814 results about "Metallic catalyst" patented technology

The invention discloses an application of a single-metal Co (at) N-C nanotube with high C and N contents. The Co (at) N-C nanotube is used for a zinc or magnesium metal air battery positive electrode material catalyst. The application of the oxygen reduction catalyst in a primary zinc-air battery, a primary magnesium-air battery and a secondary zinc-air battery is realized. The oxygen reduction catalytic material is characterized by being a monometallic catalyst, and shows relatively high energy density and power density in a metal battery. The half-wave potential of the prepared single-metal catalyst Co (at) NC-1Co (at) NC-1 is 0.85 V, and the half-wave potential exceeds the half-wave potential of commercialized 20% Pt / C; the limit diffusion current density Jd is 5.44 mA cm <-2 >, which is equivalent to that of commercial 20% Pt / C. The power density of a primary zinc air battery taking Co-coated NC-1 as the oxygen reduction catalyst is 202 mW cm <-2 >, and the maximum energy density is 928 Wh kg <-1 > Zn, which is higher than that of a Pt / C-based zinc metal air battery. The catalyst has the advantages of easily available raw materials, simple preparation and low cost, and has potential commercial application value.

The application belongs to the technical field of batteries, and particularly relates to a silicon-carbon negative electrode material and a preparation method and application thereof. The method comprises the following steps: preparing a porous carbon fiber membrane loaded with a metal catalyst; preparing a dispersion solution of a nano-silicon-based material, and distributing the nano-silicon-based material into the porous carbon fiber membrane to obtain a composite porous carbon fiber membrane; and performing thermal chemical vapor deposition on the composite porous carbon fiber membrane in an inert atmosphere containing a carbon source, growing carbon nanofibers and vertical graphene on the surface of the composite porous carbon fiber membrane, and obtaining a silicon-carbon negative electrode material. Through a synthesis route of thermal chemical vapor deposition (T-CVD), the synthesis process is optimized, and a multi-level three-dimensional network structure of carbon nanofibers and vertical graphene is constructed to enhance the electrical conductivity of the silicon-carbon negative electrode material, accelerate carrier transmission, improve the interface contact performance between the silicon-based material and the carbon material, improve the loading capacity of the nano-silicon-based material, inhibit the volume expansion of the nano-silicon-based material, and improve the structure and cycle stability of the nano-silicon-based material.

The invention discloses a carbon nanotube quasi-catalyst as well as preparation and application thereof, and relates to the technical field of synthesis of carbon nanotube catalysts. A metal catalyst precursor salt, an oxide carrier precursor salt and a complexing agent are mixed to prepare a precursor solution, the colloidal crystal microsphere template is soaked in the precursor solution, and the quasi-catalyst can be obtained after suction filtration, drying and low-temperature heat treatment. When the quasi-catalyst is used for preparing the carbon nano tube, dangerous reducing gas such as hydrogen is not needed, and the carbon nano tube powder which is small and uniform in diameter, excellent in conductivity and easy to disperse can be efficiently prepared on a large scale under the conditions of low carrier gas flow rate and low reaction temperature. The quasi-catalyst and the preparation technology thereof have remarkable technical advantages and cost benefits, and have wide application prospects.

The invention provides a metal Ru catalyst as well as a preparation method and application thereof, and particularly, the metal Ru catalyst is prepared by using a specific carbon source and a ruthenium source as precursors through a simple one-step method. The method is simple in process, low in cost and high in controllability, the obtained metal Ru catalyst has excellent seawater electrolysis activity and stability, the overpotential (mV) shown under 10 mA cm <-2 > under the real seawater condition is 39 mV which is far lower than the overpotential (53 mV) shown under 10 mA cm <-2 > of commercial Pt / C, and the metal Ru catalyst can be applied to the cathodic hydrogen evolution reaction of seawater electrolysis.

