181 results about "Sulfuric Acid Esters" patented technology

In order to solve the problems of poor high-temperature and low-temperature cycle performance and poor safety performance of a lithium ion battery in the prior art, the invention provides a lithium ion battery, which comprises a positive electrode, a negative electrode, a diaphragm and an electrolyte, the positive electrode comprises a positive electrode active material layer, the positive electrode active material layer comprises a positive electrode active material and an oxide solid electrolyte, the surface of at least one side of the diaphragm is coated with an oxide solid electrolyte coating, the electrolyte comprises a first additive and a second additive, the first additive comprises a fluorosulfonyl amide compound, and the second additive comprises mannitol carbonate sulfate; the lithium ion battery meets the following relational expressions: (H + X) / P is more than or equal to 0.8 and less than or equal to 8; formula 2: 0.75 < = (A + B) / (H + X) < = 20; formula 3: 0.16 < = H / X < = 6.43; formula 4: 1.25 < = A / B < = 36.

The invention discloses a fast-charging lithium ion battery electrolyte, a preparation method thereof and a lithium ion battery containing the fast-charging lithium ion battery electrolyte. The fast-charging lithium ion battery electrolyte comprises the following components: electrolyte salt, an organic solvent and an electrolyte additive, the electrolyte additive comprises a first additive and a second additive; the first additive is a multi-element sulfate ester additive, and the mass percentage of the multi-element sulfate ester additive is 0.05%-2% based on the total mass of the electrolyte being 100%. By adding the polybasic sulfate additive with a specific structure, adopting a composite solvent system and cooperating with the synergistic effect of other additives, lithium salt and other components, dual stability of positive and negative electrode interface films is realized, the electrochemical window of the electrolyte is widened, and the thermal stability and cycling stability of the electrolyte are improved; and finally, the battery has the advantages of fast charging capability, high voltage compatibility, long cycle life and high thermal safety at the same time.

The invention provides a battery and an electric device. A positive plate comprises a positive active material, and the positive active material is doped and / or coated with a lanthanum element; the surface of the diaphragm is coated with a ceramic coating; the electrolyte comprises a first solvent, a second solvent, a first additive and a second additive; the first solvent comprises a cyclic carbonate compound, the second solvent comprises a chain fluorosulfonamide compound, the first additive comprises mannitol carbonate sulfate, and the second additive comprises succinonitrile; the lanthanum element is doped / coated on the positive active material, so that the release of lattice oxygen at high voltage or high temperature can be effectively inhibited, and the exothermic reaction activity at the thermal runaway initial temperature is reduced; the first additive and the second additive in the electrolyte respectively form a compact CEI film and an SEI film with high thermal stability on the surfaces of the positive electrode and the negative electrode; the diaphragm ceramic coating provides a physical barrier, the thermal shrinkage temperature of the diaphragm is increased, and internal short circuit is prevented.

The invention relates to an algin sulfate (PMGS) patch as well as a preparation method and application thereof, and belongs to the technical field of medicines. According to the application, the fucoidan polysaccharide sulfate (PMGS) is used as a main raw material of the microneedle for the first time, the needle tip is completely composed of PMGS, the PMGS plays a role in medicine and adjuvant integration, on one hand, the PMGS is used as a needle tip matrix to provide enough mechanical strength to pierce warts and surrounding skin and is more suitable for related warts with obvious skin thickening, and on the other hand, the PMGS is diffused and released at the position where viruses are located, so that the effect of preventing and treating warts is achieved. The skin wart treatment effect is achieved by preventing virus from entering and enhancing skin immunity, compared with a previous authorized patent scheme, the problems that PMGS as macromolecular polysaccharide enters the skin and is insufficient in absorption are solved in a microneedle mode, PMGS can be directly delivered to basal layer cells where HPV is located, and fixed-point drug delivery is achieved.

The invention discloses a gymnadenia conopsea octasaccharide-decaose mixture as well as a preparation method and application thereof, and belongs to the technical field of medicines. The monosaccharide of the octasaccharide-decataccharide mixture of the gymnadenia conopsea comprises N-acetamino galactose, fucose, glucuronic acid or sugar alcohol thereof, galactose, N-acetylglucosamine, dehydrated talose and a sulfate group. The octasaccharide to decataccharide mixture of the gymnadenia conopsea disclosed by the invention can be used for remarkably prolonging the time of activating partial thromboplastin and prothrombin and effectively inhibiting endogenous and common coagulation pathways. The octasaccharide-decaose mixture of the gymnadenia conopsea can be used as a potential endogenous factor X enzyme inhibitor for preparing medicines for treating thrombotic cardiovascular diseases.

