72 results about "Platinum chloride" patented technology

A method for manufacturing strepto-shaped cobalt platinum alloy by using octreotide acetate as a template mainly comprises the steps that the octreotide acetate is dissolved through pH2-3 hydrochloric acid, the octreotide acetate is regulated into an acid solution, a cobalt chloride solution and a platinum chloride solution which are the same in amount are simultaneously added in the regulated solution with the mole ratio of 1:10-20, the solution is then put in a water bath constant temperature oscillator, and hatching is carried out for 20-26 hours under the temperature of 13-25 DEG C at 100-200 rpm.; then, the reducing agent sodium borohydride is added in the hatched solution at a time so that the hatched solution is changed into dark black from light yellow, and the strepto-shaped cobalt platinum alloy is obtained, wherein the mole ratio of the reducing agent sodium borohydride and the octreotide acetate is 1:25-35. The method for manufacturing the strepto-shaped cobalt platinum alloy by using the octreotide acetate as the template has the advantages that the manufacturing technology is simple, conditions are mild, the strepto-shaped cobalt platinum alloy is cheap and easy to obtain, the reaction is easy to control, the productivity is high, and mass production is easy to achieve.

The invention discloses an environment-friendly non-mercury catalyst for acetylene-method chloroethylene synthesis and a preparation method thereof. According to the non-mercury catalyst disclosed by the invention, a precious metal chloride, namely any of gold chloride, platinum chloride and palladium chloride, is adopted as a main active substance, wherein the content of the precious metal chloride accounts for 0.5-5% of the weight of the catalyst; an assistant active ingredient is one or more than one of non-precious metal chlorides, namely bismuth chloride, cuprous chloride, cerium chloride and zinc chloride, wherein the content of the non-precious metal chlorides accounts for 1-10% of the weight of the catalyst; and a support is one of coconut shell charcoal, fruit shell charcoal and coal charcoal. The non-mercury catalyst is prepared by a conventional impregnation method. The preparation method of the catalyst is simple and is environmental-friendly, few byproducts are generated, the stability of the prepared catalyst is good, the environmental pollution caused by mercury catalysts is avoided, the service life of the catalyst is prolonged, the acetylene conversion ratio can reach 96-99%, and the selectivity to chloroethylene is not lower than 98%.

The present invention respectively uses water soluble platinum chloride, ruthenium chloride or bromide and non-water-soluble platinum ruthenium olefine complex as raw material, in which the mole ratio of platinum and ruthenium is 1:0.5-1, its organit solvent is acetone, ethyl alcohol or dichloromethane, the volume ratio of organic solvent and ion liquid is 0.5-2:1, its adopted ion liquid is water soluble or non-water-soluble, and the content of noble metal in the organic solution is 2-10 g/L, then the active carbon can be added to make adsorption, then the above-mentioned materials are stirred, the pure hydrogen gas or hydrogen gas and nitrogen gas mixed gas is introduced to make reduction, and then the above-mentioned material is centrifugatized, washed with organic solvent and dried.

A provided method for low-mercury catalyst with good heat stability comprises preparation of active carbon, preparation of an adsorption solution, and adsorption processing. The adsorption processing steps comprises ultrasonic assisted adsorption, microwave assisted adsorption and vacuum penetration adsorption. The prepared low-mercury catalyst comprises, in percent by weight, 4.3% of mercuric chloride, 8.6% of zinc chloride, 8.6% of palladium chloride, 2.87% of platinum chloride, 2.87% of tetrabutyl ammonium chloride, 2.87% of tripotasium triphenylphosphine-3,3',3''-trisulfonate, and 0.18% of water. The low-mercury catalyst possesses the mechanical strength of 98.6%, the granularity of 3-6 mm (98%), the bulk density of 460 g/L, and the mercuric chloride ignition loss of 0.39%. The prepared low-mercury catalyst is good in heat stability and low in mercuric chloride loss rate. When the low-mercury catalyst is applied to vinyl chloride synthesis reaction, the acetylene conversion rate is 99.93%, the vinyl chloride selectivity is close to 100%, and the vinyl chloride yield is 95.2%.

