996 results about "Furfural" patented technology

The invention relates to the technical field of flame retardants, in particular to a phosphorus-nitrogen synergistic flame-retardant biomass flame retardant and application thereof. A conventional reaction type phosphorus-nitrogen flame retardant is huge in structure and large in steric hindrance and cannot be completely dissolved in an epoxy resin material system, the obtained flame-retardant epoxy resin is poor in transparency, and the mechanical property is greatly reduced. In order to solve the problems, the invention provides the phosphorus-nitrogen synergistic flame-retardant biomass flame retardant which is obtained by sequentially carrying out simple one-pot synthesis reaction on furfural and furfural derivatives with 2-amino-1, 3, 4-thiadiazole and DOPO, and the flame retardant is simple in structure, small in steric hindrance, easy to completely dissolve in epoxy resin, good in flame retardancy and good in flame retardance. The obtained flame-retardant epoxy resin is better in transparency, flame retardance and mechanical property.

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.

Provided in the present application are a bio-based fluoride-free waterproof agent, and a preparation method therefor and the use thereof. In the present application, firstly, a bio-based monomer is added into a reaction; secondly, a rosin-based amino acid surfactant is introduced, which is a bio-based ampholytic surfactant, has the advantages of good decontamination, resistance to hard water and being stable to an acid and an alkali and has the performances of sterilization, corrosion prevention, static electricity resistance, etc.; and finally, a lignin-furfural bio-based resin is added after the reaction, which resin is a new furfural bio-based resin, can be uniformly cross-linked on the surface layer of a yarn to adhere fiber ends to the yarn, and has a relatively strong adhesive force, such that the resin can bond the fibers, thereby limiting the movement of the fibers. The raw materials of the fluoride-free waterproof agent prepared in the present application are derived from bio-based products and are completely biodegradable in the natural environment, such that the fluoride-free waterproof agent is environmentally friendly and safe, thereby increasing the regenerative and environmentally friendly values of the product and having significant social benefits and wide market prospects.

The invention relates to the chemical field of efficient catalytic conversion of biomass platform compounds into high-added-value chemicals, and particularly provides a preparation method of a flower-shaped nickel aluminum oxide and application of the flower-shaped nickel aluminum oxide in preparation of furfuryl alcohol through catalytic transfer hydrogenation of furfural. The preparation method mainly comprises the following steps: dissolving 0.01 mol of aluminum nitrate, 0.02 mol of nickel nitrate and 0.084 mol of urea in 60 ml of deionized water, stirring at room temperature for 1 h to form a clear solution, transferring the clear solution into a lining of a hydrothermal kettle, aging at 140 DEG C for 7 h, naturally cooling to room temperature, and repeatedly washing with deionized water until the pH value of supernate is 7; and dispersing the separated green muddy precipitate in 200ml of methanol, stirring at room temperature for 2 hours, filtering and washing, and drying at 60 DEG C for 24 hours. And grinding the obtained hydrotalcite precursor into powder, putting the powder into a quartz boat, and carrying out high-temperature calcination for 2 hours in argon flow of 60 ml / min at the temperature of 500 DEG C to finally obtain the grey green solid catalyst. The metal oxide prepared by the invention has the characteristics of uniform components, rich acid-base sites and the like as a catalyst, and has the characteristics of simple preparation method, no need of reduction, environment friendliness and the like when being applied to industrial production. Therefore, when the catalyst is applied to a reaction for preparing furfuryl alcohol through furfural transfer hydrogenation, efficient conversion of furfural can be realized, the conversion rate can reach 100%, and the selectivity is 92.1%.

The invention discloses a load type regenerated asphalt mixture composite regenerant, which is composed of a porous carrier and a regenerant loaded in the pore channel of the carrier, and the mass ratio of the porous carrier to the regenerant is 5: 1. The regenerant is prepared from the following raw materials in parts by weight: 90 to 110 parts of furfural extract oil, 5 to 10 parts of triallyl isocyanurate, 2 to 6 parts of triethoxysilane, 4 to 10 parts of a three-dimensional porous material, 3 to 8 parts of a penetrant, 20 to 30 parts of toluene-2, 4-diisocyanate, 10 to 20 parts of hydroxyl-terminated polybutadiene, 5 to 12 parts of a plasticizer and 5 to 10 parts of a tackifier. The regenerant is loaded in pores of the porous carrier, so that the deformation resistance of asphalt mortar can be improved, the aging resistance of asphalt can be effectively improved, and the regenerant can improve the high-temperature stability, low-temperature stability and water stability of the thermally-regenerated asphalt mixture and can improve the skid resistance and sound absorption performance of the thermally-regenerated asphalt mixture. Meanwhile, the economic cost is saved.

