Co0.13Mn0.54O2. The preparation method comprises the steps of firstly, stirring an organic precipitant in constant temperature water bath to dissolve the organic precipitant in an organic solvent to obtain a solution I; after that, ultrasonically dissolving soluble cobalt salt, nickel salt, manganese salt and lithium salt in deionized water to obtain a solution II; then, dropwise adding the solution II into the solution I at constant speed, and carrying out a reaction at the temperature of 40-80 DEG C for 2h-4h; drying at 100-120 DEG C; and heating the obtained solid powder in a high temperature tube furnace system by stages, calcining, and cooling the product to room temperature along with the furnace to obtain the lithium-rich ternary compound lithium ion battery cathode material which is good in electrochemical performance and uniform in particles, and has a spherical or ellipsoidal morphology feature. The preparation technology is simple and suitable for industrial scale production.

The present disclosure describes processes for producing cyclohexenes using Lewis acidic ionic liquids comprising the steps of providing to a reactor an α,β-unsaturated carbonyl dienophile, providing to the reactor a 1,3-diene, providing a Lewis acidic ionic liquid to the reactor; and reacting the α,β-unsaturated carbonyl dienophile with 1,3-diene to form a substituted cyclohexene product. The α,β-unsaturated carbonyl dienophile can be mesityl oxide, the 1,3-diene can be piperylene; and the Lewis acidic ionic liquid can be AlCl₃:[C₂mim]Cl; AlCl₃:[C₈mim]Cl; or mixtures thereof.

The present invention relates to processes for the preparation of intermediates of valsartan.

The invention relates to a preparation method of a trace Mo-doped lamellar lithium-enriched ternary positive electrode material. The molecular formula of the prepared ternary positive electrode material is Li1.2(Mn0.54Ni0.13Co0.13)(1-x)MoxO2 (x is more than 0 and smaller than 1). The adopted preparation method is an organic co-precipitation method and comprises the steps of stirring an organic precipitator in a water bath with constant temperature, and dissolving the organic precipitator into an organic solvent so as to obtain a solution A; then dissolving soluble cobalt salt, nickel salt, manganese salt, molybdenum salt and lithium salt into deionized water to obtain a solution B; after thorough dissolution, dropwise adding the solution B into the solution A at a constant speed, reacting and drying, increasing the temperature of the obtained solid powder in a high-temperature tube furnace system, and calcining so as to obtain the trace Mo-doped lamellar lithium-enriched ternary positive electrode material. The material has uniform particles and regular polygonal morphology feature, and has relatively good electrochemical performance, the preparation process is relatively simple, and the ternary positive electrode material is suitable for industrialized scale production.

The invention provides a preparation method of a conductive carbon material with a hierarchical porous structure. The method comprises: dissolving phenolic resin into an ethanol solution; dissolving a surface active agent F127 into an HCl-containing ethanol solution; then adding ethyl orthosilicate, silicon dioxide colloidal particles and the phenolic resin ethanol solution; transferring a mixture into a container, volatilizing ethanol, performing thermal polymerization in a reaction furnace of 100 DEG C to obtain a faint-yellow transparent thin film, and grinding the thin film into powder; putting the powder into a tubular muffle furnace, and performing carbonization under the nitrogen atmosphere protection; soaking a hierarchical porous structure carbon/silicon oxide composite material into HF of which the content is 5wt%, removing silicon oxide, only retaining carbon components of the hierarchical porous structure, washing a sample by using deionized water, and then performing drying to obtain the conductive carbon material with the hierarchical porous structure. According to the preparation method of the conductive carbon material with the hierarchical porous structure, the internal resistance of a lead acid battery electrode can be effectively reduced, and the utilization rate of active substances and the charge-discharge rate are improved; meanwhile, the electrode structure can be stabilized, and the recycling life is prolonged.

The invention discloses an in-situ SiC particle reinforced Ti6Al4V preparation method. The method comprises the following steps: (1) putting Si powder and C powder into high-energy grinding equipment for mechanical alloying, grinding for 8-48 hours, wherein the mass ratio of the Si powder to the C powder is (2-3):1, then adding SiO2 powder which accounts for 5-20% of the total mass of the Si powder and the C powder, and further grinding for 4-10 hours to obtain a mixed material; (2) uniformly mixing titanium powder, master alloy powder and the mixed material, wherein the addition amount of the titanium powder accounts for 80-95% of the total mass of the titanium powder and the master alloy powder, the addition amount of the master alloy powder accounts for 5-20% of the total mass of the titanium powder and the master alloy powder, the addition amount of the mixed material accounts for 5-40% of the titanium powder and the master alloy powder, and compression molding to produce blanks; and (3) sintering the blanks in a vacuum sintering furnace for two stages at 700-900 DEG C for 0.5-3 hours, then heating to be 1300-1500 DEG C and sintering in an argon atmosphere for 0.5-3 hours. The reinforcement phase of a composite material obtained by the method is produced in situ, interfaces are densely connected together, and the composite material has high strength and is suitable for industrial scale.

