641 results about "Amyl alcohol" patented technology

The invention discloses a process for extracting litchi polyphenol from litchi through dissolvent abstraction, concentrating, separation and purification, and drying, wherein water or low carbon alcohols such as methanol, ethanol, propanol, isopropanol, butanol and amylic alcohol are used as the dissolvent.

The invention relates to the field of solar cells, and provides a manufacturing method of a methylamine lead iodine perovskite solar cell. A photosensitive layer is a methylamine lead iodine perovskite film. The methylamine lead iodine perovskite film is manufactured by the spin coating technology and the anti-solvent dropping and cleaning technology with combination of the solvent annealing technology. The spin coating technology refers to the process that a methylamine lead iodine perovskite CH3NH3PbI3 precursor solution is spin-coated on a PEDOT:PSS film. The anti-solvent cleaning technology refers to the process that the anti-solvent amyl alcohol is dropped in the process of spin-coating the CH3NH3PbI3 methylamine lead iodine perovskite precursor solution so that the perovskite is enabled to be quickly crystalized and precipitated, wherein the anti-solvent amyl alcohol is sec-amyl alcohol or tertiary amyl alcohol. The adopted preparation technology is simple so that the methylamine lead iodine perovskite solar cell of high efficiency and great repeatability without the hysteresis phenomenon can be prepared.

The present invention proposes one kind of mineral-floating foaming agent and its preparation. The foaming agent contains alcohol with branch chain and epoxy ethane and/or epoxy propane in the weight ratio of 1 to 1-6, and the alcohol with branched chain may be isopropyl alcohol, isobutyl alcohol or isoamyl alcohol. It is prepared through mixing alcohol with branched chain and epoxy ethane and/or epoxy propane, adding oxide of K or Na in 0.3-1% of material weight as catalyst, reaction at 0.01-1.2 MPa pressure and 170-190 deg.c temperature for 2-3 hr, decreasing the pressure to nomral pressure, cooling to below 50 deg.c and filtering. The foaming agent is water soluble, good in dispersivity, great in formed foam, favorable to secondary enrichment and recovery of fine mineral and has no environmental pollution.

The invention provides a low-temperature SCR (Selective Catalytic Reduction) denitration catalyst with a titanium-based core-shell structure and a preparation method of the catalyst. The titanium-based core-shell structure of the catalyst is formed by use of composite nanoparticles MnOx-CeO2 as the core and TiO2 as the shell and the size range of the catalyst is from 20nm to 200nm, wherein the molar ratio of the three elements Mn, Ce and Ti is (0.05-1): (0.05-1): 1. The preparation method of the catalyst mainly comprises the following steps: (1) mixing cerous nitrate with a manganese nitrate solution, dropwise adding a sodium hydroxide solution and then shifting the mixed solution to a hydrothermal kettle, and carrying out reacting, centrifuging, washing, drying and calcining to obtain the nanoparticles MnOx-CeO2; (2) preparing the nanoparticles with the core-shell structure in a reversed-phase microemulsion with CTAB (Cetyltrimethyl Ammonium Bromide) as a surfactant, n-amyl alcohol as a cosurfactant and cyclohexane as an oil phase. The low-temperature SCR denitration catalyst with a titanium-based core-shell structure has the advantages that the titanium-based core-shell structure is constructed for the first time, the center of the catalyst is protected by use of the TiO2 shell, and the probability that the active center contacts with SO2 in flue gas is reduced, and therefore, the active center is prevented from irreversible poisoning caused by erosion of SO2.