The present invention belongs to the field of material preparation, and discloses a preparation method and application of a composite material of Pd, cerium oxide and silicon dioxide with a controllable hierarchical catalytic structure. Cerium oxide rich in oxygen vacancies is used as a carrier, and Pd species are loaded by impregnation, and then dispersed on the surface of acidic silicon dioxide with a high specific surface area. Finally, a Pd / CeO2 / SiO2 material with a controllable hierarchical catalytic structure is prepared by high-temperature calcination and reduction, and is used to catalyze the hydrogenation conversion reaction of furfural. The preparation method of the present invention is simple, green and environmentally friendly, highly active, stable, cheap and easy to obtain, and can efficiently catalyze the hydrogenation conversion of furfural, and has good industrial application prospects.

The invention discloses a method for preparing 1, 5-pentanediol by catalyzing furfural conversion, and belongs to the technical field of biomass conversion. The method for preparing 1, 5-pentanediol by catalyzing furfural conversion comprises the following steps: furfural is taken as a raw material, ethanol is taken as a solvent, hydrogenation ring-opening reaction is carried out under the action of a hydrogenation catalyst, 1, 5-pentanediol is obtained, the hydrogenation catalyst comprises the following raw materials in percentage by mass: 0-1 wt% of Fe, 1-10 wt% of Cu, 20-40 wt% of Co and 50-80 wt% of La, and the content of Fe is not 0. The metals in the hydrogenation catalyst have a synergistic effect, so that furfural can be efficiently and highly selectively converted into 1, 5-pentanediol. According to the method, trace Fe is added into the hydrogenation catalyst, so that the problem that byproducts such as tetrahydrofurfuryl alcohol are generated from furfural is solved, and the selectivity of 1, 5-pentanediol is greatly improved.

The invention discloses a P / N / S-containing DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) derivative flame retardant for a V0-grade insulating material as well as a preparation method and application of the flame retardant, and belongs to the technical field of The method comprises the following steps: in a solvent, carrying out a reaction on furfural and 2-amino-5-ethylbenzothiazole at 60-80 DEG C; after the reaction is completed, obtaining an intermediate product, and then adding DOPO; reacting at 80-100 DEG C to obtain a flame retardant; the molar ratio of the furfural to the 2-amino-5-ethylbenzothiazole is 1: (1-2), and the molar ratio of the DOPO to the intermediate product is 1: (1-2). The flame retardant is used in epoxy resin taking 4, 4 '-diaminodiphenylmethane as a curing agent. The flame retardant contains phosphorus, nitrogen and sulfur, can realize phosphorus-nitrogen-sulfur synergistic flame retardance, and has a good flame retardant effect after being applied to an epoxy resin material. The release of heat and smoke in the combustion process of the epoxy resin can be effectively inhibited, the formation of a carbon layer is promoted, and the flame retardant property is remarkable.

The invention discloses a method for preparing furfuryl amine by reductive amination of biomass-based furfural, which comprises the following steps: adding furfural, a catalyst, ammonia water and a solvent into a closed reaction kettle in proportion, replacing air in the reaction kettle with high-purity hydrogen, and reacting in an oil bath pan for a period of time to obtain a target product furfuryl amine, the nano-catalyst provided by the invention is a nitrogen-doped porous hollow carbon sphere loaded nano bimetallic catalyst, takes noble metal and non-noble metal as a metal active center together, and has adjustability of macroscopic size and microstructure at the same time; the method has the advantages of simple reaction system, mild conditions, no pollution to the environment, high efficiency, energy conservation, low cost, few byproducts, high yield, high selectivity and the like, the furfural is efficiently converted into furfuryl amine at low temperature and low pressure within a short time, the used heterogeneous catalyst is stable and easy to recover, a new thought and direction are provided for enterprise production and scientific research, and the method is suitable for industrial production. The method has great significance on development and utilization of biomass-based furfural.

