768 results about "Dimethyl ether" patented technology

The invention belongs to the technical field of regenerated polyester, and particularly relates to a waste cotton-polyester blended fabric recycling method which comprises the following steps: firstly, decolorizing a colored waste cotton-polyester blended fabric by adopting a decolorizing agent, then mixing a depolymerizing agent, isosorbide dimethyl ether, a first catalyst and the decolorized cotton-polyester blended fabric, and then carrying out depolymerization reaction, the decolorizing agent and the depolymerizing agent are more than one of dimethyl carbonate, diethyl carbonate and methyl ethyl carbonate, and the temperature of the depolymerizing reaction is 130-150 DEG C; washing the separated cotton fibers with water, and screening to remove residual polyester powder on the surfaces; firstly, terephthalate is converted into DMT, and then DMT, ethylene glycol, a second catalyst and a functional additive are subjected to a repolymerization reaction to obtain regenerated polyethylene glycol terephthalate. According to the method, depolymerization and polyester cotton separation processes are ingeniously fused, so that the operation steps are simplified, the energy consumption is reduced, and the purity of a depolymerization product is also improved.

The invention provides a gel-state polymer electrolyte as well as a preparation method and application thereof, and belongs to the field of batteries. The gel-state polymer electrolyte provided by the invention comprises the following preparation raw materials: a polar organic solvent, a lithium salt, a lithium salt additive, a liquid flame retardant, a liquid monomer and an initiator, the polar organic solvent comprises 1, 3-dioxolame and ethylene glycol dimethyl ether; the dosage ratio of the lithium salt to the polar organic solvent is 1 mmol: (0.5-2) mL; the mass of the lithium salt additive is 1.5-5% of the total mass of the lithium salt and the polar organic solvent; the volume of the liquid flame retardant is 10-20% of the volume of the polar organic solvent; the volume of the liquid monomer is 10-20% of the volume of the polar organic solvent; the mass of the initiator is 0.5-2% of the total mass of the lithium salt, the polar organic solvent and the monomer. And Li < + > in the lithium salt is released after the type of the solvent is adjusted, so that the Li < + > transference number and the ionic conductivity are improved.

The invention discloses a supported iron-molybdenum catalyst for formaldehyde production and a preparation method and application thereof, and belongs to the field of catalysts.The catalyst comprises a core-shell structure, the core of the catalyst is a carrier, molybdenum trioxide is supported on the carrier, and the shell of the catalyst is iron molybdate. The carrier is selected from at least one of silicon dioxide, aluminum oxide, titanium oxide, magnesium oxide, magnesium silicate, a molecular sieve, white carbon black and hydroxyapatite; the preparation method comprises the following steps: firstly, loading molybdenum trioxide on a carrier, then dispersing the carrier in deionized water, dropwise adding a molybdenum source solution and an iron source solution in a parallel flow manner under stirring to perform deposition loading of iron molybdate, and performing aging, drying, forming and calcining to obtain the catalyst. The catalyst is used for preparing formaldehyde by oxidizing methanol, dimethyl ether and methylal; according to the catalyst disclosed by the invention, the raw material cost and the pollutant treatment capacity are obviously reduced due to the reduction of the dosage of molybdenum and iron components, and the catalyst has relatively good activity and stability.

The invention discloses a high-strength moisture-proof gypsum board and a preparation method thereof, and relates to the technical field of gypsum board preparation. The high-strength moisture-proof gypsum board is prepared by dipping the surface paper in the composite dipping liquid and then pouring the surface paper and the gypsum core with the waterproof agent, the composite dipping liquid comprises the methoxy vinyl ether copolymer and the epoxy polyoxymethylene dimethyl ether, and the methoxy vinyl ether copolymer is 2, 3, 5-trimethyl-1, 3-pentanediol monoisobutyrate. According to the present invention, epoxy polyoxymethylene dimethyl ether is prepared by reacting 2, 4-dimethoxymethoxyphenylacetic acid with 2-hydroxyethyl vinyl ether, and the epoxy polyoxymethylene dimethyl ether is prepared by terminating polyoxymethylene dimethyl ether with allyl and then reacting with phthalimide hexperoxy acid, such that the waterproofness and the mechanical property of the gypsum board are improved; the waterproof agent is prepared by reacting hydrogen-containing silicone oil and fluorine-containing hyperbranched amide polyurea urethane, so that the moisture resistance and bonding strength of the gypsum board surface paper are enhanced, and additional mechanical support is provided for the gypsum board.

