33results about "Peroxy compound preparation" patented technology

ELIMINATION OF IMPURITIES WITHIN AN ORGANIC PEROXIDE The present invention relates to the use of a zeolitic adsorbent material, to purify organic peroxides, and more particularly to eliminate the impurities present in these compositions of organic peroxides.

This invention belongs to the field of acyclic compound synthesis technology, specifically relating to a production process for 1,1-dimethyl-3-hydroxybutyl hydrogen peroxide. The production process includes the following steps: (1) preparing a metal salt solution A; preparing a solution B from 1,3,5-tris(4-carboxyphenyl)benzene; oxidizing carbon nanotubes to form carbon oxide nanotubes, and then preparing a suspension from molecular sieves, metal oxides, and carbon oxide nanotubes; (2) adding solution B to the suspension, continuing to add solution A for reaction, and after post-treatment, obtaining a catalyst precursor; (3) calcining the catalyst precursor in an inert atmosphere to obtain a catalyst; (4) activating the catalyst to catalyze the reaction of 2-methyl-2,4-pentanediol and hydrogen peroxide to obtain 1,1-dimethyl-3-hydroxybutyl hydrogen peroxide. This invention further improves the selectivity and yield of 1,1-dimethyl-3-hydroxybutyl hydrogen peroxide by designing the catalyst.

The application discloses a preparation method of dibenzoyl peroxide, and relates to the technical field of organic peroxide preparation. The preparation method comprises the following steps: preparing dibenzoyl peroxide crude product and initial synthesis obtained recycling mother liquor; taking out two parts from the initial synthesis obtained recycling mother liquor, and reacting with a sodium hydroxide solution, hydrogen peroxide, a surfactant aqueous solution and benzoyl chloride; at least the benzoyl chloride is contained in the multiple materials, and the multiple materials are pre-mixed by a pre-mixer; heat preservation reaction is carried out, and after the reaction is completed, centrifugal separation is carried out to obtain the dibenzoyl peroxide crude product and second synthesis obtained recycling mother liquor; and the dibenzoyl peroxide crude product is sequentially subjected to water washing and solid-liquid separation to obtain a finished product. The pre-mixer is used to realize instant super-uniform mixing of the materials, the reaction is more uniform, the product is fine and small in particle size, the particle size distribution is uniform, the reaction yield is high, the amount of water used for subsequent washing is reduced, the recycling of the mother liquor reduces the discharge amount of high-salinity organic waste liquid from the source, and the preparation cost is reduced.

The present disclosure relates to organic peroxide formulation comprising at least one organic peroxide; and at least one unsaturated scorch retarder having the structure of general formula (I): wherein, R1 is selected from OH, O-R5, or a saturated or unsaturated, linear, branched, or cyclic C1 to C8 alkyl group; R2 is on each occurrence independently selected from H or a saturated or unsaturated, linear or branched C1 to C8 alkyl group; R3 is on each occurrence independently selected from H, O-R6, or a saturated or unsaturated, linear or branched C1 to C8 alkyl group; R4 is on each occurrence independently selected from OH, O-R6, or a saturated or unsaturated, linear or branched C1 to C8 alkyl group; R5 is selected from a saturated or unsaturated, linear or branched C1 to C8 alkyl group or -[CH2]n-OCOCR4CR2R3; R6 is on each occurrence independently selected from a saturated or unsaturated, linear or branched C1 to C8 alkyl group; and n is from 2-8, with the proviso that one but not both of R2 and R3 are H, or wherein R1 and R2 are joined to form a 5, 6, or 7 membered ring, said ring being formed of atoms selected from C, O, and S and containing one or two carbon-carbon double bonds and one or two carbonyl groups, said ring being optionally substituted with one or more saturated or unsaturated, linear or branched C1 to C8 alkyl groups; R3 is H; and R4 and R6 are as described above, or wherein R3 and R4 are joined to form a 5, 6, or 7 membered ring, said ring being formed of atoms selected from C, O, and S and containing one or two carbon-carbon double bonds, said ring optionally substituted with one or more saturated or unsaturated, linear or branched C1 to C8 alkyl groups; R2 is H; and R1, R5, R6 and n are as described above.

The present invention relates to the use of a zeolitic adsorbent material for purifying organic peroxides, and more particularly for removing impurities present in these organic peroxide compositions.