The invention provides a negative-electrode-free sodium ion battery current collector, application thereof and a negative-electrode-free sodium ion battery, and relates to the technical field of batteries. The negative-electrode-free sodium ion battery current collector provided by the invention comprises a base material and a coating coated on the surface of the base material, the coating comprises porous nitrogen-doped carbon particles and a binder; the porous nitrogen-doped carbon particles are loaded with fluorine-containing sodium salt and a metal catalyst, and the surfaces of the porous nitrogen-doped carbon particles are coated with polymers. According to the current collector, in-situ construction and dynamic repair of NaF-rich SEI are promoted through the core-shell structure design, long-term, uniform and stable deposition of sodium ions on the current collector can be achieved, the coulombic efficiency of a negative-electrode-free sodium battery is improved, and the cycle life of the negative-electrode-free sodium battery is prolonged.

The invention relates to the technical field of carbon nanotubes, and particularly discloses a purification method of a carbon nanotube. The purification method of the carbon nano tube comprises the following steps: (1) weighing a carbon nano tube crude product and various raw materials, (2) adding the carbon nano tube crude product and a surfactant into deionized water, and carrying out ultrasonic dispersion to obtain a dispersion liquid, (3) carrying out gradient centrifugation on the dispersion liquid, and taking an upper-layer suspension liquid, and (4) mixing hydrochloric acid, nitric acid and the suspension liquid, and treating the carbon nano tube to obtain the carbon nano tube. (5) treating the carbon nano tube by dilute acid, mildly oxidizing the carbon nano tube by using a low-concentration hydrogen peroxide solution, and then placing the carbon nano tube in a magnetic field to adsorb magnetic impurities, (6) carrying out cross-flow filtration by using a polycarbonate microfiltration membrane and collecting the treated carbon nano tube, and (7) annealing the treated carbon nano tube by using inert gas and freeze-drying to obtain the purified carbon nano tube. According to the purification method, the metal catalyst, amorphous carbon and graphite impurities can be efficiently removed, and meanwhile, the integrity of the tube wall of the carbon nano tube is kept.

The invention discloses a method for preparing 1, 3-propylene glycol by hydrating and hydrogenating acrolein, which comprises the following steps: carrying out hydration reaction by taking an acrolein aqueous solution as a raw material and taking acylated and aminated modified polystyrene resin as a catalyst; carrying out flash evaporation or gas stripping on the product after the reaction to remove acrolein, condensing and recovering the removed acrolein, and carrying out hydrogenation reaction on the acrolein-removed mixed solution serving as a hydrogenation raw material on a metal catalyst; and after the reaction is finished, performing flash evaporation on the product to remove water and light components, and performing vacuum rectification to obtain a high-purity 1, 3-propylene glycol product. According to the method, the modified resin is used for catalyzing the acrolein hydration reaction, the overall yield of the 1, 3-propylene glycol can be increased, the catalyst modification process is simple, the cost is low, the additional value of the final product is high, and the method is suitable for industrial production.

The invention relates to the technical field of preparation of a lithium ion battery positive electrode lithium supplement agent, in particular to preparation of a composite lithium supplement agent, which comprises the following steps: dissolving lithium hydroxide and oxalic acid in pure water to prepare a lithium oxalate saturated solution, and adding a metal catalyst; preparing lithium oxalate particles from the lithium oxalate saturated solution containing the metal catalyst through a spray dryer in an inert atmosphere; the lithium oxalate particles are put into a CVD rotary furnace, organic steam is introduced, the organic steam is decomposed through a metal catalyst to generate carbon, and the carbon is deposited on the surface of lithium oxalate; reducing the temperature of the CVD rotary furnace, introducing a silicon source, introducing water vapor, and coating the surface of the material with a SiO2 film; and reducing the temperature of the CVD rotary furnace, introducing a modifier, and carrying out a cross-linking reaction on the modifier and the surface of the material to obtain the final product Li2C2O4 (at) C (at) SiO2 (at) CF3. According to the invention, the defects of lithium oxalate insulation, high decomposition voltage and poor air stability are overcome.

