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38 results about "Cobaltocene" patented technology

Cobaltocene, known also as bis(cyclopentadienyl)cobalt(II) or even "bis Cp cobalt", is an organocobalt compound with the formula Co(C₅H₅)₂. It is a dark purple solid that sublimes readily slightly above room temperature. Cobaltocene was discovered shortly after ferrocene, the first metallocene. Due to the ease with which it reacts with oxygen, the compound must be handled and stored using air-free techniques.

Synthetic method for MCMBs (mesocarbon microbeads) with controllable particle sizes

The invention provides a synthetic method for MCMBs with controllable particle sizes. The synthetic method is characterized by comprising the following steps: step one, coal tar pitch, graphite after grinding and sieving, and a quantitatively weighed catalyst are added into a reaction still, wherein the mass ratio of the graphite to the coal tar pitch is (1:1,000)-(1:100), the catalyst comprises one or more of ferrocene, cobaltocene, nickelocene, ferric chloride and iron oxide, and the mass ratio of the catalyst to the coal tar pitch is (1:1,000)-(1:100); the mixture is sealed, stirred, heated and thermally insulated, the heating temperature is 410 DEG C-480 DEG C, and the thermal insulation is performed for 0.1-4 hours; after natural cooling, the mixture is heated and washed cleanly by a wash oil solvent, and is subjected to centrifugal filtration; step 2, the product of the step one is carbonized, the carbonizing temperature ranges from 1,000 DEG C to 1,500 DEG C, and the thermal insulation time is 1-10 hours; and step three, the product of the step two is subjected to graphitization treatment, and the graphitization temperature ranges from 2,500 DEG C to 3,000 DEG C.
Owner:CHINA NAT OFFSHORE OIL CORP +2

Carbon-nano-tube composite microwave absorbing material and preparation method thereof

ActiveCN107032325AStrong environmental corrosion resistanceLight in massCarbon compoundsMagnetic/electric field screeningCarbon nanotubeRare earth
The invention belongs to the technical field of microwave absorbing materials, and relates to a carbon-nano-tube composite microwave absorbing material and a preparation method thereof. According to the material, a catalyst is dissolved in a liquid carbon source containing an additive to prepare a precursor solution, then, a pressureless sintering method is adopted to prepare the composite microwave absorbing material of which matrixes are carbon nano tubes, iron particles and cobalt-nickel alloy particles are added in the inner walls of the carbon nano tubes, and rare-earth compounds are attached to the outer walls of the carbon nano tubes; the liquid carbon source is a 1,2-dichloroethane solution, the additive is lanthanum nitrate, and ethyl alcohol which promotes the dissolution of lanthanum nitrate is further added in the liquid carbon source; the volume ratio of the 1,2-dichloroethane solution to ethyl alcohol is 9:1, and the catalyst contains 33.93 wt.% of ferrocene, 33.19 wt.% of cobaltocene and 32.88 wt.% of nickelocene. The carbon-nano-tube composite microwave absorbing material has the advantages of being light in weight, wide in absorption frequency band, extremely improved in microwave absorbing performance, high in environmental corrosion resistance and wide in application range; carbon-nano-tube filler prepared by the preparation method is high in purity and few in impurity.
Owner:EAGLES MEN AERONAUTIC SCI & TECH GRP

Method for rapidly preparing carbon nanotube-two-dimensional titanium carbide composite material

The invention relates to a method for rapidly preparing a carbon nanotube-two-dimensional titanium carbide composite material, and belongs to the field of material preparation. According to the method, two-dimensional titanium carbide and metallocene powder (ferrocene, nickelocene and cobaltocene) are mixed uniformly; and then the carbon nanotube-two-dimensional titanium carbide composite material is prepared rapidly by adopting a microwave heating method. The preparation method is simple in method, low in cost, and capable of rapidly preparing a target product at a normal-temperature environment, without requiring a high temperature, a vacuum system, an inert protection apparatus, a carbon source and a catalyst; in addition, by virtue of the microwave heating method, industrial large-scale production can be realized conveniently; and the prepared carbon nanotube-two-dimensional titanium carbide composite material can be used in the fields of energy storage, catalysis, sensing, adsorption and the like, and has a highly remarkable application value.
Owner:SOUTHEAST UNIV