The invention discloses an electrolyte for a high-voltage fast-charge alkali metal secondary battery and a battery thereof, the electrolyte comprises a main salt, a non-aqueous solvent and an additive, the main salt is selected from a main lithium salt or a main sodium salt, the additive at least comprises a first additive shown as a structural formula (I), the electrolyte also can comprise a sulfate compound as a second additive, a lithium / sodium salt additive as a third additive and other basic additives, and the specific structure is shown in the specification. Particularly, the electrolyte is stored for more than or equal to 12 hours at the temperature of-30 to 60 DEG C and then is injected. When the electrolyte is applied to the high-voltage fast-charge alkali metal secondary battery, not only can the high-temperature cycle performance be further improved, but also the high-temperature storage performance can be improved, the battery impedance can be reduced, the fast-charge performance can be improved, and both the fast-charge performance and the high-temperature performance under high voltage can be realized.

The invention discloses an electrolyte and a lithium battery, and additives of the electrolyte comprise a compound as shown in a structural formula 1, a cyclic sulfate compound and a sultone compound, the proportions of the compound as shown in the structural formula 1, the cyclic sulfate compound and the sultone compound in the electrolyte are awt%, bwt% and cwt% respectively, 2.5 b-a is more than or equal to-0.5 and less than or equal to 4, and 2a + c is more than or equal to 5 and less than or equal to 8. In the design, the compound shown in the structural formula 1 can form stable interfacial films on the surfaces of the positive electrode and the negative electrode, oxidative decomposition of an electrolyte at high temperature is reduced, consumption of the electrolyte is inhibited, the high-temperature cycle performance is improved, and the cyclic sulfate compound can reduce film-forming impedance and improve gram volume exertion; the sultone compound can improve the high-temperature storage performance. Therefore, the high-temperature cycle and high-temperature nesting performance of the lithium battery is effectively improved by adjusting the ratio of the compound shown in the structural formula 1, the cyclic sulfate compound and the sultone compound.

An electrolyte solution and a sodium-ion battery. The electrolyte solution comprises a sodium salt, an additive, and an organic solvent, wherein the sodium salt comprises sodium hexafluorophosphate and sodium bis(fluorosulfonyl)imide, and the additive comprises pentaerythritol bicyclic sulfate; and the electrolyte solution comprises: in percentage by mass, 2-15 wt% of sodium hexafluorophosphate, 0.1-20 wt% of sodium bis(fluorosulfonyl)imide, 0.1-5 wt% of pentaerythritol bicyclic sulfate, and the balance being an organic solvent. The electrolyte solution has relatively strong stability in a room-temperature or high-temperature environment, so that stringent environmental requirements in stages of the preparation, transportation, and storage of electrolyte solutions are reduced to a certain extent, the production cost can be effectively controlled, and when the electrolyte solution is applied to a sodium-ion battery, the cycling stability of the battery can be improved.

The invention belongs to the field of textile dyeing and finishing, and relates to a dyeing method capable of regulating and controlling in-situ assembly of dye molecules through cellulose fiber graft modification. The dyeing method comprises the following steps: soaking a cellulosic fiber textile in a 4-beta-hydroxyethylsulfonyl sulfate aniline-2-sulfonic acid aqueous solution for reaction, washing with water, drying, soaking in a hydrochloric acid aqueous solution, adding a sodium nitrite aqueous solution for reaction, adding urea, washing with water, and drying to obtain the cellulosic fiber textile. Soaking in a coupling component aqueous solution containing a coupling component, sodium hydroxide and sodium carbonate for reaction, alternately washing with hot water and cold water, and drying to obtain the dyed textile. The dyeing method is mild in condition, dye hydrolysis is avoided, the dye uptake and the dyeing fastness are improved, and the dye utilization rate is high; high temperature and a large amount of inorganic salt or auxiliaries are not needed, the dye is directly generated and fixed in the fiber, energy consumption is remarkably reduced, and waste water treatment pressure is reduced.