A lithium replenishment composite material and its preparation method, as well as a positive electrode plate, a separator, a secondary battery, and an electrical device. The composite material includes a core and a coating layer containing a conductive material, which at least partially covers the core. The core comprises a lithium replenishment agent and a metal catalyst, wherein the lithium replenishment agent includes an organic lithium compound. During an initial charging cycle, the organic lithium compound releases lithium ions to replenish lithium in the negative electrode, while its byproducts decompose into gases that are expelled from the battery, thereby minimizing impact on mass energy density and long-term performance. The metal catalyst lowers the decomposition potential of the lithium agent, allowing lithium replenishment at lower voltage while protecting the positive electrode and electrolyte. The conductive coating suppresses metal dissolution, enhances conductivity, and improves the cycling performance of the battery.

The invention belongs to the technical field of metal organic framework materials and catalytic oxidation, and particularly relates to a bimetallic MOF catalyst based on waste plastics and a preparation method and application thereof. Adding the PET plastic bottle fragments and metal salt into a solvent, heating to a specified temperature, reacting for a preset time, then cooling to room temperature, centrifugally separating, cleaning and drying to obtain the bimetallic MOF catalyst. The preparation method is simple in step, and a large amount of time can be saved. The bimetallic MOF catalyst can effectively catalyze and degrade various dyes, antibiotics and phenol pollutants, and has a good cyclic catalysis effect, a good cyclic catalysis effect and excellent stability. The bimetallic MOF catalyst is prepared from the waste plastics, so that the raw material cost in the MOF synthesis process can be reduced, and the environmental problem of the waste plastics is effectively solved.

The invention relates to a carbon nano reinforced thermoplastic polyurethane composite material as well as a preparation method and application thereof. The composite material is prepared from the following components in parts by mass: 5 to 20 parts of diisocyanate, 10 to 30 parts of oligomer dihydric alcohol, 1 to 10 parts of bifunctional chain extender and 1 to 20 parts of filler, the filler is prepared from the following components in parts by mass: 0.95 to 18 parts of inorganic filler and 0.05 to 2 parts of carbon-based nano filler; preparing a carbon-based nanofiller of flaky carbon nanofibers, tubular carbon nanofibers or fishbone-shaped carbon nanofibers from reaction gas by using a metal catalyst through a chemical vapor deposition method; the metal catalyst is selected from an iron-nickel catalyst or a nickel-copper catalyst, the reaction gas comprises a carbon source gas and a reducing gas, the carbon source gas is selected from carbon monoxide or ethylene, and the reducing gas adopts hydrogen. Compared with the prior art, the material has good mechanical properties and damping performance, especially has excellent normal-temperature damping performance and damping temperature range, and is suitable for 3D printing.

The invention discloses 1K varnish as well as a preparation method and a spraying method thereof, relates to the technical field of automobile coating varnish, and solves the problems that the existing 1K varnish is difficult to be matched with a water-based colored paint system and is poor in performance. Comprising acrylic polyol, a thermosetting hydroxylated acrylic copolymer solution, thermosetting hydroxylated acrylic resin, polycarbonate diol, amino resin, blocked isocyanate resin, a leveling agent, a catalyst, an aging aid, a wetting dispersant and a solvent. The amino resin comprises butylated amino resin and a trifunctional melamine cross-linking agent; bYK306 and BYK358N are used as the flatting agents; the catalyst comprises an acid catalyst and a metal catalyst; the aging auxiliary agent comprises an ultraviolet light absorber 80 and a light stabilizer uv-93; the wetting dispersant is BYK-161; the solvent is prepared from butyl acetate, DBE, ethyl ethoxypropionate, ethylene glycol butyl ether acetate and n-butyl alcohol. The method is suitable for being matched with a water-based production line and is wide in applicability.