The invention belongs to the technical field of organic synthesis of ethers, and particularly relates to a method for continuously synthesizing ethylene glycol dimethyl ether. The method comprises the following steps that ethylene glycol, sodium hydroxide and methane chloride serve as raw materials, multi-stage continuous reaction is carried out in liquid membrane reactors to synthesize ethylene glycol dimethyl ether, ethylene glycol, sodium hydroxide and methane chloride are introduced into the first-stage liquid membrane reactor, sodium hydroxide and methane chloride are introduced into the subsequent stages of liquid membrane reactors, and the first-stage liquid membrane reactor and the second-stage liquid membrane reactor are connected with the second-stage liquid membrane reactor. A byproduct sodium chloride is separated from a reaction product in the previous-stage liquid membrane reactor and then enters the next-stage liquid membrane reactor, a byproduct sodium chloride is separated from a reaction product in the last-stage liquid membrane reactor and then clear liquid is obtained, and ethylene glycol dimethyl ether is obtained through rectification treatment. The invention develops a novel process mode for continuously synthesizing an ethylene glycol dimethyl ether product, and provides a new idea for large-scale continuous production of ethylene glycol dimethyl ether.

Operating an engine system includes calculating a crank angle timing term corresponding to an in-cylinder temperature sufficient for autoignition of a first fuel injected at a first injection location. Operating an engine system further includes calculating, based on the crank angle timing term, at least one of an injection amount or an injection duration, to increase the in-cylinder temperature sufficiently via burning of the first fuel to ignite a second fuel injected into a mixture of the first fuel and pressurized intake air. The first fuel may include a blend of dimethyl ether (DME), methanol (MeOH), and water. Based on expected progression of in-cylinder temperatures, and fuel injection amount and / or duration based thereon, desirable controllability of combustion phasing and / or other combustion properties may be realized.

The invention discloses a short c-axis flaky mordenite molecular sieve as well as a preparation method and application thereof, and belongs to the technical field of molecular sieves. The chemical composition of the short c-axis flaky mordenite molecular sieve is Ra.Mb. (SixAly) O2, r is a template agent tetraethylammonium ion; a is the mole number of R in each mole of (SixAly) O2, and a is more than or equal to 0.02 and less than or equal to 0.04; m is an alkali metal ion; b is the mole number of M in each mole of (SixAly) O2, and b is more than or equal to 0.02 and less than or equal to 0.06; x is the mole fraction of Si in each mole of (SixAly) O2, and x is more than or equal to 0.9 and less than or equal to 0.97; y is the mole fraction of Al in each mole of (SixAly) O2, y is more than or equal to 0.03 and less than or equal to 0.1, and x + y is equal to 1; and the dimension thickness of the stone molecular sieve in the c-axis direction is 20-80 nanometers. The molecular sieve shows excellent catalytic performance in a catalytic reaction for preparing methyl acetate through dimethyl ether carbonylation.

The invention relates to the technical field of biomass liquid fuels, in particular to a biomass liquid fuel and a preparation method thereof, and the biomass liquid fuel comprises the following components by weight: 40-60 parts of biomass-based methanol; 10 to 20 parts of biomass-based ethanol; 5 to 15 parts of biomass-based n-butyl alcohol; 5 to 10 parts of dimethyl ether; 10 to 20 parts of biodiesel; 1-5 parts of a lignin derivative; 0.1 to 0.5 part of an antioxidant; 0.1 to 0.5 part of a stabilizing agent; 0.5-2 parts of a purification dispersant; 1-3 parts of bio-based glycerol n-butyl ether; according to the invention, a plurality of alcohols (methanol, ethanol and n-butyl alcohol) are synergistically used, so that a series with the carbon chain length gradually increasing from C1 to C4 is formed. According to the design, the volatility and the energy density of the fuel are balanced, the oxygen content of the fuel is increased through hydroxyl (-OH) in alcohol molecules, and more complete combustion is promoted.