To provide a new method for manufacturing a fiber cellulose fiber using a pulp having high total light transmittance of an aqueous dispersion.SOLUTION: A method for manufacturing a fiber cellulose fiber includes a chemical treatment step of bringing a pulp with a reaction liquid containing a sulfamic acid and urea, reacting the mixture at 120°C to 180°C, and thereby substituting at least a part of a hydroxyl group of cellulose constituting the pulp with a sulfate group, and a fining treatment step of fining the pulp after the chemical treatment step, and obtaining a fine cellulose fiber, wherein in the reaction liquid, a blended amount of the sulfamic acid is 10 mmol to 48 mmol per 1 g of the pulp, a molar ratio S:U of the sulfamic acid (S) and the urea (U) is 1:0.4 to 1:1.61, and the pulp after the chemical treatment step has a cellulose I type crystal structure, and has a degree of crystallization of 76% or less and total light transmittance of a dispersion liquid dispersed in water at solid content concentration of 1 mass% of 80% or more.SELECTED DRAWING: None

The present application relates to an electrolyte additive. The electrolyte additive contains a sulfate compound; and the chemical formula of the sulfate compound is: (I), wherein R1 is selected from a halogen atom, and R2, R3, and R4 are each independently selected from one or more of a hydrogen atom, a halogen atom, C1-C6 alkyl, and C1-C6 fluoroalkyl.

The invention relates to the technical field of medicines, and provides sea sodium polysaccharide, a preparation method and application thereof, and an anticoagulant and / or antithrombotic drug of a targeted endogenous coagulation pathway. The sea sodium polysaccharide provided by the invention is fucosylated chondroitin sulfate polysaccharide, the weight-average molecular weight is 90000-130000, the molar ratio of glucuronic acid to N-acetylgalactosamine to fucose is 1: (0.8-1.2): (0.5-0.8), and the mass percentage of sulfate group is 25-40%. The sea sodium polysaccharide provided by the invention can act on a terminal rate-limiting enzyme (iFXase) in an endogenous blood coagulation pathway in a targeting manner, is not obvious in effect on blood coagulation factors in other blood coagulation pathways, realizes the effects of anticoagulation and no bleeding, can be widely applied to acute-stage and recovery-stage treatment of cerebral arterial thrombosis, and has a wide application prospect. The problem of safety of anticoagulant and antithrombotic drugs used by clinical cerebral arterial thrombosis patients is solved, and a new field of research and development of targeted endogenous coagulation pathway rate-limiting enzyme anticoagulant drugs is developed.

A secondary battery electrolyte, comprising a composite electrolyte salt. The composite electrolyte salt comprises lithium hexafluorophosphate, lithium bis(fluorosulfonyl)imide and a thio-based lithium salt. The thio-based lithium salt comprises a substituted sulfate (R 1-SO 3-Li) and / or a lithium salt with a sulfate ester structure (R 2-O-SO 3-Li). LiPF 6, the thio-based lithium salt and LiFSI are matched and used together. LiFSI has better hydrolysis stability, relatively good thermal stability and higher lithium migration capability, and has an obvious effect on improving the dynamics and high-temperature performance of the battery. The lithium sulfate and lithium salt with a sulfate ester structure also have relatively high lithium migration capability, and also, the S, O-rich anionic groups, after film forming, have a relatively good effect on improving the components of the SEI film and reducing film impedance, so that the dynamic performance and the high-temperature performance of the battery are improved.

Provided is a powder detergent composition which achieves cleanability, particularly cleanability and rinsability of heat-modified oil stains or sebum stains, has a good cleaning sensation, and is such that sliminess is suppressed.　This powder detergent composition contains 12% by mass or less of component (A) described below, and 3-10% by mass of component (B) described below, wherein the mass ratio (a1) / (A) of the content of component (a1) described below to the content of component (A) is 0.16 to 0.70, and the mass ratio (a1) / (B) of the content of component (a1) to the content of component (B) is 0.2 to 2.0. Component (A): an anionic surfactant containing component (a1) described below Component (a1): a specific sulfuric acid ester, or a salt thereof, having an aliphatic hydrocarbon group and a polyalkyleneoxy group

