16 results about "Cobalt phthalocyanine" patented technology

The invention relates to the field of polymer functional membrane materials, and particularly provides a composite sulfonated polyarylene ether nitrile sulfone proton exchange membrane and a preparation method thereof. Sulfonated poly (arylene ether nitrile sulfone) is synthesized through nucleophilic substitution reaction, and the sulfonated poly (arylene ether nitrile sulfone) and sulfonated cobalt phthalocyanine are subjected to blending and casting to form a membrane, so that the provided composite sulfonated poly (arylene ether nitrile sulfone) proton exchange resin contains a sulfonic acid structural unit, a sulfone structural unit, a polar cyano group and a phthalocyanine structural unit; the problem that an existing proton exchange membrane is low in sulfonation degree and proton conductivity can be solved, and the proton exchange membrane has the advantages of being high in structural stability, good in mechanical property, excellent in thermal stability and high in safety. The introduction of sulfonated cobalt phthalocyanine can effectively improve the internal structure of the sulfonated polyarylene ether nitrile sulfone proton exchange membrane, promote the conduction rate of water molecules in the membrane, and further improve the proton conductivity of the sulfonated polyarylene ether nitrile sulfone proton exchange membrane. In addition, the manufacturing process is green and simple, the compounding cost is low, and the application prospect is very wide.

This invention discloses a method for preparing a supported low-carbon hydrocarbon deodorization catalyst. The method includes: (1) preparing a catalyst containing M... 2+ and M' 3+ (1) Add molecular sieve to the solution and stir evenly; (2) React the obtained suspension with a mixed solution of NaOH and Na2CO3 or a weak alkaline solution under stirring; (3) Obtain the composite carrier by drying and calcination; (4) Prepare a cobalt salt solution and transfer Co to the cobalt salt solution by ion exchange. 2+ (5) After filtration and drying, Co molecular sieve solid alkali is obtained; (6) Co molecular sieve solid alkali, ammonium phthalate sulfonate, urea, ammonium molybdate, and phthalic anhydride are added in proportion and ground evenly; (7) The obtained material is heated under an inert atmosphere to react and obtain the catalyst product. In the catalyst prepared by this invention, sulfonated cobalt phthalocyanine is combined with molecular sieve through chemical bonds, the active component has a stronger binding force and a longer service life.

The invention develops an axial weak coordination synthesis method for regulating and controlling a cobalt phthalocyanine molecular metal d band center based on a graphdiyne topological structure. The method is characterized in that a series of graphdiyne two-dimensional interfaces with different topological structures are obtained by regulating and controlling the arrangement and proportion of sp-and sp-hybridized carbon atoms, and the adsorption configuration of cobalt phthalocyanine molecules along the graphdiyne topological structure two-dimensional interfaces is regulated by utilizing the d-pi action between sp-carbon and a cobalt metal center. The weak coordination regulation effect of sp-carbon on the d band center of cobalt phthalocyanine metal is realized. In the process of preparing hydroxylamine from nitrate through electro-catalysis, the adsorption energy of hydroxylamine at the Co-N4 site is reduced through the axial weak coordination effect of sp-carbon; sp-carbon can be used as a transfer station for catalyzing nitrate to nitrite to assist the nitrite to be reduced into hydroxylamine at the cobalt phthalocyanine Co-N4 site, so that a full-chain series catalytic mechanism is formed.

The application belongs to the technical field of photocatalytic H2O2 production, and particularly relates to a kind of cobalt-nitrogen-sulfur co-doped porous carbon nitride nanosheet and its application in photocatalytic production of hydrogen peroxide. Cobalt sulfonated phthalocyanine and melamine are mixed uniformly in water, and then subjected to hydrothermal reaction. After the reaction is completed, the mixture is cooled, centrifuged and dried to obtain a light blue powder. The light blue powder is calcined in a tube furnace under a nitrogen atmosphere to obtain a dark green powder Co-N-S / CN. The method has low energy consumption, strong controllability, simple process, and simultaneously realizes element doping and defect modification. The prepared cobalt-nitrogen-sulfur co-doped porous carbon nitride nanosheet with nitrogen vacancies has high photogenerated carrier separation efficiency and two-step single-electron oxygen reduction selectivity, and exhibits good photocatalytic H2O2 production capacity under simulated sunlight. The H2O2 production rate of the cobalt-nitrogen-sulfur co-doped porous carbon nitride nanosheet with the optimal doping amount is increased by 9 times in the presence of a proton donor, 5-hydroxymethylfurfural.