The present application relates to the chemical technology field, disclose a kind of preparation method of anhydrous peroxy acid product and the preparation method of caprolactone.The preparation method of anhydrous peroxy acid product includes the following steps: (1) in the presence of homogeneous acidic catalyst, hydrogen peroxide is reacted with organic acid, then the reaction product is divided into water phase and peroxy acid phase;(2) the homogeneous acidic catalyst in the peroxy acid phase is removed.The preparation method of caprolactone includes: the anhydrous peroxy acid product is oxidized with cyclohexanone.The method can catalyze the synthesis of peroxy acid with homogeneous acidic catalyst, can keep high synthesis efficiency of peroxy acid, and by removing homogeneous acidic catalyst from peroxy acid product, the refined anhydrous oxygen acid product is used for oxidizing cyclohexanone to prepare caprolactone, which can improve the selectivity and yield of caprolactone.

The application discloses a metal single-atom composite catalyst and a preparation method and application thereof. The metal single-atom composite catalyst comprises a core-shell molecular sieve and an active component; wherein the core-shell molecular sieve is a ZSM-23 molecular sieve as a core and a mesoporous silica as a shell; and the active component is a Fe-N-C species. The metal single-atom composite catalyst provided by the application is applied to a reaction of preparing C1 liquid products by low-temperature oxidation of methane, and can realize direct oxidation of methane to prepare C1 liquid products under low-temperature conditions below 80 DEG C, and has outstanding catalytic activity, selectivity and good stability.

Peroxyhydroxycarboxylic acid forming compositions and methods for forming peroxyhydroxycarboxylic acids, preferably in situ, using the peroxyhydroxycarboxylic acid forming compositions are disclosed. Methods of using the peroxyhydroxycarboxylic acids, including for treating a surface or a target in need of antimicrobial or sanitizing treatment are also disclosed. Particular applications of using odor-free, low volatility peroxyhydroxycarboxylic acid sanitizers for direct food contact are disclosed.

This invention provides a method for separating residual peroxides from epoxidized soybean oil. The method involves using a superheated, low-boiling-point stripping agent to react with the peroxide-containing epoxidized soybean oil solution in a stripping tower for gas-liquid mass transfer. During this process, the peroxides in the epoxidized soybean oil are rapidly vaporized and separated. The vaporized peroxide-containing vapor is within a safe combustion range and is further separated after condensation, allowing for the recycling of the peroxides. This method not only efficiently removes residual peroxides from epoxidized soybean oil but also ensures that the epoxy value of the obtained epoxidized soybean oil remains essentially unchanged (the difference is less than 0.02).

This invention belongs to the field of acyclic compound technology, specifically relating to a method for preparing tert-amyl peroxide. A tert-amyl hydrogen peroxide aqueous solution is added to a solvent and stirred to obtain a mixed solution. Under stirring conditions, p-toluenesulfonic acid and ferric phosphide are added sequentially to the mixed solution. After the addition is complete, stirring continues to produce reaction solution I. Under stirring conditions, acetic anhydride is added to reaction solution I. After the addition is complete, stirring continues to produce reaction solution II. A washing solution is added to reaction solution II, and the mixture is stirred and washed, then separated to obtain crude tert-amyl peroxide. The crude tert-amyl peroxide is washed, dried, and the solvent is removed to obtain tert-amyl peroxide. This invention avoids the problems of large amounts of hydrochloric acid produced by traditional acyl chloride methods and the corrosiveness caused by using sulfuric acid as a catalyst. Furthermore, ferric phosphide is magnetic, allowing for recycling through magnetic separation after the reaction. p-Toluenesulfonic acid can be regenerated through ion exchange resin, significantly reducing production costs.

This application discloses an organic solid catalyst, its preparation method, and its application, comprising repeating units with the structure shown in Formula I. The organic solid catalyst has a weight-average molecular weight of 1000–100000 and a porous structure. Using a porous organic polymer as a framework, an N-hydroxyphthalimide component is introduced during the synthesis process, giving the catalyst the properties of free radical generation and chemical bond activation. This porous organic solid catalyst can efficiently catalyze the peroxidation of diisopropylbenzene. Compared with traditional free radical catalysts, this catalyst exhibits excellent catalytic activity, low dosage, easy recovery, good thermal stability, and long service life. In the synthesis of 1,4-bis(2-hydroperoxypropane-2-yl)benzene, the conversion rate of diisopropylbenzene reaches up to 90%, and the selectivity for 1,4-bis(2-hydroperoxypropane-2-yl)benzene is over 90%.

