13 results about "Cuprous salt" patented technology

The invention provides a preparation method of a cyano chlorosilane compound, and the preparation method of the cyano chlorosilane compound comprises the following steps: reacting methyl dichlorosilane with a cyano-containing olefin compound under the action of a catalyst to obtain the cyano chlorosilane compound, the catalyst comprises a combination of cuprous salt, organic alkali and tetramethylethylenediamine. According to the method, methyl dichlorosilane and cyano-containing olefin are used as raw materials to react, and the cyano chlorosilane compound is prepared under the action of a specific catalyst; the preparation method is simple in reaction operation, the yield is 76% or above, the purity is 99.1% or above, and the preparation method is suitable for industrial production.

The present invention relates to a composite adsorbent for pressure swing adsorption separation of carbon monoxide with a core-shell structure, which uses microspheres with high specific heat capacity and non-porous structure as the core and zeolite exchanged with divalent copper loaded with cuprous salt as the shell. The composite adsorbent comprises the following raw materials in parts by mass: 5-10 parts of microspheres with high specific heat capacity and non-porous structure, 70-90 parts of copper-based adsorbent precursor, and 5-10 parts of binder. The copper-based adsorbent precursor is a mixture of cuprous salt and zeolite exchanged with divalent copper in a mass ratio of 0.5-0.7:1. By adding an inert core, the present invention improves the specific heat capacity of the adsorbent, can control the adverse temperature gradient generated during adsorption and desorption, reduces the temperature change during the adsorption and desorption process, and makes the pressure swing adsorption process easier to control; the binder is more firmly combined, improving the physical strength of the adsorbent, thereby extending the service life of the adsorbent.

The invention discloses a preparation method and application of a pydiflumetofen intermediate, and the method comprises the following step: in the presence of cuprous oxide or cuprous salt and acid, synthesizing 2, 4, 6-trichlorobenzene diazonium fluoroborate and isopropenyl acetate into the pydiflumetofen intermediate of formula I, according to the invention, 2, 4, 6-trichloroaniline which is cheap and easy to obtain is used as a raw material to improve a Meerwein arylation reaction method, and finally industrial cheap and mass production of the intermediate I is realized.

The invention relates to a cuprous salt antioxidant containing a phosphite structure and a preparation method and application thereof.The preparation method comprises the steps that firstly, diethyl malonate reacts in the presence of ammonia gas to obtain an intermediate A, then the intermediate A and 3-amino-2, 5-di-tert-butylphenol are subjected to condensation cyclization to obtain an intermediate B, finally, after the intermediate B and a phosphite derivative react, the cuprous salt antioxidant containing the phosphite structure is obtained, and the cuprous salt antioxidant containing the phosphite structure is obtained. And coordinating with cuprous salt to obtain a final product. The invention also provides a nylon composition containing the antioxidant. The antioxidant disclosed by the invention has the characteristics of high-efficiency oxidation resistance, hydrolysis resistance and good compatibility with nylon through the synergistic effect of a plurality of intramolecular stable mechanisms, and can be used for remarkably improving the thermal oxidation stability of a nylon material, inhibiting degradation in the processing and using processes and effectively keeping the mechanical properties, appearance and color of the material.

The application discloses a preparation process and application of superfine copper oxide powder, and the preparation process comprises the following steps: (1) mixing cuprous salt and hydrochloric acid to obtain a first solution; (2) atomizing the alkaline solution and the first solution respectively, then simultaneously feeding into a reactor, stirring at a certain temperature, and then separating to obtain a precipitate; and (3) washing, drying, grinding, calcining and cooling the precipitate to obtain the copper oxide powder. The copper oxide powder is generated by the atomization method, has a purity of 99.6%, no agglomeration phenomenon, and uniform particle size distribution.

The present invention discloses an environmentally friendly gold extraction agent and its preparation method and application, comprising the following steps: (1) selecting cyanate, humate, and cuprous salt as raw materials and thoroughly mixing them; (2) placing the mixed materials in a porcelain boat and roasting them in a muffle furnace; (3) after roasting, exposing the materials to air and naturally cooling them to room temperature; (4) after complete cooling, grinding the resultant into powder in a mortar to obtain the environmentally friendly gold extraction agent. The gold extraction agent synthesized by the present invention is low-toxic and environmentally friendly. No toxic gases or harmful waste residues are generated during the production process. The roasting time is short, which is conducive to energy conservation. The raw materials used are inexpensive, and the agent consumption is lower than that of sodium cyanide, which can improve the economic benefits of large-scale industrial production. In addition, the gold extraction agent can be applied to a variety of gold mines, and for some gold mines, its gold leaching rate is slightly higher than that of sodium cyanide.

The invention provides a preparation method of a 2-bromobenzofuran derivative and a precursor of the 2-bromobenzofuran derivative. The preparation method of the 2-bromobenzofuran derivative and the precursor thereof provided by the invention comprises the following steps: S1, converting a compound 1 into a compound 2 in the presence of PPh3 and CBr4; s2, converting the compound 2 into a compound 3 in the presence of an alkali reagent and cuprous salt; s3, in the presence of an ester-based reducing agent, converting the compound 3 into a compound 4; s4, converting the compound 4 into a compound 5 in the presence of a hydroxyl halogenating reagent; s5, converting the compound 5 into a compound 6 in the presence of a cyanation reagent; and S6, in the presence of thionyl chloride and R2OH, converting the compound 6 into a compound 7. The synthetic route provided by the invention needs 7 steps, but the reaction yield of each step is relatively high, so that the total yield can reach 25.8%.