The invention discloses a saline-alkali soil improvement and disease resistance double-effect controlled release fertilizer and a preparation method thereof. The fertilizer comprises 18-22% of biochar, 12-18% of furfural residues, 8-12% of cow dung compost and 6-10% of potassium humate. 5-7% of aluminum sulfate, 4-6% of sulfur and 3-5% of zeolite; the microbial inoculum comprises the following components in percentage by weight: 1.5 to 2.5 percent of saline-alkaline bacillus, 0.8 to 1.2 percent of bacillus subtilis and 0.8 to 1.2 percent 8-12% of a sodium polyacrylate coating, 4-6% of a sulfur coating and 1-3% of polyglutamic acid; 0.8 to 1.2 percent of humic acid chelated iron, 0.8 to 1.2 percent of algal polysaccharide and 0.8 to 1.2 percent of urease inhibitor; 0.8 to 1.2 percent of zinc sulfate, 0.5 to 1.0 percent of manganese sulfate and 0.5 to 1.0 percent of borax. The fertilizer can reduce the pH and conductivity of soil, increase the organic matter content of the soil and effectively improve the physicochemical properties of the soil, meanwhile, by adding the microbial agent, the disease resistance of crops can be effectively improved, the morbidity and disease index of the crops can be reduced, and nutrient release of the fertilizer has a sustained and controlled release characteristic; the initial release rate and the cumulative release rate of nitrogen are both lower than those of common chemical fertilizers, and the cumulative release rate of nitrogen is moderate within 60 days, so that the nutrient requirements of crops in different growth stages can be met.

The invention discloses a method for efficiently preparing furfural and glucose from forest grass biomass. The method comprises the following steps: mixing a forest grass biomass raw material, a molten salt hydrate and an organic solvent, and carrying out a pretreatment reaction to obtain a furfural-containing pretreatment solution and pretreatment residues; mixing the pretreated residues, sulfuric acid and molten salt hydrate, and then performing hydrolysis reaction to obtain hydrolysate containing glucose; the method for preparing furfural and glucose from forest grass biomass provided by the invention is simple, convenient to operate, environment-friendly, short in time, high in yield, economical and efficient, and has a wide industrial application prospect.

The invention provides a method for detecting furfural in insulating oil based on terahertz time-domain spectroscopy, and relates to the technical field of aging detection of insulating oil of electrical equipment, and the method comprises the following steps: determining the content of furfural in insulating oil in different aging states through a chromatographic analysis method, and preparing samples with corresponding concentrations; the method comprises the following steps: scanning a sample by using a transmission-type terahertz time-domain spectroscopy system according to liquid characteristics and terahertz spectral characteristics of the insulating oil to obtain time-domain spectral data of the sample; adopting a quantum chemistry simulation method to simulate absorption and reflection characteristics of furfural molecules in a terahertz frequency band, and matching a vibration mode, a rotation energy level and terahertz wave band absorption characteristics in a real spectral signal; and the content of furfural in the insulating oil is quantitatively detected by reconstructing the terahertz time-domain signal. According to the method, rapid and non-contact detection of trace furfural in the insulating oil is realized by analyzing the terahertz spectrum characteristics, and an effective evaluation means is provided for the insulation aging degree of the transformer.

The invention belongs to the technical field of soil improvement, and relates to a soil saline-alkali improver as well as a preparation method and application thereof. The invention provides a soil saline-alkali modifier. The soil saline-alkali modifier is composed of a shell slow-release layer, a middle conditioning layer and an internal functional layer, the internal functional layer is prepared from a saline-alkali soil improving fungicide, biochar and a granulation adhesive; the middle conditioning layer is composed of a conditioner, a first slow-release agent and a first solvent; the shell slow-release layer is prepared from humic acid, furfural residues, a calcium ion compound, a second slow-release agent and a second solvent; the calcium ion compound is at least one of phosphogypsum, desulfurized gypsum, calcium chloride and calcium sulfate; the conditioner is at least one of coumarin, resveratrol and catechin. A multi-layer slow-release structure is constructed, through a multi-layer slow-release mode, all the improvement components make contact with the saline-alkali soil in sequence, and the excellent improvement effect is achieved.