The invention provides a pulverized coal dispersing agent and an active water fracturing fluid for fracturing of a coal bed gas well. The pulverized coal dispersing agent is characterized in that the pulverized coal dispersing agent comprises the following components: (1) a non-ionic surface active agent; (2) organic ammonium salt; and (3) alcohol, wherein the non-ionic surface active agent is octyl phenol polyoxyethylene ether, the organic ammonium salt is 12-alkyl-3-methylammonium chloride, and the alcohol is ethyl alcohol, propyl alcohol, butyl alcohol or amyl alcohol; and the mass ratio of the non-ionic surface active agent, the organic ammonium salt and the alcohol is 2:1:7. The invention can lead the pulverized coal to be uniformly distributed in the fracturing fluid, reduce construction pressure, simultaneously discharge the pulverized coal out of the stratum with the fracturing fluid when discharging the fluid and avoid the blocking of crack channels.

The invention provides a catalyst for catalyzing furfural or furfuryl alcohol to prepare cyclopentanol through hydrogenation rearrangement. The catalyst is a load type catalyst and comprises one or two active components and carriers; the one or two active components are selected from Pt or Pd or Ru or Rh or Cu or Ni; the carriers are one or two oxides which are selected from Co or Al or Mn or Ce; the mass of the active components is 0.5-8.0% of that of the carriers. According to the catalyst, the high-yield cyclopentanol can be obtained under the condition of moderate water phase hydrogenation by taking the furfural or the furfuryl alcohol as raw materials, the yield can reach 80 percent, and a continuable, low-cost, moderate and effective method is supplied to production of the important fine chemical cyclopentanol.

The invention belongs to the technical field of chemical preparations and particularly relates to a formaldehyde scavenger and a preparation method thereof. The formaldehyde scavenger comprises the following raw materials in parts by weight: 10-20 parts of amino acid, 10-20 parts of starch, 5-10 parts of casein, 5-10 parts of polysorbate, 10-15 parts of isoamyl alcohol, 30-50 parts of plant flower extracts, 5-10 parts of active carbon carboxymethylcellulose, 6-8 parts of a penetrant, 5-10 parts of pillared rectorite, 10-20 parts of chitosan and 80-120 parts of deionized water. The formaldehyde scavenger provided by the invention is high in absorption efficiency and capable of eliminating free formaldehyde in air, reducing the release amount of formaldehyde in a decorated product and simultaneously improving the stability of the formaldehyde in the decorated product so as to solve the problem of formaldehyde pollution caused after indoor decoration and the health of people is beneficial.

An alcohol free or low alcohol fermented malt based beverage is disclosed. The malt based beverage has an alcohol content of not more than 1.0 vol. % preferably not more than 0.7 vol. % having an aroma profile close to the one of alcoholic lager beers. The beverage has 7.00-30.00 ppm ethyl acetate and 0.01-0.20 ppm ethyl butyrate. The beverage preferably has the esters 0.05-2.00 ppm isoamyl acetate; 0.01-0.10 ppm ethyl butyrate; and 0.01-0.05 ppm ethyl hexanoate. The beverage preferably has the higher alcohol 5.00-30.00 ppm (iso-)amyl alcohol. The (iso)amyl alcohol is defined as the sum of 3-methyl butanol and 2-methyl butanol.

Mesitylene is difficult to separate from 1,2,4-Trimethylbenzene because of the proximity of their boiling points. They are readily separated by azeotropic distillation. Effective agents are isopropyl acetate, 2-pentanol and acetonitrile.

The invention belongs to the technical field of fine chemicals and relates to benorilate amyl alcohol, particularly a process for preparing benorilate amyl alcohol. According to the technical scheme of the invention, phenyl dihydro pyran is synthesized firstly, and then is hydrogenated preliminarily. The reaction liquid of phenyl dihydro pyran is filtered, and the filtered clear liquid is hydrogenated. After that, the filtered clear liquid is filtered and washed, and benorilate amyl alcohol can be obtained through decompressing and rectifying the obtained crude product. According to the invention, benorilate amyl alcohol is prepared by means of a Raney-Ni catalyst and a Pd/C catalyst successively through the secondary hydrogenation process, so that the hydrogenation yield is high. Meanwhile, enorilate amyl alcohol, as a final product, is large in yield. Therefore, the industrialization of the above process is high in production and promotion value.