The present invention relates to a method for synthesizing highly dispersed supported platinum catalyst. More particularly, the present invention relates to a method of synthesizing highly dispersed supported platinum catalyst comprising:dissolving a reducing agent in a solvent to produce a solution, dissolving a platinum chloride to the same solvent; adding a carbon support and platinum in a predetermined ratio to the above mixed solution, agitating the mixture, performing ultrasonic treatment, and performing heat treatment; and adding a HCl solution, agitating the mixture, separating the precipitates via filtration to produce a catalyst, and then washing the catalyst with distilled water, thereby obtaining an active highly dispersed supported platinum catalyst which has excellent electric charge activity, uniformly-sized platinum particles and relatively high specific surface area.

The invention relates to an ammonia gas sensor loaded with platinum particles and a preparation method thereof, and belongs to the field of gas sensors. A gas sensitive material is composed of the platinum particles and a graphene film. The platinum particles are loaded on the graphene film carrier. The method includes the following steps: (1) preparing the graphene film and keeping for later use;(2) using ultraviolet ozone to modify the graphene film obtained in the step (1) and keeping for later use; and (3) impregnating the modified graphene film in the step (2) in a platinum chloride solution, and heating and insulating the graphene film after the impregnation so as to decompose chloroplatinic acid into the platinum particles to obtain the ammonia gas sensitive material loaded with the platinum particles on the graphene film. According to the preparation method, through the ultraviolet ozone treatment, the graphene film is firstly modified by introducing an oxygen-containing functional group, increasing defect sites and adsorption sites of the film, changing resistance characteristics and wettability of the film and loading the platinum particles onto the graphene film. The gas sensitive sensor prepared according to the method has excellent room temperature response performance to ammonia gas.

The invention discloses a preparation method of a multinuclear platinum-polymer nanometer core-shell microsphere. The preparation method comprises the steps: firstly, synthesizing a resorcinol-formaldehyde resin (RF) nanometer microsphere from resorcinol and formaldehyde serving as precursors, sodium hydroxide or ammonia water serving as a catalyst and an alkalinity regulator as well as surfactants CTAB and F127 serving as co-stabilizers in an alcohol-water solution by using an improved Stuber method; and then, preparing a multinuclear nanometer microsphere with resorcinol-formaldehyde resin (Pt@RF) coated outside platinum from chloroplatinic acid or platinum chloride serving as a platinum source by using a hydrothermal method. The synthesis method can be expanded to prepare other preciousmetal-polymer core-shell microspheres, for example, the synthesis method can be used for preparing composites such as multinuclear Au@RF and Pd@RF. In addition, precious metal-porous carbon materialssuch as Pt@C, Au@C and Pd@C can be prepared by taking the precious metal-polymer core-shell microspheres as precursors and can be applied to the field such as catalysis or lithium ion batteries.

The present invention provides a method for preparing a low mercury catalyst by using activated carbon with a high carbon tetrachloride adsorption value. The method comprises gas phase adsorption, absorption solution preparation and microwave absorption. The microwave absorption comprises first-stage microwave absorption. The first-stage microwave absorption is performed at the temperature of 60 DEG C, the microwave wavelength is 139 mm, the frequency is 2650 MHz, the power is 310 w, and the adsorption treatment lasts for 10 minutes. The method has the beneficial effects that the low mercury catalyst prepared by the method provided by the present invention comprises the following components in percentages by weight: 4.91% of chlorinated mercury, 4% of zinc chloride, 2% of palladium chloride, 2% of platinum chloride, 2% of tetrabutyl ammonium chloride, 2% of triphenylphosphine sulfonic acid potassium and 0.20% of water; the mechanical strength is 99.6%, the particle size is 3-6 mm (99.8%), and the bulk density is 516 g/L; and In the synthesis reaction of vinyl chloride, the conversion rate of acetylene reaches 99.98%, and the yield of the vinyl chloride reaches 97.3%.

A method for manufacturing electrodes on a semiconducting material of type II-VI or on a compound of this material. The electrodes are preferably in gold or platinum and are formed by electrochemical deposition of gold or platinum from a solution of gold or platinum chloride in pure hydrochloric acid.

The invention provides a double platinum (II) pyridine complex, a synthetic method and applications thereof. In a structural formula (a) of the double platinum (II) pyridine complex, X is bipyridine connected by linking groups. The invention adopts 4, 6-diphenyl 2, 2'-bipyridyl as ligand which reacts with potassium chloroplatinite, so as to synthesize 4, 6-diphenyl 2, 2'-bipyridyl platinum chloride (II), and X is used as bridging ligand to synthesize the double platinum (II) pyridine complex. The compound can be used as the organic photoelectric materials.