The invention discloses a boron-containing copper-based three-dimensional metal organic framework material as well as a preparation method and application thereof, and belongs to the technical field of fine chemical engineering. The preparation method comprises the following steps: preparing Zn-based MBON from zinc salt, boric acid and imidazole through a hydrothermal method, and then completely replacing the zinc component with copper to obtain Cu-based MBON, namely the boron-containing copper-based three-dimensional metal organic framework material. The specific surface area of the material is large, and a three-dimensional nano flower-shaped unique structure is formed. The prepared material is used as a catalyst for furfural electro-hydrogenation and carbon dioxide reduction reaction, the diffusion efficiency of reactants (such as furfural and CO2) can be enhanced, rapid desorption of products (such as furfuryl alcohol and ethylene) can be promoted through the surface capillary action, meanwhile, generation of by-products caused by excessive reaction is inhibited, and the selectivity of target products is improved.

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 belongs to the field of coupling blending combustion of a thermal power plant, and discloses a system and a method for blending combustion by utilizing biomass furfural residues, through the synergistic effect of a blending combustion pretreatment system and an intelligent control system, accurate and efficient control of the whole furfural residue blending combustion process is realized, and acidity is monitored in real time by utilizing an acidity sensor in a stirrer; the adding amount of a neutralizer is intelligently adjusted, full neutralization reaction is ensured, excessive use is avoided, the screw extruder detects initial moisture through a moisture sensor and automatically adjusts current to optimize extrusion strength and speed, the dryer is monitored in real time through a temperature sensor, stable temperature control is achieved, and the production efficiency is improved. Meanwhile, the waste gas recovery device preheats materials to be dried through heat exchange, efficient recovery of waste heat is achieved, the filtrate treatment device recovers valuable components such as furfural through distillation, extraction and filtration processes, and resource waste is reduced. Material loss and energy loss are reduced through a closed pipeline and automatic conveying, and finally it is ensured that the moisture and acidity of the dried furfural residues reach the standard, and the quality is uniform and stable.

The utility model discloses a distillation tower for furfural production, which comprises a heat exchange condensation mechanism arranged at the upper end in a tower body, a purification mechanism arranged at the upper end outside the tower body, a temperature sensor and a pressure sensor distributed in the tower body, a pneumatic pump arranged on one side of the tower body, a main control computer arranged below the side surface of the tower body, and an extension cylinder arranged at the bottom end in the tower body, laminate mechanisms are distributed between the side face of the extending cylinder and the inner side wall of the tower body, a rotating shaft frame is arranged in the extending cylinder, a driving motor is arranged on the bottom face of the tower body, annular grooves are formed in the laminate mechanisms, and stirring rods are arranged on the side face of the upper end of the rotating shaft frame and correspond to the annular grooves. According to the utility model, the electric heating pipes are arranged on the plurality of layers of division laminates, so that the heating temperature of each layer can be controlled at different temperatures, and furfural liquid entering the tower body can be uniformly and fully heated by arranging the stirring rods in a matched manner; and meanwhile, multiple sets of inclined plates of the heat exchange condensation mechanism are matched with a heat exchange coil pipe, so that steam heat energy can be fully recycled, and heat energy loss is avoided.

A functional microbial organic fertilizer for improving saline-alkali land, and its preparation method and application, belong to the field of fertilizer technology. In order to solve the technical problem that the high salt ion content in saline-alkali soil has multiple adverse effects on plant growth, the present invention provides a functional microbial organic fertilizer for improving saline-alkali land, which is prepared by a functional microbial agent prepared from Bacillus amyloliquefaciens, Copperbacterium insecticide, Trichoderma harzianum, Halobacterium gesneri and Bacillus halogenide, and a functional microbial carrier organic fertilizer added with furfural residue and citric acid residue. The functional microbial organic fertilizer provided has the functions of increasing the abundance of saline-alkali soil microorganisms, improving soil physical and chemical properties, regulating soil pH, increasing the proportion of soil aggregates, and increasing the content of available phosphorus and available potassium. The functional microbial organic fertilizer provided by the present invention can be used to effectively improve saline-alkali soil.

