27 results about "Heptanol" patented technology

The invention relates to the technical field of alcohol preparation through aldehyde hydrogenation, in particular to a butyraldehyde, valeraldehyde and 2-propyl heptanal liquid-phase hydrogenation method and device, the device comprises a liquid-phase hydrogenation reactor, butyraldehyde, valeraldehyde and PBA, the liquid-phase hydrogenation reactor comprises an inner core pipe filled with a hydrogenation catalyst and an outer annular bed, and the outer annular bed is filled with a hydrogenation catalyst. The method is characterized in that butyraldehyde, valeraldehyde and PBA generated by an aldehyde-aldehyde condensation reaction are respectively fed into a hydrogenation system, the reactions of generating 2-propyl heptanol through PBA hydrogenation, generating butanol through butyraldehyde hydrogenation and generating pentanol through valeraldehyde hydrogenation are carried out in a liquid phase, and the pressure is about 2.4 MPa. Compared with gas-phase hydrogenation in the prior art, the liquid-phase hydrogenation adopted in the method has the advantages that the energy consumption is lower; the problem of high energy consumption of gas phase hydrogenation is solved.

The invention discloses a method for removing the fishy smell of chicken gizzards through multi-bacterium combined fermentation, and belongs to the technical field of poultry byproduct processing. According to the method disclosed by the invention, the chicken gizzards are subjected to fishy smell removal treatment by compounding the saccharomycetes Y4-1 and the bacillus SB. After fishy smell removal treatment, the content of key fishy smell substances including 1-octylene-3-alcohol, octanol, hexanal, nonanal and heptanal is greatly reduced, the total content is reduced from 25.15 mu g / g to 6.02 mu g / g and is reduced by 76.06%, heptanol, geranyl acetone, methyl heptanoate, methyl caprylate, glycerol monooleate, trans-2-decenal, 2-undecenal and other substances are completely removed, and the content of the key fishy smell substances is reduced by 76.06%. Meanwhile, elegant aroma components such as benzaldehyde and phenylacetaldehyde are generated. In conclusion, the saccharomycetes Y4-1 and the bacillus SB are compounded to remove fishy smell, so that the fishy smell substances of the chicken gizzards can be effectively removed, the flavor of the chicken gizzards can be further improved, and the edible value of the chicken gizzards is improved.

The invention relates to a nickel-based hydrogenation catalyst and a preparation method and application thereof, and relates to the technical field of catalyst preparation. The preparation method of the nickel-based hydrogenation catalyst comprises the following steps: mixing an aluminum salt and a precipitant in water, and carrying out a neutralization gelling reaction to obtain a precipitate slurry; mixing the precipitation slurry, organic acid magnesium salt and organic acid lanthanum salt, and carrying out aging reaction to obtain modified aluminum oxide powder; mixing the modified aluminum oxide powder, a peptizing agent and an extrusion aid, performing extrusion molding, and performing drying and roasting to obtain a catalyst carrier; nickel salt and organic acid cerium salt are mixed in water to prepare impregnation liquid, the catalyst carrier is impregnated with the impregnation liquid, and the nickel-based hydrogenation catalyst is obtained through drying and roasting. The nickel-based hydrogenation catalyst has good stability and carbon deposition resistance, has good catalyst activity and selectivity, can be applied to preparation of 2-propyl heptanol, and effectively improves the hydrogenation reaction conversion rate and the target product selectivity.

The invention relates to the technical field of flavors and fragrances, in particular to a lily fragrance compound, a preparation method thereof and a lily fragrance base. The lily flower fragrance compound has the following structural formula: the prepared lily flower fragrance compound is 2-(3-isopropyl phenyl)-3-methylene-6-methyl-4-heptanol, and the compound has a lily flower fragrance and a rose fragrance, and is elegant in fragrance and long in fragrance holding time. The preparation method of the compound is simple in process, convenient to operate and control, high in production efficiency and suitable for industrial production. The prepared lily fragrance base is added with the lily fragrance compound, and compared with a lily fragrance base without the compound, the lily fragrance base has more prominent lily fragrance and more elegant rose fragrance, and the fragrance quality of the base is remarkably improved.

