83results about How to "Reaction raw materials are cheap" patented technology

The preparation process of mesoporous spherical nano SiO2 particle includes mixing deionized water, CTAB, tetraethyl metasilicate, water solution or ammonia water solution of sodium hydroxide and alcohol solvent in certain proportion; heating reaction of the mixture inside PTFE reactor with protecting stainless steel casing and set in stove with blower; filtering of the reacted solution; washing and high temperature roasting to obtain mesoporous spherical nano SiO2 particle with homogeneous size. The process of the present invention is simple, low in cost and short in production period, and the prepared mesoporous spherical nano SiO2 particle is homogeneous in size, regular in appearance and ordered in pore channel.

The preparation process of nanotube oriented nano zinc oxide material includes dissolving zinc salt, ammonia water, thiourea and ammonium salt in certain proportion in deionized water to prepare film growing reaction solution; and soaking processed substrate inside the reaction solution, ultrasonic treatment for 35-40 min, heating to 94-97 deg.c to reaction for 45-60 min to obtain compact nanotube oriented nano zinc oxide material. The said process of the present invention is simple, low in cost and short in production period, and the prepared nano zinc oxide material consists of oriented nanotube of average diameter of 500 nm, thickness of 100 nm and length of 6 micron.

The invention discloses a method for preparing a cadmium sulfide film by using a chemical bath deposition method. The method comprises the steps: cleaning a substrate; mounting the substrate, forming a reactor by the substrate and a fixture; preparing a solution, mixing cadmium salt, ammonia water, buffering agents, thiourea and deionized water according to a certain ratio to form a reaction solution, and then adding the solution into the reactor; reacting and depositing the reaction solution, placing the reactor with the reaction solution in a constant temperature bath container, heating the reaction solution to 50 DEG C to 90 DEG C, exerting 20 to 50 KHz ultrasonic waves to assist the depositing simultaneously, or adding a water pump so that the reaction solution circulates constantly in the reactor through a water inlet and a water outlet of the fixture and the total reaction time is about 5 minutes to 60 minutes; and subjecting the reaction solution to further treatment, taking down the substrate deposited with the cadmium sulfide film, and cleaning, drying or stoving the substrate. According to the method for preparing the cadmium sulfide film by the chemical bath deposition method, reaction materials are saved, only single side coating happens on the substrate, the attractiveness is improved, the deposited cadmium sulfide film is continuous, uniform and compact, and the film-forming quality is improved.

The invention discloses a preparation method of wine aroma type Maillard spice. According to the preparation method, mild-flavor, Maotai-flavor or Luzhou-flavor type Baijiu is used as a Maillard reaction precursor and an extracting solvent and organic fusion of wine aroma and sweet aroma is realized; a three-grade extraction technology of a water phase, a water-alcohol phase and a propylene glycolphase is selected and sweet substances in phlomis betonicoides are extracted with maximum efficiency; components, which are not suitable for cigarette smoking, in the phlomis betonicoides are removedthrough a non-starch polysaccharide enzyme, so that the effects of increasing the aroma and coordinating the mouthfeel are realized; a molecular distillation means is utilized and each grade of aroma-causing component of a Maillard reactant is screened again and compounded, so that the defects that the pertinence is not strong and characteristics are not prominent, caused by one-pot boiling of Maillard reaction, are eliminated. The invention further disclosed application of the wine aroma type Maillard spice in the cigarettes, so that the cigarettes have a more obvious sweet and smooth style.

The invention relates to preparation of 2-(2-haloethoxy) acetic acid and esters thereof. The preparation comprises the following steps of: undergoing an oxidation reaction on 2-(2-haloethoxy) ethanol serving as a raw material under the actions of a catalyst and an oxidant at the temperature of 10-50 DEG C to obtain 2-(2-haloethoxy) acetic acid; and undergoing an esterification reaction on the 2-(2-haloethoxy) acetic acid and corresponding alcohols of a target ester under the action of a catalyst to obtain 2-(2-haloethoxy) acetic ester. According to the preparation method disclosed by the invention, a two-step reaction can be undergone with a one-pot process, so that easy operation is achieved. The preparation process disclosed by the invention is safe and environmentally-friendly, has high yield, and is very suitable for industrial production.

A preparation method for a strong uv-absorption nm ZnO film is to dissolve ZNH and six sub-methyl tetramine in the mole concentration proportion of 1:1 in methyl alcohol solution to prepare a film growing reaction solution, then a preprocessed baseplate is immersed into a prepared film grown reaction solution for 30-60min again to rise to 95-100deg.C reacted for 2-3h to get a densed ZnO film.