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 discloses pediococcus acidilactici screening and application of pediococcus acidilactici in reducing allergenicity of whey and improving flavor, and belongs to the technical field of whey processing. The invention provides a Pediococcus acidilactici BC37, and the preservation number of the Pediococcus acidilactici BC37 is GDMCC No: 66262. The Pediococcus acidilactici BC37 can be used for preparing a Pediococcus acidilactici strain. When the pediococcus acidilactici BC37 is used for preparing the fermented whey, beta-lactoglobulin and lactose in the whey can be effectively degraded, and the degradation rates respectively reach 49.93% and 15.74%; meanwhile, after whey is fermented by the pediococcus acidilactici BC37, high-content flavor substances such as furfural, butyric acid and ethyl caprate are generated. Therefore, the pediococcus acidilactici BC37 provided by the invention has a great industrial application prospect in preparation of fermented whey products with low sensitization and unique flavor.

The invention discloses a method for preparing biochar through low-temperature carbonization of furfural residues and application, and the method comprises the following steps: pretreatment of furfural residues: carrying out dynamic drying by using superheated steam generated by a biomass boiler, so that the moisture content is reduced to be less than or equal to 25%; carrying out particle reinforced molding, namely mixing the furfural residues with corn straws and wheat straws, and carrying out granulation molding; carrying out segmented low-temperature carbonization, sequentially carrying out drying preheating, ash removal and carbonization stages on the particles, and enabling the hardness of the carbonized particles to reach 8MPa; by-products are recycled, pyrolysis non-condensable gas is used for boiler combustion, condensate can be used as liquid organic fertilizer, heat treatment activation is carried out, and carbonization is carried out for 2 h in a nitrogen environment at the temperature of 600 DEG C; washing and drying: washing with hydrochloric acid (HCl), and drying at 80 DEG C for 24 hours; the method solves the technical problems of high energy consumption in the furfural residue carbonization process and limited application range of carbonized products in the prior art, also solves the problems of limited adsorption capacity and difficult recovery of common charcoal, and is suitable for the environmental protection fields of heavy metal wastewater treatment, pollution remediation and the like.

The invention discloses an extraction-free in-situ intelligent detection system and method for furfural in transformer oil. According to the method, the in-situ surface enhanced Raman detection method containing the liquid core optical fiber is designed, coupling of a transformer oil sample pool can be achieved by introducing the liquid core optical fiber into a detection system, oil way circulation is achieved, an analysis model of the furfural content and the furfural Raman characteristic peak in sample oil is established through a deep learning convolutional neural network, and the detection accuracy is improved. High-stability, high-sensitivity and high-speed extraction-free in-situ detection of furfural in transformer oil is realized.

The invention discloses a Fe3O4 (at) FeMgAl-LDH (layered double hydroxide) magnetic catalyst. The Fe3O4 (at) FeMgAl-LDH magnetic catalyst comprises FeMgAl-LDH and Fe3O4, the FeMgAl-LDH is prepared by taking a solution A and a solution B as raw materials and adopting a coprecipitation reaction; the solution A is a mixed aqueous solution of Fe < 3 + >, Al < 3 + > and Mg < 2 + >, and the solution B is a mixed aqueous solution of OH <-> and CO3 < 2->. By adding the magnetic Fe3O4, the specific surface area of the catalyst is increased, the dispersity and catalytic activity of the catalyst are improved, the raw material conversion rate and the product yield are remarkably increased, and recycling of the catalyst is facilitated. The invention discloses an application of a Fe3O4-coated FeMgAl-LDH magnetic catalyst in catalysis of a condensation reaction of furfural and acetone. Under the optimal reaction condition, the conversion rate of furfural reaches 100%, and the total yield of a primary condensation product FAc and a secondary condensation product F2Ac is 99.8% or above.

