661results about How to "Lower synthesis cost" patented technology

The invention discloses a process for preparing mordenite/ZSM-5 mixed crystal material, which comprises charging mordenite into ZSM-5 synthesized reaction mixture as seed crystal, and water thermal crystallization. The invention realizes low preparation cost and more ideal catalyzing performance.

The invention relates to a synthesis method of fine grain ZSM-5 zeolite molecular sieve with high silicon aluminium ratio, which comprises using a surface active agent, charging it into acidified aluminium salt solution, then slowly dropping alkaline solution formed from sodium silicate, template agent and seed crystal into aluminium saline solution, the overall composition of the obtained reaction mixture being Na2O:Al2O3:SiO2:H2O=1.5-4.0:1:20-280:500-2000 by mol ratio, then subjecting the reaction mixture to thermal crystallization through the conventional method.

An apparatus for generating a merged audio data stream is provided. The apparatus includes a demultiplexer for obtaining a plurality of single-layer audio data streams, wherein each input audio data stream includes one or more layers, wherein the demultiplexer is adapted to demultiplex each one of one or more input audio data streams having one or more layers into two or more demultiplexed audio data streams having exactly one layer. Furthermore, the apparatus includes a merging module for generating the merged audio data stream based on the plurality of single-layer audio data streams. Each layer of the input data audio streams, of the demultiplexed audio data streams, of the single-layer data streams and of the merged audio data stream includes a pressure value of a pressure signal, a position value and a diffuseness value as audio data.

The invention discloses a method for preparing hierarchical porous titanium silicalite TS-1, which is characterized in that: carbon black is replaced by cheap sugar, and materials such as carbon nanotubes and the like are used as a mesoporous/macroporous template, so the synthesis cost of a molecular sieve is greatly reduced. In the process of preparing dry glue by performing heat treatment on sugar-containing TS-1 molecular sieve synthetic sol, the sugar is heated and part of sugar is carbonized and dehydrated to directly form a hard template, so that high-temperature carbonization under the protection of inert gas is avoided, the complicated process of separately preparing a carbon template and a carbon-silicon complex is saved, and the preparation process of a hierarchical porous zeolite molecular sieve is greatly simplified. The product prepared by the method has the advantages of regular shape and microporous channel of the conventional TS-1, mesopores of 4 to 50nm and macropores of more than 50nm which pass through zeolite, and mutually communicated hierarchical porous channels to overcome the limitation of inherent micropores of the zeolite on catalytic reaction, and can be used for olefin epoxidation, aromatic hydrocarbon hydroxylation, cyclohexanone ammoxidation, oxidation removal of different sizes of sulfides in liquid fuel, and the like.

A preparation method of a multi-stage pore channel beta molecular screen belongs to the technical field of preparation of a multi-stage pore channel molecular screen. The preparation method is as follows: synthesizing the multi-stage pore channel beta molecular screen in one step by pseudo solid phase aluminosilicate; the molecular screen comprises a honeycomb-shaped structure or a plurality of particles in the size of 5micron to 60micron, the honeycomb-shaped structure or particles are polymerized by small crystal particles of a nano-level molecular screen, and the size of the small crystal particles of the nano-level molecular screen is 10nm to 100nm; and the aperture of one of meso pores formed by the polymerization of the small crystal particles of the nano-level molecular screen is 3nm to 45nm, and the aperture of a micro-pore is 0.6nm to 0.8nm. A second template agent is not in need during the synthesis process, so that the synthesis cost is reduced and the synthesis step is simplified; and in addition, the filtering is not in need after the crystallization is finished, therefore, the yield of the molecular screen is greatly enhanced.

The invention discloses a preparation method of nanometer molecular sieve. The method is to firstly mix hydrocarbon components and surfactants evenly, then add silica gel and silica-alumina gel, and continue to stir until the raw materials are evenly mixed to obtain a super-solubilizing system of oil-in-melt, and then undergo crystallization, drying and roasting Finally, nano molecular sieves are obtained. The crystallization of the molecular sieve in the present invention is carried out in a supersolubilized micelle system of molten silica gel or silica-alumina gel in oil, and the growth of the molecular sieve crystal is limited in the nano-micelle to avoid excessive growth of the molecular sieve crystal. The surfactant and hydrocarbon components used in the method of the invention are used in small amounts and low in cost. The method has a simple process and can be used for large-scale industrial production.