The invention relates to the technical field of hard alloys, and specifically discloses composite powder with a heterogeneous core-shell structure and a preparation method thereof. The composite powder with the heterogeneous core-shell structure takes WC as an inner core, takes an inhibitor as an inner shell layer, and takes binding-phase metal as an outer shell layer, wherein the inhibitor is a transition metal carbide, the binding-phase metal is an alloy mixture of Co, Ni and Fe; mass fraction, in the composite powder, of the inhibitor is 1.2wt.%-4wt.%; mass fraction, in the composite powder, of the binding-phase metal is 3wt.%-15wt.%; and a mass ratio of Co to Ni to Fe in the alloy mixture is (1-2) to (1-2) to (1-2). The composite powder with the heterogeneous core-shell structure provided by the invention is uniform in texture, is stable in performance, and is easily regulated in component; and process parameters can be regulated, the powder inner-core average particle diameter, inner and outer shell thickness as well as components and the like are regulated, so that foundation is laid for preparing high-performance hard alloys of different grain sizes.

The invention discloses a method for producing a chlorfenapyr raw material pesticide. The method comprises the following steps of: adding chlorobenzol glycine and trifluoroacetic acid which serve as raw materials and 4-dimethylamino pyridine serving as a catalyst into an acetonitrile solvent, stirring uniformly, and dripping a phosphorus trichloride solution to perform acylation reaction; after the reaction is finished, adding 2-chloro acrylonitrile serving as a raw material and dimethyl formamide (DMF) serving as a cosolvent, and stirring for dissolving; dripping a triethylamine solution to perform cyclization reaction, and dripping bromine into the reaction solution; after bromination reaction is finished, and removing the solvent and the cosolvent; adding the residual substance into an alcohol solvent for dissolving, and cooling to precipitate an intermediate; adding the intermediate and chloromethyl ethyl ether into ethyl acetate serving as a solvent, stirring for dissolving, dripping triethylamine to perform condensation reaction, removing the solvent and the ethyl acetate, and hydrolyzing to obtain the chlorfenapyr raw material pesticide. In the method, the acylation reaction and the cyclization reaction are completed in one step, so a process is simplified, energy consumption is reduced, a production process is energy-saving and environment-friendly, and the purity and yield of products are improved.

The invention discloses a preparation method of an improved cigarette feint spice. The preparation method comprises the following steps of selecting natural herb raw materials of liquorice root, fig receptacle and dried cumquat, cleaning, slicing, adding feint with mass equal to 5 to 10 times of the mass of the natural herb raw materials to soak, and adding a mixed enzyme solution with mass equalto 0.1 to 0.5% of the mass of natural herb raw materials, so as to obtain a feint extract; mixing the feint extract, reducing sugar and amino acid according to a mass ratio of (10 to 15):(2 to 4):(1 to 2), placing into a reaction kettle, adding a small amount of ammonia water to adjust the pH (potential of hydrogen) value to 7 to 9, heating at the temperature of 95 DEG C, and refluxing for 2 to 6h, so as to obtain a feint reaction matter; performing ternary molecule distillation on the feint reaction matter, so as to obtain four molecule distillation components; mixing the secondary light component and the ternary light component according to a ratio of 1:(1 to 5), so as to obtain the feint spice. The invention also discloses the application of the feint spice in cigarette. The preparationmethod has the advantage that the preparation defect of 'one-pot boiling' of the spice in the traditional Maillard reaction is overcome, so that the cigarette is sweeter and moister.

The invention aims to provide a preparation method for a Mn3o4 hollow micronano cubic block. According to the method, the Mn3o4 hollow micronano cubic block can be synthesized by using a cheap raw material to prepare a metal-organic framework (MOF) template through simple liquid phase reaction and then performing alkali processing on the MOF template. Manganese chloride, an alcohol solution of methylamine and anhydrous formic acid are used as reactants, PVP-K30 is used as a surfactant, the MOF template is synthesized under a room template by liquid phase reaction, and the MOF template is processed by an alkali liquid under a hydrothermal condition to prepare the Mn3o4 hollow micronano cubic block. Liquid phase chemical reaction is taken as a basis, the MOF template is synthesized by using the cheap and available raw material, and the Mn3o4 hollow micronano cubic block is prepared by simple hydrothermal reaction. The preparation method is simple, mass production is easy to achieve, so that the preparation method has very wide application prospect.