The invention relates to a non-aqueous electrolyte and a lithium secondary battery. In order to solve the problem that a lithium secondary battery cannot give consideration to high and low temperature circulation and rate capability, a first additive, a second additive and a third additive are added into an electrolyte, the first additive is # imgabs0; the second additive is selected from one or more of a fluoro boric acid ester compound, a fluoro carboxylic acid ester compound, a fluoro chain carbonate ester compound, a fluoro phosphate ester compound, a fluoro phosphite ester compound and a fluoro chain sulfonate ester compound; the third additive is selected from one or more of double-bond-containing cyclic carbonate, halogen-containing cyclic carbonate, cyclic sulfonate, sulfate, sulfite, anhydride, a benzene compound, a nitrile compound, halogen-free phosphate, halogen-free phosphite, a halogen-free boron compound, an amine compound, a silicon-containing compound and a six-membered heterocyclic compound; through the synergistic effect of the three additives, the cycle performance and the rate performance of the lithium secondary battery at high and low temperatures are improved.

The present application relates to the technical field of medicine, and provides a kind of haena polysaccharide and its preparation method and application and target endogenous coagulation pathway anticoagulant and / or antithrombotic drug.The haena polysaccharide provided by the present application is fucosylated chondroitin sulfate polysaccharide, the weight average molecular weight is 9-13 million, the molar ratio of glucuronic acid, N-acetylglucosamine and fucose is 1:0.8-1.2:0.5-0.8, and the mass percentage content of sulfate group is 25-40%.The haena polysaccharide provided by the present application can target endogenous coagulation pathway terminal rate-limiting enzyme (iFXase), and has no obvious effect on coagulation factors in other coagulation pathways, realizes the effect of anticoagulation and non-hemorrhage, and can be widely applied in acute and recovery period treatment of ischemic stroke, solves the safety problem of using anticoagulant and antithrombotic drug for clinical ischemic stroke patients, and opens up a new field of research and development of target endogenous coagulation pathway rate-limiting enzyme anticoagulant drug.

The invention discloses a method for preparing mildew-proof and insect-resistant wood by adopting a sulfuryl fluoride modification strategy and application of the mildew-proof and insect-resistant wood, belongs to the field of wood chemical modification, and aims to solve the problems that mildew-proof and insect-resistant active ingredients are easy to migrate and lose, the environmental toxicity is high and the like in an existing wood protection method. According to the method, sulfuryl fluoride (SO2F2) is utilized to react with phenolic hydroxyl groups in wood in the presence of alkali to generate covalent linkage of aryl fluorosulfate (Ar-O-SO2F), so that wood modification is realized. The reaction is simple and feasible, and can be carried out under mild conditions. The shape of the wood modified through sulfuryl fluoride is kept, and the wood shows stable performance in the aspects of mildew prevention, insect resistance and the like. The modification method does not depend on transferable effective components, can provide a lasting protection effect for wood, and has a wide application prospect.

The invention discloses a production method for improving the ring opening rate of monascus milovastatin, and belongs to the technical field of monascus rice production. According to the method, a monascus purpureus high-yield strain is selected and inoculated into a solid indica rice matrix containing a specific additive for fermentation after spore activation, and the matrix comprises 1, 5-p-coumaroylquinic acid, sodium acetate, sodium citrate, a thermally modified soybean protein isolate polysaccharide sulfate compound and other components. Wherein sodium acetate and sodium citrate can serve as short-chain fatty acid precursors, the activity of closed-loop lactonase is inhibited through pH regulation, and generation of lactone type products is reduced; 1, 5-p-coumaroylquinic acid activates the expression of a polyketide synthase gene cluster, so that the synthesis flux of the Monacolin K with an open-loop structure is improved; nicotinamide ribose enhances the electron transfer efficiency of glycolysis and TCA circulation, provides sufficient ATP for polyketone synthesis, and promotes synthesis of Monacolin K. The compound further strengthens the synthesis flux of secondary metabolites by changing the form of hyphae and continuously releasing a nitrogen / carbon source, and promotes intracellular products to be transferred to extracellular.

The application discloses a short-process printing process of polyester-cotton blended fabric, which comprises screen printing by using active disperse dyes containing double active groups and steaming by using alcohol vapor; the double active groups include hydroxyethyl sulfone sulfate group and CH2CH(OH)CH2X (X is Br or Cl); the CH2CH(OH)CH2X can be converted into an epoxy group under alkaline conditions and can react with the alcohol vapor during the steaming process to realize the cross-linking between dye molecules, so that the effects of improving the fixation efficiency and shortening the process flow are achieved, and then the printed fabric with high color depth and high color fastness is obtained.