The invention discloses a method for detecting aflatoxin in silkworm chrysalis meal. According to the invention, a salting-out auxiliary liquid-liquid extraction technology and a supramolecular solvent extraction technology are integrated and are executed by an automatic salting-out extraction device specially designed for a pretreatment process, so that a system and a scheme for detecting aflatoxin in silkworm chrysalis meal, which integrate a special device, a core reagent and a detection method, are provided; a detection method which is green, environment-friendly, rapid, efficient, low in cost, high in sensitivity and good in accuracy is established. The preparation method comprises the following specific steps: preparing a supermolecular solvent consisting of n-heptanol, tetrahydrofuran and water and a saturated aqueous solution; the method comprises the following steps: mixing a silkworm chrysalis meal sample with a supramolecular solvent and ammonium sulfate, and carrying out vortex, centrifugation, constant volume and filtration to obtain a test solution; and carrying out quantitative analysis by adopting a matrix matching standard curve. The method is simple and convenient to operate, low in organic solvent consumption and low in cost, and is suitable for high-throughput rapid screening and quantitative detection of trace aflatoxin in silkworm chrysalis meal.

The application belongs to the technical field of quality control of traditional Chinese medicine decoction pieces and detection technology, and provides a detection method for processing degree of black sesame. The method detects the relative contents of n-heptanol, 2-methylpyrazine and trans-2-hexen-1-ol in the sample to be detected by GC-IMS; and the relative contents of the three components are substituted into the results of the Bayesian classification discriminant formula of raw and cooked states and processing degree respectively. The method of the application does not need complex sample pretreatment, is simple and environmentally friendly, has low detection cost, and the result is intuitive. To some extent, the method solves the problem that the existing evaluation method is highly subjective and difficult to evaluate the processing degree of black sesame in large quantities, quickly and objectively and accurately, and lays a foundation for the large-scale, intensive, standardized and digitalized production of traditional Chinese medicine decoction pieces.

For example, to provide a composition that can enhance the flavor of grilled squid. [Solution] Use at least one of the 14 aroma components listed in Groups A and B below. Group A: 2,3-butanedione, 3-hydroxy-2-butanone (acetoin), 3-ethylpyridine, 5-methyl-2-hexanone, 3-methylbutanal, and ethyl 3-methylbutanoate. Group B: 2-acetylthiazole, thiazole, 1-heptanol, 2,6-dimethylpyrazine, dimethyl trisulfide, 2,3,5-trimethylpyrazine, (2E,6Z)-2,6-nonadienal, and acetophenone.

The invention discloses a preparation method and application of a green and efficient supramolecular solvent, and belongs to the technical field of food safety detection. The supramolecular extractant can be used for efficiently and rapidly extracting perfluorinated and polyfluoroalkyl compounds and sulfonamides in food. The supramolecular micro-extraction agent is prepared from n-heptanol, tetrahydrofuran and pure water with the pH value of 6, wherein the volume ratio of the raw materials is as follows: n-heptanol: tetrahydrofuran: pure water is 1: 4: 35. The extraction process of the supramolecular micro-extractant comprises the following steps: weighing 2 g of a food sample, putting the food sample into a 50 mL polypropylene centrifuge tube, adding 1 mL of a supramolecular solvent, then adding 0.1 g of NaCl, carrying out vortex for 5 min, carrying out centrifugation for 10 min, diluting the supernatant with methanol according to a ratio of 1: 1, and carrying out filtration with a 0.22 [mu] m organic filter membrane for LC-MS / MS analysis. The supramolecular extractant provided by the invention can replace a traditional organic solvent with high toxicity to realize rapid detection of perfluorinated and polyfluoroalkyl compounds in food. The preparation process of the supramolecular extractant is simple, the steps of purification, nitrogen blowing concentration and the like are not needed in the extraction process, and the supramolecular extractant has the advantages of being green, simple, efficient, low in cost and environmentally friendly.

The invention provides a continuous synthesis method and a continuous synthesis device of 2-propylheptyl glycerol. According to the continuous synthesis method of the 2-propylheptylglycerol, the renewable natural raw material glycerol and the byproduct 2-propylheptanol of the coal-to-olefin process are used as raw materials, and the continuous synthesis of the 2-propylheptylglycerol is performed by adopting a fixed bed reactor through a one-step reaction, so that the problems of a large amount of inorganic salt, more wastes, low production cost and the like in the traditional process are avoided. The yield of the product is up to 90% or above, and the purity of the product can be up to 99.0% or above. Moreover, the synthesis method of the 2-propylheptyl glycerol, provided by the invention, has the advantages of abundant raw material sources, low price, simple synthesis process, high product yield, high purity, low pollution, high raw material conversion rate and high economical efficiency, and is suitable for industrial large-scale production.

