1130 results about "Synergistic catalysis" patented technology

The invention belongs to the field of nano-drug preparations, and discloses a multifunctional nano-enzyme platform and a preparation method and application thereof, and the multifunctional nano-enzyme platform is mainly composed of a nano-enzyme, a carrier material and a targeting substance. The synthesis of the nano-enzyme, the loading of the nano-enzyme on a carrier material and the modification of a targeting substance on the surface of the nano-enzyme are carried out through methods such as stirring synthesis, coprecipitation, strong acid oxidation, chemical reduction, covalent binding, a solvothermal method and physical adsorption. The targeting substance on the surface of the nano-enzyme platform can be accurately and efficiently positioned to an inflammation part, the meta-acid microenvironment of the inflammation part enables the targeting substance and the carrier material to be subjected to structural depolymerization, so that various nano-enzymes are released, and the nano-enzymes not only realize self-cascade and synergistic catalysis enhancement effects of the enzymes at the inflammation part, but also can be used for preparing the nano-enzyme. And a substrate self-circulation catalysis system is also formed, so that the effect of efficiently relieving and treating various inflammation-related diseases is achieved.

The invention relates to a catalyst for ethylene oxide ring-opening polymerization and a preparation method thereof, and belongs to the technical field of high polymer material synthesis, and the catalyst is a composite structure based on a silicon dioxide nanoparticle loaded bimetal organic complex; a modified nitrogen-containing polydentate ligand is prepared by adopting a special method, is coordinated with metal ions through covalent bonds and is loaded on silicon dioxide nanoparticles; by utilizing the high dispersity and stability of the silicon dioxide nanoparticles and the synergistic catalytic effect of the bimetal organic complex, the catalytic effect is effectively improved, the polymerization process is accelerated, the polymerization stability is enhanced, the polymerization molecular weight is improved, and the distribution is narrow.

The invention discloses a high-entropy oxide for synergic nitrogen removal and catalysis as well as a preparation method and application thereof, and belongs to the technical field of material preparation, the high-entropy oxide is a single solid solution phase formed by five or more metal elements of Fe, Co, Ni, Cu, Mn, Ti and Ce and an oxygen element, the configuration entropy of the high-entropy oxide is greater than or equal to 1.5 R, R is a gas constant, and R is an oxygen constant. The mole fraction of each metal element is 0.1-0.3, and the sum of the mole fractions of the metal elements is 1. According to the high-entropy oxide with the synergistic nitrogen removal and catalysis effects and the preparation method and application thereof, a synergistic catalysis system is constructed through the high-entropy oxide and silicon carbide, and the high-entropy oxide has the multiple advantages of being high in nitrogen removal efficiency, high in stability, simple in process, environmentally friendly and wide in application range; the removal rate of total nitrogen and key nitrogen pollutants can reach 90% or above in the seawater high-salt environment, and the environment-friendly emission requirement is met.

The invention belongs to the field of nanomaterial piezoelectric-photocatalysis, and relates to preparation and piezoelectric-photocatalysis application of an oxygen vacancy-containing bismuth ferrite nanomaterial. The oxygen vacancy-containing bismuth ferrite nano-material is successfully prepared through a hydrogen calcination method, on one hand, the light absorption range and the light absorption intensity of the bismuth ferrite nano-material are remarkably improved due to the existence of oxygen vacancies, the absorption and utilization efficiency of sunlight is higher, and on the other hand, the oxygen vacancies serve as active sites on the surface of a photocatalyst, so that the photocatalytic activity of the photocatalyst is improved. The activity of the catalyst can be effectively improved, so that the piezoelectric photocatalytic performance is remarkably improved. The efficiency of 2-hour piezoelectric-optical synergistic catalytic degradation of organic pollutants (rhodamine B and tetracycline hydrochloride) is 96.5% and 72.17% respectively, and is 4.1 times and 1.7 times that of a pure-phase bismuth ferrite nano material. Meanwhile, the prepared oxygen vacancy-containing bismuth ferrite has relatively strong magnetism, is convenient to recycle in application, and is strong in operability, simple and convenient in process flow and wide in application prospect.