The invention belongs to the technical field of synthesis of ether organic compounds, and particularly relates to a one-pot catalyst-free method for preparing ethylene glycol dimethyl ether from ethylene glycol, which comprises the following steps: (1) adding ethylene glycol into a reaction kettle, heating to 120-140 DEG C, introducing methane chloride, and controlling the introduction amount of methane chloride to be 20-50% of the total molar amount of ethylene glycol; (2) adding NaOH into the reaction kettle in batches, and stirring for reaction at the reaction temperature of 120-140 DEG C; (3) after the last batch of NaOH is added, sampling and detecting every 20-25 minutes, and measuring the concentration lt of NaOH in the reaction liquid; and when the concentration is 0.05 mol / L, finishing the reaction, filtering, and carrying out post-treatment rectification on the filtrate to obtain the ethylene glycol dimethyl ether. The preparation raw material ethylene glycol can be derived from biomass or coal, dependence on petroleum resources is reduced, and meanwhile the preparation method has the advantages of being few in side reaction and low in production cost.

The invention relates to the technical field of methanol dimethyl ether fuel synthesis processes, in particular to a preparation method of a low-carbon biomass methanol dimethyl ether fuel. Biomass thermal cracking charcoal, tar, pyroligneous liquor and an additive are blended into neutral charcoal slurry according to a certain proportion, and then the neutral charcoal slurry is converted into the low-carbon biomass methanol dimethyl ether fuel. According to the biochar particles, a grading technology is adopted, namely, biochar with different particle sizes is mixed in proportion for pulping, so that the pulping concentration of biochar pulp can be effectively improved; according to the method, the pH of the wood vinegar is adjusted to be neutral, particulate matter in the solution is filtered out, and then pulping is conducted, so that the pulping concentration and the pulp quality can be effectively improved, and meanwhile pipeline blockage and nozzle abrasion are avoided.

The invention discloses a preparation method of a thidiazuron preparation, and relates to the technical field of thidiazuron preparation. The preparation method of the thidiazuron preparation comprises the following steps: adding 5-amino-1, 2, 3-thiadiazole, ethylene glycol dimethyl ether and triethylamine into a four-neck flask, heating and uniformly stirring, dropwise adding phenyl isocyanate into the mixed solution obtained in the step 1, heating to carry out catalytic synthesis reaction, cooling to room temperature, and carrying out suction filtration to obtain yellow solid thidiazuron. And further treating to obtain the thidiazuron preparation. Sodium nitrite is selected as a solvent in the preparation process of 5-amino-1, 2, 3-thiadiazole, and the amount of substance of another initial material aminoacetonitrile hydrochloride is controlled in the preparation reaction, so that the yield of thidiazuron is ensured to be optimal, the reaction temperature range and the dropwise adding amount are determined, the optimal reaction conditions are finally perfected, and the yield of 5-amino-1, 2, 3-thiadiazole is improved. A preparation mode which is simpler to operate, higher in yield and suitable for industrial production is provided for preparation of the thidiazuron preparation.

The invention belongs to the technical field of polycarbosilane, and particularly relates to a synthesis method of polydimethylsilane and application of the polydimethylsilane in preparation of polycarbosilane. In the Wurtz polymerization reaction of polydimethylsilane, polar solvents such as crown ether, diethylene glycol dimethyl ether, hexamethylphosphoric triamide and polyether are added into a reaction system, and the polar solvents have a complexing effect on sodium ions, so that tight ion pairs can be promoted to become loose ion pairs, the concentration of active anions is greatly increased, and the reaction time is shortened; therefore, the initiation period of the reaction is shortened, the polymerization reaction speed is accelerated, the molecular weight of polydimethylsilane is improved, and the yield is improved; the molecular weight of the polydimethylsilane is increased, the pyrolysis activation energy of the polydimethylsilane is gradually reduced, and the prepared polycarbosilane has higher Si-H bonds, and is high in A-grade conversion rate and good in spinning performance; according to the method, original reaction equipment does not need to be changed, reaction process parameters are also in original design, and the method has practical application value.

The invention provides chlorotrifluoroethylene continuously prepared based on a microchannel reactor and a preparation method of the chlorotrifluoroethylene, and the chlorotrifluoroethylene comprises the following raw materials in parts by weight: 1, 1, 2-trifluoro-1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 The low-temperature refrigerant refrigerant is prepared from the following components in parts by weight: 90 to 100 parts of 1, 2-trichloroethane, 1 to 5 parts of a zinc fluoride induced palladium-copper bimetallic catalyst, 8 to 15 parts of a cyclohexyl dimethyl ether-formic acid composite hydrogen donor, 0.5 to 2 parts of trifluoroacetic anhydride, 0.1 to 0.5 part of a perfluoropolyether lubricant, a proper amount of a low-temperature mixed refrigerant and 15 to 20 percent by weight of diluted hydrochloric acid. According to the invention, the preparation efficiency and product purity of chlorotrifluoroethylene can be improved, and stable operation of the preparation system and reasonable treatment of byproducts can be guaranteed.