The furfural gas-residue separation device comprises a condensation box, an air separator and a spraying separator, a cyclone separator is connected with the spraying separator through a first air pipe, the spraying separator is connected with the condensation box through a second air pipe, the cyclone separator comprises a cyclone separation cylinder, and the cyclone separation cylinder is connected with the spraying separator through a second air pipe. A first air return pipe is arranged in the center of the upper end in the cyclone separation cylinder; the spraying separator comprises a spraying separation cylinder, an inner rotating cylinder is arranged in the spraying separation cylinder, a plurality of suspension wires are arranged at the upper end in the spraying separation cylinder and the lower end of the inner rotating cylinder, a plurality of suspension beads are arranged on each suspension wire, a second air return pipe is arranged in the center in the inner rotating cylinder, and a spraying pipe is arranged on one side of the second air return pipe; the furfural gas residues are subjected to multi-stage separation in various forms of centrifugal gravity, centrifugal spraying and shaking filtering, and layer-by-layer pushing is performed, so that the separation effect of the furfural gas residues is improved, and the purity of furfural gas is improved; in addition, in the spraying separation process, furfural gas residues can be pre-cooled at the same time, and the condensation efficiency is improved.

The invention discloses a liquid organic hydrogen storage material and application thereof, and belongs to the technical field of liquid hydrogen storage. The liquid organic hydrogen storage material is an organic compound with a diol structure, the organic compound with the diol structure is one of 1, 5-pentanediol, diethylene glycol and diethanol amine, the liquid organic hydrogen storage material is low in melting point, high in boiling point, safe and low in toxicity, hydrogen is generated through liquid-phase dehydrogenation lactonization, the available hydrogen content is about 3.8%, and the 1, 5-pentanediol structure is one of 1, 5-pentanediol, diethylene glycol and diethanol amine. The 1, 5-pentanediol can be prepared from a biomass platform compound furfural through hydrogenation and hydrogenolysis, and the source is rich; the diethylene glycol and the diethanol ammonia are bulk chemical products, easy to obtain and low in price, and the liquid organic hydrogen storage material has high industrial application value.

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 discloses an Escherichia coli endogenous alcohol dehydrogenase EcYjgB mutant and application thereof. The mutant is obtained by performing any one of the following mutations (a) to (c) on Escherichia coli endogenous alcohol dehydrogenase EcYjgB as shown in SEQ ID NO.1: (a) mutating serine at the 200th site into arginine; (b) the serine at the 199th site is mutated into aspartic acid, and the serine at the 200th site is mutated into arginine; and (c) the serine at the 199th site is mutated into aspartic acid, the serine at the 200th site is mutated into arginine, and the asparagine at the 240th site is mutated into tryptophan. The mutant is used for efficiently catalyzing reduction of HMF or furfural to respectively synthesize BHMF and furfuryl alcohol, so that the purposes of improving the production efficiency, reducing the production cost and improving the environmental effect are achieved.

The invention relates to the technical field of catalysts, and particularly discloses a Cu-based catalyst for preparing 1, 2-pentanediol and a preparation process of the 1, 2-pentanediol. The Cu-based catalyst used for preparing 1, 2-pentanediol comprises 6-72% of a copper salt, 20-70% of a carrier, 4-12% of a transition metal oxide and 4-12% of a polymeric nitrogen-containing organic ligand, and the polymeric nitrogen-containing organic ligand is polypyrrole or polyaniline. The preparation process of the 1, 2-pentanediol comprises the following steps: mixing furfural, isopropanol and a Cu-based catalyst for preparing the 1, 2-pentanediol, adding the mixture into a high-pressure reaction kettle, and reacting for 10-14 hours in a hydrogen atmosphere of 2.8-3.2 MPa and at the temperature of 145-155 DEG C under continuous stirring to obtain the 1, 2-pentanediol. According to the Cu-based catalyst, the combination effect between the carrier and Cu can be enhanced, so that active Cu loaded on the carrier is more stable in the reaction process, and the catalytic performance of the Cu-based catalyst is improved.

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 invention belongs to the technical field of furan synthesis, and particularly relates to a catalyst for synthesizing furan through furfural decarbonylation and a preparation method and application thereof.The catalyst comprises a carrier and active components loaded on the carrier, and the active components comprise a main active component and an auxiliary active component; the main active component is located on the outer layer of the carrier, and the main active component is metal palladium; the auxiliary active component is embedded into the carrier, and the auxiliary active component is alkali metal oxide. According to the preparation method of the catalyst, the loading capacity of Pd is reduced, the problem that the catalyst is rapidly inactivated due to the fact that the raw material furfural is easy to coke is solved through the special structure of Pd, and the activity, selectivity and stability of the catalyst are improved.