The invention discloses a 3,5-dihalogenation sulfo-benzamide insecticide and preparation method and application thereof. The 3,5-dihalogenation sulfo-benzamide insecticide is represented as a structural formula I. In the formula I: R1 is C1 or Br, R2 is selected from methyl, isopropyl and allyl, and R3 is H or C1. The 3,5-dihalogenation sulfo-benzamide insecticide can be used for prevention and control of agricultural insects or forest insects.

A method of synthesizing titanium silicate molecular sieve is to hydrothermally crystallize the hydrolytic solution of silicon and titanium in a closed reaction vessel and then recycle the product. The method is characterized in that the hydrolytic solution of silicon and titanium is gotten by any one of the following three methods: A. under ultrasonic agitation, silicon source is first hydrolyzedin organo-alkali compound solution and then the titanium source is hydrolyzed in the solution; B. under the ultrasonic agitation, titanium source is first hydrolyzed in organo-alkali compound solution and then the silicon source is hydrolyzed in the solution; C. under the ultrasonic agitation, silicon source and titanium source are respectively hydrolyzed in organo-alkali compound solution and then mixed together. The synthetic method can eliminate partial uneven concentration, leads the amount of TiO2 generated by self agglomeration after the hydrolysis of titanium source to be as little as possible and reduces the production of extra framework titanium. Compared with the prior art, the TS-1 molecular sieve synthesized by the method not only has better catalytic oxidation activity and selectivity but also has better stability of catalytic activity.

The invention relates to a method for preparing a nano layered ZSM (Zeolite Molecular Sieve)-5 zeolite molecular sieve by using a micro-emulsion. The preparation method comprises the following preparation steps of: preparing a zeolite pecursor solution in an oxide molar ratio of Al2O3 to SiO2, TPA2O, Na2O and H2O as 1:(100-400):(1-100):(300-3000); mixing the prepared zeolite pecursor solution with an oil phase, a surfactant and a co-surfactant in a certain ratio to prepare a W/O (water-in-oil) micro-emulsion, then transferring the prepared micro-emulsion to a crystallization kettle, sealing and statically crystallizing for 6-72 hours at a temperature of 90-120 DEG C. The thin layer of the molecular sieve prepared by the invention has a thickness of about 30nm, a regular shape and a crystallization degree of greater than 90%; the used organic phase can be repeatedly used by separating after the synthetic process of the molecular sieve ends, so that the synthetic cost is reduced; and the method disclosed by the invention is an environmentally-friendly synthetic method.

The invention relates to a preparation method of a NiAl intermetallic base solid self-lubricating composite material containing Ti3SiC2 and C binary composite lubrication phase and wild phase TiC. The NiAl intermetallic base solid self-lubricating composite material is prepared from Ni powder, Al powder, Mo powder, Nb powder, Fe powder, B powder and Ti3SiC2 powder, wherein the molar ratio of Ni: Al: Mo: Nb: Fe: B=48: 50: 1: 1: 0.5: 0.02, and the addition quantity of the Ti3SiC2 powder is 5-20 weight percent of the total weight of the Ni powder, the Al powder, the Mo powder, the Nb powder, theFe powder and the B powder. The NiAl/ Ti3SiC2-C/TiC intermetallic base solid self-lubricating composite material synthesized by the method has novel component design (intermetallic matrix+ composite lubrication phase+ wild phase), high density, good tribological properties and stable technological parameters. The preparation process is fast and simple, and the method is easily operated and is suitable for preparing NiAl intermetallic base solid self-lubricating composite materials with high performance.

The invention provides a preparation method and use of a Bi2O3/Bi2O4 phase heterojunction photocatalyst. The preparation method comprises the following steps: firstly, mixing 2.8 g of bismuth salt with 0-1.87 g of alkali uniformly to prepare a paste; then, placing a mixture into a muffle furnace and calcining at 100-450 DEG C for 0.5-4.0 h; washing a calcined substance with deionized water; and drying at 60 DEG C to obtain earthy yellow to reddish brown solids which are the Bi2O3/Bi2O4 heterojunction photocatalyst. The Bi2O3/Bi2O4 phase heterojunction photocatalyst prepared in the invention isused for degrading organic pollutants in water, and has higher visible light catalyzing activity than a commercial Bi2O3 photocatalyst.