The invention discloses a core-shell catalyst for preparing polyoxymethylene dimethyl ethers through methanol dehydrogenation and preparation and application thereof.The catalyst comprises an acidic molecular sieve, a metal active component and aluminum-containing mesoporous silica, the acidic molecular sieve serves as a core structure, the metal active component is coated on the surface of the acidic molecular sieve to form a first coating layer, and the aluminum-containing mesoporous silica serves as a second coating layer; and the aluminum-containing mesoporous silica is coated on the surface of the metal active component to form a second coating layer. According to the prepared core-shell catalyst, a middle acidic molecular sieve and aluminum-containing mesoporous silica on the outermost layer are used as acidic sites, a metal active component on the middle layer is used as a dehydrogenation site, and the two reaction sites are integrated to construct a bifunctional catalyst; in-situ coupling of two-step reaction of preparing formaldehyde through methanol dehydrogenation reaction and preparing polyoxymethylene dimethyl ether through condensation reaction of methanol and formaldehyde is realized, so that the reaction steps are simplified, and the reaction selectivity is also improved.

The utility model provides a reaction system for continuously synthesizing dimethyl sulfate, which comprises an absorption module I, an absorption module II, a reaction module I, a reaction module II and a pipeline module, the absorption module I and the absorption module II respectively comprise an absorption tower, a circulating tank, a circulating pump and a condenser, the reaction module I and the reaction module II respectively comprise a reaction tower, a circulating tank, a circulating pump and a condenser, and the pipeline module comprises a sulfur trioxide feeding pipeline, a dimethyl ether feeding pipeline, a crude dimethyl sulfate feeding pipeline, a tail gas conveying pipeline and a product conveying pipeline. The reaction system disclosed by the utility model realizes continuous generation of dimethyl sulfate, is simple to operate, low in device investment, high in reaction rate and high in yield, and provides a guarantee for realizing large-scale industrial production.

The invention relates to the field of fuel, and discloses a fuel composition and application thereof. The fuel composition comprises a basic fuel and functional fuel addition components, the functional fuel addition components comprise polyoxymethylene dialkyl ether, hydrocarbon, a cetane number enhancer and a lubricant, the hydrocarbon is polycyclic hydrocarbon fuel and / or polycyclic hydrocarbon fuel, and the cetane number enhancer is polycyclic hydrocarbon fuel and / or polycyclic hydrocarbon fuel. The lubricant is selected from dibasic acid monoester compounds and fatty acid and / or fatty acid polyol ester; based on the total mass of the functional fuel additive components, the content of the polyoxymethylene dialkyl ether is 1-70% by mass, the content of the hydrocarbon is 15-90% by mass, the content of the cetane number enhancer is 0.005-10% by mass, and the content of the lubricant is 0.001-5% by mass. The composition is suitable for making up the deficiency of polyoxymethylene dimethyl ethers in plateau areas and improving the power and power performance of fuel engines.

An electrolyte membrane for a battery that cycles lithium ions includes a sulfide-based solid electrolyte, a polymer binder, an inorganic filler, an inorganic lithium salt, and an ionic liquid. The sulfide-based solid electrolyte includes lithium sulfide (Li2S) and at least one element selected from the group consisting of phosphorus (P), tin (Sn), silicon (Si), germanium (Ge), boron (B), gallium (Ga), and aluminum (Al). The ionic liquid includes substantially equimolar amounts of a cation and an anion. The cation includes a complex of lithium (Li+) and an ethylene glycol dimethyl ether, an imidazolium ion, a piperidinium ion, a pyrrolidinium ion, an ammonium ion, a phosphonium ion, or a combination thereof. The anion includes an arsenate ion, a phosphate ion, a sulfonylimide ion, a borate ion, a chlorate ion, or a combination thereof.