The application provides a method for efficiently synthesizing formaldehyde by electrocatalysis of carbon monoxide, and the core is: first, a phthalocyanine cobalt molecular material is used as an electrocatalyst for selectively preparing formaldehyde, the material has a clear C1 selective formaldehyde generation path, and can essentially inhibit the undesired C-C coupling of intermediates; second, the reaction is carried out under high carbon monoxide pressure to enhance the competitive adsorption effect of carbon monoxide. The application proposes a carbon monoxide competitive adsorption strategy, which combines the intrinsic substituent regulation of phthalocyanine cobalt molecular materials and external carbon monoxide pressurization to inhibit the over-reduction of formaldehyde, detach the formaldehyde intermediate from the active site, and realize the selective electro-synthesis. The CoPc-OMe MDE optimized by the application realizes 98% CO-to-HCHO selectivity under 90 bar carbon monoxide, the peak Faraday efficiency is 72%, and the formaldehyde partial current density is more than 110 mA·cm ‑2 .

The application provides a preparation method of a high-spin-state cobalt monatomic catalyst and application of the high-spin-state cobalt monatomic catalyst in neutral electro-synthesis of hydrogen peroxide, and belongs to the technical field of electro-catalytic synthesis. A conductive carbon material dispersion liquid is mixed with a binuclear sulfonated cobalt phthalocyanine dispersion liquid, an adsorption reaction is carried out under magnetic stirring, and the obtained mixed liquid is subjected to suction filtration, washing and drying to obtain the high-spin-state cobalt monatomic catalyst, which has the advantages of simple steps and high repeatability. In the application, the binuclear sulfonated cobalt phthalocyanine is loaded on the conductive carbon material to realize construction of a high-spin-state cobalt center, so as to promote activation of O2 and improve reaction kinetics, and the application has excellent catalytic activity, hydrogen peroxide selectivity and stability in the neutral electro-synthesis of hydrogen peroxide. The application can also be used for synthesizing pure hydrogen peroxide solution with a concentration reaching the medical-grade disinfectant water standard, and the voltage of a reaction cell is lower than 2.2 V, so the application has great application potential of low energy consumption and direct synthesis.

The application discloses an amorphous polytetrafluoroethylene modified molecular catalyst and a preparation method and application thereof, belongs to the technical field of electrocatalysis, and is characterized in that carbon nanotubes and polytetrafluoroethylene are uniformly mixed and high-temperature annealing is performed to obtain a catalyst carrier, the catalyst carrier is mixed with cobalt phthalocyanine in N,N-dimethylformamide, centrifugation, washing and drying are performed to obtain a cobalt phthalocyanine catalyst; the polytetrafluoroethylene hydrophobic immobilized cobalt phthalocyanine can be applied to electrocatalysis of carbon dioxide into carbon monoxide. The application mainly controls the processing temperature, regulates the crystallinity of polytetrafluoroethylene, constructs a micro-hydrophobic environment for cobalt phthalocyanine, and improves the carbon dioxide concentration at a reaction interface, and the prepared catalyst exhibits excellent performance of catalyzing carbon dioxide into carbon monoxide under a large current density.

The invention relates to a method for synthesizing a compound with a rotation-resistant 1, 3-diene structure through a transition metal catalytic reduction coupling reaction, and discloses a method for synthesizing a compound with a rotation-resistant 1, 3-diene structure by taking 1-bromo-3, 4-dihydronaphthalene-2-formic acid phenyl ester and a derivative thereof as a substrate, ethylene glycol dimethyl ether nickel bromide (II) as a catalyst, activated zinc powder as a reducing agent, cobalt phthalocyanine (II) as a single electron transfer agent, (3aS, 3aS, 3aS, 3aS, 3aS, 3aS, 3aS, 3aS, 3aS, 3aS, 3aS, 3aS, 3aS, 3aS According to the method, 2, 2 '-[(phenyloxy) carbonyl]-1-(3, 4-dihydro)-dinaphthalene with a non-planar 1, 3-diene structure and enantioselectivity and the derivative thereof are obtained through reaction at the temperature of 30 DEG C by taking 2, 2'-[(phenyloxy) carbonyl]-1-(3, 4-dihydro)-dinaphthalene as a raw material, taking (3aR, 8aR)-2-(6-benzhydrylpyridine-2-yl)-8, 8a-dihydrotetrahydro-3aH-indeno [1, 2-d] oxazole as a chiral ligand, taking tetraethylammonium iodide as an additive and taking anhydrous toluene as a solvent. The method has the advantages of high efficiency, simplicity, wide substrate application range, convenience in operation and the like, and an efficient and novel preparation method is provided for the rotation-resistant 1, 3-diene compound.