The invention relates to a method for synthesizing a NaA molecular sieve membrane. A seed crystal coating mode of combining the coating and the dipping of seed crystal is used for the synthesis of the molecular sieve membrane. Firstly, a supporting body is polished by sand paper and is dried; a seed crystal paste is coated on the surface of the supporting body to remove the possible defects on the surface of the supporting body; secondly, the seed crystal is precoated by a lifting and dipping method; and finally the NaA molecular sieve membrane is synthesized by a hydrothermal synthesis method. The NaA molecular sieve membrane synthesized by the method has continuous and compact surface, excellent separation performance and good repeatability and is suitable for scale preparation.

The invention relates to a synthetic method of graphite alkene, in particular to a method for synthesizing the graphite alkene by coordination assembly, solving the problems of hardly controlled size, poor production safety, uneven thickness, high production cost, complicate reaction equipment, strict reaction conditions, low yield, and the like existed in the prior preparation method so that the industrialized production is difficult. The method of the invention comprises the following steps: (1) pretreating a carbon source with coordinating groups; (2) adding into a solvent; pretreating; adding a catalyst and stirring; (3) coordinating and assembling; (4) pre-carbonizing; (5) thermally treating; and (6) returning acid and washing and drying distilled water to obtain the graphite alkene. The graphite alkene of the invention has even appearance, a single or multi-layer two-dimensional layered structure, a size of 500 nanometers -5 micrometers, favorable conductivity and wide range of application. The invention has simple technology, low cost, high yield, simple equipment, strong production safety, controllable product size and easily realized industrialized production.

The present invention relates to the preparation process of MCM-49 molecular sieve and solves the problems in the preparation process, including high MCM-49 molecular sieve synthesizing cost and environmental pollution. The technological scheme of the present invention is that during the preparation of MCM-49 molecular sieve, partial or all template agent comes from MCM-49 molecular sieve crystallizing mother liquid. The present invention may be used in industrial preparation.

The invention relates to a magnetic separation type composite adsorbing material which is prepared from nano Fe3O4 and active carbon fiber. The ferriferous oxide nano composition fiber material is synthesized by using conventional organic solvent as the reaction medium under the control of a simple low temperature solvent thermal system. The magnetic separation type composite adsorbing material can be used as a magnetic separation type adsorbing material for adsorbing organic or inorganic pollutants to purify waste water.

The invention discloses a preparation method of a nano zero-valent iron loaded hydrophilic porous biochar composite material, relates to preparation methods of hydrophilic porous biochar composite materials, and aims to solve the problems that an existing matrix loading metal particles is high cost, and nano zero-valent iron is unstable and prone to agglomeration and is low in performance when being applied to heavy metal adsorption. The method includes the steps of firstly, subjecting biomass to pyrolysis and molten salt activation; secondly, preparing a hydrophilic porous biochar material; thirdly, loading the nano zero-valent iron to obtain the nano zero-valent iron loaded hydrophilic porous biochar composite material. The specific surface area of the prepared nano zero-valent iron loaded hydrophilic porous biochar composite material can reach 603.4m<2>*g<-1>. Due to the fact that corn straw is agricultural waste which is low in cost and wide in source, the cost of the preparation method is lowered by using the pyrolysis product of the corn straw as the matrix material. The prepared nano zero-valent iron loaded hydrophilic porous biochar composite material is applicable to the field of environmental pollution remediation.

The invention discloses a method for separating ethylene and acetylene from a mixed gas. The method comprises the step of using a metal organic frame material as an adsorbent for separating the ethylene and the acetylene from the mixed gas containing the ethylene and the acetylene; the metal organic frame material has a structural formula of M(C7O5H4).2H2O, wherein M is a metal ion, and the metalorganic frame material is a three-dimensional network structure formed by coordination bonds or intermolecular forces from a transition metal ion or alkaline earth metal ion and gallic acid. The metalorganic frame material has a large adsorption capacity for the acetylene and an excellent selectivity for adsorption and separation of ethylene/acetylene. The materials for the synthesis of the material is cheap and easy to obtain, the material preparation process is simple, and the cost is low; and the material has good regeneration and repetition performance, can still maintain the original adsorption effect after vacuum or heating regeneration, and has broad industrial application prospects.