The invention relates to a preparation method of a metallic organic macrocyclic crystalline-state material for splitting chiral amine. The method firstly comprises the following steps: firstly synthesizing a chiral ligand (1R,2R)-H2L, wherein the chiral ligand (1R,2R)-H2L is (1R,2R)-N-2-hydroxyl-3-tertbutyl-5-(4-pyridine)benzylene-N'-2-hydroxyl-3-tertbutyl-5-(4-pyridine)benzyl-cyclohexanediamine; then preparing the metallic organic macrocyclic crystalline-state material for splitting chiral amine by adopting a solvothermal method. Compared with the prior art, by adopting the solvothermal method, the preparation method is low in reaction temperature, short in reaction time, low-cost in reaction raw materials, and easy to prepare, as well as simple for synthesis operations, without the need of complicated aftertreatment, the prepared chiral metallic organic macrocyclic crystalline-state material is very stable in structure, strong in selective adsorption capability, and high in splitting efficiency.

The invention provides a synthesis method of a 2-aminoindane derivative. According to the method, 5,6disubstituted 1-indanone is used as a staring raw material; bromination reaction is firstly performed; then, Gabriel reaction is performed; next, hydrazine hydrate is added; hydrolysis reaction is performed, and meanwhile, hydrazone is generated; finally, strong alkali is added into a high-boiling-point solvent to perform heating hydrolysis; the target product of the 2-aminoindane derivative is prepared. The invention also provides the 2-aminoindane derivative prepared by the synthesis method. Compared with the synthesis method of the 2-aminoindane derivative in the prior art, the synthesis method provided by the invention has the advantages that the reaction raw materials are cheap; the reaction condition is mild; the reaction steps are simple; the operation is easy; the yield of the obtained product is higher; the synthesis method is suitable for industrial production. Therefore good application prospects and market potentials are realized.

The invention relates to diphenylalkyl halide or diphenyl carboxylic acid and a simple and convenient synthesis method thereof. The method comprises the following steps of: after a bromobenzene derivative and magnesium form a Grignard reagent, reacting the Grignard reagent and lactone, and opening loop to obtain 1,1-diphenyl-diol; reacting the 1,1-diphenyl-diol under the condition of a mixed solvent of an organic solvent and an acid to form diphenylenol; reacting the diphenylenol, a halogen or a halide and triphenylphosphine in the organic solvent to form diphenylalkenyl halogen; and reactingthe diphenylalkenyl halogen and hydrogen to form diphenylalkyl halide, or reacting the diphenylenol and hydrogen to form diphenyl alcohol; and reacting the diphenyl alcohol and CrO3 under the action of the organic solvent and the acid to form diphenyl carboxylic acid. The reaction raw materials are cheap; the reaction conditions are mild; and substitutional diphenylalkyl halide or diphenyl carboxylic acid compounds with different benzene rings can be synthesized.

The invention provides a preparation method of chlorophosphazene. The preparation method comprises the following steps: introducing ammonia gas to react with hydrogen chloride to generate ammonium chloride, utilizing the ammonium chloride to substitute partial reaction raw material to react, and obtaining a phosphazene compound. According to the preparation method, the ammonia gas is introduced to react with the hydrogen chloride to generate the ammonium chloride which is used as a raw material, so that the complex treatment for absorbing the tail gas hydrogen chloride generated in the reaction can be avoided, and the reaction after-treatment procedures are simplified; the particle size of the ammonium chloride produced by this way is smaller, the reaction can be performed successfully, and not only is the yield high, but also the crushing step is omitted, so that the reaction treatment is simple, the safety is high, the cost is relatively low, and the yield is high.

The invention provides a dust removal, desulfurization and denitrification integrated tower which sequentially comprises a water film dust removing layer, a denitration layer, a desulfuration layer and a steam-water separation layer from bottom to top; the positions of the denitration layer and the desulfuration layer can be exchanged. The invention also provides a dust removal, desulfurization and denitrification integrated system which comprises an air inlet device, a purification device and a recovery device, wherein the air inlet device is connected with the purification device; the purification device is connected with the recovery device. After the dust removal, desulfurization and denitrification integrated tower and the dust removal, desulfurization and denitrification integrated system are used for treating waste material, the pollution is reduced, the reaction raw material is saved, the device is easy to clean, the service life is prolonged, and the production cost is lowered.

A preparation method for three-D orientation zincite film is first of all to dissolve zincic salt, ammonia water, and amine salt in deionized water in a certain proportion to form film growing reaction liquid, then, to immerse the processed baseplate in a prepared film growing reaction liquid for 30-60 minutes with temperature of 94-97 deg.C to get densified zincite film with 3-D array after 30-60 minutes reaction. The film is composed of 3-D array micrometer rods with the mean size of 200 nm, 5 um long.

The present invention discloses a kind of fast, simple and cheap method of preparing strontium titanate. At normal pressure, metatitanic acid, soluble strontium salt, alkali and solvent are mixed and reacted for certain time to obtain precipitate; and the precipitate is dried to obtain high purity superfine nanometer strontium titanate powder. The obtained strontium titanate powder has high purity, completely developed crystal grain and small granularity, and can meet the requirement for use in electronic ceramic field. Compared with other synthesis paths, the present invention has the advantages of cheap material, mild reaction condition, relaxed requirement in apparatus, simple technological process, etc.