The invention provides a preparation method and application of a cobalt-based catalyst, and relates to the technical field of chemical production. The cobalt-based catalyst includes cobalt, a transition metal element, and a Group IIIA element other than aluminum. Transition metal elements and IIIA group elements except aluminum are introduced into the cobalt-based catalyst, and the electronic structure and active sites of the cobalt-based catalyst are changed. The method not only can cooperate with catalytic reaction and promote the formation and conversion of intermediates, but also can enhance the adsorption and activation capability on substrates, reduce the reaction activation energy and guide the reaction to be carried out along a specific path. Finally, the effect of efficiently harvesting the 2-methyl pentamethylene diamine and the 3-methylpiperidine at the same time is achieved.

The invention discloses a composite microbial enzyme preparation and a preparation method thereof, and belongs to the technical field of bioplastic degradation. The enzyme preparation is synergistically constructed through a temperature-sensitive MOFs / Schiff base network composite carrier and black phosphorus quantum dots, FeO (at) ZIF-8 is taken as a core, and PNIPAM is grafted on the surface to form temperature-responsive MOFs; constructing a three-dimensional network carrier through Schiff base crosslinking of the CMC and the CNF; the complex enzyme is loaded on MOFs pore channels and then is embedded in a carrier network together with the black phosphorus quantum dots. The temperature-sensitive MOFs open pore channels to release enzyme when the compost is heated, and the Schiff base network dissociates secondary released enzyme under an acidic condition; the black phosphorus quantum dots promote enzyme activity and strengthen carrier response through a photothermal effect; the compound enzyme contains cutinase, alkaline lipase, neutral lipase, alpha-amylase, saccharifying enzyme, cellulase, laccase and protease, and can synergistically degrade PLA, PBAT and starch-based plastic. According to the invention, dual environment response controlled release, photo-thermal synergistic catalysis and synergistic degradation of the enzyme preparation are realized, and the plastic degradation period is shortened under the composting condition.

The invention discloses an ammonia decomposition hydrogen production catalyst and a preparation method and application thereof, and relates to the field of catalysis, the catalyst comprises a carrier and an active component, and the carrier is doped porous nanorod-like cerium dioxide; the active component is alloy nanoparticles formed by ruthenium and other metals, and the ruthenium loading amount accounts for 0.8-2% of the total mass of the catalyst. The preparation process of the catalyst comprises the following steps: respectively preparing the carrier and the active component, anchoring the active component on the carrier in a highly dispersed manner in an in-situ loading manner, and enabling the active component of the catalyst and the carrier to form a strong synergistic catalysis effect by using a segmented heating gradient reduction process so as to show the characteristics of low-temperature high activity and high stability. Under the reaction conditions that the normal pressure is 0.1 MPa, the temperature is 450 DEG C and the air speed is 24000mL. G <-1 >. H <-1 >, the ammonia decomposition conversion rate reaches 99.5%, and the catalyst can stably run for 1000h without obvious inactivation.

The invention provides a cerium oxide photo-thermal synergistic catalytic material loaded with a metal promoter as well as a preparation method and application of the cerium oxide photo-thermal synergistic catalytic material. The cerium oxide photo-thermal synergistic catalytic material loaded with the metal promoter comprises a cerium oxide nanocrystal and the metal promoter loaded on the surface of the cerium oxide nanocrystal, the exposed crystal face of the cerium oxide nanocrystal comprises a {111} crystal face, and the area of the {111} crystal face accounts for more than 50% of the total area of the outer surface of the crystal face; the mass fraction of the metal cocatalyst is 0.1-2wt% of the mass of the cerium oxide. The catalytic material provided by the invention takes cerium oxide with a {111} crystal face as an exposed special crystal face as a carrier, photons can be captured and charges can be separated more efficiently, and phonons further promote deep trap state charge release. Meanwhile, the metal additive is added and cooperates with cerium oxide with exposed special crystal faces for catalysis, so that the catalytic effect is remarkably improved, and efficient catalytic combustion of methane is achieved under the mild condition.