The invention discloses a lithium ion battery electrolyte used under the condition of-30 DEG C to-70 DEG C and a preparation method and application thereof, the lithium ion battery electrolyte comprises a lithium salt, an organic solvent and an additive, and the organic solvent is a sulfite solvent or a mixture of the sulfite solvent and a carbonic ester solvent. According to the lithium ion battery electrolyte provided by the invention, sulfite is selected as the solvent of the electrolyte, the electrochemical performance of the lithium ion battery in a low-temperature environment is comprehensively improved, and the lithium ion battery electrolyte has the characteristics of low freezing point, high low-temperature conductivity and good cycling stability.

The invention provides sulfated monosialic acid ganglioside as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. The structural formula of the ganglioside is 3GalNAc-4 (NeuAcS2 alpha2-3) Galbeta1-Cer, and the structural formula of the ganglioside is as shown in the specification. The sulfated monosialic acid ganglioside SJ-1 prepared by the invention has good activity, can be used for preparing medicines for promoting nerve regeneration or nourishing brain cells, and has a good application prospect.

The invention relates to the technical field of reverse osmosis (RO) membranes, in particular to a ro membrane filter element and a production process thereof. The invention relates to a ro membrane filter element, which is an aromatic polyamide membrane with a sulfated polyglycidyl ether-polydopamine-zwitterionic polymer coating deposited on the surface. The ro membrane provided by the invention has excellent anti-pollution performance and durability.

The present disclosure provides a battery, which comprises: a positive electrode sheet, a negative electrode sheet, a separator, and an electrolyte, wherein the negative electrode sheet has a porosity of φ in %; the separator has a thickness of t in μm and a pore size of R in μm; the ratio of the total mass of the electrolyte to the discharge capacity of the battery is N in g / Ah. The electrolyte comprises an electrolyte additive, and the electrolyte additive comprises a sulfate compound and a first lithium salt, wherein the first lithium salt includes an oxalate-containing lithium salt, the sulfate compound has a structure represented by Formula I, and the mass fraction of the sulfate compound in the electrolyte is C in %. The battery satisfies the expression A, expression A.

The embodiment of the invention provides a single battery of a lithium ion battery, the lithium ion battery and a power utilization device, the single battery comprises a positive pole piece, the positive pole piece comprises a positive current collector and a positive active material layer arranged on at least one side surface of the positive current collector, and the positive active material layer comprises lithium-containing phosphate; the negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer arranged on the surface of at least one side of the negative electrode current collector, the negative electrode active material layer comprises graphite, and the average particle size range A of the graphite is greater than or equal to 1 mu m and less than or equal to 20 mu m; the electrolyte comprises a carboxylic ester solvent, the carbon content B of the carboxylic ester solvent is larger than or equal to 40% and smaller than or equal to 60%, the electrolyte comprises an additive, and the additive comprises at least one of a sulfate compound and a sulfonate compound. The battery monomer has excellent quick charging performance.

The invention discloses an electrolyte additive and a non-aqueous electrolyte and a secondary battery thereof, the electrolyte additive comprises a first additive, a second additive and a third additive, the first additive is a lithium salt containing a fluorine sulfonyl structure; the second additive is a compound containing a sulfonyl structure; the third additive is a compound containing two or more sulfate ring structural units. Through the synergistic effect of the multi-component additives, an interfacial film with differentiated characteristics can be constructed on an electrode interface in situ, so that the high-voltage cycling stability is improved, the side reaction of the interface is reduced, the low-temperature dynamics is optimized, and the rate capability is improved. The invention further discloses a non-aqueous electrolyte containing the electrolyte additive and a secondary battery adopting the non-aqueous electrolyte.

The invention discloses a synthesis method of a sulfite compound, which comprises the following steps: by taking an alcohol compound as a raw material, sulfur hexafluoride as a sulfinylation reagent and an organic solvent as a reaction solvent, carrying out illumination reaction in the presence of a photocatalyst and alkali to obtain the sulfite compound, the alcohol compound is monohydric alcohol or dihydric alcohol; when the monohydric alcohol is secondary alcohol, a benzoic acid compound is added as an additive. The invention discloses a synthesis method of a novel sulfite compound, which comprises the following steps: in the presence of a photocatalyst and alkali, reducing SF6 by utilizing an illumination condition, and reacting an SF6 decomposition product with alcohol to form a sulfite product; according to the method, the greenhouse gas SF6 is effectively activated and utilized, the SF6 is turned into wealth, the required raw materials are simple and easy to obtain, the reaction conditions are simple and convenient, the method is green and energy-saving, and the method has high application value.