Nucleotide triphosphate with an electroactive label conjugated to the gamma phosphate

A nucleotide triphosphate (NTP) participates in a phosphorylation reaction, wherein a phosphate group is transferred from the NTP to a substrate by a kinase. Provision in a kinase reaction of a NTP whose gamma phosphate is conjugated to an electroactive label results in the transfer of the gamma phosphate-electroactive label conjugate from the NTP to the substrate. The electroactive label is an organic moiety such as a quinone or a mtrohetercycle, or is a metallocene such as a ferrocene or a cobaltocene. Upon transfer of the gamma phosphate-electroactive label conjugate to an electrode-bound substrate by a kinase, the phosphorylation event is detected electrochemically by cyclic voltammetry. Phosphorylation can also be detected by mass spectrometry of a substrate carrying the electroactive label-conjugated gamma phosphate. NTP comprising the gamma phosphate-electroactive label conjugate is used in methods of detecting the presence of a kinase in a sample, screening candidate compounds that modulate kinase activity, and in methods of diagnosing a disease associated with a kinase.
Owner:海因茨-伯恩哈德·克拉茨 +2

Synthesis method of pheniramine maleate

The invention belongs to the field of medical chemistry, and in particular relates to a synthesis method of pheniramine maleate. The method includes the following steps: (1) reacting benzyl cyanide with acetylene gas in the presence of a cobaltocene catalyst to generate benzyl pyridine; (2) reacting benzyl pyridine with N,N-dimethyl chloroethane under the catalysis of sodium amide to generate pheniramine, and conducting neutralization reaction on pheniramine with maleate to generate pheniramine maleate.
Owner:张燕梅

Electroactive Ionic Liquids And Surface-Modified Substrates Containing Them

The present invention relates an electro-active polymeric ionic liquid including imidazolium-based molecules, said imidazolium-based molecule comprising each at least: —one imidazolium moiety associated with a negatively-charged counter-ion, and —one reducible group selected from: Formula (IV), —an anthraquinone derivative of formula (IV): with R1 representing a hydrogen atom or a C1-C6-alkyl group, —a viologen group, and —a metallocene reducible group such as a cobaltocene group.
Owner:UNIVERSITÉ PARIS CITÉ +1

Cobaltocene cation monophosphine ligand and its synthesis and uses

The invention relates to a cobaltocene cationic phosphine ligand (the general formula is I)and its synthesis and the application in Suzuki reaction (preparation of biphenyl with bromobenzene and borophenylic acid ) in catalytic ionic liquid, R represents cyclohexyl, isopropyl or tert-butyl group. The complex generated with said compound and palladium bichloride can effectively catalyze Suzuki coupling reaction with molar concentration of 1.0%.
Owner:HUAZHONG NORMAL UNIV

Synthetic method for 2-picolinic acid

The invention provides a synthetic method for 2-picolinic acid, belonging to the field of organic chemical synthesis. The synthetic method comprises the following steps: adding acetonitrile and a catalyst composed of cobaltocene, manganese acetate and cobalt acetate into a reaction vessel, introducing acetylene at room temperature and carrying out stirring and heating for a reaction so as to prepare 2-methylpyridine; heating 2-methylpyridine with a heating bed so as to turn 2-methylpyridine into steam, then mixing the 2-methylpyridine steam with ammonia gas, water vapor and air and carrying out catalytic oxidation via a catalyst layer so as to prepare 2-pyridinecarbonitrile; and adding 2-pyridinecarbonitrile into a sodium hydroxide solution, successively carrying out heating, stirring reaction, cooling to room temperature and pumping filtration, washing a filter cake and carrying out drying and crystallization so as to obtain 2-picolinic acid. The synthetic method provided by the invention has the advantages of high yield, simple production process, easiness in product separation and low production of waste gas, waste water and industrial residues.
Owner:ANHUI XINGYU CHEM

