198results about How to "Meet the requirements of industrialization" patented technology

The invention relates to a modified loading nano composite photocatalyst which takes titanium dioxide as main part and adopts new reaction technique to degraded the organic industrial wastewater in a water processing system (see attached drawing 1 in Instruction). The main point on preparing the catalyst lies in that titanium dioxide active compounds loaded on different carriers are employed to prepare a loading photocatalyst with grain diameter of 5-40nm; meanwhile, different elements are mixed into the loading photocatalyst to reduce the composition between photoproduciton electron and cavity, which enables the catalyst to move the light absorbing wavelength thereof towards the visible regions, thus effectively improving the degradation rate of organic pollutants as a new environmental-friendly catalyst. As to the new technique of processing the organic industrial wastewater, the invention overcomes the defects that the present photocatalysts are only used for degrading the organic industrial wastewater with low concentration. The catalyst being irradiated respectively or simultaneously under sunbeam and ultraviolet light can decrease COD values of high-concentration organic industrial wastewater from 10000-40000mg / L to less than 100mg / L in short time, thus meeting the national emission standard.

The invention relates to a polypeptide synthesis field in solid phase, and particularly relates to a method for synthesizing lixisenatide. The method uses amino resin as a solid phase carrier, comprising: subsequently gradually amino acids by solid phase peptide connecting method of Fmoc protection strategy after coupling Fmoc-Lys(Boc)-OH on the resin, to obtain complete protection peptide resin, and then cutting the peptide resin by a lysate, settling the peptide resin in ether, centrifugating the peptide resin and drying the peptide resin to obtain the crude product of lixisenatide, purifying the crude product by a reversed phase HPLC, and then salinizing the purified crude product to obtain lixisenatide. The method has advantages of simple operation and good yield, and satisfies the industrialization requirement.

The invention relates to a solid solution catalyst with simple substances nickel and cobalt loaded surface and for photocatalytic decomposition of water to produce hydrogen, and a preparation method thereof, and belongs to the technical field of photocatalysts. The preparation method of the catalyst for high-efficiency photocatalytic decomposition of water to produce hydrogen comprises the following steps: dissolving copper acetate and zinc acetate in deionized water, adding sodium sulfide to form a solid solution precursor, adding the obtained precursor to a reaction kettle, reacting at a certain temperature for a period of time, washing the obtained product, and drying to obtain a product zinc cadmium sulfide; and loading metals nickel and cobalt on the surface of the zinc cadmium sulfide. The catalyst improves the reaction rate of hydrogen production through photocatalytic decomposition of water to 211417[mu]mol h<-1>g<-1> from 78130[mu]mol h<-1>g<-1> of pure zinc cadmium sulfide, and improves the performances above 2 times. The catalyst has industrial application in energy crisis solution, and is a new technical means for producing environmentally-friendly novel energy.

The invention provides a low overpotential electrocatalyst for producing hydrogen by efficient water splitting and a preparation method of the electrocatalyst, and belongs to the technical field of catalyst preparation. The low overpotential electrocatalyst is prepared by in-situ growth of Co9Se8 on foamed nickel. The low overpotential electrocatalyst is prepared by one of cobalt nitrate hexahydrate, cobalt chloride, cobalt acetate or cobalt sulfate and one of sodium selenite pentahydrate, potassium selenite or seleninic acid in an organic amine environment in which the foamed nickel serves as a catalyst. The foamed nickel can serve as both a carrier and the catalyst of a synthetic reaction. The overpotential of the electrocatalyst is only -284mV when the electric current density is 80 mA / cm<-2> and is increased by more than 46.5% relative to that of pure foamed nickel with the overpotential of -530 mV when the electric current density is 80 mA / cm<-2>, and the electrocatalyst is a relatively low overpotential electrocatalyst in non noble metal electrocatalysts. The electrocatalyst is one of advanced technical means for the sustainable production of hydrogen energy, has good industrial application prospects and can be used to relieve an increasingly intense global energy supply pattern at present.

The invention relates to a method for preparing a CuInS2 hollow solar absorbing material. According to the method, an indium source, a sulfur source and the like are taken as precursors, cuprous oxide with a specific morphology is taken as a self-sacrifice template and a copper source, and a CuInS2 hollow nanomaterial can be prepared through selecting appropriate solvents and surfactants and controlling a certain reacting temperature and reacting time. Compared with the prior art, the invention has the advantages that: the method is simple in operating steps, rapid in reaction, and low in cost and can meet the industrial requirements, and the prepared CuInS2 hollow nanomaterial can have good application on photocatalytic and solar photovoltaic cells.

