257 results about "Platinum group" patented technology

A high thermal conductive silicone composition including: (A) an organopolysiloxane having at least two aliphatic unsaturated hydrocarbon groups in one molecule and a kinematic viscosity at 25 C of 100 to 100,000 mm2 / s; (B) an aluminum powder having an average particle size of 50 μm or more; (C) a thermal conductive filler having an average particle size of 0.1 to less than 50 μm; (D) an organohydrogenpolysiloxane having two or more hydrogen atoms bonded to a silicon atom (Si—H groups) in one molecule; (E) a hydrolyzable organopolysiloxane represented by the following general formula (1); and (F) a platinum group metal catalyst having an effective amount. The high thermal conductive silicone composition can conform to the warpage of a substrate due to an increased material thickness and can maintain heat dissipation performance due to a high thermal conductivity.

The present invention provides an exhaust gas purification catalyst in which platinum group metal migration from a catalyst layer to a base material during high temperature duration is suppressed. The exhaust gas purification catalyst disclosed herein includes a base material, a catalyst layer, and an intermediate layer arranged between the base material and the catalyst layer. The base material contains SiC. The catalyst layer contains a platinum group metal as a catalyst component. The intermediate layer contains substantially no platinum group metal. A product of a thickness of the intermediate layer (μm) and a specific surface area (m2 / g) of the intermediate layer is 1100 or more.

The invention provides a method for recovering platinum group metal from a waste automobile exhaust purification catalyst, and belongs to the field of precious metal recovery. The method comprises the following steps: carrying out crushing and impurity removal pretreatment on the waste catalyst to obtain solid residues; mixing the obtained solid slag with alkali liquor, and performing hot-pressing activation to obtain active slag; leaching the active slag by using an acid leaching system of hydrochloric acid-hydrogen peroxide-sodium chloride to obtain a leaching solution enriched with platinum group metals; adjusting the acidity of the leachate, adding a first adsorption material, selectively adsorbing platinum and palladium, and separating supernate and a platinum / palladium enrichment material; adjusting the acidity of the supernate, adding a second adsorption material, selectively adsorbing rhodium, carrying out solid-liquid separation, and collecting a rhodium enrichment material; respectively eluting and refining the platinum / palladium enrichment material and the rhodium enrichment material, and recovering platinum, palladium and rhodium; through the optimally designed recovery method of alkaline hot-pressing activation-mild acidic directional leaching-two-stage magnetic adsorption separation, efficient recovery of platinum, palladium and rhodium in the waste automobile exhaust catalyst is realized.

A method for recovering platinum group precious metal in a silicon carbide DPF catalyst comprises the steps that S1, smelting treatment is conducted, specifically, the silicon carbide DPF catalyst is crushed and then mixed with a smelting agent in a layered mode, a smelting reaction is conducted at the high temperature, and the smelting agent is composed of sodium carbonate and sodium peroxide; s2, leaching and separation are conducted, specifically, after the smelting product obtained in the step S1 is cooled, acid leaching treatment is conducted through hydrochloric acid, leaching liquid containing platinum group precious metal and residues are obtained through filtering separation, the residues are washed, and washing liquid is added into main leaching liquid; and S3, precious metal enrichment is conducted, specifically, the leachate obtained in the step S2 is enriched through a chemical precipitation method, the obtained precipitate is dissolved with aqua regia, and a platinum-palladium chloride mixed solution is obtained. The method is high in recovery rate, and under the optimal condition, the recovery rate of platinum can reach 91% or above, and the recovery rate of palladium can reach 96% or above; the process is simple, the cost is controllable, the used smelting agent is a common chemical raw material, and the cost is low.

The invention provides a catalyst composition, including a mixture of catalytically active particles and a magnetic material, such as superparamagnetic iron oxide nanoparticles, capable of inductive heating in response to an applied alternating electromagnetic field. The catalytically active particles will typically include a base metal, platinum group metal, oxide of base metal or platinum group metal, or combination thereof, and will be adapted for use in various catalytic systems, such as diesel oxidation catalysts, catalyzed soot filters, lean NOx traps, selective catalytic reduction catalysts, ammonia oxidation catalysts, or three-way catalysts. The invention also includes a system and method for heating a catalyst material, which includes a catalyst article that includes the catalyst composition and a conductor for receiving current and generating an alternating electromagnetic field in response thereto, the conductor positioned such that the generated alternating electromagnetic field is applied to at least a portion of the magnetic material.