Cobaltocene cationic-based corrosion inhibitor as well as preparation method and application method

The invention relates to a cobaltocene cationic-based corrosion inhibitor as well as a preparation method and an application method. Tricyclazole is taken as a linking group, a novel cobaltocene cationic-based corrosion inhibitor prepared by introducing alkyl chains with different lengths on a cobaltocene cation, the preparation of the corrosion inhibitor utilizes ion exchange resin to carry out anionic replacement, the reaction is simple and efficient, the critical micelle concentration (cmc) of the cobaltocene cationic-based corrosion inhibitor is obviously lower than that of a traditional quaternary ammonium type corrosion inhibitor, and compared with a currently common-used corrosion inhibitor, the structure of the corrosion inhibitor combines double characteristics of inorganic corrosion inhibitor and organic corrosion inhibitor. The cobaltocene cationic-based corrosion inhibitor as well as the preparation method and the application method not only can be applied to the surface acidification process of carbon steel and products of the carbon steel, but also can reduce the corrosion of hydrochloric acid on the steel products, and have the advantages of being less in use amount,high in efficiency, good in water solubility, wide in application range and the like.
Owner:NORTHWESTERN POLYTECHNICAL UNIV +1

Cobaltocene cation-based waterborne polyurethane, corrosion inhibitor system and preparation method thereof

The invention relates to cobaltocene cation-based aqueous polyurethane, a corrosion inhibitor system and a preparation method thereof. An active functional group, namely alcohol hydroxyl, is introduced to cobaltocene cation by taking a triazole ring as a connecting group, and then the cobaltocene cation-based aqueous polyurethane is obtained through simple and convenient step-by-step addition polymerization reaction and ion exchange reaction, thereby realizing low-cost synthesis and high-efficiency polymerization. The structure of the target cobaltocene cation-based aqueous polyurethane has many advantages of inorganic, organic and polymer corrosion inhibitors compared with corrosion inhibitors commonly used at present. The product of the cobaltocene cation-based aqueous polyurethane can be used as a corrosion inhibitor to slow down the corrosion of hydrochloric acid to iron and steel products in practical applications such as pickling.
Owner:西北工业大学太仓长三角研究院 +1

High-light-resistant color change indicating device

The invention relates to a high-light-resistant color change indicating device. The high-light-resistant color change indicating device comprises a substrate layer, an indicating layer and a blockinglayer, wherein the indicating layer is stacked on the surface of the substrate layer and comprises an indicating part, the indicating part contains a volatile material and a hydrophilic material, thevolatile material is selected from one or more of ferrocene, cobaltocene, vananocene and chromocene, and the hydrophilic material can adsorb water vapor in air; the blocking layer is attached to the surface of the indicating layer and can be stripped from the surface of the indicating layer; and the substrate layer and the blocking layer can block the water vapor and the volatile material. The high-light-resistant color change indicating device is high in illumination-resistant ability and high in applicability.
Owner:SHENZHEN NINE STARS PRINTING & PACKAGING GRP

Nucleotide triphosphate with an electroactive label conjugated to the gamma phosphate

A nucleotide triphosphate (NTP) participates in a phosphorylation reaction, wherein a phosphate group is transferred from the NTP to a substrate by a kinase. Provision in a kinase reaction of a NTP whose gamma phosphate is conjugated to an electroactive label results in the transfer of the gamma phosphate-electroactive label conjugate from the NTP to the substrate. The electroactive label is an organic moiety such as a quinone or a nitroheterocycle, or is a metallocene such as a ferrocene or a cobaltocene. Upon transfer of the gamma phosphate-electroactive label conjugate to an electrode-bound substrate by a kinase, the phosphorylation event is detected electrochemically by cyclic voltammetry. Phosphorylation can also be detected by mass spectrometry of a substrate carrying the electroactive label-conjugated gamma phosphate. NTP comprising the gamma phosphate-electroactive label conjugate is used in methods of detecting the presence of a kinase in a sample, screening candidate compounds that modulate kinase activity, and in methods of diagnosing a disease associated with a kinase.
Owner:KRAATZ HEINZ BERNHARD +2