The invention provides a hydrodesulfurization and demetalization catalyst with defects on the surface and a preparation method of the hydrodesulfurization and demetalization catalyst, and is suitable for the field of catalyst preparation. The preparation method comprises the following steps: preparing a phosphorus-modified aluminum oxide compound; preparing the phosphorus-modified aluminum oxide compound into phosphorus-modified unit cell distortion pseudo-boehmite; the preparation method comprises the following steps: dipping phosphorus-modified cell-distorted pseudo-boehmite in a solution A containing an active metal component, carrying out second drying on the material, uniformly mixing the material obtained after second drying, pseudo-boehmite C and sesbania powder, adding a peptizing agent, carrying out kneading molding, and carrying out third drying and second roasting to obtain an alumina carrier; impregnating the alumina carrier with a solution B containing an active metal component, and carrying out fourth drying and third roasting to obtain a catalyst precursor; adding a second urea solution, carrying out third hydrothermal treatment, filtering, washing, fifth drying and fourth roasting to obtain the hydrodesulfurization and demetalization catalyst, the catalyst has the beneficial effects of high surface defect content and high activity.

The invention provides a method for recovering platinum group metal from a catalyst containing platinum group metal, which comprises the following steps: mixing the catalyst containing platinum group metal with active metal, and heating to obtain an R-M intermetallic compound, where R is at least one of Li, Na, Ca and Mg, and M is at least one of Ir, Pt, Pd and Rh; oxidizing the R-M intermetallic compound to obtain an oxidized intermetallic compound; and the oxidized intermetallic compound is placed in an electrolyte solution, voltage is applied for electrolysis, and the platinum group metal is obtained at a cathode. The platinum group metal can be recycled from the catalyst through alloying, oxidation and one-step electrolysis, the process is short, operation is easy and convenient, and efficiency is high.

The invention discloses a closed all-solid-state lithium-oxygen battery, an oxidation composite positive electrode and a preparation method, the closed all-solid-state lithium-oxygen battery comprises an oxygen-containing compound and a catalyst, the oxygen-containing compound comprises one or more of Li2O, Li2O2, KO2, Li2CO3, Li3PO4 and LiNO3, and the catalyst comprises a transition metal oxide, a noble metal and an alloy thereof, a carbon-based material, a metal organic framework and a derivative thereof, a monatomic catalyst and a composite material. The catalyst comprises one or more of oxygen-containing compounds and one or more of non-metal catalysts, the mass ratio of the oxygen-containing compounds is 50%-80%, and the mass ratio of the catalyst is 20%-50%. According to the invention, the oxidation-reduction reaction of oxygen is immobilized, oxygen is not generated, and the problems of complex structure and low actual energy density of an open type lithium air battery are solved; the solid electrolyte is used for replacing electrolyte, so that the potential safety hazard of electrolyte permeation is solved, the electrochemical performance is improved, and a new path is provided for the ultrahigh-specific-energy all-solid-state battery.

The invention provides a purple sand sintered body for wine aroma enhancement and a preparation method and application thereof, and belongs to the technical field of purple sand materials.The purple sand sintered body for wine aroma enhancement is prepared by mixing Benshan purple clay purple sand pug and Benshan cinnabar clay purple sand pug according to the mass ratio of (95-60): (5-40) and firing, the content of TiO2 in the mountain purple clay purple sand pug is not less than 0.9 wt.%; the K2O content in the mountain cinnabar clay purple sand pug is not less than 2.0 wt.%, and the MgO content is not less than 0.6 wt.%. According to the purple sand sintered body for wine aroma enhancement, other preparations do not need to be additionally added, only the natural Benshan purple clay purple sand mud rich in titanium and the Benshan cinnabar clay purple sand mud rich in potassium and magnesium are mixed, and an iron-based multi-element catalytic system is constructed by adjusting the mass ratio of the two materials. Furthermore, a sintering process is optimized, a confinement space is created, and the synergistic effect of the multi-element metal catalyst is enhanced, so that the generation efficiency of the wine flavor substance is remarkably improved.

