495 results about "Furfural" patented technology

The invention discloses a method for synthesizing tetrahydrofuran from furfural in one step and a preparation method of a catalyst for the tetrahydrofuran. The catalyst is a bimetallic catalyst, bimetallic is M1 and M2, M1 is Pd, and M2 is selected from one of Pt, Rh, Ru, Ni, Cu, Co, Mn and Ce; the catalyst comprises an active component and a carrier, the bimetallic is the active component, and the carrier is selected from at least one of activated carbon, silicon dioxide, aluminum oxide, magnesium oxide, an S-1 molecular sieve, a ZSM-5 molecular sieve, a Beta molecular sieve, an MOR molecular sieve and a Y molecular sieve; based on the total weight of the catalyst, the loading capacity of M1 is 0.5-3.5%, and the loading capacity of M2 is 0.5-3.5%. The catalyst provided by the invention can be used in a reaction for preparing tetrahydrofuran through furfural hydrogenation, and can improve the conversion rate of furfural and the selectivity of tetrahydrofuran.

The invention relates to the technical field of anti-yellowing, in particular to anti-yellowing lining cloth with a hot melt coating and a preparation method of the anti-yellowing lining cloth. Composite carbon dots, an anti-yellowing agent and a composite chitosan solution are adopted to prepare finishing liquid for finishing the lining cloth; the preparation method comprises the following steps: selecting furfural and urea as a carbon source and a nitrogen source, performing one-step hydrothermal synthesis to obtain a nitrogen-doped furfural-based carbon dot, and grafting an amino-terminated polyimidazolium salt antibacterial compound to obtain a composite carbon dot; wherein the amino-terminated polyimidazolium salt antibacterial compound is an amino-terminated halogen-free polyimidazolium salt antibacterial compound which is prepared by taking ethylenediamine, butyric acid, glyoxal and formaldehyde as raw materials based on amine-aldehyde polycondensation and has good biocompatibility; the preparation method comprises the following steps: by taking polybutylene adipate, toluene diisocynate and isophorone diisocyanate as main monomers, polypropylene oxide triol as a crosslinking monomer, 2, 2-dimethylolpropionic acid and 4, 4 '-diaminodiphenyl disulfide as chain extenders and composite carbon dots as an end-capping reagent, adding water and emulsifying to obtain the waterborne polyurethane hot melt adhesive.

The invention discloses a double-morphology boron-containing Zn / Cu metal organic framework composite material as well as preparation and application thereof, and belongs to the technical field of fine chemical engineering. The double-morphology boron-containing Zn / Cu metal organic framework composite material is prepared through a one-pot hydrothermal reaction, and the double morphology comprises a three-dimensional nanoflower structure and a three-dimensional rod / columnar structure. Specifically, by adjusting the molar ratio of Zn to Cu in the coordination process with corresponding ligands, when the molar ratio of Zn to Cu reaches 1: 1, the original single nanoflower structure can generate a new three-dimensional rod / columnar structure, so that two composite forms are formed. The double-morphology boron-containing Zn / Cu metal organic framework composite material shows high activity and high selectivity when being used for two key reactions of electrochemical hydrogenation reduction and electrochemical oxidation of furfural.

The invention relates to the technical field of waste asphalt regeneration, and particularly discloses a waste asphalt regenerant, large-proportion waste asphalt containing the waste asphalt regenerant and a preparation method of the waste asphalt regenerant and the large-proportion waste asphalt. The waste asphalt regenerant is prepared from the following raw materials: 45 to 55 percent of epoxidized illegal cooking oil, 15 to 20 percent of furfural refined oil, 8 to 12 percent of methyl carbamate, 3 to 5 percent of nano mica powder, 10 to 15 percent of desulfurized rubber powder and 5 to 8 percent of SEBS (Styrene-Ethylene-Butylene-Styrene) modifier. The waste asphalt regenerant has a three-dimensional network structure which is subjected to polar bonding; the large-proportion waste asphalt is prepared from the following components in parts by mass: 70 to 90 parts of waste asphalt, 15 to 25 parts of limestone sand, 10.5 to 18 parts of waste asphalt regenerant, 1 to 5 parts of new asphalt and 0.05 to 0.15 part of long-chain aliphatic hydrocarbon warm mixing agent. The regenerant can act in molecules of the waste asphalt, a stable space structure with elasticity and a three-dimensional network is formed through the synergistic effect of multiple components, and good low-temperature crack resistance and performance stability are kept after the waste asphalt is regenerated through the chemical bond effect among the components.