Synthetic method for anti-amebic-dysentery drug phanquone

InactiveCN108239088AAvoid high demands on corrosion resistanceReduce manufacturing costOrganic chemistryDIETHYL SEBACATEPotassium
The invention discloses a synthetic method for the anti-amebic-dysentery drug phanquone. The synthetic method comprises the following steps: adding 5-hydroxy-6-methoxy-4,7-diazaphenanthrene and a potassium chloride solution into a reaction vessel, raising a solution temperature, controlling a stirring speed, and carrying out a reaction; and adding a sodium sulfate solution, raising the solution temperature, then adding a diethyl sebacate solution, adding cobaltocene powder in batches within a certain period of time, carrying out a reaction, lowering the temperature, adjusting a pH value, thencarrying out washing with a benzyl chloride solution a plurality of times, then carrying out washing with a 2,3-dimethylbutane solution a plurality of times, carrying out recrystallization in a 2,4-dichlorotoluene solution, and then carrying out dehydration with a dehydrating agent so as to obtain the finished phanquone.
Owner:CHENGDU QIANYE LONGHUA PETROLEUM ENG TECH CONSULTING

Porous graphene and preparation method in magnetic field environment

InactiveCN111333056AUniform pore sizeWide range of pore size distributionProcess control/regulationGraphenePorous graphenePtru catalyst
The invention belongs to the technical field of graphene preparation, and particularly relates to porous graphene and a preparation method in a magnetic field environment. By taking ferrocene or nickelocene or cobaltocene as a catalyst precursor, and through low temperature hydrothermal treatment, ferrocene or nickelocene or cobaltocene is combined with an oxygen-containing functional group of graphene oxide and anchored in a magnetic field provided by a permanent magnet, the ferrocene is reduced into iron nanoparticles through carbonization heat treatment, the iron nanoparticles can etch carbon atoms in graphene so that holes are reserved in a graphene sheet layer, and porous graphene is formed after acid pickling. The prepared porous graphene is uniform in pore diameter, can be adjustedwithin the range of several nanometers to hundreds of nanometers according to needs, and is large in pore diameter distribution range. The method is simple in process, high in preparation efficiency,low in cost and suitable for large-scale industrial production.
Owner:SHANXI UNIV

Asymmetric cobaltocene cation derivative and preparation method thereof

The invention provides an asymmetric cobaltocene cation derivative and a preparation method thereof, and belongs to the technical field of organometallic chemistry. The asymmetric cobaltocene cation derivative contains cobaltocene cations, so that the good stability of the cobaltocene cations under strong acidic and strong alkaline conditions can be exerted, and meanwhile, the cobaltocene cations also have counter ion dependence and oxidation-reduction properties, the derivative can be applied to the fields of self-assembly, antibacterial materials, metal corrosion inhibition and fuel cell diaphragms; meanwhile, norbornene capable of realizing ring-opening metathesis polymerization or a ferrocene group capable of realizing self-assembly through subject-object and electrochemical regulation is introduced into the cobaltocene asymmetric derivative, so that a good basis is provided for subsequent ring-opening metathesis polymerization and self-assembly research of the cobaltocene asymmetric derivative; the application of the cobaltocene derivative system can be enriched.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Preparation method of polythioether corrosion inhibitor containing cobaltocene cation side group and used corrosion inhibitor system

