38 results about "Cobaltocene" patented technology

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.

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.

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.

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.

The invention relates to a monosubstituted obaltocene cationic derivative and a high-efficiency preparation method. The preparation process is completed in one step by a one-pot method; an expensive catalyst is not needed; the operation is simple, easy and feasible; the reaction condition is mild; the reaction efficiency is high; the column separation is not needed; the post treatment is simple, convenient and quick, and the target monosubstituted obaltocene cationic derivative can be applied to the fields of novel surfactants, novel polyelectrolyte materials, antibacterial materials and fuel-cell diaphragms, and the like.

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.

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.

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.

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.

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.

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.

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.

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%.

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.

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.