The present application belongs to the technical field of organic synthesis, and particularly relates to a method and system for preparing diisopropyl peroxydicarbonate based on a micro-channel reactor. The present application uses a heart-shaped micro-channel reactor, pumps raw material potassium hydroxide solution and hydrogen peroxide solution from the inlet of the first piece, and pumps raw material isopropyl chloroformate from the inlet of the fourth piece, thereby realizing safe production in the preparation process of diisopropyl peroxydicarbonate, stable operation of the reaction, a substantial reduction in reaction time, accurate control of reaction temperature by a high-low temperature all-in-one machine, timely removal of heat, reduction in side reactions, a substantial increase in product yield, and finally obtaining a product with a yield of 99.5%, realizing source reduction in the preparation process, a reduction in energy consumption and raw material consumption per unit product, and fully meeting the strategic orientation of national green chemical industry and clean production. Meanwhile, the method of the present application can significantly reduce production cost, fill in the technical gap, enhance market competitiveness, and can be widely promoted.

An integrated process for producing bisphenol A, the process including separating a first stream including acetone and phenol to provide a second stream including acetone and a third stream including phenol; and reacting acetone present in the second stream and phenol present in the third stream to produce a product stream including the bisphenol A and a recycle stream.

The application discloses a catalyst for catalyzing and oxidizing cyclohexylbenzene and a preparation method and application thereof. a M b O x , the N is Co or Mn, the M is alkali metal or alkaline earth metal, wherein a:b = 1-10, the x is the number of oxygen atoms required to meet the oxidation state of the metal elements N and M. The catalyst has good catalytic performance when catalyzing and oxidizing cyclohexylbenzene, is easy to separate, can be recycled, the preparation method is simple, the price is low, and the catalyst has industrialization prospects.

The application discloses a metal single-atom molecular sieve composite catalyst and a preparation method and application thereof. The metal single-atom molecular sieve composite catalyst comprises a molecular sieve and an active component; the molecular sieve is ZSM-23 molecular sieve; and the active component is an Fe-N-C species. The metal single-atom molecular sieve composite catalyst provided by the application is applied to a reaction of methane low-temperature oxidation for preparing C1 liquid products, and can realize direct oxidation of methane for preparing C1 liquid products under low-temperature conditions below 80 DEG C, and has outstanding catalytic activity, selectivity and good stability.

The present disclosure provides a catalyst for the production of percarboxylic acids which includes a co-catalyst 1 being either a transition metal oxide or carbonaceous compound and a second co-catalyst 2, distinct from co-catalyst 1 and being comprised of at least one transition metal, transition metal oxide, transition metal carbide or transition metal nitride. The combination of these co-catalysts provides the necessary kinds of catalytic active sites for both the chemisorption and activation of formic acid as well as active sites for the generation of surface active oxygen species. The combination of these co-catalyst materials results in the synergistic benefits of enhancement in catalytic activity for the production of the peracid as well as improved catalyst stability.

The application relates to the field of di-tert-butyl peroxide preparation, and particularly discloses a micro-reaction equipment and method for preparing di-tert-butyl peroxide, which comprises a body provided with a reaction channel, the body is stacked by multiple groups of plates, the multiple groups of plates are sequentially a first layer plate, a second layer plate, a third layer plate and a fourth layer plate from top to bottom, the reaction channel is formed between the second layer plate and the third layer plate, the reaction channel is provided with a feeding port and a discharging port on the two sides respectively, and the feeding port and the discharging port are respectively arranged at the two ends of the third layer plate; the reaction channel is respectively provided with a mixing area and a reaction area close to the feeding port and the discharging port, the reaction area is provided with a heat conduction block, the heat conduction block is integrally arranged with the second layer plate, and the heat conduction block extends into the reaction channel. The application forms a passing area through the metal heat conduction block and the reaction channel, combines the internal S-shaped cooling cavity and the external radiator linkage, realizes accurate temperature control of the reaction area, avoids the risk of over-temperature, and guarantees that the reaction is safely and stably carried out.