The invention relates to a preparation method of a polythioether corrosion inhibitor containing a cobaltocene cation side group and a used corrosion inhibitor system. Through an ingenious structural design, sulfur atoms are introduced into a polymer main chain by utilizing a simple and convenient thiol-ene click polymerization reaction to obtain saturated polythioether of which the side chain contains sulfonate groups with different numbers; and the target polythioether corrosion inhibitor of which the side chain contains different numbers of cobaltocene onium ions is prepared through efficient azidation and copper-catalyzed azide-alkynyl click reaction. According to the polymer corrosion inhibitor, the interaction between the corrosion inhibitor and the metal surface can be further enhanced through the synergistic effect of sulfur atoms on a main chain, side group connecting groups of triazole and cobaltocene onium ions and the metal surface and the excellent film-forming property of the polymer, so that the excellent corrosion inhibition effect is achieved. The final corrosion inhibition experiment test shows that when the corrosion inhibitor is immersed in a 5% HCl corrosion inhibition medium for 6 hours at the temperature of 25 DEG C, the corrosion inhibition efficiency of the corrosion inhibitor with the concentration of 15 ppm on metal reaches up to 96%.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

A kind of preparation technology of cobalt dicene

ActiveCN105131047BWide range of sources and none of them are expensiveMild reaction conditionsMetallocenesDistillationCobaltocene
The invention provides a preparation technology of cobaltocene. The preparation technology comprises the following steps: (1) reacting cobalt dichloride with a metal compound containing alkyloxy in an oxygen-free first alcoholic solvent to obtain a cobalt compound containing alkyloxy; (2) reacting the alkyloxy-containing cobalt compound obtained in the step (1) with a cyclopentadiene monomer in a second alcoholic solvent to obtain a mixed solution containing cobaltocene, and carrying out distillation to remove the solvent to obtain a coarse product of cobaltocene; (3) dissolving the cobaltocene coarse product obtained in the step (2) into a non-proton solvent, filtering, adding an ether solvent into the condensed filtrate, and carrying out recrystallization to obtain cobaltocene solids. The raw materials used in the provided preparation technology all have a wide source and low price. The reagents, which need strict reaction conditions, such as metal sodium, amino sodium, and the like, are not used in the provided preparation technology. Moreover, the reaction conditions are mild, the operation is convenient and safe, the production cost is low, thus the preparation technology is very suitable for industrial production, and the cobaltocene product is high-purity solid crystals.
Owner:ZUNYI MEDICAL UNIVERSITY

Uniform and transparent conductive film with long-tube-bundle carbon nanotubes and preparation method thereof

The invention discloses a uniform and transparent conductive film with long-tube-bundle carbon nanotubes and a preparation method of the uniform and transparent conductive film, and belongs to the technical field of transparent conductive films. The method comprises the following steps: by adopting a floating catalytic chemical vapor deposition method, taking ethanol, toluene and acetonitrile as carbon sources, taking a sulfur-containing compound as a growth promoter and taking ferrocene, nickelocene and cobaltocene as catalysts, injecting a mixed solution of the carbon sources, the growth promoter and the catalysts into a high-temperature tubular furnace at a certain speed under the action of inert gas and hydrogen by utilizing a sample injection system, and performing high-temperature sintering to obtain the high-performance carbon-based composite material. And collecting the carbon nanotubes grown in the gas phase to a filter membrane to obtain the uniform and transparent conductive film with the long-tube-bundle carbon nanotubes. The carbon nanotube prepared by the method is long, and the number of contact junctions in the film is effectively reduced, so that the conductivity of the carbon nanotube film is remarkably improved.
Owner:DALIAN POLYTECHNIC UNIVERSITY