The invention relates to the technical field of gas-slag separation, and discloses a device for treating odor in a furfural production workshop, which comprises a spraying shell, an activated carbon filter layer mounted at the top of the spraying shell, a conical exhaust shell mounted at the top of the activated carbon filter layer, and an air inlet fixed on the side wall of the spraying shell, a spraying mechanism is arranged in the spraying shell, and the spraying mechanism is used for spraying purification liquid into the spraying shell; and the spraying amount real-time adjusting system is used for adjusting the flow of the spraying purification liquid in the spraying shell in real time. The gas-liquid synergism is dynamically evaluated and the spraying amount is adjusted through the spraying amount real-time adjusting system, the problems that a traditional device is lagged in adjustment and low in purification efficiency are solved by combining the activated carbon filtering layer and the multi-stage spraying structure, and the device has the advantages that the state change of waste gas and purification liquid is dynamically responded, the peculiar smell removal efficiency is improved, and the energy consumption and the maintenance frequency are reduced.

The utility model discloses a furfural aldehyde gas ORC waste heat recovery device, which belongs to the technical field of waste heat recovery and comprises a first material pipe and a second material pipe, the second material pipe is connected with a heat exchange device through a second pipeline, a waste heat recovery drying box is mounted outside the heat exchange device, and a buffer support base is arranged below the waste heat recovery drying box. A drying heat preservation assembly is arranged on the portion, located in an inner cavity of the waste heat recovery drying box, of one side of the heat exchange device and can provide heat preservation and drying for the heat exchange device, so that the waste heat recovery efficiency is improved, and a pipeline anti-blocking vibration cleaning assembly is arranged on the portion, located on the inner wall of the waste heat recovery drying box, of one side of the drying heat preservation assembly. The pipeline anti-blocking vibration cleaning assembly exerts force to hit the heat exchange device, so that dirt in a pipeline in the heat exchange device is vibrated, falls off and is discharged. Therefore, the waste heat recovery efficiency and quality are improved, and waste heat loss is reduced. The waste heat recovery device improves the waste heat recovery efficiency.

The invention discloses a lignocellulose biomass-based hard carbon negative electrode material as well as a preparation method and application thereof. The method comprises the following steps: carrying out hydrothermal pretreatment on lignocellulose biomass by using low-corrosivity maleic acid, and regulating and controlling the composition of the lignocellulose biomass, the maleic acid and the lignocellulose to obtain a precursor rich in lignin and cellulose; in the pyrolysis and carbonization process, the thermal stability of the precursor is improved, and the lignin can more effectively inhibit the rapid concentrated pyrolysis of cellulose, so that the rearrangement of pyrolysis products is weakened. The method is beneficial for preventing overgrowth of hard carbon graphite microcrystals during high-temperature carbonization, so that the hard carbon material with large interlayer spacing and abundant small-size closed pores is prepared. The hard carbon material shows high specific capacity and excellent rate capability when being applied to the negative electrode of the sodium-ion battery. Meanwhile, xylose and furfural generated by decomposition of hemicellulose in a liquid phase can be effectively collected, and full-component utilization of biomass is achieved. The requirements of green production are met, and industrial application is easy to realize.

The purpose of the present invention is to provide a novel beer-flavored fermented beverage in which the purine concentration is reduced and the deterioration in flavor due to the reduction in purine concentration is improved. The present invention provides a beer-flavored fermented beverage having a purine concentration of 35,000 ppb or less, an adenosine concentration of 15,000 ppb or less, or a guanosine concentration of 56,000 ppb or less, wherein the 5-methylfurfural concentration is 10 ppb or more.