The invention discloses nano UV light-cured printing ink and a preparation method thereof, and relates to the technical field of printing ink preparation. The nano UV light-cured printing ink is prepared from nano UV light, the invention discloses a UV (ultraviolet) photoinitiator, which is prepared from the following raw materials in parts by weight: 20 to 40 parts of polyurethane acrylate oligomer, 15 to 30 parts of modified bisphenol A type epoxy acrylate, 10 to 15 parts of tripropylene glycol diacrylate, 5 to 10 parts of ethoxylated trimethylolpropane triacrylate, 5 to 15 parts of modified nano titanium dioxide, 3 to 8 parts of nano silver wire, 2 to 5 parts of photoinitiator 1173 and 1 to 3 parts of benzoin dimethyl ether. The invention relates to a silver-loaded zirconium phosphate composite material which is prepared from the following components in parts by weight: 0.5-2 parts of polyether modified polydimethylsiloxane, 0.3-1 part of a defoaming agent, 1-3 parts of a dispersing agent, 1-5 parts of silver-loaded zirconium phosphate, 0.5-2 parts of an antioxidant 1010, 0.5-2 parts of a coupling agent KH-550 and 10-25 parts of propylene glycol methyl ether acetate. The raw materials are scientifically proportioned and contain various modified components, and parameters of each step are clear. The preparation method is reasonable in process, the performance of the ink is improved through multi-step modification, and the obtained ink is good in dispersity and compatibility, high in curing efficiency and excellent in comprehensive performance and has good practicability and innovativeness.

The invention discloses a beautifying essence which comprises the following components in percentage by weight: 1% of bifidus yeast fermentation liquor, 3% of boine, 2% of nicotinamide, 0.3% of gallnut extract, 1% of purslane extract, 0.3% of allantoin, 0.2% of centella asiatica extract, 0.3% of tocopherol extract, 0.5% of aesculus chinensis extract, 2% of vitamin E, 0.05% of xanthan gum, 0.05% of sodium hyaluronate, 0.2% of carbomer, 0.5% of p-hydroxyacetophenone, 0.5% of 1, 2-propylene glycol and the balance of water. The cleaning agent is prepared from, by weight, 0.5% of 1, 2-hexanediol, 5% of glycerin, 4% of PEG / PPG-14 / 7 dimethyl ether, 2.2% of glycosylglycerol, 0.2% of tetrahydroxypropyl ethylenediamine, 3% of polyglycerol-3, 0.05% of PDRN powder and the balance water. Effect evaluation test results show that the beauty essence can inhibit the activity of elastase and increase the content of type I collagen in human primary fibroblasts, so that the firming and anti-wrinkle effects are achieved.

The invention belongs to the technical field of carbon fiber composite materials, and discloses a preparation method of a modified carbon fiber composite material, KH570 modified carbon fiber, sulfydryl DOPO modified cellulose and urethane acrylate are stirred and mixed uniformly, benzoin dimethyl ether is added, and the mixture is placed under an ultraviolet lamp for irradiation reaction to obtain the modified carbon fiber composite material. The thiol DOPO modified cellulose, the alkenyl of the carbon fiber and the alkenyl of the polyurethane acrylate are subjected to thiol-ene click reaction, so that the interface bonding strength between the carbon fiber and the polyurethane acrylate is enhanced, and the tensile strength and the elongation at break of the polyurethane material are remarkably improved. The modified cellulose contains DOPO phosphaphenanthrene flame-retardant groups, phosphoric acid substances are generated through combustion, dehydration and carbonization of the cellulose and polyurethane groups can be promoted, the modified cellulose and the carbon fibers form a continuous and stable composite carbon layer, and the composite material has good flame-retardant performance.

The invention discloses an internal-acid and external-alkali type organic-inorganic hybrid molecular sieve catalyst as well as a preparation method and application thereof, and belongs to the technical field of heterogeneous catalytic materials and chemical processes. According to the catalyst, a hydrogen type Beta molecular sieve is used as an acidic inner core, polyvinylpyrrolidone (PVP) is used as an organic shell, and a unique inner-acid outer-alkali structure is formed. The preparation method comprises the following steps: hydrothermally synthesizing a hydrogen type Beta molecular sieve with a specific silica-alumina ratio, and then coating PVP through surface adsorption. The catalyst is used for catalyzing the condensation of methylal and trioxymethylene under mild conditions (40-70 DEG C and normal pressure) to prepare polyoxymethylene dimethyl ethers (DMMn). The PVP shell covers acidic sites on the outer surface of the molecular sieve to form an external neutral / weak base and internal strong acid microenvironment, so that the secondary side reaction of the product is effectively inhibited, the trioxymethylene conversion rate of more than 98% and the DMMn selectivity of more than 96% can be obtained in the reaction at 50 DEG C and normal pressure, the product distribution can be regulated and controlled, and the traditional Anderson-Schulz-Flory distribution limitation is broken through. The catalyst disclosed by the invention has the advantages of high activity, high selectivity, mild conditions and easiness in separation, and has a good industrial application prospect.