The invention discloses a bio-based plasticizer as well as a preparation method and application thereof, and relates to the technical field of plasticizers, and the structural formula of the bio-based plasticizer is shown in the specification. According to the bio-based plasticizer, abundant polar groups are obtained by introducing oligomeric lactic acid into a vanillic acid skeleton, and meanwhile, the proportion of non-polar groups of the plasticizer is expanded by introducing n-heptanol, so that the plasticizing performance, migration resistance and the like of the plasticizer are effectively improved, and the application of the bio-based plasticizer in polyvinyl chloride products is realized.

The application discloses a three-metal active carbon supported catalyst and application thereof, and the catalyst takes active carbon as a carrier, and a first metal element, a second metal element and an auxiliary metal element are loaded on the carrier, wherein the first metal element is selected from Rh, W and Ir, the second metal element is selected from Ga, Sn and Mg, and the auxiliary metal element is selected from La, Ce and Y. The application is applied to the catalytic hydrogenation of 4-heptanone into 4-heptanol, and when the conversion rate of 4-heptanone reaches 100%, the product selectivity of 4-heptanol can reach 100%, the burden of product separation and purification in the later stage can be greatly reduced, and the production cost is lowered; no solvent is used in the catalytic reaction process, the reaction temperature is relatively low, and the green production requirement is met; the catalyst has high activity, the reaction time is relatively short, and the production efficiency can be improved.

The application provides a device and method for producing isopentanal byproduct of oil phase of 2-propyl heptanol production device condensation circulating tower, and relates to the field of chemical industry.The device comprises a first rectifying tower and a second rectifying tower;the inlet of the first rectifying tower is communicated with the oil phase outlet of the overhead chromatograph of the 2-propyl heptanol condensation circulating tower, the bottom outlet of the first rectifying tower is communicated with the inlet of the second rectifying tower, and the bottom outlet of the second rectifying tower is communicated with the inlet of the 2-propyl heptanol condensation reactor.The method comprises the following steps: introducing materials from the oil phase outlet of the overhead chromatograph to the first rectifying tower, separating in the first rectifying tower, and obtaining a crude pentanal mixture at the bottom;the crude pentanal mixture is sent to the second rectifying tower for separation, crude n-pentanal is obtained at the bottom, and isopentanal product is obtained at the top.The device and method provided by the application simultaneously realize the production and separation of isopentanal, effectively reduce energy consumption, the equipment is simple, the production capacity is high, and large-scale industrial production is suitable.

The invention provides a nano high-molecular active antirust agent which is prepared from the following components in percentage by weight: 5.00% to 10.00% of nano zinc oxide, 5.00% to 10.00% of nano silicon dioxide, 9.00% to 15.00% of triethanolamine borate, 3.00% to 6.00% of zinc molybdate, 8.00% to 14.00% of 2-propyl heptanol polyoxyethylene ether, 4.00% to 10.00% of lauryl sodium sulfate, 2.00% to 7.00% of an amino methoxy silane coupling agent, 1.00% to 5.00% of epoxy resin and the balance of water. The antirust agent not only has excellent antirust performance, but also can adapt to various complex use environments. And the paint is non-toxic and environment-friendly.

A process for the preparation of a catalyst comprising a nickel active phase and an alumina support, said catalyst comprising from 1 to 50% by weight of elemental nickel with respect to the total weight of the catalyst, the nickel being distributed on a shell at the periphery of the support and at the core of the support, said process comprising the following steps: a) impregnation of the support with a solution of heptanol in a volume V1, said volume V1 being from 0.2 to 0.8 times the total pore volume TPV of the support, to obtain an impregnated support; b) impregnation of the impregnated support obtained at the end of step a) with a solution comprising a nickel active phase precursor, to obtain a catalyst precursor; c) drying of the catalyst precursor obtained at the end of step b) at a temperature lower than 250°C.