The invention discloses a production method for manganous/magnesium silicate of chargeable magnesium battery positive pole material, which is the manganous/magnesium silicate of chargeable magnesium battery positive pole material using molten salts as reaction medium and having the characteristics of quickening up reaction speed, shortening reaction cycle, simplifying synthesis course, reducing synthesis cost, small synthesis particle size and symmetrical distribution of the particles. The material exhibits remarkable electrochemical charge and discharge effects, the steady discharge platform works up to 1.6V and 1.1V(vs.Mg/Mg<2+>); on the charge and discharge conditions of C/20 current density, the discharge capacitance can reach 289.3mAh*g<-1>(theoretical capacitance is 92%). In contrast to the relatively ideal positive pole material Mo3S4 of the current chargeable magnesium battery, the manganous/magnesium silicate positive pole material produced by the molten salt process has the advantages of simple production, large capacitance, high discharge voltage platform and the like.

The invention belongs to the technical field of heterogeneous catalysis and particularly discloses a copper-based MOF carbonization derived catalytic material and a preparation method and applicationthereof in the field of unsaturated hydrocarbon selective hydrogenation. The copper-based MOF carbonization derived catalytic material and the preparation method have the advantages that by controlling pyrolysis conditions and using organic ligands as the self-sacrificial template to reduce copper ions in an in-situ manner, the metal active center of the prepared catalytic material is highly dispersed, the specific surface area of the catalytic material is larger than that of a traditional supported catalyst, and the catalytic material has rich mesoporous and micropore structures and can provide a sufficient place for hydrogenation reaction; nanoscale, sub-nanometer even atomic-scale metal particles in the structure of the catalytic material have extremely high surface energy, so that theactivity and selectivity of the catalytic material are much better than those of common metal catalysts and even can be on a par with those of precious-metal catalysts; the catalytic material is suitable for activity the carbon-carbon double bonds or triple bonds of unsaturated hydrocarbon and can adsorb free hydrogen to perform selective hydrogenation reaction and the like; the catalytic materialis low in synthesizing cost and can provide a brand new thought for an existing catalytic hydrogenation process.

The invention provides an alpha/beta-Bi2O3 phase heterojunction photocatalyst as well as a preparation method and application thereof. The method comprises the following steps: firstly dissolving 2-4mmol of a bismuth source material in 70mL of a reductive solvent, magnetically stirring for 30 minutes under the room temperature, then adding 0-2.0mL of aniline into the solution, and continuing to stir for 10 minutes; transferring the mixed solution into a reactor, putting the mixed solution in a drying oven for carrying out solvothermal reaction for 8-12 hours at the temperature of 150-180 DEG C to obtain a bismuth-based precursor; washing, drying and grinding the precursor, putting the precursor in a muffle furnace for calcining for 0.5-2.0 hours at the temperature of 300 DEG C to obtain yellowish green powder which is the alpha/beta-Bi2O3 phase heterojunction photocatalyst. The prepared alpha/beta-Bi2O3 phase heterojunction photocatalyst is used for degrading organic pollutants in water; compared with commercial TiO2 (P25), pure-phase alpha-Bi2O3 and pure-phase beta-Bi2O3 photocatalysts, the alpha/beta-bismuth oxide phase heterojunction photocatalyst has higher visible-light catalytic activity.

The invention discloses a preparation method of low-cost ZSM-5 type zeolite molecular sieve, and application of the low-cost ZSM-5 type zeolite molecular sieve, belonging to the field of a molecular sieve preparation technology. The method comprises the steps of a. drying pulverized fuel ash raw powder to constant weight, mixing HCl solution with the dried pulverized fuel ash, stirring, centrifuging, washing and drying for later use; b. grinding the pulverized fuel ash treated by the step a, mixing the ground pulverized fuel ash with NaOH for melting, cooling, grinding and screening by a molecular sieve; feeding the ground melt into deionized water, mixing, stirring under the condition of water bath, and carrying out centrifugal separation to obtain liquid supernatant; c. taking the liquid supernatant obtained in the step b, taking tetrapropylammonium hydroxide as a template agent and NH4F as a mineralizer, mixing and carrying out crystallization reaction; after that, taking out the product, quenching to the room temperature, washing, drying and roasting to obtain the zeolite molecular sieve. According to the method, the pulverized fuel ash discharged by a thermal power plant is fully utilized as a silicon-alumininm source and is used for replacing pure chemical reagents Si and Al for synthesizing the molecular sieve, so that the synthesis cost of the molecular sieve is lowered, and the utilization value is high.