The invention discloses a small-grain mordenite molecular sieve as well as a preparation method and application thereof, a crystallization process is directionally controlled by adopting a sectional regulation and control crystallization method, so that the morphology and acid distribution of the molecular sieve are regulated and controlled, and the synthesis method is simple in process and suitable for large-scale industrial production; the grain diameter of the small-grain mordenite molecular sieve obtained by the method disclosed by the invention is 15-300nm; the B acid center of the 8-membered ring pore channel accounts for gt of the total B acid center; the catalyst is used for the carbonylation reaction of dimethyl ether, and has good activity and stability.

The utility model belongs to the technical field of dimethyl ether extraction, and particularly discloses a synthesis gas separation and purification device for dimethyl ether processing, which is used for solving the technical problems that foams generated in a rectification process have a non-directional gathering effect, and normal separation of gas and liquid phases can be influenced if a large amount of foams are gathered and adhered to the inner wall. Comprising a tower body, a bottom cover and a top cover are mounted at the bottom and the top of the tower body respectively, a plurality of baffles with through holes in the middles are mounted in the tower body at intervals, and a sieve plate is arranged between the through holes of the adjacent baffles; therefore, the defoaming assembly and the driving assembly are combined, most of foams generated by gas-liquid two phases in the dimethyl ether preparation process are eliminated, a large amount of wall-mounted foams are comprehensively eliminated, the feeding direction of synthesis gas can be changed, the reaction efficiency is improved, the foams can be eliminated from beginning to end by utilizing the double-arranged silk screen frames, and the production efficiency is improved. Foams generated in the rectification process are comprehensively eliminated, and the dimethyl ether preparation efficiency is improved.

The invention relates to the technical field of water treatment, in particular to a method for preparing a quaternized modified tannin-based organic flocculant through irradiation grafting, a product prepared through the method and application of the quaternized modified tannin-based organic flocculant. The method comprises the following steps: (1) under the irradiation of 30-60 mW / cm < 2 > of ultraviolet light, adding brominated vinyl triphenylphosphine into a mixture of tannic acid and a photoinitiator for reaction; (2) adjusting the ultraviolet intensity to 5-20 mW / cm < 2 > for reaction; (3) closing the ultraviolet reaction; and (4) precipitating the product with ethanol, filtering and washing to obtain the quaternary phosphonium modified tannin-based organic flocculant. Wherein the photoinitiator is selected from one of benzophenone and benzoin dimethyl ether. The quaternized modified tannin-based organic flocculant provided by the invention can efficiently remove algae in a water body in an environment-friendly manner, and avoids secondary pollution caused by algae cell rupture at the same time.

The invention relates to a zero-emission technology for producing power in a thermal plant using natural gas (NG) or liquefied natural gas (LNG), followed by capturing carbon dioxide (CO2) and converting it into green Dimethyl Ether (DME). The process integrates a gas-based combined cycle power plant with CO2 capture through Pressure Swing Adsorption (PSA) (106) and Monoethanolamine (MEA) purification. Captured CO2 undergoes a Reverse Water Gas Shift (RWGS) (306) reaction at temperatures above 900°C to form CO, which, along with syngas from steam methane reforming (308a, 308) at 525°C to 900°C and 25 ATA pressure, is converted into DME using a Cu / ZnO / Al2O3 catalyst at 250-300°C and 25-40 ATA. The process achieves an energy efficiency factor of 93.04%, producing 92 kg of DME per 48 kg of LNG, with a 94% greenhouse gas abatement, contributing to net-zero emissions (NZE) while generating bulk thermal power.