The present invention provides a two-component composition that suppresses dripping during spray application, has high thermal insulation properties, excellent smoothness, and high interlayer adhesion strength for spray-applied polyurethane foam roofing. [Solution] A two-component composition for spray-applied polyurethane foam for roofs, comprising: liquid A containing a polyol, a catalyst, and a blowing agent; and liquid B containing an isocyanate compound, wherein the catalyst includes a foaming catalyst and a resinification catalyst (excluding a metal catalyst), and the blowing agent includes a hydrochlorofluoroolefin and does not include the metal catalyst which is the resinification catalyst, or a trimerizing catalyst.

The present invention provides a membrane electrode assembly for preventing reverse voltage of a fuel cell, comprising an electrolyte membrane between a positive electrode and a negative electrode, in which the positive electrode and the negative electrode each comprise a supported catalyst in which a metal catalyst is supported on a support, wherein the ratio MCL / R between the metal catalyst loading amount MCL in the negative electrode and the loaded metal catalyst ratio R is 0.125 to 0.3. This membrane electrode assembly can prevent an overflow phenomenon that may occur in cold start driving or fast acceleration driving by appropriately controlling physical property factors associated with a fuel cell negative electrode. Thus, this membrane electrode assembly can suppress carbon corrosion at the negative electrode and improve durability.

The invention discloses a synthesis method of an oxazole derivative, and belongs to the technical field of chemical synthesis. The oxazole derivative is synthesized from a ketone ester compound and thiourea through a one-pot method, the required raw materials are cheap and easy to obtain, the experimental operation is simple, the reaction condition is mild, a metal catalyst and other reagents are not needed, and the defects that a metal catalysis synthesis method is used, for example, the catalyst is high in price, the reaction synthesis route steps are many, and the synthesis cost is low are overcome. The method has the advantages of mild reaction conditions, low reaction rate, unstable intermediate, low yield and the like, bypasses most complex synthesis steps of a metal-free catalytic synthesis method, and develops a simple, efficient, green and environment-friendly way for synthesizing the oxazole derivative. Under mild conditions, ketone ester substrates with different substituent groups have very strong compatibility, and a new green synthesis way is provided for synthesis of substituted oxazole.

The application provides a carbon-based non-metallic catalyst and a preparation method and application in a fuel cell cathode thereof, and relates to the technical field of fuel cell catalysts.The preparation method comprises the following steps: mixing a molecular sieve, a carbon source, a nitrogen source and concentrated sulfuric acid in a liquid environment, and then evaporating dry to obtain a composite precursor; calcining the composite precursor at 600 DEG C-900 DEG C under nitrogen, and then etching in a sodium hydroxide solution at 70 DEG C-90 DEG C to obtain a composite intermediate; and calcining the composite intermediate at 600 DEG C-900 DEG C under ammonia, and then cooling to obtain the carbon-based non-metallic catalyst.The application co-dopes nitrogen and sulfur elements on the carbon material with a molecular sieve skeleton by using the molecular sieve as a template agent, so that the carbon-based non-metallic catalyst not only has the high specific surface area and unique pore structure of the molecular sieve, but also can improve the catalytic activity, does not need to use a noble metal material, reduces the manufacturing cost, and can avoid the risk of poisoning of the metal active sites.

A process for dimerizing and oligomerizing olefins to distillate fuels which utilizes a solid acid catalyst for ethylene oligomerization in a first stage and a metal catalyst for further oligomerization in a second stage. Distillate fuels can be produced from the process. Oligomerized olefins may be recycled to the first stage oligomerization reaction to ensure sufficient oligomerization of smaller olefins.

The application discloses a preparation method of a bimetallic catalyst. A polymer containing a large amount of carboxyl groups is used as a ligand polymer to perform a coordination reaction with a zinc salt and a cobalt salt, so as to prepare a high-efficiency bimetallic catalyst. When the bimetallic catalyst synthesized by the application is used to prepare polyether polyols, the catalyst can be used in an alkaline environment and an environment with metal ions within 20 ppm. The catalyst provides convenience for switching from an alkali catalytic system to a bimetallic catalytic system, greatly simplifies the washing tank condition, and greatly reduces the switching cost of a polyether production system. The application has simple process, easily-obtained raw materials and easy industrial production.