The invention discloses bacillus velezensis for producing 2-decanol and 5-methyl-2-heptanol and application of the bacillus velezensis, and belongs to the technical field of microorganisms. The bacillus velezensis capable of producing the 2-decanol and the 5-methyl-2-heptanol is obtained through separation for the first time, the bacillus velezensis is separated from rhizosphere soil of corn, use is safe, and green production and application of the 2-decanol and the 5-methyl-2-heptanol are achieved. The bacillus velezensis disclosed by the invention has a relatively good antibacterial effect on a plurality of pathogenic bacteria, and has broad-spectrum antibacterial activity.

Process for preparing a catalyst comprising a nickel active phase and an alumina support, said catalyst comprising between 1% and 50% by weight of elemental nickel relative to the total weight of the catalyst, the nickel being distributed both over a crust at the periphery of the support, and at the core of the support, which process comprises the following steps:a) said support is impregnated with a volume V1 of a heptanol solution of between 0.2 and 0.8 times the total pore volume TPV of said support in order to obtain an impregnated support;b) the impregnated support obtained at the end of step a) is impregnated with a solution comprising a precursor of the nickel active phase in order to obtain a catalyst precursor;c) the catalyst precursor obtained at the end of step b) is dried at a temperature below 250° C.

DEPCT66 This invention relates to a process for preparing a linker, which is... The benefits of conjugating molecules for therapeutic applications (e.g., cytotoxic substances). With targeted moisturizers (e.g., proteins, peptides, antibodies, nanoparticles, nucleic acids). During this process, lipase-like lipase B from Candida antarctica was used. Enantioselective resolution of (S,S)-2-benzyl. Thiocyclohexanol or (S,S)-2-benzyl thiocycloheptanol in the presence of an acyl group additive. (acylating agent) which is reduced for release of the protective barrier to obtain (S,S)-2-mercaptocyclo. Hexanol or (S,S)-2-mercaptocycloheptanol can then be used for crosslinking. Moisturizing agents for targeted moisturizing treatments;

The application discloses a kind of acetophenone derivatives and preparation method thereof, belong to organic synthesis field.The acetophenone derivative is 1-[3-methoxy-4-(1-ethyl pentyloxy) phenyl] ethanone, its preparation method includes: anhydrous tetrahydrofuran, 3-heptanol, 4-hydroxy-3-methoxy acetophenone and triphenyl phosphine are mixed, then cooling to 0~10 ℃ and keep in this temperature range drop to it azobisdimethyl valerate, after drop completion room temperature reaction 1~24 hours, again after processing is obtained.The application uses the product that can be easily purchased in market as starting material, and uses relatively safe solvent to carry out reaction, obtains higher reaction yield and high product purity, process flow operation is simple and has no harsh reaction condition, can overcome amplification effect, still maintains higher yield and high purity in kg level production, so as to be more suitable for industrialized production application.

The invention discloses a brown planthopper repellent as well as a preparation method and application thereof. The brown planthopper repellent comprises the following components: 2-heptanone, 2-heptanol, linalool and paraffin oil in a ratio of (0.02-0.2): (0.02-0.2): (0.02-0.2): (0.2-2). The pesticide composition can generate a repelling effect on brown planthoppers. The repellent has the characteristics of low cost, high efficiency, environmental friendliness, safety to human and livestock and the like. The nilaparvata lugens repellent disclosed by the invention has a wide industrialization prospect, is particularly suitable for being used in pollution-free production of crops due to the simple preparation method, and has wide economic, social and ecological benefits.

A fuel additive composition comprising butanol, pentanol, hexanol, heptanol, methylcyclohexanol, ethyl vinyl ether and nonanol. The composition may comprise 1-butanol, 2-butanol, 2-pentanol, 3-hexanol

The application provides a preparation method of sesame paste by infrared and microwave heat treatment, and relates to the technical field of sesame paste processing. The content of benzopyrene in the sesame paste prepared by infrared and microwave heat treatment is significantly reduced by 13.73%, the content of PAH4 is significantly reduced by 20.5%, the content of Harman is reduced by 24.27%, the content of Norharman is reduced by 23.14%, the acid value is significantly reduced by 65.95%, and the peroxide value is significantly reduced by 37.93%. On the other hand, the infrared and microwave heat treatment produces flavor substances such as 2-ethyl-3,5,6-trimethylpyrazine, alpha-ethylene-benzene acetaldehyde, dihydro-jasmine ketone acid methyl ester, 2-butene-1-alcohol propionate and n-heptanol, so that the content of volatile compounds such as aldehydes, alcohols, esters and acids in the prepared sesame paste is increased by 31.54%, 3.72%, 42.39% and 16.95% respectively.