The invention relates to the technical field of organic synthesis, and provides a method for efficiently preparing 1, 3-cyclohexanedione through selective hydrogenation, which comprises the following steps: preparing hexagonal mesoporous silicon oxide by taking tetraethoxysilane as a silicon source and dodecylamine as a structure-directing agent, compounding the hexagonal mesoporous silicon oxide with titanium oxide to obtain a carrier, and taking palladium as a catalytic active component to prepare a catalyst I; preparing a copper-based coordination polymer by taking copper chloride dihydrate and phenylacetylene as raw materials; preparing a catalyst II by taking nickel as a catalytic active component; the method comprises the following steps: reacting resorcinol with hydrogen under the combined action of alkali, water, a catalyst I and a catalyst II, and then acidizing and recrystallizing to obtain the target product 1, 3-cyclohexanedione. According to the method, resorcinol is taken as a raw material, the self-made catalyst I and the self-made catalyst II are adopted for concerted catalytic hydrogenation, 1, 3-cyclohexanone with relatively high purity is prepared, and the catalysts are high in catalytic activity, easy to separate and still have very good catalytic performance after being recycled for multiple times.

The invention discloses a method for degrading polystyrene (PS) plastic and upgrading and recycling the PS plastic into benzoic acid based on nano MnO2 photocatalytic ozonation, and belongs to the technical field of solid waste recycling. The method comprises the following steps: firstly, mixing PS plastic fragments with nano MnO2 and an organic solvent, then simultaneously introducing ozone into a reaction system at normal temperature and normal pressure, and irradiating with light. Through synergistic catalysis of light and ozone, molecular chains of the PS plastic can be efficiently and selectively broken and oxidized, and finally the PS plastic is directionally converted into benzoic acid with high additional value. After the reaction is finished, a benzoic acid product can be obtained through simple separation, concentration and purification steps. The method provided by the invention realizes high-valued recycling of the waste PS plastic under mild conditions, solves the problems of high energy consumption, complex products, easy generation of secondary pollution and the like in a traditional treatment method, and has the outstanding advantages of green process, efficient reaction, high product value and the like.

The invention provides a method for promoting acquisition of clean fuel by light / sound concerted catalytic degradation of waste plastics and upgrading and conversion thereof, which comprises the following steps: uniformly mixing g-C3N4, cadmium acetate and thioacetamide according to a predetermined proportion, pouring into a reaction kettle, placing in a high-temperature oven for a predetermined time, centrifuging, cleaning and drying to obtain a catalyst, the method comprises the following steps: loading a catalyst on the surface of aerogel, hydrogel or non-woven fabric to obtain an MTSJA-loaded catalyst, treating waste plastic with NaOH, adding the MTSJA-loaded catalyst, stirring under irradiation of a xenon lamp, starting ultrasound for reaction, and carrying out light / sound synergistic catalytic degradation on the waste plastic. According to the method, energy consumption is not needed, toxic and harmful gas is not generated, the purposes of energy conservation and environmental protection can be achieved, meanwhile, carbon dioxide in water can be catalytically reduced to generate clean energy such as methane in the process of degrading the waste plastic, and further obtaining of the energy is promoted.

The invention discloses an immunosensor for detecting cytokine interferon gamma through electrochemiluminescence as well as a preparation method and application of the immunosensor. The immunosensor comprises a three-electrode system consisting of an immunoelectrode, a reference electrode and a counter electrode, the immunoelectrode is a VMSF modified electrode confined to cerium dioxide nano enzyme and platinum nano particles, and is obtained by covalently immobilizing an IFN-gamma antibody and closing a non-specific site; when the immunosensor is used for detection, a solution containing luminol is used as an electrolyte. The CeO2 and the PtNPs which are confined in the nano channel show a remarkable synergistic catalysis effect. Compared with direct modification on a plate electrode, CeO2-PtNPs has higher catalytic activity and stability. The sensor provided by the invention is used for INF-gamma detection, has the advantages of high sensitivity, low detection limit and wide detection range, does not need complex pretreatment and separation processes during detection, reduces the detection cost, is simple to operate, and is suitable for large-scale application.