To provide an alcoholic beverage containing Brown spirits and water-soluble dietary fiber, and excellent in easiness to drink and flavor like Brown spirits.SOLUTION: An alcoholic beverage comprising Brown spirits, a water-soluble dietary fiber, and one or more selected from the group consisting of ethylcaprate and furfurals; the alcoholic beverage described above, wherein the concentration of ethylcaprate is 0.02 to 0. 20ppm or the concentration of furfurals is 0.05 to 0. 50ppm; and a method for improving the taste of an alcoholic beverage comprising Brown spirits and a water-soluble dietary fiber, the method comprising adding one or more selected from the group consisting of ethylcaprate and furfurals.SELECTED DRAWING: None

The invention relates to a continuous preparation method of a supported catalyst and application of the supported catalyst in catalysis of furfural hydrocracking. The method comprises the following steps: adding Cu (NO3) 2.3 H2O, Ce (NO3) 3.6 H2O, Mg (NO3) 2.6 H2O and Al (NO3) 3.9 H2O into deionized water to form a solution A; naOH and Na2CO3 are taken and dissolved in deionized water, and a solution B is formed; then respectively introducing the solution A and the solution B into a feeding pump, then introducing into a membrane dispersion microreactor, and mixing to form a precipitate; and washing, drying, calcining and reducing to obtain the catalyst Cu-Ce / MgO-Al2O3. The catalyst prepared by the invention is used in a reaction for catalyzing furfural hydrocracking to prepare 1, 2-pentanediol, and shows excellent catalytic activity and stability, the conversion rate of furfural is as high as 99%, and the yield of 1, 2-pentanediol reaches 44%.

The invention discloses a modifier for reducing wine grape soil obstacles and a preparation method and application thereof, and belongs to the technical field of soil improvement. According to the invention, the specific complex microbial inoculant composed of bacillus subtilis, bacillus licheniformis and trichoderma harzianum is adopted to ferment the grape pomace, antibacterial substances and organic acids can be generated, and saline-alkaline obstacles of soil can be relieved; the fermentation product contains a large amount of bacillus subtilis, bacillus licheniformis and trichoderma harzianum, and can occupy the ecological niche of the root system through competition, optimize the rhizosphere environment and improve the biological enzyme activity of soil. Through the synergistic effect with the decomposed straw, the humic acid and the furfural residues, the rhizosphere microenvironment can be remarkably improved, decomposition and nutrient conversion of organic substances in soil are accelerated, the soil fertility is improved, root systems can better extend and absorb nutrients, plant growth is promoted, and the yield and quality of fruits are improved.

The invention relates to a preparation method of a drug intermediate 2-amino-3-hydroxypyridine, and relates to the technical field of medicines. Adding water, acid, sodium chloride, furfural and a sulfamate solution into the reaction kettle, and stirring for reaction; after the reaction is finished, carrying out centrifugal separation to obtain 2-imino-3-hydroxypyridine sulfonic acid; the preparation method comprises the following steps: adding water and 2-imino-3-hydroxypyridine sulfonic acid into a reaction kettle, heating and stirring to react, adding modified amino phosphonic acid type chelating resin, stirring and adsorbing, adjusting the pH value to 6-8 by using an inorganic alkali solution, centrifuging and drying to obtain 2-amino-3-hydroxypyridine; the modified amino phosphonic acid type chelating resin is prepared from amino phosphonic acid type chelating resin, 10 # white oil, aluminum chloride and 5-quinoline sulfonyl chloride. According to the method, the 2-amino-3-hydroxypyridine with higher yield and purity can be obtained, and the method has a good industrial application prospect.

The purpose of the present invention is to provide a novel beer-flavored non-alcoholic beverage in which flavor richness, and the harshness and astringency in the aftertaste are improved. According to the present invention, provided is a beer-flavored non-alcoholic beverage containing furfural and / or 5-methyl furfural, wherein the furfural concentration is 0.02 ppm to 70 ppm, the 5-methyl furfural concentration is 0.01 ppm to 70 ppm, and a real extract is 2.0 mass% or more. The present invention is advantageous in that, by containing furfural and / or 5-methylfurfural within a predetermined concentration range in a beer-flavored non-alcoholic beverage, it is possible to provide a beer-flavored non-alcoholic beverage in which flavor richness, and the harshness and astringency in the aftertaste are improved, and it is possible to meet diverse preferences and needs of consumers.