The curable fluorosilicone composition of the present invention comprises at least: (A) an organopolysiloxane having at least two alkenyl groups and at least one fluoroalkyl group in one molecule; (B) an organopolysiloxane having at least two silicon atom-bonded hydrogen atoms and at least one fluoroalkyl group in one molecule; (C) a catalyst for platinum group metal-based hydrosilylation reaction; and (D) a hydrosilylation reaction inhibitor having an aliphatic unsaturated bond, the (C) component being a capsule-type catalyst with an acrylic resin as a wall material, the platinum group metal in the (C) component being 0.1 to 100 ppm in mass units relative to the present composition, and the molar ratio of the aliphatic unsaturated bond in the (D) component to the platinum group metal in the (C) component being 1 to 100. The present composition has good curability and a sufficient pot life at ordinary temperature.

Catalyst-coated ion-conducting membrane comprising an anode catalyst layer, a cathode catalyst layer and an ion-conducting membrane layer arranged between the anode catalyst layer and the cathode catalyst layer, wherein: the anode catalyst layer comprises an anode electrocatalyst and an ion-conducting polymer, wherein the anode electrocatalyst comprises particles of a platinum group metal or a platinum group metal alloy, and the anode electrocatalyst is present in the anode catalyst layer with a load of less than 0.20 mg of the platinum group metal per cm² of the anode catalyst layer;and the cathode catalyst layer comprises an ion-conducting polymer and a cathode electrocatalyst comprising platinum-containing particles and a carbon-based support, wherein the carbon-based support comprises individual primary particles or an aggregate of primary particles, the primary particles comprising pores, with some of the platinum-containing particles located within the pores and some of the platinum-containing particles located on an outer surface of the carbon-based support; wherein the platinum-containing particles on the outer surface of the carbon-based support have a mean average particle size of ≤3.0 nm; and wherein less than 50% of the surface area of ​​the platinum-containing particles is in contact with the ion-conducting polymer of the cathode catalyst layer.

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

A method of refining platinum group metal containing material in a platinum group metal refinery, the method comprising: placing the platinum group metal containing material in a furnace having a flue; thermally processing the platinum group metal containing material in the furnace; capturing flue dust passing through the flue of the furnace during thermal processing of the platinum group metal containing material, said flue dust comprising platinum group metal and base metal; treating the captured flue dust in sulphuric acid to leach the base metal into solution producing a sulphuric acid leach liquor comprising the base metal and a solid residue comprising the platinum group metal; separating the solid residue comprising the platinum group metal from the leach liquor comprising the base metal; and recycling the solid residue comprising the platinum group metal for further processing within the platinum group metal refinery to recover the platinum group metal.

Method for producing a thermally conductive film (10), comprising: a first step of forming a film or block by pressing and / or rolling a mixture of a binder resin (14) and a first thermally conductive filler (15) with shape anisotropy, which has a plate shape and a main surface thereof or a needle shape and a longitudinal direction thereof, such that the first thermally conductive filler (15) is oriented in a direction of the main surface of the film or block; a second step of hardening the binder resin (14) and then cutting the film or block in one direction of thickness to obtain mold filler pieces (12) such that the first thermally conductive filler (15) in each of them is oriented in the thickness direction of the corresponding mold filler pieces (12); and a third step of mixing the mold-filler pieces (12), a matrix resin (11) and a second thermally conductive filler (13), forming the mixture into a foil mold using pressure rollers, and then hardening the matrix resin (11); wherein the thermally conductive film (10) contains the first thermally conductive filler (15) with its main surface aligned in a thickness direction of the thermally conductive film (10), if the first thermally conductive filler (15) has a plate shape; or else wherein the thermally conductive film (10) contains the first thermally conductive filler (15) with its longitudinal direction aligned in the thickness direction of the thermally conductive film (10), if the first thermally conductive filler (15) has a needle shape, and wherein the matrix resin (11) and the binder resin (14) can be cured by an addition reaction using a platinum group metal catalyst, and wherein the second thermally conductive filler (13) consists of inorganic particles, and the inorganic particles are coated with an R(CH3) a Si(OR') 3-a expressed alkoxysilane compound are surface-treated, wherein R represents a substituted or unsubstituted organic group with 1 to 20 carbon atoms, R' represents an alkyl group with 1 to 4 carbon atoms, and a is 0 or 1.