The invention discloses an application of a zirconium sulfate solid superacid and a nickel-carbon catalyst in concerted catalysis of hydrodeoxygenation of a lignite model compound. Under the mild conditions of 140-180 DEG C, 1 MPa H2 and 2-4 h, SO4 < 2-> / ZrO2 and 10% Ni / AC are used as catalysts, and 100% conversion rate of lignite model compounds such as diphenyl ether and the like and 100% high selectivity of cyclohexane are achieved. The solid superacid catalyst and the metal catalyst are physically mixed to synergistically catalyze hydrodeoxygenation of the lignite model compound, and a new thought is provided for clean and efficient utilization of coal.

The invention discloses a metal supported activated carbon catalyst for efficiently preparing aquacide dichloride and application of the metal supported activated carbon catalyst. The catalyst is prepared by taking activated carbon as a carrier, loading Lewis acid active components such as aluminum ions, zinc ions, iron ions, copper ions and the like through an impregnation method, and carrying out vacuum pyrolysis activation treatment at 300-600 DEG C. The catalyst synergistically catalyzes a nucleophilic substitution reaction of a pyridine derivative and alkyl halide in an aprotic polar solvent such as acetonitrile or nitrobenzene, and synthesis of diquat dichloride can be realized under the conditions that the temperature is 100-180 DEG C and the pressure is 1-3 MPa. In a reaction system, the mass ratio of the pyridine derivative to the catalyst to the solvent is 1: (0.01-0.05): (5-8), and real-time monitoring and regulation are performed through an online infrared spectrum, a liquid chromatograph and a gas chromatograph-mass spectrometer. The purity of the product is more than 99% after the product is subjected to filtration, recrystallization with an ethanol-water mixed solvent and vacuum drying. The catalyst provided by the invention has the characteristics of high activity, strong stability and recoverability, obviously improves the atom economy of the reaction, simplifies the production process, reduces the energy consumption and pollution, and is suitable for large-scale industrial production.

The invention discloses a two-dimensional metal oxide composite reduced graphene oxide burning rate catalyst, which is prepared by the following steps: uniformly grinding glucose, ammonium nitrate and transition metal nitrate, calcining at high temperature to generate a two-dimensional metal oxide nanosheet, mixing the two-dimensional metal oxide nanosheet with surfactant modified reduced graphene oxide powder, and sintering at high temperature to obtain the two-dimensional metal oxide composite reduced graphene oxide burning rate catalyst. And transferring into a high-pressure hydrothermal kettle for solvothermal reaction, so that the reduced graphene oxide and the two-dimensional metal oxide nanosheet are compounded to form the composite burning rate catalyst with a 2D-2D structure. Two two-dimensional materials are compounded through a solvothermal method, the defects of accumulation of reduced graphene oxide and aggregation of the two-dimensional metal oxide due to high surface energy are effectively avoided, meanwhile, the high conductivity of the reduced graphene oxide is utilized, the synergistic catalysis effect of the metal oxide and the carbon material is enhanced, and the performance of the composite material is improved. The composite material has a good catalytic effect on the thermal decomposition process of ammonium perchlorate.

The invention discloses a Ni-based bimetallic multifunctional catalyst and a preparation method and application thereof, and belongs to the technical field of catalysis. The general formula of the Ni-based bimetallic multifunctional catalyst is Ni-M-Al2O3, M in the formula represents one or three of Cr, Mn, Fe, Co or Cu, and the preparation method of the Ni-based bimetallic multifunctional catalyst comprises the following steps: firstly synthesizing a Ni-M-Al hydrotalcite precursor oxide with a layered porous structure, and then preparing the Ni-M bimetallic multifunctional catalyst through an efficient in-situ desolvation method. According to the method disclosed by the invention, the multi-functionality and multi-center concerted catalysis of the catalyst, including an alkaline site, an acid site and a bimetallic hydrogenation active site, is fully utilized, and the target product dimethyl succinate is prepared with high selectivity under a mild condition through the concerted catalysis of bimetallic alkali sites and the interaction of strong metal carriers.