Betahistine synthesis method

The invention discloses a betahistine synthesis method, which comprises: carrying out a cyclization reaction on 3-methylaminopropionitrile, a solvent and a monovalent cobaltocene catalyst with acetylene in an anhydrous oxygen-free environment at a temperature of 85-95 DEG C under a certain reaction pressure to synthesize betahistine. The betahistine synthesis method provided by the invention has the advantages of simple steps, one-step synthesis of 3-methylaminopropionitrile and acetylene, low reaction temperature, good safety performance, high utilization rate of raw materials, reduction of the loss of the product in a multi-step reaction, and high product yield. Secondly, the reaction is an anhydrous reaction, so that the generation of a large amount of wastewater and alkali-containing hazardous wastes generated by taking 2vinylpyridine as a raw material can be avoided.
Owner:HEBI SAIKE CHEM ENG CO LTD

Cobaltocene cation monophosphine ligand and its synthesis and uses

The invention relates to a cobaltocene cationic phosphine ligand (the general formula is I)and its synthesis and the application in Suzuki reaction (preparation of biphenyl with bromobenzene and borophenylic acid ) in catalytic ionic liquid, R represents cyclohexyl, isopropyl or tert-butyl group. The complex generated with said compound and palladium bichloride can effectively catalyze Suzuki coupling reaction with molar concentration of 1.0%.
Owner:HUAZHONG NORMAL UNIV

A kind of carbon nanotube composite absorbing material and preparation method thereof

ActiveCN107032325BStrong environmental corrosion resistanceLight in massCarbon compoundsMagnetic/electric field screeningRare earthCarbon nanotube
The invention belongs to the technical field of microwave absorbing materials, and relates to a carbon-nano-tube composite microwave absorbing material and a preparation method thereof. According to the material, a catalyst is dissolved in a liquid carbon source containing an additive to prepare a precursor solution, then, a pressureless sintering method is adopted to prepare the composite microwave absorbing material of which matrixes are carbon nano tubes, iron particles and cobalt-nickel alloy particles are added in the inner walls of the carbon nano tubes, and rare-earth compounds are attached to the outer walls of the carbon nano tubes; the liquid carbon source is a 1,2-dichloroethane solution, the additive is lanthanum nitrate, and ethyl alcohol which promotes the dissolution of lanthanum nitrate is further added in the liquid carbon source; the volume ratio of the 1,2-dichloroethane solution to ethyl alcohol is 9:1, and the catalyst contains 33.93 wt.% of ferrocene, 33.19 wt.% of cobaltocene and 32.88 wt.% of nickelocene. The carbon-nano-tube composite microwave absorbing material has the advantages of being light in weight, wide in absorption frequency band, extremely improved in microwave absorbing performance, high in environmental corrosion resistance and wide in application range; carbon-nano-tube filler prepared by the preparation method is high in purity and few in impurity.
Owner:EAGLES MEN AERONAUTIC SCI & TECH GRP

Electrolyte capable of inhibiting shuttle effect of lithium-sulfur battery and preparation method and application of electrolyte

The invention relates to the technical field of lithium-sulfur batteries, and particularly discloses an electrolyte capable of inhibiting a shuttle effect of a lithium-sulfur battery and a preparation method and application of the electrolyte. A homogeneous catalyst is dissolved in the electrolyte, the homogeneous catalyst contains cyclopentadienyl, and the homogeneous catalyst comprises at least one of ruthenium dicyclopentadienyl, cobalt dicyclopentadienyl and chromium dicyclopentadienyl. According to the invention, the homogeneous catalyst containing cyclopentadienyl is dissolved in the electrolyte and shows better cycle performance and rate capability when being used as the electrolyte of the lithium-sulfur battery because the homogeneous catalyst with the characteristics can be ionized to form a negatively charged cyclopentadienyl ligand after being dissolved, pi electron-cation charge interaction exists between Li<+> in lithium polysulfide and the negatively charged cyclopentadienyl ligand, lithium polysulfide can be captured, meanwhile, the reaction is carried out on a homogeneous interface, so that the reaction is more efficient and rapid, the shuttle effect inhibition effect is finally achieved, and better cycle performance and rate performance are achieved.
Owner:UNIV OF JINAN
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