The invention discloses a two-phase absorbent for capturing CO2, which is characterized by being prepared from the following components in percentage by mass: 25%-30% of N-(2-ethoxyl) ethylenediamine, 0%-3% of N-aminoethyl piperazine, 0%-3% of 2-(1-ethoxyl) pyridine, 10%-13% of N, N '-diethyl ethylenediamine, 15%-20% of N, N'-diethylethylenediamine, 5%-10% of N, N '-diethylethylenediamine, 5%-10% of N, N'-diethylethylenediamine and the balance of water. The invention relates to a cleaning agent which is prepared from the following components in percentage by weight: 1 to 5 percent of N, N-diethylhydroxylamine, 1 to 5 percent of pentamethyldiethylenetriamine, 0 to 2 percent of tert-butylamine ethoxyethanol, 0 to 3 percent of 2-amino-2-methyl-propyl alcohol, 5 to 8 percent of sulfolane, 5 to 8 percent of dimethyl ether, 5 to 8 percent of p-xylene and 5 to 8 percent of n-butyl alcohol. The composition can be prepared by uniformly stirring the components. The preparation method is simple, and the prepared two-phase absorbent can improve the saturated absorption capacity, improve the desorption rate and optimize the performance of the phase change absorbent.

The invention discloses a multiplying power type electrolyte additive, electrolyte and a lithium ion battery, and belongs to the technical field of lithium ion, the multiplying power type electrolyte additive is a silane group dimethyl ether compound containing two symmetrical structures, and the general formula of the additive is # imgabs0 #; the lithium ion battery comprises a positive plate, a negative plate, an isolating membrane and the multiplying power type electrolyte. According to the invention, the dimethyl ether compound of the methoxy silane group with a symmetrical structure is used as an additive to be applied to the preparation of the lithium ion battery electrolyte. According to the present invention, the dimethyl ether compound containing the methoxy silane group with the symmetric structure is combined with the auxiliary additive so as to provide characteristics of low cell impedance, excellent battery charge-discharge and cycle performance, and high temperature performance of the cell in the high energy density battery system; the electrolyte is used for manufacturing the lithium ion battery, and the obtained battery has excellent charge-discharge performance.

The invention relates to a multifunctional tandem catalytic process for directly preparing methyl acetate / ethanol from synthesis gas. According to the process, a novel catalyst for preparing dimethyl ether from synthesis gas is prepared by adopting an impregnation method, and after the catalyst is sequentially connected with a dimethyl ether carbonylation catalyst and a hydrogenation catalyst in series, efficient directional synthesis of methyl acetate and ethanol is realized in a double-bed or three-bed sequential filling form. According to the invention, high CO conversion per pass, high methyl acetate selectivity and low acetic acid selectivity can be realized, and the problems of corrosion and difficult conversion of a subsequent hydrogenation system are effectively avoided; the multifunctional catalytic system provided by the invention is simple in preparation method and easy to realize industrial large-scale production.

The invention discloses a CuGa-S-1 catalyst for catalyzing hydrogenation of carbon dioxide to prepare dimethyl ether, an S-1 molecular sieve is used as a carrier, Cu and Ga are used as active components and are uniformly dispersed on the S-1 molecular sieve, the molar ratio of Ga to Cu is 1.0-3.0, the mass fraction of Cu is 2-10%, and the mass fraction of Ga is 2-20%. The invention also discloses a preparation method and application of the CuGa-S-1 catalyst for catalyzing hydrogenation of carbon dioxide to prepare dimethyl ether. The preparation method disclosed by the invention is simple and easy to operate, large-scale industrial production is easy to carry out, and high dimethyl ether selectivity is shown in a reaction for preparing dimethyl ether through carbon dioxide hydrogenation.

The invention relates to the technical field of cosmetics, in particular to an efficient anti-aging composition and a skin care product containing the composition. The invention discloses an efficient anti-aging composition which is prepared from the following raw materials in parts by mass: 12-15 parts of oil-based concentrated active ingredients, 25-35 parts of base collagen liquid, 15-18 parts of Ectoine, 12-16 parts of TWEEN 20 and 22-25 parts of isosorbide dimethyl ether, and the oil-based concentrated active ingredients are prepared from safflower seed oil, an extract of flowers / leaves / stems of herba lysimachiae, an extract of radix astragali membranaci, ubiquinone and vitamin E; the base collagen liquid comprises XVII type collagen, VII type collagen and IV type collagen. Aiming at the problems that an existing skin care product cannot effectively reduce skin wrinkles, improve skin compactness, reduce skin sagging and prevent skin aging for a long time, the composition disclosed by the invention realizes long-term aging resistance from epidermis to dermis, effectively reduces wrinkles, improves compactness and improves skin sagging.