To provide a silicone pressure-sensitive adhesive composition having high pressure-sensitive adhesive force, more particularly a silicone pressure-sensitive adhesive composition which gives a pressure-sensitive adhesive layer excellent in substrate adhesion without primer treatment and excellent in heat resistance free from adhesive residue even after heating at high temperature, and to provide an adhesive tape and an adhesive film each having a pressure-sensitive adhesive layer comprising a cured product of the pressure-sensitive adhesive composition.SOLUTION: A silicone PSA composition comprising the following components (A) to (D): (A) a linear or branched organopolysiloxane having at least one alkenyl group per molecule and at least one aryl-containing organic group per molecule, (B) an organopolysiloxane resin having a specific chemical structural formula, (C) an organohydrogenpolysiloxane having at least three silicon-bonded hydrogen atoms per molecule, and (D) a catalytic amount of a platinum group metal-based catalyst.SELECTED DRAWING: None

The invention discloses a method for preparing large-specific-gravity platinum powder from crude platinum, and belongs to the technical field of platinum group metal refining. According to the method, efficient purification of platinum and preparation of large-specific-gravity platinum powder are realized by adopting a combined precipitation method through the core steps of dissolving for liquid preparation, ammonium chloride precipitation, dissolving for impurity removal, acidification precipitation, reduction and the like. The method comprises the following specific steps: dissolving crude platinum with aqua regia to prepare a crude platinum solution, precipitating with ammonium chloride to generate ammonium chloroplatinate, dissolving with a special reagent to remove platinum group metal and base metal impurities, acidifying, precipitating, further purifying, and finally reducing with a liquid phase to obtain the large-specific-gravity platinum powder. The method is short in technological process, easy in process control, simple in operation equipment and suitable for large-scale production, the product purity is higher than 99.99% of sponge platinum requirements in the national standard GB / T-1419, the tap density is larger than 3.5 g / mL, and the method has wide application value in multiple fields of jewelry, chemical engineering, medicine, electronics, ceramics and the like.

The invention provides a microwave-photocatalysis synergistic sludge treatment and carbon material co-production method, a microwave-photocatalysis synergistic sludge treatment and carbon material co-production system and application, and relates to the technical field of solid waste resourceful treatment. Comprising the following steps: (a) sequentially carrying out microwave treatment, photocatalytic treatment, electrochemical reduction-adsorption coupling treatment and supercritical water oxidation treatment on sludge to obtain H2 and CO2; and (b) preparing the nano carbon material under the action of plasma by taking CO2 as a carbon source. Microplastics are crushed and pollutants are activated through microwave-photocatalysis synergistic pretreatment, the drug residue degradation efficiency is remarkably improved, heavy metal removal and platinum group metal recovery are achieved in combination with electrochemical reduction-adsorption coupling, and hydrogen and CO2 are co-produced by oxidizing and mineralizing organic matter through supercritical water. CO2 is converted into high-value graphene quantum dots through plasma, and efficient treatment of sludge and high-value utilization of carbon resources are achieved.

The present invention aims to provide a device that can safely and efficiently obtain an antibacterial effect in the coexistence of platinum group element-supported porous silica and alcohol. [Solution] A device comprising a porous silica-containing portion supporting platinum group elements and a gaseous alcohol source, wherein the porous silica-containing portion supporting platinum group elements and the gaseous alcohol source are arranged adjacent to each other such that the gaseous alcohol originating from the gaseous alcohol source permeates through the porous silica-containing portion supporting platinum group elements and comes into contact with the platinum group elements.

Methods of fabricating and packaging ohmic microelectromechanical system (MEMS) switch devices can include constructing a switch device on an insulating substrate. The switch device can have contacts composed of a platinum group metal. The methods can also include forming an oxide layer of the platinum group metal on an outer surface of each of the one or more contacts. The methods can also include bonding an insulating cap to the insulating substrate to hermetically seal the switch device. The bonding can occur in an atmosphere having an oxygen proportion in a range of 0.5% to 30%, such that after the switch device has been hermetically sealed within a sealed cavity, the atmosphere within the sealed cavity has an oxygen proportion in a range of 0.5% to 30%. The platinum group metal can be ruthenium, and the oxide layer of the platinum group metal can be ruthenium dioxide.