This invention belongs to the field of peroxide production technology, specifically relating to a continuous production apparatus and method for lauroyl peroxide. The continuous production apparatus for lauroyl peroxide includes a primary reactor, to which a secondary reactor, a tertiary reactor, and a filter tank are sequentially connected. Each of the primary, secondary, and tertiary reactors is equipped with a stirrer, with a spiral plate threaded onto its upper part. A motor is connected to the top of the stirrer. A conveyor belt is installed inside the filter tank, and a mother liquor outlet is located in the center of the bottom plate. The bottom plates on both sides of the mother liquor outlet are inclined. A primary washing tank, a secondary washing tank, and a tertiary washing tank are sequentially connected to the filter tank. Each of the primary, secondary, and tertiary washing tanks is equipped with a filter screen and a sprayer. This invention employs a multi-reactor series continuous production process, resulting in higher production efficiency and more stable operation.

This invention belongs to the field of organic compound production technology, specifically relating to a method for preparing 1,1,3,3-tetramethylbutyl peroxide, comprising the following steps: S1, adding 2,4,4-trimethyl-2-pentanol to cooled sulfuric acid, then adding an aqueous solution of hydrogen peroxide and stirring to initiate a preliminary reaction, followed by adding a modified resin catalyst to continue the reaction, separating the organic phase after the reaction, washing and drying the organic phase to obtain 1,1,3,3-tetramethylbutyl hydrogen peroxide; S2, under stirring conditions, adding an alkaline solution dropwise to the 1,1,3,3-tetramethylbutyl hydrogen peroxide to initiate a reaction, followed by adding trimethylacetyl chloride to initiate an acylation reaction, continuing the acylation reaction after the addition is complete, separating the organic phase after the reaction, washing the organic phase to obtain 1,1,3,3-tetramethylbutyl peroxide. This invention employs a one-pot method for preparation and uses a modified resin catalyst, thereby improving the conversion rate.

The utility model relates to the technical field of chemical production, concretely relates to a cumene hydroperoxide concentration and decoloration system, including primary flash tank, the primary flash tank top has the secondary flash tank through pipeline connection, the primary flash tank bottom has the light heavy component collection jar through pipeline connection, the secondary flash tank top has the light heavy component collection jar through pipeline connection, the secondary flash tank bottom has the tertiary flash tank through pipeline connection, the tertiary flash tank top has the light heavy component collection jar through pipeline connection, the light heavy component collection jar top is connected with vacuum unit, the utility model discloses through multistage flash and vacuum low temperature operation, has realized the efficient decoloration and concentration of CHP, has given consideration to safety, environmental protection and economy, has improved the product quality of downstream ABS resin significantly, has solved the key problem that the product yellowing of chromaticity is out of limit in traditional craft.

The application relates to a preparation method of 4-(2-hydroxy-2-propyl) cumene hydrogen peroxide, which comprises carrying out an oxidation reaction on 4-isopropyl-alpha,alpha-dimethyl benzyl alcohol and an oxygen-containing gas in a nitrile solvent in the presence of a catalyst and an initiator, wherein the catalyst is selected from one or more of benzene dicarboximide compounds, and the initiator is selected from one or more of azo compounds. The preparation method provided by the application overcomes the problems of slow reaction speed, low reaction conversion rate and low product p-HHP yield in the prior art, and has the characteristics of easy availability of raw materials, high yield, cleanness and environmental protection, mild reaction condition and easy industrialization.

The present application relates to the technical field of fine chemical equipment and to a bubble column reactor and method for preparing a naphthoic acid compound. The bubble column reactor comprises: a column body in which a reaction chamber is provided; a gas distributor at least partially arranged in the reaction chamber, wherein the section of the gas distributor that is located inside the reaction chamber is provided with at least one first through hole in communication with the reaction chamber, and the axis of the first through hole forms an acute angle with an outer surface of the gas distributor or a tangent line at the outer surface of the gas distributor, so that a gas blown out of the gas distributor drives a liquid to flow and prolong the suspension time of solids in the liquid; and an air pump system configured to be in communication with the gas distributor and supply the gas. During reaction, a liquid containing a solid catalyst is injected into the reaction chamber, and the liquid is guided by means of second through holes on the gas distributor, thereby increasing the suspension time of the solid catalyst in the liquid, thus enhancing the mass transfer effect.

This invention provides a method and system for producing cyclohexyl hydrogen peroxide by cyclohexane oxidation. The method includes the following steps: reacting cyclohexane with an oxygen-containing gas containing CO2 to obtain a material containing cyclohexyl hydrogen peroxide. The method of this invention improves the yield and selectivity of cyclohexyl hydrogen peroxide by reacting the feed cyclohexane with an oxygen-containing gas containing CO2, reduces production costs, requires less equipment investment, and has a simple operation process. It can be used in the continuous industrial production of cyclohexane to cyclohexyl hydrogen peroxide via air oxidation.