The application discloses a residual oil hydrodemetallization catalyst and a preparation method thereof. The method comprises the following steps: (1) an acid aluminum salt aqueous solution, an alkaline aluminum salt aqueous solution and a kaolin suspension liquid containing a surfactant are subjected to a first reaction to obtain slurry I; (2) an alkaline solution is introduced into the slurry I of step (1) to perform a second reaction to obtain slurry II; (3) the slurry II obtained in step (2) is subjected to hydrothermal treatment with a gallium nitrate solution, and then washed and dried to obtain a gallium-containing macroporous silica-aluminum material; (4) the gallium-containing macroporous silica-aluminum material is mixed with a plasticizing agent and a cementing agent, and then kneaded into a shape, and then dried and calcined to obtain a catalyst carrier; and (5) the catalyst carrier of step (4) is impregnated with an active metal impregnation liquid containing an organic acid and an alcohol compound, and then dried and calcined to obtain the residual oil hydrodemetallization catalyst. The catalyst can improve the demetallization activity and use stability of the catalyst in a residual oil hydroprocessing process.

The invention relates to a cold start method suitable for a liquid fuel reforming hydrogen production gasification reactor, which comprises the following steps: reacting a reduced metal catalyst in the gasification reactor with air entering the gasification reactor to release heat at ambient temperature; when the temperature in the gasification reactor is raised to the gasification temperature of the low-boiling-point liquid due to heat release, the low-boiling-point liquid enters the gasification reactor and is gasified; the gasified low-boiling-point liquid and air entering the gasification reactor are subjected to catalytic combustion reaction and heat release; when the temperature of the gasification reactor rises to the gasification temperature of the reforming hydrogen production liquid fuel due to heat release, the reforming hydrogen production liquid fuel enters the gasification reactor for liquid gasification, and the gasified liquid fuel is used for reforming hydrogen production reaction. The method basically consumes no electric energy and is low in energy consumption; liquid fuel gasification is carried out through chemical reaction heat release, and the advantages of large heat release amount, short gasification time and the like are achieved; air and methanol are used in the gasification process, and cost is low.

The invention belongs to the technical field of catalysis, and particularly relates to a nitrogen-doped carbon-loaded PdBi bimetallic catalyst as well as a preparation method and application thereof. After the carbon black is acidified, oxygen-containing functional groups on the surface are increased, so that adsorption and anchoring of metal components are facilitated; acidified carbon black and melamine are subjected to co-pyrolysis to prepare nitrogen-doped carbon, and the doping of N further strengthens the interaction between the carrier and the active component, improves the stability of the catalyst and prevents the active component from agglomerating; in the pyrolysis process, an additional reducing atmosphere is not needed, ammonia gas generated through melamine decomposition is only needed to be used for reduction of a Pd source and a Bi source, Pd and Bi in the active nanoparticles exist in an alloy form, and the synergistic effect between metal Pd and Bi can regulate and control surface charges of Pd and enhance the catalytic activity of the Pd center, so that the catalyst can keep high activity under the condition of low Pd loading capacity, and the catalytic activity of the catalyst is improved. The catalysis cost is reduced.

The invention discloses a preparation method of an easy-to-disperse high-conductivity carbon nanotube, and relates to the technical field of preparation of carbon nanotubes. The carbon nanotube is prepared by adopting a chemical vapor deposition method, and the main generation mechanism is as follows: carbon source gas is adsorbed to a metal catalyst at a high temperature of 670-750 DEG C, the carbon source is cracked to generate carbon atoms, and when the concentration of carbon reaches a certain degree, the carbon is subjected to supersaturation precipitation, and the carbon nanotube is obtained. And regularly arranged carbon nanotubes with tubular graphite layer structures grow on the periphery of the catalyst particles. The carbon nano tube prepared by the method has excellent mechanical property and conductivity.