It is an object of the present invention to provide an inexpensive and efficient industrial method for obtaining (S)-2-pentanol, (S)-2-hexanol, 1-methylalkyl malonic acid and 3-methyl carboxylic acid at a high optical purity. The present invention provides a method of producing (S)-2-pentanol or (S)-2-hexanol which comprises allowing certain types of microorganisms or transformed cells, a product obtained by treating said microorganisms or cells, a culture solution of said microorganisms or cells, and/or a crude purified product or purified product of a carbonyl reductase fraction obtained from said microorganisms or cells, to act on 2-pentanone or 2-hexanone.

The invention discloses a method for synthesizing a 6''-O-lauroyl-naringin ester on line by using lipase as a catalyst, which comprises the following steps: by using naringin and vinyl laurate in a mole ratio of 1:(1-9) as raw materials, 0.5-1.0g of lipase Lipozyme RMIM as a catalyst and a tertiary amyl alcohol-DMSO (dimethyl sulfoxide) mixed solvent as a reaction solvent, uniformly filling the lipase Lipozyme RMIM into a reaction channel of a microfluidic channel reactor, wherein the internal diameter of the reaction channel of the microfluidic channel reactor is 0.8-2.4mm, and the reaction channel is 0.5-1.0m long; continuously introducing the raw materials and the reaction solvent into the reaction channel to perform acylation reaction, wherein the acylation reaction temperature is controlled at 40-55 DEG C, and the acylation reaction time is 15-35 minutes; and collecting the reaction solution on line, and carrying out conventional after-treatment on the reaction solution to obtain the 6''-O-lauroyl-naringin ester. The method has the advantages of short reaction time, high selectivity and high yield.

The invention provides an organic silicon modifying acrylic ester microemulsion which is made by taking butyl acrylate, styrene and silane coupling agent KH570 as basic raw materials, taking a nonionic-negative ion surface active agent or a nonionic-nonionic surface active agent as a composite surface active agent, taking n-amyl alcohol as an auxiliary surface active agent, taking deionized water as disperse phase, taking azo type and peroxide type or sulphate as evocating agents, and adopting the microemulsion free radical copolymerization. The organic silicon modifying acrylic ester microemulsion is semitransparent or transparent, has good anti- electrolyte stability, centrifugal stability and distilling stability, reinforces the clay in wet environment at a room temperature, has little influence on the surface appearance on the clay, has the advantages of high permeating speed and controllable permeating depth, thereby being a novel room temperature reinforcing and protective material for the clay surface in the wet environment.

The invention relates to methanol gasoline additive; counted by mass percent, raw materials of the additive disclosed by The invention comprise 20-30% of alcohols mixture, 30-35% of ethers mixture, 10-15% of oleic acid or dimer acid and C1-3 fatty amine, 20-26% of methylbenzene or isopropylbenzene, 2-6% of 2,6-butylatedhydroxytoluene, and 1-5% of OP-15; the alcohols mixture comprises propyl alcohol, butanol and amyl alcohol; and the ethers mixture comprises dimethoxymethane or 1,2-dimethoxyethane and glycol ether. After the additive of The invention is added to high-proportion methanol gasoline (such as M60-M80 methanol gasoline), the additive can comprehensively solve an obvious defect that the high-proportion methanol gasoline is made as vehicle fuel, thus, physicochemical quality index and actual operational performance of the high-proportion methanol gasoline are accorded with a demand of gasoline vehicle fuel; in addition, the methanol gasoline additive can be used completely without refitting automobiles.