The invention provides a one-step furfural preparation method taking biomass as a raw material, and relates to the technical field of resource utilization of agricultural and forestry wastes. The method comprises the steps of raw material pretreatment, catalytic liquid preparation, hydrolysis dehydration reaction, solid-liquid separation, washing liquid reuse, product purification, catalytic liquid recovery and the like. The reaction is completed by adopting a closed reactor under the condition of not introducing external steam, so that the energy consumption is obviously reduced; the catalytic liquid is formed by compounding sulfuric acid and Lewis acid, so that the reaction efficiency is high; closed circulation of the catalytic liquid and recycling of water resources are realized through rectification and ceramic membrane filtration. The method is simple in process flow, low in pollution emission and suitable for green and efficient bran preparation of various hemicellulose raw materials such as corncobs and straw, the purity of the obtained product can reach 99% or above, and the method has good industrial application prospects.

The application discloses a method for synthesizing high-concentration furfuryl alcohol by using a double-enzyme coupling method, and the method comprises the following steps: mixing alcohol dehydrogenase freeze-dried bacterial powder and glucose dehydrogenase freeze-dried bacterial powder to serve as a catalyst, using furfural as a substrate, using glucose as a co-substrate, using NADP + or NAD + as a coenzyme, using a buffer solution with a pH value of 4-9 as a reaction medium to form a reaction system, and reacting completely under the condition of 20-50 DEG C and 400 rpm, then separating and purifying the reaction liquid to obtain furfuryl alcohol. The biological catalytic system is suitable for furfural with a concentration higher than 500 mM, and 100% conversion of 500 mM can be realized within 10 hours. The substrate continuous flow process is further used to eliminate the inhibition of aldehyde substrates on the biological catalyst, the concentration of the product can reach 1500 mM, and the highest space-time yield can reach 235 g / (L.d).

The utility model discloses a furfural residue utilization system which comprises a hydrolysis kettle, a residue storage warehouse, a stokehole stock bin, a drying flue, a crusher, a vibrating screen, a furnace top gas-residue cyclone separator, a boiler, a bag-type dust collector, an air preheater, an induced draft fan, a desulfurizing tower, a demister, a denitration device and a chimney, a slag discharging opening of the hydrolysis kettle is communicated with an inlet of the slag storage warehouse, a discharging opening of the slag storage warehouse is communicated with a feeding opening of the stokehole stock bin, a discharging opening of the stokehole stock bin is communicated with a feeding opening of the spiral conveyor, a discharging opening of the spiral conveyor is communicated with a feeding opening of the drying flue, and a discharging opening of the drying flue is communicated with a feeding opening of the crusher. A discharging port of the crusher is communicated with a feeding port of the vibrating screen, an undersize product outlet of the vibrating screen is communicated with a feeding port of the furnace top gas-slag cyclone separator, and a discharging port of the feeding port of the furnace top gas-slag cyclone separator is communicated with a fuel inlet of the boiler. According to the furfural residue recycling device, furfural residues can be efficiently treated, resource utilization of the furfural residues is achieved, and the combustion efficiency of the boiler is guaranteed.

The application discloses a nitrogen-doped carbon-coated three-metal catalyst and a preparation method and application thereof, and belongs to the field of catalyst preparation and application. The method adopts sucrose, melamine and metal salt as low-cost raw materials, and forms an alkaline environment with the assistance of sodium hydroxide. In the environment, melamine is hydrolyzed into cyanuric acid, which is complexed with sucrose metal ions to form a stable supramolecular aggregate precursor containing metal, and then realizes effective encapsulation of the metal in a high-temperature pyrolysis process. The synergistic effect of the three metal elements Co, Ni and Zn significantly improves the performance of the catalyst, so that CoNiZnO@NC-600 not only exhibits high conversion rate (98.4%) and selectivity (99%) in the reaction of hydrogenation conversion of furfural to furfuryl alcohol, but also has excellent cycle stability, thereby providing a new efficient method for the hydrogenation conversion of biomass-derived compounds.