The invention discloses a brown planthopper repellent and application thereof. The brown planthopper repellent comprises the following components: farnesene, 2-heptanol, (E)-2-hexenal and paraffin oil, wherein the ratio of farnesene to 2-heptanol to (E)-2-hexenal to paraffin oil is (0.04-0.16): (0.04-0.16): (0.04-0.16): (0.4-1.6); the pesticide composition can generate a repelling effect on brown planthoppers. The repellent has the characteristics of low cost, high efficiency, environmental friendliness, safety to human and livestock and the like. The nilaparvata lugens repellent disclosed by the invention has a wide industrialization prospect, is particularly suitable for being used in pollution-free production of crops due to the simple preparation method, and has wide economic, social and ecological benefits.

The invention relates to an application of leaf alcohol and / or 4-heptanol in inducing diplodia longissima leaf beetles and a preparation method of the leaf alcohol and / or the 4-heptanol. It is found for the first time that both the leaf alcohol and the 4-heptanol can attract the diplodia longifolia, especially when the two compounds are combined together according to a certain proportion to attract the diplodia longifolia, the synergistic interaction effect can be achieved, and therefore the two compounds can be used for monitoring and / or preventing and treating the diplodia longifolia.

The invention discloses a synthesis method of cis-7-dodecenol acetate, which is characterized in that 7-bromo-1-heptanol is used as an initial raw material, and accurate construction of cis-double bonds and efficient conversion of acetate are realized through hydroxyl protection, Sonogashira coupling, Lidlar hydrogenation, deprotection and acetylation reaction. The preparation method has the advantages that 1) TBDMS-Cl is adopted to protect hydroxyl, so that coupling side reaction is avoided; 2) high-selectivity cis-hydrogenation (greater than 94%) is realized through a Lidlar catalyst; 3) the synthetic route is simple, and the total yield can reach 60% or above; and 4) use of highly toxic reagents (such as mercury salts) is avoided, by-products are easy to treat, and the method is suitable for industrial production.

This invention relates to fuel additive compositions, blended fuels and the production thereof. In particular, the invention relates to a fuel additive composition that contains butanol, pentanol, hexanol, heptanol, methylcyclohexanol, ethyl vinyl ether and nonanol.

The invention discloses a method for large-scale preparation of 2-heptanone from 1-heptene by a two-step method, which specifically comprises the following steps of: firstly, directly hydrating 1-heptene serving as a raw material by using a specific catalyst to obtain 2-heptanol, and secondly, reacting 1-heptene with 2-heptanol under the conditions of a copper-based fixed bed catalyst and hydrogen-containing mixed gas to obtain 2-heptanol. And carrying out gas-phase dehydrogenation to obtain the 2-heptanone. By optimizing the process route, the preparation efficiency is improved, the yield of 95% in the whole process is achieved, the yield is remarkably higher than that of a traditional process route using acetone and butyraldehyde as raw materials, discharge of waste liquid containing acid and alkali is greatly reduced, large-scale industrial production is easy to achieve, and the green chemistry concept is met.

The present invention belongs to the technical field of pesticides. The present invention provides a white-backed planthopper repellent, the components of which include at least one of 2-heptanol, trans-2-hexenol, and α-terpinene. The present invention has found that 2-heptanol, trans-2-hexenol, and α-terpinene all have high repellent activity against white-backed planthoppers, and can be used as repellents for white-backed planthoppers, reducing the insect population density, mating rate, and reproduction rate of white-backed planthoppers in rice fields, thereby achieving the purpose of preventing and controlling white-backed planthoppers. In addition, 2-heptanol, trans-2-hexenol, and α-terpinene are all plant-derived substances, which have the advantages of being safe and non-toxic to humans and animals, being environmentally friendly, and leaving no residue. 2-heptanol, trans-2-hexenol, and α-terpinene have good application prospects and value in pest control.