The invention discloses a gas-sensitive material based on double noble metal doped holmium iron oxide and application of the gas-sensitive material to detection of hydrogen sulfide in a sulfur-containing ore body exploration environment, and relates to the technical field of gas-sensitive materials. HoFeO3 is used as a substrate material, and two elements of Au and Pt are used for doping modification of the HoFeO3 to prepare the gas sensitive material based on double noble metal doped holmium iron oxide. Au and Pt are combined to perform doping modification on HoFeO3, a synergistic effect is achieved on improving the temperature stability of the gas-sensitive material, the sensitivity of the gas-sensitive material in a high-humidity environment can be improved, in addition, due to the synergistic catalysis effect of Au and Pt, an energy barrier of H2S adsorption reaction can be remarkably reduced, surface electron transfer and reaction activity are promoted, and the sensitivity of the gas-sensitive material in a high-humidity environment is improved. Therefore, the working temperature is reduced, the response value is improved, and the method is suitable for detecting hydrogen sulfide gas in a sulfur ore body exploration environment.

The invention discloses a synthesis process of vitamin C ethyl ether, and belongs to the technical field of vitamin C derivative synthesis. The process comprises the following steps: taking L-ascorbic acid as a raw material, adding acetone, anhydrous cupric sulfate and acetyl chloride, and reacting for 1-2 hours at 38-40 DEG C under the protection of nitrogen to obtain a vitamin C protector; adding alkali, water, an alkylating reagent and absolute ethyl alcohol into the reaction product, reacting for 3 hours at 75-78 DEG C under the protection of nitrogen, and performing reduced pressure distillation to obtain a vitamin C protector etherate; and finally, hydrolyzing by using cationic resin, removing a protecting group, and recrystallizing by using ethyl acetate to obtain the vitamin C ethyl ether. Through the synergistic catalysis of anhydrous cupric sulfate and acetyl chloride, the reaction time is remarkably shortened, and the product purity and yield are improved. Through detection, the product purity is more than 99.5%, the total yield can reach more than 80%, and an efficient and economical method is provided for industrial production of vitamin C ethyl ether.

The invention discloses a phase transfer catalyst of metal ion complexing crown ether for efficiently preparing aquacide dichloride and application of the phase transfer catalyst. The catalyst is prepared by taking crown ethers as 18-crown-6 and dicyclohexyl-18-crown-6 ether and complex ions as lewis acid active components such as potassium ions, lithium ions, cobalt ions, copper ions and the like through a direct chemical method. The catalyst synergistically catalyzes a nucleophilic substitution reaction of a pyridine derivative and alkyl halide in an aprotic polar solvent such as acetonitrile or nitrobenzene, and synthesis of diquat dichloride can be realized under the conditions of 60-140 DEG C, normal pressure and no oxygen. The mass ratio of the pyridine derivative to the catalyst to the solvent in a reaction system is 1: (0.001-0.05): (5-8), and real-time monitoring and regulation are performed through an online infrared spectrum, a liquid chromatograph and a gas chromatograph-mass spectrometer. The purity of the product is more than 99% after the product is subjected to filtration, recrystallization with an ethanol-water mixed solvent and vacuum drying. The catalyst provided by the invention has the characteristics of high activity, strong stability and recoverability, obviously improves the atom economy of the reaction, simplifies the production process, reduces the energy consumption and pollution, and is suitable for large-scale industrial production.