The invention discloses a method for preparing primary amine chemicals by hydrogenation amination of aldehyde and ketone through a platinum group monatomic doped nickel-based layered hydroxide catalyst, and belongs to the technical field of heterogeneous catalysis preparation of high-quality chemicals. The method comprises the following steps: by taking aldehyde and ketone chemicals as raw materials and ammonia gas as a gas source, carrying out hydrogenation amination reaction in a reaction solvent under the action of a platinum group monatomic doped nickel-based layered hydroxide catalyst and a hydrogen atmosphere to prepare a primary amine chemical; the platinum group single atom is any one of palladium, platinum, ruthenium, iridium or rhodium; wherein the effective active components on the nickel-based layered hydroxide carrier are composed of nickel metal and other metals, and the other metals are one or more of zinc, magnesium, aluminum, cerium, manganese, zirconium, iron, niobium or copper. The primary amine chemical prepared by the method has very high economic value.

A method for the manufacture of a gasoline particulate filter (GPF) for the treatment of an exhaust gas is disclosed. The method comprises (i) forming a washcoat slurry; (ii) coating a wall-flow filter substrate with the washcoat slurry to form a washcoated substrate; and (iii) calcining the washcoated substrate to form a gasoline particulate filter. The washcoat slurry comprises (a) a platinum group metal selected from the group consisting of Pt, Pd, Rh and mixtures thereof; (b) an oxygen storage capacity (OSC) material; and (c) a C2-C6 aliphatic amino acid.

The invention belongs to the technical field of fuel cell cathode oxygen reduction catalysts, and particularly relates to a high-dispersion platinum group metal-transition metal mesoporous carbon catalyst and a preparation method and application thereof. The high-dispersion platinum-cobalt alloy mesoporous carbon catalyst is prepared in an ammonia water dipping coprecipitation-confinement reduction mode, the problems that in a traditional platinum-cobalt mesoporous carbon catalyst, the utilization rate of precious metal is low, and stability is poor are solved, efficient catalysis of a fuel cell ORR is achieved, and the application prospect is wide. The prepared high-dispersion platinum-cobalt mesoporous carbon catalyst has an ECSA attenuation rate of less than 10% in a disc electrode three-electrode test after long circulation for 60k circles, and has a potential of 0.678 V and 1.356 W / cm < 2 > in a proton exchange membrane fuel cell (PEMFC) test when the current density is 2000mA / cm < 2 >.

This invention provides a collector for recovering platinum group metals (PGMs) from spent catalysts, its preparation method, and its application, belonging to the technical field of precious metal recovery. The collector comprises a copper matrix, a flux, a framework support, and a lattice activator: the copper matrix, flux, and lattice activator are loaded on the surface of the framework support; the copper matrix is ​​elemental copper or a copper-based compound; the flux is boric acid or a borate; the framework support is a porous inorganic material; and the lattice activator is tin, a tin alloy, or a metal sulfide. The collector serves as a collector for the pyrometallurgical recovery of PGMs from spent catalysts. This invention constructs a multi-component synergistic collector composed of a copper matrix, flux, framework support, and lattice activator, which significantly improves the recovery rate of PGMs, especially rhodium, from spent automotive exhaust purification catalysts in pyrometallurgical treatment, and reduces the smelting temperature required for pyrometallurgical treatment, thus significantly reducing energy consumption.

The invention belongs to the field of platinum group metal secondary resource recovery, and discloses a one-step photochemical closed-loop recovery method for a platinum-based catalyst of a hydrogen fuel cell membrane electrode, which is a method for exciting an organic acid ferric salt to oxidize and dissolve the platinum-based catalyst of the hydrogen fuel cell membrane electrode in one step under visible light by using an organic lixivium composed of nitrogen-containing amides and chlorine-containing hydrocarbons. Compared with the prior art, the problems of environmental pollution, redundant recovery operation, high recovery cost, low platinum dissolution rate and the like are solved. According to the method for recycling platinum from the hydrogen fuel cell membrane electrode catalyst, the dissolution rate of precious metal can reach about 95%, the optimal dissolution rate can reach 99% or above, and the method is mild in operation condition, low in energy consumption, environmentally friendly, low in carbon and rich in application scene.

To obtain a vanadium sulfuric acid solution from vanadium pentoxide powder with high efficiency, without using a calcination furnace or reducing agent. [Solution] A cell stack comprising a plurality of unit cells, each comprising a positive electrode cell, an ion exchange membrane, a negative electrode cell, and a bipolar plate in order from the first end, wherein the bipolar plate comprises, in order from the first end, a negative electrode electrode which is a graphite molded plate containing 70% by mass or more of graphite and a positive electrode which is formed by coating a titanium plate with a platinum group metal oxide, and carbon felt is arranged in the negative electrode cell; a positive electrode tank connected to each of the positive electrode cells so as to be able to circulate fluid; a negative electrode tank connected to each of the negative electrode cells so as to be able to circulate fluid; and a reaction tank for reacting vanadium pentoxide powder with a vanadium sulfuric acid solution, is provided as an apparatus for producing a vanadium sulfuric acid solution for a vanadium redox flow battery.