This invention discloses a supported alkali-free desulfurization catalyst and its preparation method. The catalyst comprises, by weight, 30%-75% molecular sieve, 10-55% xMO▪yM'₂O₃, and 5%-25% cobalt phthalocyanine, wherein M represents elements of Group IIA and Group IIB, M' represents elements of Group IIIA and Group VIII, and x:y = 0.5~30. The supported alkali-free deodorization catalyst of this invention uses microporous or mesoporous molecular sieves with suitable pore structures as the basic support, and MO and M'₂O₃ as solid bases. Simultaneously, the active component, cobalt phthalocyanine, is synthesized and immobilized in the catalyst through in-situ. The catalyst of this invention exhibits a strong bond between the active component, cobalt phthalocyanine, and the molecular sieve support, resulting in minimal loss of the active component.

This invention relates to the field of water treatment technology, specifically to a non-aeration, low-current-density electrocatalytic oxidation water treatment method and electrocatalytic membrane, comprising the following steps: S1, placing a cobalt phthalocyanine-functionalized carbon nanotube electrocatalytic membrane into a membrane module as the cathode of the electrocatalytic reaction device; wherein, the cobalt phthalocyanine-functionalized carbon nanotube electrocatalytic membrane is obtained by the following preparation method: carbon nanotubes are acid-washed, functionalized and modified, then composited with cobalt phthalocyanine and calcined, then mixed with a polyvinyl alcohol solution and sprayed onto a base membrane material and crosslinked; S2, connecting the positive and negative electrodes of a power supply to the counter electrode and cathode respectively, and transporting the water sample to be treated into the electrocatalytic reaction device, controlling the current density ≥ 0.15 mA / cm². 2 No aeration is required during the treatment process. The electrocatalytic oxidation water treatment method of this invention is applicable to a wide range of water qualities and can stably treat novel antibiotic pollutants by generating hydroxyl radicals to achieve the oxidative degradation of pollutants.

The application discloses a kind of catalyst and preparation method and application of photocatalytic CO2 reduction product synthesis gas coupling PLA upgrading, belong to catalyst technical field.The preparation method of the present application includes the following steps: cobalt phthalocyanine is added with cadmium source precursor in sodium citrate dihydrate aqueous solution, then sequentially adding sulfur source precursor aqueous solution and ammonia, reaction is carried out at a certain temperature;After reaction, product is collected and purified, to obtain photocatalytic CO2 reduction product synthesis gas coupling PLA upgrading catalyst.The catalyst of the present application has the effect of reducing CO2 and H2O simultaneously and performing PLA pretreatment liquid oxidation, and the synthesis gas release efficiency, PA production rate and selectivity are high.The present application uses visible light as energy to drive the reaction, reduces energy consumption and environmental pollution;And energy fuel and high value-added chemicals can be produced synchronously, with great environmental and economic benefits, and the photocatalytic process does not produce harmful byproducts, in line with the principles of green chemistry.

The present application relates to the technical field of electrocatalyst, in particular to a method for preparing a cobalt phthalocyanine / gadolinium oxide composite electrocatalyst by rapid Joule heat and application thereof, and its technical points are as follows: gadolinium source and organic ligand are dispersed in an organic solvent, carbon black is added, and after ultrasonic mixing and stirring, the precursor is obtained by drying; the precursor is subjected to rapid Joule heat treatment, and gadolinium oxide nanocrystals are grown in situ on the carbon black carrier to obtain a Gd2O3 / CB composite material; phthalocyanine cobalt and the Gd2O3 / CB composite material are subjected to liquid phase immersion treatment in a mixed solvent, so that the phthalocyanine cobalt molecules are anchored on the composite substrate, and after filtration and drying, the CoPc@Gd2O3 / CB catalyst is obtained; by constructing a strong electronic coupling composite structure of CoPc and Gd2O3 / CB in situ, the electronic transmission efficiency is significantly improved, the molecular aggregation is inhibited, and the COOH generation energy barrier is reduced, so that high current density and high CO Faraday efficiency are realized.