The application provides a preparation method of conductive paste for improving the conductivity of carbon nanotubes and application thereof. The method comprises the following steps: (1) preparing a catalyst by a sol-gel method, and placing the catalyst into a tube furnace and heating to 800 DEG C to nanometerize the catalyst particles; (2) placing a catalyst precursor into the tube furnace, heating to 680 DEG C under the protection of argon, and introducing a carbon source to grow carbon nanotubes by chemical vapor deposition; (3) placing the prepared carbon nanotubes into a graphitization furnace under the protection of argon, heating to a temperature range of 2000-2800 DEG C, keeping for 3 hours, cooling to room temperature, and taking out; and (4) taking out the carbon nanotubes, and preparing stable carbon nanotube conductive paste in a solution by ultrasonic oscillation and magnetic stirring. The application can effectively remove the metal catalyst and metal oxide carrier in the carbon nanotubes, and effectively improve the conductivity of the carbon nanotubes, and the application in lithium ion batteries is embodied by the first charge-discharge efficiency, cycle performance, rate performance and impedance performance.

The invention provides an olefin hydrocarbonylation method which comprises the following step: olefin as shown in a formula (1), a nucleophilic reagent as shown in a formula (2) and carbon monoxide are subjected to a hydrocarbonylation reaction under the action of a metal catalyst, a ligand, protonic acid and optional iodide under the condition of illumination. According to the present invention, olefin represented by a formula (1), a nucleophilic reagent represented by a formula (2) and carbon monoxide are adopted as raw materials, and under the action of a metal catalyst, a ligand, a protonic acid and an optional iodide, a hydrocarbonylation reaction is performed under the illumination condition so as to obtain carboxylic acid / ester / amide / thioester and other products; the method provided by the invention can be realized at normal temperature and normal pressure, does not need special equipment, has low potential safety hazard and low energy consumption, greatly reduces the cost of large-scale production of carboxylic acid / ester / amide / thioester, and provides a novel green and efficient synthesis process for industrial production of carboxylic acid / ester / amide / thioester.

The invention relates to the field of organic synthesis, in particular to a synthesis method of gamma-aminophosphine oxide compounds and derivatives thereof. According to the synthesis method disclosed by the invention, alpha, beta-unsaturated amide, diaryl phosphine oxide or phosphite ester is taken as raw materials, and under the action of acid, the gamma-aminophosphine oxide compound can be rapidly and efficiently synthesized by a one-pot method. The preparation method comprises the following steps of: generating conjugated nitrile positive ions or imine salt intermediates with strong electrophilicity from alpha, beta-unsaturated amide under the activation of acid, converting diaryl phosphine oxide or phosphite ester into strong nucleophilic three-coordination phosphorus species under the action of alkali, and further performing phosphorus-doped Michael addition reaction on the conjugated intermediates to finally generate the gamma-aminophosphine oxide compounds. According to the method disclosed by the invention, diaryl phosphine oxide or phosphite which is cheap, easy to obtain and stable in structural property is used as a phosphorus source, the substrate applicability is wide, and the economic cost is relatively low; in addition, the method realizes synthesis of a target product without participation of a metal catalyst, and is rapid and efficient.

To provide an addition-curable silicone composition having good flowability even when a polyorganosiloxane containing a fluoroalkyl group is highly filled with a filler.SOLUTION: The addition-curable silicone composition contains (A) a specific linear organopolysiloxane, (B) an organosilicon compound having two or more hydrogen atoms bonded to silicon atoms in one molecule and having no alkenyl group, (C) 10 to 1,000 parts by mass of one or more fillers selected from titanium oxide, silica, and alumina based on 100 parts by mass of the component (A), (D) an organopolysiloxane represented by the following formula (1), and (E) a platinum group metal-based catalyst. The total number of hydrogen atoms bonded to silicon atoms in component (B) is 0.5 to 3.0 times.SELECTED DRAWING: None