The invention relates to an MCM-22 zeolite molecular sieve containing rare earth heteroatoms in a skeleton and a hydrothermal synthesis method thereof. The method is characterized by comprising the following steps: regulating the pH value of the mixed solution of a silicon source and a rear earth source to perform co-hydrolysis and obtain a silicone gel precursor containing rear earth; then adding an organic template agent to obtain a solution A; mixing water, an aluminum source and an alkali source uniformly according to a certain proportion to obtain a solution B; slowly adding the solution B in the solution A dropwise to obtain a crystallization liquid; and placing the crystallization liquid in a hydrothermal kettle, sealing and performing the static hydrothermal crystallation for 5-30 days at 140-180 DEG C to obtain the skeleton rare-earth heteroatom molecular sieve MCM-22 with the MCM-22 crystal structure. The method avoids the phenomenon that only rare-earth heteroatoms are hydrolyzed to generate oxide precipitate; the crystallization process uses the static method without the stirring step, thereby simplifying the operating condition and reducing the production difficulty. In addition, the product has high crystallization degree and high hydrothermal stability and the preparation method has good repeatability.

The invention provides an order mesoporous hollow zeolite material and a one-step hydro-thermal synthesis method thereof, belonging to the inorganic material field. The order mesoporous hollow zeolite material of the invention is characterized in that the hollow zeolite is provided with an inorganic crystal framework with micropore and mesoporous structure simultaneously, the particle diameter of the hollow mesoporous zeolite is 0.1-50 microns, the wall thickness of the hollow particle is 0.01-0.5 micron, pore canal size of the micropore and mesoporous is 0.4-50nm, and the order pore canals are communicated in three dimensions. In the invention, zeolite molecular sieve mother liquor is selected and added with surface active agent to obtain an order mesoporous zeolite molecular sieve by hydrothermal method. The invention reduces material synthesis cost with simple technique, and the prepared material has high hydrothermal stability and order mesoporous hollow structure.

The invention relates to a method of preparing a symbiotic molecular sieve of ZSM-5/mordenite, which aims at solving the problems of high synthesis cost and serious environmental pollution caused by adding templates in the synthesis process of the molecular sieve in prior art. By adding crystal seed which contains ZSM-5 and mordenite precursors in the synthesis process of the molecular sieve and controlling the mole composition and PH value of the synthetic solution of the molecular sieve precursors, the symbiotic molecular sieve consisting of ZSM-5 and mordenite can be prepared without using templates, which well solved the problems. The symbiotic molecular sieve can be used in the industrial production of ethylene and propylene by using naphtha catalytic cracking.

The invention discloses a preparation method for a metal sulfide and a composite metal sulfide nano crystal material, which is suitable for the preparation of the nano crystal materials of cadmium sulfide, cuprous sulfide, zinc sulfide, lead sulfide, bismuth sulfide, and zinc-cadmium sulfide. The method is characterized in that water or organic solvent used in the existing hydrothermal or solvent thermal synthetic methods is replaced with melt composite alkali metal hydroxide which is synthesized through a chemical reaction under the normal atmosphere and a temperature between 100 and 300 DEG C. The raw materials used are soluble inorganic metal salts and sulfide or sulfide compounds, thereby having less controllable parameters and simple art, and being able to amplify manufacturing during the process of synthesis. Metal sulfide crystal produced has the advantages of good crystal, clean surface and even size, and is suitable for the research on the intrinsic properties and the maximum play of the functions of the nano crystal materials. The metal sulfide and the composite metal nano crystal materials have properties of a semiconductor, LED and optoelectronic, thereby being suitable for biomarker and preparation of a nano electronic apparatus, an LED apparatus and an optoelectronic apparatus.