The invention relates to a preparation method for a silver catalyst used for production of oxirane through epoxidation of ethylene and also relates to the silver catalyst prepared by using the method and application thereof. The method comprises the following steps: providing a carrier; impregnating the carrier with an organic rhenium-containing auxiliary agent so as to obtain a first impregnation product; leaching and drying the first impregnation product and then impregnating the leached and dried first impregnation product with a silver amine containing an alkali metal auxiliary agent so as to obtain a second impregnation product; and subjecting the second impregnation product to thermal decomposition in an air current or a nitrogen oxygen mixture with oxygen content of no more than 21% so as to obtain the silver catalyst. The auxiliary agents used in the method comprise the alkali metal auxiliary agent and the organic rhenium-containing auxiliary agent. The performance of the silver catalyst can be improved by using an organic rhenium-containing precursor and adoption of an auxiliary agent addition manner of secondary impregnation.

The invention discloses a silver catalyst for preparing ethylene oxide through ethylene oxidation and a preparation method and application thereof, and belongs to the technical field of petrochemicalengineering. The silver catalyst is arranged on a composite carrier composed of alpha silicon carbide and alpha aluminum oxide. The silver catalyst is prepared from, by mass, 10%-20% of silver, 0.001%-1% of IA group elements, 0.1%-10% of IIA group elements, 0.1%-10% of VIIA group elements, 0.01%-1% of rare earth elements, 0.1%-1% of high-valence metal modified elements and 0.1%-5% of non-metal modified elements on the basis of the total mass of a silver catalyst dry base. The porosity of the silver catalyst is 45%-75%, the specific surface area is 0.1-2 m <2>/g, and the pore volume is 0.4-1.0ml/g. The silver catalyst has the advantages of good conduction, diffusion and reaction performances, uniform distribution of metal active components, and high selectivity, activity and stability in the oxidation reaction process.

The invention relates to a method for preparing a silver catalyst for producing ethylene oxide by ethylene through epoxidation, and also relates to the silver catalyst prepared by the method and an application of the silver catalyst. The method comprises the following steps: 1) providing a carrier; 2) using an organic rhenium-containing solution for impregnating the carrier, then drying the carrier at the temperature of 80 DEG C to less than 120 DEG C for 30-120 minutes to obtain a first impregnation product; 3) using a silver amine solvent containing an alkali metal-containing auxiliary agent used for impregnating the first impregnation product for 10-60 minutes under condition of a vacuum degree being less than 10mmHg; and 4) performing thermal decomposition on a second impregnation product to obtain the silver catalyst.

The invention provides a novel method for catalytically synthesizing acetanilide and relates to the technical field of preparation of the acetanilide. The novel method for catalytically synthesizing the acetanilide comprises the following step: enabling aniline and glacial acetic acid to react under the action of a catalyst, wherein the catalyst is a mixture of aluminum borate and manganese dioxide and the weight ratio of the aluminum borate to the manganese dioxide is (2 to 4) to 1. By adopting the novel method for catalytically synthesizing the acetanilide, the blank of a preparation methodfor catalytically synthesizing the acetanilide is filled; the preparation efficiency of the acetanilide is effectively improved, so that the yield of the acetanilide is improved; the novel method hasrelatively great industrial popularization value.

The present invention relates to an olefin epoxidation silver catalyst preparation method comprising the following steps: a) uniformly mixing a silver-containing impregnating solution with a sol to form a mixed solution; b) using a carrier for impregnation in the impregnating solution obtained in the step a), performing solid liquid separation, and drying an obtained solid; and c) activating the dried solid obtained by the step b). The present invention also relates to a silver catalyst obtained by the method and application thereof.

The invention relates to a degradable transparent conductive film which consists of a carrier film and a conductive film. The innovation point is characterized in that the carrier film is a degradable polyethylene carrier film; and the conductive film is an aluminum oxide transparent conductive film which is evaporated on the surface of the degradable polyethylene carrier film in vacuum. A production method of the degradable transparent conductive film comprises the following steps of: preparing the degradable polyethylene carrier film by using polyethylene and a photosensitive catalyst; preparing the aluminum oxide transparent conductive film by aluminum chloride used as a raw material and evaporating the degradable polyethylene carrier film and the aluminum oxide transparent conductive film in vacuum to prepare the degradable transparent conductive film. In the invention, the transparent conductive film has the prominent advantages of degradation and no pollution, and the production method of the transparent conductive film is simple and easy to operate, and has the advantages of low cost, energy-saving and environment protection.