Among various factors influencing performances of organic electronic components, interfacial property is the most important one influencing the performance of the whole component. In the invention, a series of maleimidotriethoxy silane-series compounds are synthesized, wherein a monomolecular film layer is formed on a surface of an oxide substrate through a self-assembling method, thereby modifying the substrate. Dicyclopentadiene platinum chloride is employed as a catalyst to perform hydrosilylation. Nuclear magnetism is carried out for representation. A test result proves that the catalyst allows catalytic addition to a compound having an amino group to be carried out high-efficiently, and furthermore, silicone on a silanoethoxyl group is connected to a position of a terminal group of a double bond before addition. A self-assembling method is utilized to form the monomolecular film layer on the surface of the oxide substrate. A Young contact angle instrument and XPS is employed for representation, which proves that a flat monomolecular film layer is formed on the surface of the oxide substrate.

The invention discloses a method for preparing a dithiocoumarin benzothiophene compound shown as a formula (IV) through platinum catalysis. The preparation method comprises the following steps: preparing a reaction product from a 2-mercaptocinnamic acid compound as shown in a formula (I), carbon disulfide as shown in a formula (II) and a 2-bromophenol compound as shown in a formula (III) by takingplatinum chloride as a catalyst, sodium ethoxide as alkali and acetonitrile as a medium, and carrying out aftertreatment on the reaction product to obtain the dithiocoumarin benzothiophene compound.The method has the advantages of wide raw material source, simple operation, simple treatment after reaction, excellent yield and the like. The method has an important application prospect in the industrial field of synthesis of related medical intermediates.

The invention discloses a catalyst to prepare 1,3-dihydroxyacetone and a preparation method thereof. The preparation method includes the steps of (1) preparing ZnAl-HTLc, to be specific, dissolving azinc salt and an aluminum salt in deionized water to obtain solution A, preparing solution B with Na2CO3 and NaOH, quickly mixing the solution A and the solution B, allowing refluxing reaction, centrifugally washing, and drying to obtain ZnAl-HTLc; (2) preparing a composite supporter, to be specific, adding the prepared ZnAl-HTLc into glucose monohydrate solution, mixing well, transferring the mixture to a polytetrafluoroethylene reactor, allowing hydrothermal reaction, cooling, and washing to obtain ZnAl-HTLc/carbon composite supporter; (3) preparing the catalyst, to be specific, preparing asolution with platinum chloride, neodymium nitrate and cerium nitrate, adding the solution to the composite supporter, impregnating, drying, calcining, and activating with hydrogen to obtain the catalyst. The catalyst has good activity, selectivity and stability and has a good application prospect.

The invention belongs to the technical field of catalysis and particularly relates to a preparation method of nano platinum oxide powder. The preparation method comprises the following steps: step one, adding platinum chloride into distilled water and stirring until platinum chloride is completely dissolved; then slowly dropwise adding an alkali solution until no precipitate is produced, filteringand washing to obtain platinic hydroxide precipitate; step two, adding the platinic hydroxide precipitate into absolute ethyl alcohol for stirring and uniformly dispersing; then adding crown ether and stirring until crown ether is completely dissolved to obtain mixed ethanol liquid; step three, carrying out thermostatic standing on the mixed ethanol liquid for 2 to 5 hours, carrying out gradientdepressurization, standing for 4 to 8 hours and filtering to obtain crystal; step four, putting the crystal into a ball-milling device and carrying out constant temperature ball-milling reaction for 1to 2 hours to obtain crystal fine powder; step five, adding the crystal fine powder into electrolyte, carrying out electrolytic reaction for 2 to 4 hours and filtering to obtain precipitate; step six, putting the precipitate into absolute ethyl alcohol, carrying out ultrasonic washing for 30 to 40 minutes, filtering and drying to obtain the nano platinum oxide powder. According to the preparationmethod disclosed by the invention, a double passivation mode is utilized, so that the nano-structure of platinum oxide is ensured; in addition, the agglomeration is avoided.