This invention discloses a copper-based metal-organic framework material, its preparation method, and its applications. The chemical formula of the material is [Cu2(6-Qc)4]. n 6-Qc is 6-quinoline carboxylic acid; the central metal of the material is five-coordinate Cu. 2+ Two Cu 2+ The components are linked by four carboxyl groups to form a paddlewheel-shaped binuclear structural unit; the 6-Qc ligand connects adjacent binuclear structural units together through the nitrogen atom and carboxyl group on the quinoline ring, and finally stacks to form a three-dimensional porous framework; preparation method: cuprous salt, 6-quinoline carboxylic acid and triethylenediamine are added to DMF to dissolve, and then heated to react. During the reaction, solids precipitate from the clear solution. After cooling and filtration, the product is obtained; this copper-based metal-organic framework material has a dynamic gate opening effect. Under the same temperature conditions, it exhibits different gate opening pressures for ethane and ethylene, and the gate opening pressure of ethane is significantly lower than that of ethylene, thus enabling efficient separation of ethane and ethylene.

The present invention discloses a preparation method of heptafluoroisobutyronitrile. The preparation method includes: in an organic solvent, under the combined action of a catalyst, a ligand and a base, heptafluoro-2-halopropane reacts with a cyanation reagent to obtain heptafluoroisobutyronitrile; the catalyst is a copper salt and / or a cuprous salt, the ligand is an oxamide compound, and the base is an inorganic base and / or an organic base; the heptafluoro-2-halopropane is one of heptafluoro-2-chloropropane, heptafluoro-2-bromopropane or heptafluoro-2-iodopropane, and the cyanation reagent is selected from at least one of KCN, NaCN, CuCN or Zn(CN)2. The present invention has the advantages of fewer reaction steps, cheap and easily available catalyst, and simple reaction process, etc.

Provided are electrically conductive carbon black and a preparation method therefor, and a lithium battery. The preparation method comprises: mixing raw material carbon black and a halogenating reagent to perform a halogenation treatment, so as to obtain an electrically conductive carbon black precursor; mixing a carbon black alkynylation reagent and a cuprous salt to perform an activation treatment, so as to obtain an activated alkynylation reagent; and mixing the activated alkynylation reagent and the electrically conductive carbon black precursor to perform a carbon black alkynylation treatment, and subjecting the resulting product to a deprotection treatment, so as to obtain electrically conductive carbon black.

The invention discloses a preparation method of cuprous oxide, cuprous salt and a preparation method thereof, the preparation method of cuprous oxide comprises the following steps: alkali is added into an arsenic-containing copper solution for reaction, cuprous oxide is obtained after solid-liquid separation, the arsenic-containing copper solution meets the condition that 2cAs < 3 + > is greater than cCu < 2 + >, cAs < 3 + > is the molar concentration of trivalent arsenic in the arsenic-containing copper solution, and the cuprous salt is the molar concentration of trivalent arsenic in the arsenic-containing copper solution. CCu < 2 + > is the molar concentration of bivalent copper in the arsenic-containing copper solution. An alkaline reagent is added into an arsenic-containing copper solution with specific arsenic and copper contents to react to prepare a cuprous oxide raw material, and the cuprous oxide raw material is further converted into cuprous salt, so that not only can effective separation of arsenic and copper be realized, but also a high-purity cuprous salt product can be obtained. The method is simple in technological process and easy and convenient to operate and has good implementability and industrial application prospects, and the obtained cuprous salt product is excellent in quality and has high application value.

The present invention relates to a core-shell structured carbon monoxide adsorbent, which uses a microsphere with a high specific heat capacity and a non-porous structure as the core and a molecular sieve loaded with cuprous salt as the shell. The composite adsorbent comprises the following raw materials in parts by mass: 5-10 parts of microspheres with a high specific heat capacity and a non-porous structure, 70-90 parts of a molecular sieve loaded with cuprous salt, 5-10 parts of an adhesive, and 1-2 parts of a co-adhesive. The beneficial effects of the present invention are as follows: By using a microsphere with a high specific heat capacity and a non-porous structure as the inert core of the adsorbent, the specific heat capacity of the adsorbent can be increased, thereby controlling the adverse temperature gradient generated during adsorption and desorption. On the one hand, the dynamic adsorption capacity of the adsorbent is increased, and on the other hand, the mass transfer coefficient is improved, making the adsorbent of the present invention have excellent mass transfer performance, higher stability and physical strength, capable of operating stably under harsh environments such as high temperature and high pressure, and having a long service life.

The invention provides a synthesis method of a citral compound, which comprises the following steps: taking nerol or geraniol as a raw material, taking a complex formed by TEMPO, imidazole and cuprous salt as a catalyst, taking dichloromethane as a solvent and taking oxygen as an oxidant, and carrying out oxidation reaction under a homogeneous catalysis system to obtain single-configuration citral with high yield. The method has the advantages of high reaction activity, high selectivity, cheap and easily available initial raw materials, cleanness, environmental protection and very high industrial application value.