A method for preparing an aqueous suspension of nanocapsules comprising an oily core surrounded by a polymeric shell, comprises mixing first and second phases, wherein the first oily phase comprises a hydrophobic polymer, an oil or a mixture of oils, at least one active ingredient, and a surfactant TA₁. The oily phase is brought to a temperature T₁ higher than the melting point of the hydrophobic polymer, the hydrophobic polymer being miscible, at this temperature T₁, with the mixture of the surfactant TA₁ and the oil or mixture of oils, and the active ingredient being miscible, soluble or solubilized in the mixture of the surfactant TA₁ and the oil or mixture of oils. The second polar phase comprises a hydrophilic polymer in the form of a hydrogel in an aqueous solution containing a surfactant TA₂, to form the nanocapsules in an aqueous suspension.

The invention relates to a boron-doped graphene nanobelt loaded nickel monoatomic catalyst and a preparation method thereof. The boron-doped graphene nanobelt loaded nickel monoatomic catalyst is prepared by comprising the following steps: preparation of a graphene nanobelt, preparation of a boron-doped graphene nanobelt and preparation of the boron-doped graphene nanobelt loaded nickel monoatomiccatalyst. Compared with the prior art, the boron-doped graphene nanobelt loaded nickel monoatomic catalyst provided by the invention uses the boron-doped graphene nanobelt as a belt-shaped carrier, has uniform and regular nickel monatomic morphology characteristics, has good catalytic performance and stability in the field of hydrogen production, is simple in preparation process, is applicable toindustrial production and has high economic value.

The invention relates to a graphene nanobelt supported palladium monatomic catalyst and a preparation method thereof. The preparation method comprises steps of preparation of graphene nanobelts and preparation of palladium monatomic, and preparation of the graphene nanobelt supported palladium monatomic catalyst. Compared with the prior art, the preparation method has the advantages that the graphene nanoribbons are used as the ribbon-shaped carriers, the palladium monatomic morphology characteristics are uniform and regular, the catalyst has good catalytic performance and stability in the field of hydrogen production, the preparation process is simple, and the catalyst is suitable for industrial production and has high economic value.

The invention provides a light emitting diode (LED) chip and a preparation method of the same, for solving the problems that because of crystal defect, static puncture or other situations, electric leakage may occur in a current light emitting diode chip, so that the LED chip is disabled. The light emitting diode chip includes a substrate, an epitaxial lamination layer, a transparent conducting layer, an N electrode and a P electrode, wherein a center groove is etched in the horizontal center line of the epitaxial lamination layer and the center groove divides the epitaxial lamination layer into two pieces; the center groove is filled with insulating filling materials; and the transparent conducting layer does not cover the center groove and an electrode groove. The light emitting diode chip has the advantages of improving the service life, improving the reliability of an LED device using the light emitting diode chip, being very simple in structure, and being suitable for industrial scale development.

The present invention relates to process and intermediates for the preparation of substituted 1,3-oxathiolanes. The present invention specifically relates to a process for the preparation of lamivudine.

The invention relates to solvent type metal ink for BOPP thin film printing and a preparation method of the solvent type metal ink. The solvent type metal ink is prepared from, by weight, 10-30 parts of metallic pigment, 25-50 parts of solvent and 30-60 parts of film-forming resin. The metallic pigment is one of bronze powder and aluminum silver powder, the solvent is an esterified organic solvent, and the film-forming resin is nitrocotton resin. In the preparation process, the metallic pigment and the solvent are fully and evenly mixed, then the film-forming resin is added, full stirring is carried out till even dispersion is achieved, then pouring and packaging are carried out, and after aluminum foil sealing is carried out, the finished metal ink is prepared. Compared with the prior art, the prepared metal ink has good printing adaptability on BOPP, hole shrinkage or other phenomena are not likely to happen, the completeness and attractiveness of printed matter are protected, the preparation process is simple, the prepared finished product is good in stability, multiple additives do not need to be additionally added, production cost is reduced, and the method is suitable for industrial and efficient mass production.