A method of treating a process waste stream contaminated with fluorinated hydrocarbons, such as per- and / or polyfluoralkyl substances (PFAS), the method comprising: adding a fluoride anion scavenger (e.g. calcium hydroxide) to the process waste stream; adding a base (e.g. sodium hydroxide or lithium hydroxide) to the process waste stream; and heating the process waste stream after addition of the fluoride anion scavenger and the base to defluorinate the fluorinated hydrocarbons liberating fluoride anions which are scavenged by the fluoride scavenger. The heating step may be performed in the presence of a platinum group metal catalyst.

The invention discloses a method for efficiently leaching platinum group metal in a waste automobile catalyst, and belongs to the field of rare and precious metal smelting. The method comprises the following steps: a leaching process: mixing the hulled waste automobile catalyst with a leaching agent, carrying out acid leaching in an acidic solution for a period of time, adding a complexing agent to complex platinum group metals, leaching for a period of time, and filtering to obtain a pregnant solution rich in the platinum group metals and carrier residues; wherein the leaching agent is a cerium-containing compound; a resin adsorption process: adsorbing the pregnant solution through an adsorption column filled with adsorption resin to obtain an adsorbed solution; and an elution process: washing the adsorbed adsorption resin with water and eluting the platinum group metal step by step, and regenerating the eluted adsorption resin for cyclic utilization. The method aims at avoiding generation of toxic and harmful substances (chlorine and NOx) and use of highly toxic cyanide in an existing wet process, environmental pollution and potential safety hazards are fundamentally eliminated, and meanwhile the leaching efficiency of the platinum group metal is remarkably improved.

According to the present invention, a catalyst-coated ion conductive membrane is provided, the catalyst-coated ion conductive membrane comprising an anode catalyst layer, a cathode catalyst layer, and an ion conductive membrane layer disposed between the anode catalyst layer and the cathode catalyst layer. The anode catalyst layer comprises an anode electrocatalyst and an ion conductive polymer. The anode electrocatalyst comprises particles of a platinum group metal or a platinum group metal alloy. The anode electrocatalyst is present in the anode catalyst layer at a loading of less than 0.20 mg platinum group metal / cm 2 The loading of the anode catalyst layer is present in the anode catalyst layer. The cathode catalyst layer comprises an ion conductive polymer and a cathode electrocatalyst comprising platinum-containing particles and a carbon-based support. The carbon-based support comprises individual primary particles or aggregates of primary particles, the primary particles comprising pores. Some of the platinum-containing particles are located within the pores and some of the platinum-containing particles are located on an outer surface of the carbon-based support. The platinum-containing particles on the outer surface of the carbon-based support have a median average particle size of < 3.0 nm. Less than 50% of the surface area of the platinum-containing particles is in contact with the ion conductive polymer of the cathode catalyst layer. A method of making a catalyst-coated ion conductive membrane and a fuel cell comprising an ion conductive membrane are also provided.

The present disclosure relates to a process for preparing a coating composition (v) based on a methanol-terminated silicone / polyurethane hybrid prepolymer, the process comprising the steps of: (A) preparing a methanol-terminated silicone / polyurethane hybrid prepolymer; and (B) preparing the coating composition (v) based on the methanol-terminated silicone / polyurethane hybrid prepolymer by mixing the methanol-terminated silicone / polyurethane hybrid prepolymer prepared in (A) ((v) (a)) with optionally a cured silicone elastomer powder (v) (b); optionally silicon-free organic particles and / or microparticles (v) (c); a polyorganosiloxane (v) (d) containing at least two or alternatively at least three silicon-bonded hydrogen (-Si-H) groups per molecule; a polyisocyanate having three or more isocyanate groups per molecule, the polyisocyanate being in an amount such that the molar ratio of-OH groups of (v) (a) to-NCO groups in (v) (f) in the methanol-terminated silicone / polyurethane hybrid prepolymer-based coating composition (v) is from 0.95: 1 to 1.05: 1; and a platinum group metal-based catalyst (v) (g). The coating composition based on the methanol-terminated silicone / polyurethane hybrid prepolymer is prepared for use in silicone leather composites.