The invention belongs to the field of catalytic hydrogenation reaction, and provides a method for preparing pentanediol from furfural. The method comprises the following steps: in the presence of a non-noble metal catalyst and isopropanol, contacting furfural with hydrogen for hydrogenation reaction to form a reaction product containing pentanediol; wherein the non-noble metal catalyst is a cobalt-copper binary catalyst and / or a cobalt-zirconium-copper ternary catalyst, and the non-noble metal catalyst is prepared by the method comprising the following steps: (1) carrying out precipitation reaction on a metal source and a precipitator in water, and aging to obtain a solid-liquid product; and (2) carrying out solid-liquid separation on the solid-liquid product, and washing, drying and calcining the obtained solid. According to the method, pentanediol can be prepared under the condition that the low-cost catalyst is adopted, and the yield of pentanediol can be increased.

The invention discloses a preparation method of a metal organic framework catalyst and application of the metal organic framework catalyst in biomass furfural hydrogenation, and belongs to the technical field of catalytic hydrogenation. The preparation method of the metal organic framework catalyst comprises the following steps: S1, dissolving cobaltous acetate, L-glutamic acid and phosphomolybdic acid in distilled water to obtain a solution marked as a solution A; dissolving 1, 3, 5-benzenetricarboxylic acid (BTC) in ethanol to obtain a solution B, pouring the solution B into the solution A, stirring, and centrifuging to collect a precipitate; and S2, calcining the precipitate in an inert atmosphere to obtain the metal organic framework catalyst. The specific steps of applying the catalyst to the furfural hydrogenation reaction are as follows: adding the prepared catalyst and furfural into deionized water, performing heating and pressurizing reaction through a hydrogenation reaction kettle to obtain a solution, extracting the solution with ethyl acetate, and performing GC quantitative detection on the product after the extraction reaction. The method is mild in reaction condition, has an efficient furfural hydrogenation effect, and can completely convert FFA within 2 hours under the condition that 50 mg of catalyst is added.

The utility model discloses furfural emptying waste gas collecting equipment, which belongs to the technical field of furfural emptying waste gas treatment and comprises a gas collecting chamber, a circulating spraying water tank and a spraying component are fixedly mounted in the gas collecting chamber, a gas distributing component is mounted in the gas collecting chamber simultaneously, and the gas distributing component consists of a connecting shell, a connecting pipe and a gas distributing pipe. The connecting pipe is fixedly mounted at the outer end of the connecting shell, the plurality of gas distribution pipes are uniformly and fixedly mounted at the inner end of the connecting shell, the gas distribution pipes are located between the circulating spraying water tank and the spraying assembly, and cleaning assemblies are movably mounted in the gas distribution pipes. And the gas distribution assembly can uniformly distribute the waste gas below the nozzles of the spraying assembly, so that the waste gas can be uniformly and fully contacted with the sprayed liquid, the heat exchange area of the sprayed liquid and the waste gas is increased at the moment, the heat exchange efficiency can be improved, the removal rate of harmful substances in the waste gas can also be improved, and residues of the harmful substances in the waste gas can be reduced.

The application discloses a saline-alkali soil improvement method and belongs to the technical field of saline-alkali soil improvement. The method comprises the following steps: in a screw extruder, humic acid and acrylic acid are grafted and polymerized in a reaction section to form humic acid grafted acrylic acid polymer; N-[2-(2-methoxy-5-nitro-phenoxy)ethyl]pyridine, [2-(3,4-dichlorophenoxy)-ethyl]hexadecyl diethyl ammonium bromide and furfural residue are sequentially added at the opening of a conveying section, and after passing through a mixing section, the mixture is extruded and granulated to obtain a conditioner; according to weight parts, the furfural residue is 70-90 parts, the humic acid grafted acrylic acid polymer is 10-25 parts, and the N-[2-(2-methoxy-5-nitro-phenoxy)ethyl]pyridine and [2-(3,4-dichlorophenoxy)-ethyl]hexadecyl diethyl ammonium bromide are 1-5 parts. The conditioner is applied to saline-alkali soil by being scattered in the soil during ploughing or being applied to the soil by hole planting during sowing, so that the organic matter content of the soil can be increased, the saline-alkali components can be separated from the roots of crops, the stress of the saline-alkali soil on the crops can be effectively reduced, and the yield of the crops can be improved.