The invention provides an electrolyte and a lithium ion battery. The electrolyte comprises an organic solvent, LiPF6 and an additive, wherein the additive comprises vinyltrimethoxysilane, pyridinium propane sulfonate and bis (trimethylsilyl) sulfate. The vinyl trimethoxy silane additive can form an organic polymer containing unsaturated bonds and a cross polymerization network containing Si-O-Si bonds on the surface of a silicon negative electrode, so that the mechanical strength and flexibility of an SEI film are improved. The pyridinium propane sulfonate and the bis (trimethylsilyl) sulfate can form a small amount of sulfur-containing compound of a positive electrode protection film, and can also form an unstable solid electrolyte passivation film on the surface of a negative electrode and a sulfur-containing compound which is easy to decompose on the surface of the positive electrode at the same time. Through the synergistic effect of the three additives, the cycle performance and high and low temperature performance of the battery are effectively improved, and the service life of the battery is prolonged.

The invention provides a fucosan sulfate compound as well as a preparation method and application thereof, and belongs to the technical field of organic chemistry and medicinal chemistry. The anticoagulant activity of the fucosan sulfate compound is high, the anticoagulant activity of the compound 29, the anticoagulant activity of the compound 30, the anticoagulant activity of the compound 37 and the anticoagulant activity of the compound 58 are high, EC2.0 * multiplied by APTT reaches 13.6 mu g / mL, 14.5 mu g / mL, 16.4 mu g / mL and 12.9 mu g / mL respectively, and the activity of the EC2.0 * multiplied by APTT is close to that of an anticoagulant drug enoxaparin commonly used in clinic. However, different from enoxaparin acting on a common blood coagulation pathway, safety problems such as bleeding, allergy and gastrointestinal tract side reactions exist, and fucoidan only acts on an endogenous blood coagulation pathway, so that the risk of bleeding is greatly reduced from the mechanism. In addition, the fucoidan is derived from invertebrates and cannot be degraded by enzymes in mammals, so that oral administration is expected to be realized, and the compliance of patients is greatly improved.

The invention discloses a wide-temperature-range lithium battery electrolyte and a preparation method thereof, relates to the technical field of lithium battery electrolytes, and aims at low-temperature quick charge and high-temperature full charge storage. The electrolyte comprises a component A to a component E, wherein the component A is linear carbonic ester and low-condensation-point carboxylic ester; the component B is a nitrile solvent and a phosphate solvent; the component C is a multi-lithium salt system; the component D is ethylene sulfite; the component E is an acid-triggered cross-linking self-repairing interface reinforcing agent and comprises a multifunctional epoxy unit, latent polyol capable of being triggered by acidic species to release hydroxyl and a boric acid ester dynamic modulation unit; the preparation method comprises the following steps: controlling moisture in an inert atmosphere, preparing a solvent mother solution, dissolving salt step by step, sequentially adding the component D and the component E, filtering and sealing; the electrolyte maintains low viscosity and ion transmission at low temperature, and reduces the risk of lithium precipitation; and gas production and interface degradation are inhibited in a high-temperature charged state, bulk phase thickening is avoided, and the circulation and storage stability is improved.

This invention belongs to the field of surfactant preparation technology, specifically relating to a method for preparing a sulfate ester salt type surfactant. The method includes the following steps: olefins and concentrated sulfuric acid are separately introduced into a microchannel reactor equipped with a catalyst section and mixed and reacted under ultrasonic conditions to obtain an intermediate product; an aqueous solution of NaOH or KOH is added to the intermediate product, the temperature is raised to 90-105℃, and the mixture is stirred and refluxed for 1-2 hours to obtain the sulfate ester salt type surfactant. This invention combines a microchannel reactor with fine chemical synthesis and successfully synthesizes secondary alkyl sulfates. By accelerating the reaction with a catalyst and ultrasound, increasing the phase contact area, and controlling the reaction temperature at a low level, the degree of olefin sulfation is greatly improved, thereby increasing the yield of secondary alkyl sulfates. The method is safe, environmentally friendly, easy to operate, simple in process, and easy to control. It is expected that production can be scaled up to industrial scale through array arrangement.