The invention particularly relates to a preparation method of a cobalt-based molecular catalyst and application of the cobalt-based molecular catalyst in electrocatalytic preparation of hydrogen peroxide. The preparation method of the cobalt-based molecular catalyst comprises the following steps: mixing boron nitride and cobalt phthalocyanine in acetonitrile, carrying out ultrasonic treatment, stirring, standing, calcining the sediment, and grinding to obtain the CBN catalyst. According to the CBN catalyst, when the ratio of m (BN) to m (CoPc) is 6: 1, the hydrogen peroxide production effect of CBN is the best, the selectivity of two-electron oxygen reduction is as high as 97% only in ambient air under the voltage of-0.3 V vs Ag / AgCl, and the yield of hydrogen peroxide is 0.847 mmol / L / cm < 2 >. A novel catalyst material is provided for generating hydrogen peroxide through electro-catalysis of oxygen.

The application discloses a kind of high hydrophobicity molecular catalyst and its preparation method and application, belong to electrocatalysis technical field, first hydrophobic agent polytetrafluoroethylene is uniformly mixed with carbon nanotube by equal volume impregnation method, drying, the obtained catalyst carrier is dispersed in N,N-dimethylformamide with molecular catalyst phthalocyanine cobalt, ultrasonic loading, centrifugal, washing, drying phthalocyanine cobalt catalyst are obtained;The polytetrafluoroethylene hydrophobic immobilized phthalocyanine cobalt can be applied in electrocatalysis carbon dioxide preparation carbon monoxide.This application mainly through hydrophobic modification catalyst carrier, for phthalocyanine cobalt constructs microcosmic hydrophobic environment and promotes solid-liquid-gas three-phase contact interface formation, the prepared catalyst shows excellent catalytic carbon dioxide conversion for carbon monoxide performance under large current density.

The invention belongs to the technical field of electro-catalysis, and relates to an MOF derivative catalyst for preparing methanol through hydrogenation of carbon dioxide and a preparation method of the MOF derivative catalyst. In order to solve the problems that an existing cobalt phthalocyanine catalyst is prone to aggregation, CO by-products poison active sites and the like, Zr-BTB MOF serves as a framework, a precursor is prepared through a solvothermal method, cobalt phthalocyanine and a heme unit are loaded in sequence, and then heat treatment activation is conducted under the protective atmosphere to prepare the series catalyst. In the catalyst, heme promotes CO2 to be converted into CO, cobalt phthalocyanine promotes CO to be hydrogenated to generate methanol, heme and cobalt phthalocyanine are spatially separated in MOF channels but are adjacently distributed, and efficient tandem catalysis is achieved. The Zr < 4 + > node of the Zr-BTB MOF can activate CO2, the pore structure of the Zr-BTB MOF inhibits the aggregation of active components, and the stability is enhanced. The catalyst can improve CO2 conversion rate, methanol selectivity and reaction efficiency, and is suitable for resource utilization of carbon dioxide.

The application belongs to the technical field of electrocatalytic synthesis and nanomaterials, and particularly relates to a catalyst for preparing glycolic acid by selective oxidation of ethylene glycol and a preparation method thereof.The catalyst has a multi-stage composite structure: taking a nickel-based metal organic framework as a precursor, high-temperature thermal reduction and carbonization are performed to reconstruct a carbon nanotube conductive substrate loaded with nickel nanoparticle tips; on this basis, cobalt phthalocyanine molecules with clear active centers are loaded by a non-covalent bonding mode. By regulating the substituent structure around the cobalt phthalocyanine molecules, the selectivity of the catalyst to the ethylene glycol oxidation path can be finely adjusted, and efficient directional conversion of the glycolic acid product can be realized. The catalyst completely uses non-noble metals, has the advantages of high activity, excellent selectivity, good stability and low cost; the preparation process is simple and controllable, and has good reproducibility, thereby providing an efficient and reliable catalyst solution for green electrocatalytic value-added conversion of ethylene glycol.