The invention discloses a reaction-distillation coupling preparing acetic acid series ester method, which comprises the following steps: using glacial acetic acid and alcohol with lower five carbons (alcohol, optal,alcohol isopropylicum, butanol, isobutanol, amyl alcohol and isoamyl alcohol ) for raw material; adopting modified strong acidic phenylethene series basic ion exchange resin for accelerant; preparing by reaction-distillation coupling; getting acetic acid ethyl ester, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, amyl acetate and iso-amyl acetate; making glacial acetic acid and alcohol with lower five carbons to carry on esterification reaction by solid acid catalysis in trickle bed reactor; adding reaction product (acetic acid ethyl ester, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, amyl acetate and iso-amyl acetate), water and cycle still liquor in fractionating tower; getting acetic acid ethyl ester, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, amyl acetate and iso-amyl acetate by separating at the top of the tower. The conversion rate of alcohol with lower five carbons is more than 96%, the recovery ratio of acetic acid ethyl ester (propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, amyl acetate and iso-amyl acetate) is more than 95%. The invention has high alcohol conversion rate, which simplifies the operation.

The invention discloses a preparation technology of fly maggot chitin and chitosan and an application of fly maggot chitin to inducing a trichoderma aureoviride T2 bacterial strain to generate chitinase, belonging to the field of biological technology. The preparation technology of fly maggot chitin has the main characteristics that the traditional hydrochloric acid calcium removal technology is changed into an EDTA (Ethylene Diamine Tetraacetic Acid) calcium removal technology, the environmental pollution caused by waste acid discharge can be reduced, the damage of concentrated acid on chitin molecular chains can be avoided, and the chitin product with the high quality is obtained; and according to the preparation technology of fly maggot chitin, the traditional technology of 4-hour high-temperature concentrated alkaline refluxing is changed into a sodium hydroxide-amyl alcohol reaction system, microwave heating treatment is carried out twice, the utilization rate of alkali liquid is increased, the reaction time is greatly shortened, the energy consumption is saved, and a white powdery chitosan product with the lower moisture content and the higher degree of deacetylation is obtained. The fly maggot chitin disclosed by the invention can be used as a carbon source for inducing the trichoderma aureoviride T2 bacterial strain to generate the chitinase and has obvious induction effect.

A preparation method of a photocatalytic material by in-situ compositing zinc ferrite nano-rods with lamellar TiO2 includes the steps of performing solvothermal synthesis to main raw materials including zinc chloride, ferrous chloride tetrahydrate, ammonium oxalate monohydrate, oxalic acid dihydrate, tetrabutyl titanate, n-pentyl alcohol, hydrofluoric acid and ethylene glycol, thereby producing the photocatalytic material by in-situ compositing the rodlike zinc ferrite with the lamellar TiO2. The method is simple in process and is easy to control in reaction conditions. By means of visible light with [lambda] being 500 nm being a light source, the material is subjected to photocalaytic performance test, wherein the material is proved to have excellent photocalaytic performance under visible light by degrading organic toxic pollutants, such as bisphenol A, rhodamine B, humic acid and the like; the material has excellent capability of photocatalytically degrading the organic pollutants,and has excellent application prospect in the field of environmental protection and water pollution control and has extensive development potential in new energy development and utilization by solar energy.

The invention belongs to the technical field of a chemical preparation and particularly relates to a building finishing pollutant treating agent and a preparation method thereof. The building finishing pollutant treating agent comprises the following raw materials in parts by weight: 10-20 parts of amino acid, 10-20 parts of polyacrylamide, 5-10 parts of casein, 10-20 parts of isoamyl alcohol, 5-10 parts of activated carbon carboxymethylcellulose, 10-20 parts of starch, 8-16 parts of sorbic acid, 8-15 parts of sodium sorbate, 30-50 parts of extractives of plant flowers, 5-12 parts of a penetrant, 16-25 parts of sepiolite powder, 1-3 parts of a manganese-cerium composite oxide catalyst, 5-15 parts of cross-linking rectorite, 10-20 parts of chitosan and 120-200 parts of deionized water. The building finishing pollutant treating agent provided by the invention has the advantages of good adsorbability and long service life, so that the pollution caused by the building finishing pollutant in indoor finishing can be solved.