The invention relates to a method of preparing a polyaniline / silver nanometer material by a cladding manner. The method includes (1) a step of preparing silver nanowires by adopting a polyol manner, and (2) a step of preparing the polyaniline / silver nano-material by an in-situ cladding manner, namely a step of mixing the silver nanowires with absolute alcohol, stirring, adding the mixture into a reactor, adding aniline, sodium dodecylbenzenesulfonate and hydrochloric acid, stirring at room temperature for 30-60 min, adding ammonium persulfate, stirring for 60-240 min, and subjecting a product to separation and purification to obtain the polyaniline / silver nanometer composite material. The doped polyaniline / silver nanometer composite material is prepared through the cladding manner by adopting a step-by-step reaction manner, thus improving electrical conductivity of the material and facilitating control of the cladding amount of the silver nanowires and morphology of the composite material. In addition, doped inorganic and organic acids facilitate improvement of water solubility and electrical conductivity of the composite material. The method allows the product to be good in electrical conductivity and water solubility and to meet industrialization requirements of the material and is beneficial to industrialization and application of the material.

The invention belongs to the technical field of pharmaceutical chemistry, and discloses a purification method for atosiban. The purification method comprises the following steps of: treating atosiban coarse peptide solution by taking trivalent iron ion salt as a reducing agent; removing impurities which are not fully oxidized in the atosiban coarse peptide solution; purifying the atosiban coarse peptide solution by using high performance liquid chromatography; and converting atosiban perchlorate prepared through purification to prepare an atosiban pure product by using the high performance liquid chromatography. The purification method provided by the invention is easy and feasible to operate; the prepared atosiban pure peptide product has high purity; meanwhile, the yield of the atosiban pure peptide product prepared by the method is high; and over 1,000 g of the atosiban pure peptide product can be obtained in one batch and is sufficient to meet the industrial requirements.

The invention provides a method for producing 2-butenoic acid, which comprises the following steps: preparing mixed feed liquid from 2-butenoic aldehyde, normal hexane and water in a weight ratio of 1:1:0.05-0.08; mounting an ejector pump on an oxidation reaction kettle for spraying the mixed feed liquid into the oxidation reaction kettle; introducing oxygen into the oxidation reaction kettle to perform a reaction under a condition that the reaction pressure in the oxidation reaction kettle is 0.1 to 0.6MPa and a condition that the temperature is 25 to 35 DEG C to obtain oxidation reaction solution; distilling the oxidation reaction, distilling the remaining 2-butenoic aldehyde under a reduced pressure, recovering the 2-butenoic aldehyde, distilling the remaining normal hexane at normal pressure and obtaining filtrate; and cooling the filtrate to -5 DEG C to 5 DEG C, precipitating, crystallizing and filtering and drying the crystals to obtain the 2-butenoic acid product. The production method has the advantages that: the reaction speed is high; the product yield is high; the energy consumption is small; and the quality of the product obtained is high.

The invention belongs to the technical field of chemical separation and relates to a preparation method of a wetting selective oil-water separation membrane separated according to requirements. The preparation method comprises the following steps: firstly, mixing an aluminate precursor and a pH regulator to form a solution, adding 8 to 12 ml of aluminum ion pH regulator mixed solution according toa porous basement membrane per square centimeter, carrying out hydrothermal reaction at the temperature of 150 to 200 DEG C for 12 to 24 hours, taking out a reactant, washing and carrying out vacuumdrying to obtain a precursor separation membrane with a hierarchical structure; carrying out high-temperature calcining to obtain a superhydrophilic / underwater super-oleophobic separation membrane with a hierarchical structure; then adding the superhydrophilic / underwater super-oleophobic separation membrane into a sodium laurate solution and carrying out modification reaction at the temperature of40 to 70 DEG C for 5 to 9 hours, and carrying out high-temperature calcining to obtain the superhydrophilic / underwater super-oleophobic separation membrane with the hierarchical structure; and carrying out repeated calcining and surface modification to obtain the wetting selective membrane according to the requirements. The preparation method disclosed by the invention has the advantages of simple process and low cost, solves the problems of poor selectivity, high possibility of pollution, low separation efficiency and the like of a traditional oil-water separation membrane are solved by utilizing surface superhydrophilic and super-hydrophobic characteristics under different conditions, and has a great application value in the fields of environment friendliness, chemical engineering and the like.