The present invention relates to a catalytic material for treating an exhaust gas produced by a natural gas engine, which catalytic material comprises a molecular sieve and a platinum group metal (PGM) supported on the molecular sieve, wherein the molecular sieve has a framework comprising silicon, oxygen and germanium, and has a content of heteroatom T-atoms of ≤about 0.20 mol %, wherein the germanium is present in an amount of from 15 to 20 mol %. The present invention further relates to a catalyst article and a compressed natural gas combustion and exhaust system.

The invention relates to the technical field of tubular oxygen sensors for vehicles, in particular to a ceramic sensitive element and a preparation method and application thereof.The preparation method of the ceramic sensitive element comprises the steps that S2, platinum group metal slurry is coated on the outer wall of a zirconium oxide semi-ceramic substrate, co-sintering is conducted, and the ceramic sensitive element is obtained; the outer wall of the zirconia ceramic matrix is covered with a first platinum group metal layer; s3, coating the outer wall of the first platinum group metal layer with an electrode material, coating the outer wall, the inner wall and the bottom end of the zirconia ceramic matrix with the electrode material, and sintering to form an outer electrode ring layer on the outer wall of the first platinum group metal layer and form an outer electrode lead on the outer wall of the zirconia ceramic matrix, so as to obtain the electrode. An inner electrode ring layer and an inner electrode lead are formed on the inner wall of the zirconia ceramic substrate, and a first bottom electrode and a second bottom electrode are arranged at the bottom end of the zirconia ceramic substrate; and S5, coating the platinum group metal salt solution on the outer wall of the protective coating, and sintering to form a second platinum group metal layer on the outer wall of the protective coating.

To provide a platinum group metal recovery agent with a novel structure different from conventional platinum group metal recovery agents, and to provide a method for recovering platinum group metals by a mechanism different from conventional methods. [Solution] A platinum group metal recovery agent comprising a nitrogen-containing heterocyclic aromatic compound having an electron-donating group in the heterocyclic side chain. The platinum group metal recovery agent wherein the nitrogen-containing heterocyclic aromatic compound is a 6-membered ring. According to the present invention, it is possible to provide a platinum group metal recovery agent with a novel structure, and a platinum group metal recovery method that precipitates and / or adsorbs platinum group metals by a novel mechanism.

The present application is a curable silicone composition comprising: (A) an organopolysiloxane which is an addition reaction product of (a) a compound represented by general formula (1) and (b) a compound represented by general formula (2), and has an average of 4 or more methacryl groups in one molecule, p is an integer of 10 or more, R 1 is a monovalent organic group having 1 to 12 carbon atoms, R 2 is an alkenyl group having 2 to 12 carbon atoms, q is an integer of 0 to 20, R 3 is a monovalent organic group having 1 to 12 carbon atoms, Z 1 is a divalent organic group having 1 to 10 carbon atoms; (B) an organic peroxide; (C) an organohydrogenpolysiloxane; and (D) a platinum group metal catalyst. Thus, a curable silicone composition which can be used as an adhesive, which is excellent in curability, and which does not cause curing failure or bubbling even in the presence of an addition reaction catalyst poison or moisture or the like on the surface of an adherend is provided.

To provide a soft magnetic alloy powder capable of obtaining a magnetic core excellent in all of magnetic current superposition characteristics, magnetic permeability, and withstand voltage SOLUTION: The soft magnetic powder is represented by a compositional formula (Fe1-pX1p) 100 - (a + b + c + d + e) BaPbSicCdX2e (atomic ratio). The X1 part is one or more kinds selected from Co and Ni, and the X2 part is one or more kinds selected from Ti, Zr, Hf, Nb, Ta, Mo, Cr, W, Al, Ga, Ag, Zn, S, Ca, Mg, V, Mn, Sn, As, Sb, Bi, N, Au, Cu, rare earth elements and platinum group elements. 0 ≤ p ≤ 0.5, 2.00 ≤ a ≤ 20.00, 0.00 ≤ b ≤ 14.00, 0.00 ≤ c ≤ 10.00, 0.00 ≤ d ≤ 5.00, 0.00 ≤ e ≤ 3.00, and 70.00 ≤ 100 - (a + b + c + d + e) ≤ 96.00.SELECTED DRAWING: Figure 1