To provide a new beer-taste fermented beverage improved in deterioration of flavor caused by reduction of sugar concentration while reducing the sugar concentration.SOLUTION: According to the present invention, there is provided a beer-taste fermented beverage having a saccharide concentration of 2. 0g / 100mL or less, wherein the beer-taste fermented beverage has a 5-methylfurfural concentration of 10ppb or more. The malt usage ratio of the beer-taste fermented beverage of the present invention can be 25% or more and 100% or less.SELECTED DRAWING: None

The utility model relates to the technical field of furfural processing, and discloses a desulfurization alkali preparation device for furfural processing, an adjusting device is composed of a motor, a gear, a rotating shaft, a fixing rod, a first spring, a sliding sleeve, a sleeve, a fixing cylinder, a sliding rod, a second spring, a fixing block, a limiting block and a fixing column, and the gear is fixedly mounted on an output shaft of the motor. According to the desulfurization and alkali preparation device for furfural processing, a limiting block is separated from a first clamping groove by pulling a pull ring, the limiting block can correspond to a second clamping groove through a sliding groove under the action of a first spring, the limiting block enters the second clamping groove under the action of a second spring, a fixing column and a rotating shaft can be fixed together, and a driving motor drives the limiting block to rotate. The fixed column can drive the desulfurization alkali preparation device main body to incline, so that a worker can conveniently clean the interior of the desulfurization alkali preparation device main body, the desulfurization alkali preparation device main body is more convenient to mount and dismount, and the practicability is high.

The present application relates to the technical field of corn fertilization, and provides a corn whole growth period precise fertilization method, which comprises the following steps: S1, applying base fertilizer containing nitrogen fertilizer, phosphorus fertilizer, potassium fertilizer, brown algal polysaccharide, calcium ammonium nitrate, zinc citrate, potassium humate and gamma-polyglutamic acid between corn rows when corn is sowed; S2, spraying leaf fertilizer containing potassium dihydrogen phosphate, magnesium sulfate, alginic acid and polyaspartic acid during the corn filling stage; the base fertilizer is slow-release fertilizer, and after granulation, the base fertilizer is coated with a polyester composite layer and a wax layer in sequence. According to the present application, the base fertilizer is made into double-layer coated slow-release particles and applied with sowing, the outer layer of furfural / wax forms a hydrophobic barrier to inhibit the burst release and salt damage during the seedling stage, and the inner layer of polyester composite layer forms controllable water channels and slowly hydrolyzes with time, so that nutrients are supplied in stages in a platform mode during the corn growth period, and precise fertilization and efficient utilization are achieved during the whole growth period.

The application discloses a preparation method of energy storage long-cycle COPNA carbon material, and belongs to the technical field of lithium battery energy storage materials, and is characterized by comprising the following steps: first, composite carbonaceous raw materials are heated to 100 DEG C, and after being uniformly stirred, a compounded crosslinking agent and a compounded catalyst are added, and the stirring is continued for 10-15 min until the mixture is uniformly mixed, and then a crosslinking reaction is carried out at 120 DEG C-160 DEG C, and the reaction time is 4-6 h, so that COPNA resin is obtained; the obtained COPNA resin is carbonized at 460 DEG C-520 DEG C, so that COPNA carbon material is obtained. The application has the beneficial effects that: oil slurry pitch, coking wax oil and ethylene tar are used as the composite carbonaceous raw materials, the proportion of the three is controlled to accurately control the polarizing structure proportion of the COPNA carbon material, the structural stability of the material is improved, and the long-cycle requirement is adapted; the COPNA carbon material can consider the conductivity and the regularity of the layered orientation by using the furfural-polyformaldehyde compounded crosslinking agent and the compounded catalyst, and the structure damage or the conductivity decline in the long-term cycle process is avoided.

