45 results about "Isoamyl nitrite" patented technology

The invention relates to a method for continuously synthesizing arylboronic acid ester by utilizing a microreactor, which belongs to the technical field of green organic synthesis application. The method comprises the following steps of: preheating substituted arylamine, tert-butyl nitrite, bisdiborane in a continuous-flow micro-channel reactor system by using substituted arylamine, acetonitrile, tert-butyl nitrite and bisdiborane as starting materials; and mixing the substituted arylamine with the bisdiborane and then reacting the obtained mixture with the tert-butyl nitrite, wherein in the reaction, the molar ratio of the substituted arylamine to the bisdiborane is (1:0.5)-(1:1.25), the molar ratio of the substituted arylamine to isoamyl nitrite is (1:1.1)-(1:1.5), the reaction temperature is 60 DEG C-120 DEG C, the reaction time is 50 seconds-3600 seconds, and the effective conversion ratio of the substituted arylamine is 50%-90%. The continuous-flow microreactor, which is capable of strengthening the mixing effect, the mass transfer effect and the heat transfer effect, is especially suitable for carrying out homogeneous reaction of the method. Moreover, the method has the characteristics of stable temperature control, safe process and less waste material.

The invention discloses a method for preparing functionalized graphene through ball milling. According to the method, graphite, organic molecules containing anilino groups and isoamyl nitrite are used as raw materials and subjected to ball milling so as to prepare graphene covalently modified by organic molecules. The method for preparing the functionalized graphene in the invention has the advantages that the functionalized graphene is prepared from graphite through one-step reaction, so preparation process is simple; different organic molecules containing anilino groups can be used so as to realize surface functionalization of graphene; different organic molecules and graphene are connected via covalent bonds, so graphene has good dispersibility in different systems (water, organic solvents and matrix materials); and the method is simple to operate, low in cost, high in efficiency, free of pollution and capable of realizing large-scale preparation. The functionalized graphene prepared by using the one-step method has good dispersibility, which is beneficial for processing of the functionalized graphene in a solvent, and has wide application prospects in the fields of optoelectronic devices, new energy sources and new materials.

The invention discloses a preparation method of an intermediate of iodosulfuron-methyl sodium. The intermediate is obtained by performing a reaction on 6-aminosaccharin and potassium iodide in the presence of alkyl nitrite and acetic acid in one step, wherein a molar ratio of the potassium iodide to the 6-aminosaccharin is 1:1 to 1.2:1; a molar ratio of the alkyl nitrite to the 6-aminosaccharin is0.95:1 to 1:1; the alkyl nitrite is ethyl nitrite, isopropyl nitrite, n-butyl nitrite or isoamyl nitrite; and a molar ratio of the acetic acid to the 6-aminosaccharin is 1:1 to 1.2:1. According to the method provided by the invention, the alkyl nitrite is adopted for diazotization, the potassium iodide is added at the same time, so that decomposition and hydrolysis of a diazonium salt can be avoided, and the reaction yield is greatly improved; and the method does not require a large amount of water as a solvent and only adopts a small amount of water to wash an organic layer in the post-treatment, and therefore wastewater produced by adopting the method provided by the invention does not exceed 2 times the weight of the target product.

Alcohol group biodiesel comprises 2-5 parts of denatured alcohol, 2-5 parts of polyatomic alcohol, 8-15 parts of bio-oil, 50-65 parts of primary oil, 15-20 parts of kerosene, 1-4 parts of cetane number improver, 0.1-0.3 part of stabilizer and 0.7-0.9 part of powerful agent; the denatured alcohol is a mixed reactant of methyl alcohol, acetone, dimethyl ether, sodium chloride, ferrocene, polyisobutene and polyethylene-vinyl acetate; the stabilizer is a mixture of oleic acid, cyclic-propionic acid and diethylamine or propylamine; the powerful agent is a mixture of isoamyl nitrite and tetranitromethane. The alcohol group biodiesel is used as diesel vehicle fuel, an engine does not need to be modified, the power and the fuel consumption are equal to those of common diesel, and the alcohol group biodiesel and the common diesel are soluble at any ratio; harmful gas emission in automobile tail gas can be effectively reduced; composition is simple and raw materials are wide; the storage time is long, and the problems of layering and going bad are avoided; the alcohol group biodiesel is worth being produced in mass, popularized and used.

The invention discloses a preparation method of polyaniline-graphene hollow microspheres. Firstly, isoamyl nitrite and sulfanilic acid are utilized to sulfonate graphene, the obtained sulfonated graphene is used as a Pickering emulsifier, water dispersion liquid of the obtained sulfonated graphene serves as a water phase, and toluene or an aniline monomer serves as an oil phase to perform emulsification, an oil-in-water (O / W) emulsion is obtained, then an oxidizing agent ammonium persulfate is added to trigger aniline polymerization, and the polyaniline-graphene hollow microspheres can be obtained after the oil phase toluene is removed. The polyaniline-graphene hollow microspheres are prepared by adopting a Pickering emulsion method. The preparation method is simple and efficient, and the prepared polyaniline-graphene hollow microsphere material with a three-dimensional hollow structure has larger specific surface area and a shorter ion and electron transmission path compared with a polyaniline-graphene composite material with a two-dimensional structure and has a greater potential application value on the aspects of catalysis, micro-reactors, sensing, energy storage materials and the like.