The invention belongs to the technical field of organic photoelectric material, and more specifically relates to a near infrared organic dye containing cyclopentadiene selenium furan, and a preparation method thereof. The chemical structure of the near infrared organic dye containing cyclopentadiene selenium furan is simple; the near infrared organic dye containing cyclopentadiene selenium furan is an organic photoelectric material containing cyclopentadiene selenium furan structure, possesses the properties of aromatic and nonalternant hydrocarbons at the same time, is capable of absorbing near infrared light, possesses extremely low oxidation potential and excellent electrochemical stability. The near infrared organic dye containing cyclopentadiene selenium furan is prepared through one-step intramolecular cyclisation reaction of a selenophen derivative precursor under the catalytic effect of platinum chloride. The steps are few; the yield is high; and the cost is low.

The invention belongs to the technical field of sugar chemistry, and relates to a glycosylation reaction catalyst, a glycosylation method and application. The glycosylation method takes platinum chloride (IV) as a catalyst and is simple to operate, wide in substrate application range and high in reaction regioselectivity and stereoselectivity, and application of the method in glycosylation reaction is disclosed. According to the method, alpha-configuration O-glycosyl trichloroacetimidate is used as a donor, platinum (IV) chloride is used as a catalyst of an acid-base catalysis way, and a product mainly having a beta-configuration is obtained. In the method, a catalyst and a glycosyl acceptor are firstly combined to form a catalyst-acceptor adduct, so that proton acidity and oxygen affinity are increased, donor activation is enhanced, and acceptor transfer is carried out. According to the invention, the ligand binding capacity of platinum (IV) chloride and the characteristic that a diol receptor can be used as a bidentate ligand thereof are fully utilized, so that the method is not only suitable for construction of high-stereoselectivity glycosidic bonds of monohydroxyl receptors, but also can realize glycosidic bond construction with high regioselectivity and stereoselectivity of receptors of 1,3-diol, 1,2-cis-diol, 1,2-trans-diol, and 1,2,3-triol structures.

The invention discloses an electrocatalytic oxidation coated electrode for treating oilfield wastewater and a preparing method thereof, wherein the preparing method comprises the following steps: preparing a titanium-based polar plate; mixing arbitrary one or more of iridium trichloride (Cl3Ru), tantalum chloride (Cl5Ta), platinum chloride (Cl4Pt2) and iridium chloride (IrCl3H2O) with ethanol, and after mixing evenly, coating the surface of the titanium-based polar plate with a hair brush; coating the MnO2 surface layer; drying; and sintering at the high temperature to form the titanium-based coated electrode. The electrode having better structural strength can be obtained by the method, and the effective reaction area and the service life of an electrode material are improved. The electrode can effectively remove dispersed oil and emulsified oil in the oily wastewater, can overcome the disadvantage that a common electrode lose efficacy because of being easily polluted by oil stain, can be widely and effectively applied to the fields of oilfield wastewater treatment and reinjection and the like, has the advantages of good treatment effect, good oil pollution resistance performance, small electrode loss, simple preparation method and operation, and good reproducibility, and is suitable for large-scale production and popularization.

The invention discloses a polyphenylacetylene preparing method initiated by phenylsilane. The preparing method includes the steps that under catalysis of (1,5-cyclooctadiene) platinum chloride, phenylsilane is used as initiator, phenylacetylene is subjected to polymerization reaction, and polyphenylacetylene is obtained after reaction is finished. As the new catalyst and initiator are adopted in the preparing method, the molecular weight of the product polyphenylacetylene is higher, and the molecular weight distribution range is narrower.

The invention belongs to the technical field of precious metal catalysts, and particularly relates to a preparation method of a porous platinum oxide catalyst. The method comprises the following stepsthat 1, platinum chloride is added into distilled water for even stirring to obtain a platinum ion solution; 2, aluminium chloride is added into the platinum ion solution, stirring is continued untilcomplete dissolution, then high-substituted hydroxypropyl cellulose is slowly added, and even stirring is conducted to obtain aluminium-platinum dispersion liquid; 3, ammonia gas is introduced circularly by means of sealed reflux until no sediment is generated, so that suspended dispersion liquid is obtained; 4, the suspended dispersion liquid is subjected to reduced pressure distillation reaction for 2-4 h, after cooling, viscous liquid is obtained, and then the viscous liquid is added into a mould for constant-temperature pressurizing solidification reaction for 2-4 h to obtain mixed solid;5, the mixed solid is immersed in distilled water for low-temperature stirring reaction for 2-4 h, and then porous solid is obtained after removal; 6, the porous solid is soaked in a hydrochloric acid solution for sealed micro-boiling reaction for 20-50 min, and then through filtering, washing and sintering, the porous platinum oxide catalyst is obtained.