The invention provides a furfural wastewater treatment method, which belongs to the technical field of wastewater treatment, and comprises the following steps: carrying out dry mixing on titanium dioxide powder, coking coal, alpha-Al2O3 and an auxiliary agent, adding into a silica sol mixed solution, and stirring to form a mixed suspension; uniformly coating polyurethane foam with the mixed suspension, standing, centrifuging, drying, heating, preserving heat and cooling in an inert gas environment to obtain a three-dimensional ceramic carbon composite material; uniformly mixing bentonite, the NH4NO3 modified Fe-Mn oxide composite material, iron powder and deionized water, kneading, and drying to obtain an iron-based composite material; fixing the three-dimensional ceramic carbon composite material in a reaction device, adding the iron-based composite material into the reaction device, introducing the furfural wastewater into the device for electrolytic reaction, adding calcium oxide powder, adjusting the pH value, flocculating, and filtering to complete the treatment of the furfural wastewater. The method can reduce the toxicity of the wastewater and improve the biodegradability of the wastewater.

The invention belongs to the technical field of high-molecular compounds, and particularly relates to reversible cross-linked POSS (Polyhedral Oligomeric Silsesquioxane) hybrid nanoparticles as well as a preparation method and application thereof. The preparation method comprises the following steps: adding vinyl silane and amino silane into methanol, uniformly stirring, adding hydrochloric acid, stirring, reacting, filtering, washing and drying to obtain T8-hydrochloride; the method comprises the following steps: dissolving T8-hydrochloride in methanol to obtain a T8-hydrochloride solution, and enabling the T8-hydrochloride solution to pass through anion exchange resin to obtain a T8-amino solution; adding maleic anhydride into the T8-amino solution, and reacting to obtain a reaction solution I; firstly adding furfural into the reaction liquid I, then adding an auxiliary agent and acetic acid, and reacting to obtain a reaction liquid II; adding a reducing agent into the reaction liquid II for reaction to obtain reaction liquid III; dehydrating the reaction liquid III to obtain a reversible cross-linked POSS hybrid nanoparticle crude product; and then carrying out post-treatment and drying to obtain the reversible cross-linked POSS hybrid nanoparticles. The method is mild in reaction condition, simple in reaction operation and suitable for large-scale production.

The present application provides a kind of for furfural refining device extraction oil recovery system, comprising: de-aldehyde tower A, de-aldehyde tower B, reagent pump, de-aldehyde tower top cooler and de-aldehyde tower top liquid separator, compared with prior art, the present application has the beneficial effects as follows: the double-tower design of de-aldehyde tower A and de-aldehyde tower B reduces the number of trays of each tower, which can reduce the tower pressure, reduce the partial pressure of furfural at the bottom of stripping tower, facilitate the separation of furfural and extraction oil;Second, it can adapt to different furfural content of extraction oil, when the furfural content in extraction oil is low, only de-aldehyde tower A can be used, when the furfural content in extraction oil is high, de-aldehyde tower A and de-aldehyde tower B can be used simultaneously, to improve the flexibility of the whole system, inject alkaline reagent before extraction oil enters stripping tower, remove acidic substances in extraction oil, make furfural more easily and extraction oil separate.

The present application relates to furan preparation technical field, specifically to a kind of furfural decarbonylation catalyst, preparation method and utilize the catalyst preparation furan process.The catalyst includes carrier and active component supported on it, with the mass of the carrier, Pt 0.2%‑0.6%, Co 4%‑8%, Al2O3 74%‑85%, ZrO2 11%‑16%, CeO2 4%‑13%.The present application adopts structural aid ZrO2 and CeO2 to modify Al2O3 carrier, obtains acid moderate composite oxide carrier, can avoid the influence of furfural polymerization and the activity and stability of catalyst;Using Co as auxiliary active component, under the premise of reducing the dosage of main active component Pt, ensure catalytic effect, not only reduce the cost of catalyst, more importantly, it can improve the conversion rate of furfural and furan selectivity in furfural decarbonylation reaction, ensure high furan yield.

This invention discloses a method for the synthesis of furfural and ethanol from green coconut (Cocos nucifera L.) husk. The method involves chemical reaction for furfural production and a biological fermentation for ethanol synthesis. In the chemical step, the green coconut husk undergoes acid hydrolysis in a high-pressure reactor, yielding furfural. The residual waste from this step is then utilized as a substrate for fermentation by Saccharomyces cerevisiae, producing ethanol. The integrated approach efficiently converts the cellulosic and hemicellulosic components of the green coconut husk into two industrially valuable compounds, furfural and ethanol, from a single agricultural waste stream. The invention provides a cost-effective and environmentally sustainable method for resource utilization and waste reduction.