A dithioamino acid triazine derivative as the additive of antioxidizing extreme-pressure lubricating oil is prepared by the reaction of dialkyl bithioaminoformate and tripolychlorocyanogen. Its advnatages include gentle reaction condition and high antioxidizing performance.

The invention relates to a monox hollow sphere material with a multi-stage pore structure and a preparation method of the monox hollow sphere material, belonging to the field of inorganic materials. In the monox hollow sphere material with the multi-stage pore structure, the pore channel size of a monox shell is 2-50 nm and controllable, the diameter of the sphere is 30nm-10 microns, the specific surface area is 100-2000m<2>/g, and the total pore capacity is 0.05-2.0 cm<3>/g. The monox hollow sphere material is prepared by using an organic sphere as a template of a hollow core, using alkaline solution to regulate the PH value, using surfactant as a pore-forming agent for a pore-sphere shell, stirring, centrifuging, washing, drying and roasting. The monox hollow sphere material can be used as a carrier material for an absorbent, a catalyst and a drug release system.

The invention relates to a method for preparing a mordenite molecular sieve. The method comprises the following steps of: dissolving an aluminum source in a sodium hydroxide solution, adding silicon sources, stirring at room temperature by strong magnetic force, and dispersing for a period of time; mixing the silicon sources which are dispersed uniformly and an aluminum source solution to form glue, adding a zeolite molecular sieve containing a five-membered ring as a crystal seed, stirring and mixing uniformly by the strong magnetic force at room temperature, and transferring the mixture into a reaction crystallization kettle, and performing crystallization reaction at the temperature of between 150 and 170 DEG C for 0.5 to 3 days; and performing suction filtration, washing and drying conventionally to obtain the mordenite molecular sieve. According to the method, an expensive organic amine template agent is not used as a structure guiding agent, and the zeolite molecular sieve which is wide in using, low in cost and readily available and contains the five-membered ring is used as the crystal seed to synthesize the mordenite molecular sieve with a high silica-alumina ratio directly, so the prepared mordenite molecular sieve has the advantages of high crystallinity and purity, controllable granular sizes and appearance, high yield, convenience for industrial production and the like.

The invention discloses a preparation method of mesoporous silica spherical nano particles with a dendritic pore structure. A template agent adopted by the method is cetyltrimethyl p-methylbenzene ammonium sulfonate, an alkali source is organic small-molecular amine, and a silicon source is tetra-alkyl silicate ester; the added co-surfactant is a three-block neutral polymer F127; in the raw materials, the molar ratio of the silicon source to the template agent to organic small-molecular amine to F127 to water is 1:(0.03-0.06):(0.001-8.0):(0.0001-0.1):(20-1,000); the particle sizes of the particles can be effectively controlled from 20nm to 200nm. By simply controlling the addition amount of the co-surfactant F127 and the addition order before and after the silicon source, the particle size of the mesoporous silica with a dendritic pore structure can be effectively controlled. The synthesis method provided by the invention is simple and low in cost, has a short period and good repeatability, and is environment-friendly.

The invention discloses a synthesis method for a betaine-type amphoteric ion compound containing a reactive group. The synthesis method comprises two synthesis methods, namely, a synthesis method for a betaine-type amphoteric ion compound containing carbon-carbon double bonds, and a synthesis method for a betaine-type amphoteric ion compound containing hydroxyl group, wherein the synthesis method for the betaine-type amphoteric ion compound containing carbon-carbon double bonds comprises the step of reacting tertiary amine containing carbon-carbon double bonds and having a molar ratio of 1: 0.2 to 1: 1.5 with a carboxylic acid compound or a sulfonic acid compound containing an alpha, beta-unsaturated ketone structure for 1-120 hours at 0-100 DEG C in a condition of the presence of a first solvent and a polymerization inhibitor; and the synthesis method for the betaine-type amphoteric ion compound containing hydroxyl group comprises the step of reacting tertiary amine containing hydroxyl group and having a molar ratio of 1:0.5 to 1:2 with a carboxylic acid compound or a sulfonic acid compound containing an alpha, beta-unsaturated ketone structure for 1-120 hours at 0-100 DEG C in a condition of the presence of a second solvent. The synthesis method is simple, moderate in conditions, few in side reactions, high in product purity, simple in purification process, and high in yield, thus being capable of reducing the synthesis cost for the product.