This invention discloses a method for preparing an Eu / WO3 catalyst and its application in the one-step photosynthesis of urea peroxide. The preparation method includes the following steps: 1) synthesizing WO3 nanosheets using a hydrothermal method; 2) preparing a catalyst precursor by impregnation; and 3) calcining to prepare an Eu-atom-modified WO3 nanosheet catalyst. Under light-driven conditions, the catalyst prepared by this invention can reduce oxygen to hydrogen peroxide. The in-situ generated hydrogen peroxide combines with urea to form urea peroxide, achieving one-step photosynthesis of urea peroxide using urea, oxygen, and water as raw materials. This method avoids the problems of easy decomposition and explosion associated with the use of high-concentration hydrogen peroxide in existing synthesis processes, and has significant advantages such as safety, greenness, and sustainability.

The application discloses a kind of synthesis method of bicalutamide, belong to the technical field of preparation of organic compounds.The application uses N-(4-cyano-3-trifluoromethylphenyl) methyl acrylamide and N-(diphenylimine)-4-fluoro-benzenesulfonyl amide as starting material, carries out sulfonylation-peroxidation, obtains 2-tert-butyl peroxy-2-methyl-N-[4-cyano-3-(trifluoromethyl) phenyl]-3-[(4-fluorophenyl) sulfone] propionamide;2-tert-butyl peroxy-2-methyl-N-[4-cyano-3-(trifluoromethyl) phenyl]-3-[(4-fluorophenyl) sulfone] propionamide is reduced, and bicalutamide is obtained.The method has the advantages of raw material, reaction condition is easy to obtain, warm, catalytic efficiency is high, and operation is simple.

The present invention relates to the field of chemical engineering technology, and in particular, to a method for preparing caprolactone and a method for preparing an anhydrous peroxy acid product. The method for preparing caprolactone comprises: (1) in the presence of a homogeneous acidic catalyst, reacting hydrogen peroxide with an organic acid, and dehydrating the resultant reaction product to give a peroxy acid phase comprising the homogeneous acidic catalyst; (2) removing the homogeneous acidic catalyst in the peroxy acid phase to give the anhydrous peroxy acid product; and (3) subjecting the anhydrous peroxy acid product and cyclohexanone to an oxidation reaction. According to the method of the present invention, the peroxy acid is synthesized by using a homogeneous acidic catalyst, and the anhydrous peroxy acid product can be prepared by first dehydrating and then removing the catalyst. By oxidizing cyclohexanone with the anhydrous peroxy acid product to produce caprolactone, high caprolactone selectivity and yield can be achieved.

This invention provides a method for preparing epoxidized soybean oil and a composition for preparing epoxidized soybean oil. The preparation method includes the following steps: mixing soybean oil, an oxidant, a catalyst, and an auxiliary agent, and carrying out an epoxidation reaction to obtain epoxidized soybean oil; wherein, the oxidant is selected from a solution containing organic peroxides; the auxiliary agent is selected from sodium salts of organic acids, and the sodium salts of organic acids are selected from at least one of sodium alkylates and sodium tungstate. The preparation method effectively inhibits the occurrence of side reactions such as ring-opening reactions and excessive oxidation of unsaturated double bonds during the epoxidation process of epoxidized soybean oil by adding sodium alkylates and / or sodium tungstate as auxiliary agents during the preparation of epoxidized soybean oil, significantly improving the epoxy value and epoxy bond stability of epoxidized soybean oil while maintaining a relatively low iodine value.

The application discloses a coupling method and system for cumene refining and low-temperature concentration of cumene hydroperoxide, wherein the coupling method for cumene refining and low-temperature concentration of cumene hydroperoxide comprises the steps of refining cumene and low-temperature concentrating cumene hydroperoxide, and heat coupling is performed between the refining process of cumene and the refining process of cumene hydroperoxide by controlling the temperature and pressure of cumene refining and the temperature and pressure of cumene hydroperoxide concentration. The application realizes zero energy consumption in the concentration process, effectively establishes a low-temperature double-effect process, and simultaneously achieves the purposes of reducing product decomposition and energy consumption.