The invention provides a ceramic fiber tube and a preparation method thereof, the ceramic fiber tube is provided with a tube body, the tube body is provided with multiple fiber filter paper layers formed by overlapping fiber cotton layers, and the tube body comprises a denitration area and a CO removal area which are arranged along the wall thickness direction; the denitration area comprises a fiber filter paper layers, the CO removal area comprises b fiber filter paper layers, and a + b is greater than or equal to 100; the pipe body is overlapped between the adjacent fiber filter paper layers to form nanoscale pores, and the pore diameter of the nanoscale pores is 10-50nm; and the CO removal area at least further comprises a CO catalyst which is loaded in the pores and on the surface of the fiber cotton in a nano-scale manner. Different active components are loaded on the carrier structure according to functional areas, and the number of layers of the fiber filter paper layers and nanoscale pores are configured, so that the three-in-one design of partition loading, gradient pores and collaborative catalysis is realized, the technical bottleneck of collaborative purification of multiple pollutants in complex flue gas is overcome, and the application prospect is wide. And high efficiency, economical efficiency and long service life are achieved.

The invention discloses a Ni-based'bimetallic-alkali-acid 'multifunctional hydrotalcite catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalytic synthesis of fine chemicals. According to the invention, a Ni-N-MO-Al hydrotalcite precursor oxide (a main metal is Ni, a second metal N is one of Cr, Mn, Fe, Co or Cu, and M in an alkali metal oxide MO is one of Mg, Ca, Sr, Ba, Cd or Zn) with a layered porous structure is synthesized, and then the Ni-based'bimetal-alkali-acid 'multifunctional hydrotalcite catalyst is prepared through an efficient in-situ desolvation method. According to the method, the multi-center synergistic effect of the catalyst, including Ni-N bimetallic hydrogenation active sites, MO alkaline sites and Lewis acid sites of an Al framework, is fully utilized, and the target product dimethyl succinate is prepared with high selectivity under mild conditions through bimetallic-alkali-acid multi-site synergistic catalysis and strong metal carrier interaction.

The invention discloses a preparation method of a NiMnCeOx nano hollow sphere catalyst and application of the NiMnCeOx nano hollow sphere catalyst in photothermal synthesis of biomass-based synthesis gas, a Ni / MnxCe1-xO2 catalyst with a nano hollow sphere structure is prepared by utilizing a hydrothermal technology, and the loading amount of active metal Ni is 5%-15%. The catalyst shows relatively high catalytic activity in a photo-thermal synergistic CO2 reduction reaction, and the dispersity of the active metal Ni can be effectively improved and the sintering of the catalyst in the reaction process can be inhibited through strong interaction (SMSI) between the transition metal Ni and the carrier and a confinement effect of specific morphology. The preparation method of the catalyst has the advantages of simple process, low cost and the like, and accords with the concept of green sustainable development; and the method shows higher application potential in the field of synthesizing high-added-value chemicals from greenhouse gas CO2 through photo-thermal concerted catalysis, and has great significance in energy conservation and environmental protection.

The invention provides a preparation method and application of an Au-loaded bismuth-based semiconductor photothermal catalyst, and relates to the technical field of catalysts, a Bi-based precursor is prepared, and the Bi-based precursor is any one of BiVO4, Bi2WO6, BiOCl, BiOBr, BiOI, Bi2MoO6 and Bi2O3; loading Au onto the Bi-based precursor by adopting a homogeneous reduction method, a deposition-precipitation method, a photodeposition method or an Au sputtering method to obtain an Au-loaded bismuth-based catalytic material; and loading the Au-loaded bismuth-based catalytic material on 0.1-10mm quartz microspheres by adopting an initial wet impregnation method, and carrying out vacuum drying on the quartz microspheres to obtain the Au-loaded bismuth-based semiconductor photo-thermal catalyst for the reaction of preparing ethane by photo-thermal synergistic catalysis of methane coupling.

The invention discloses a method for detecting glucose on the basis of cascade catalysis of cerium dioxide / gold nano cluster-Prussian blue nano enzyme (AuNCs-CeO-HMPB). The material is prepared by compounding cerium dioxide (CeO) with similar glucose oxidase activity and hollow Prussian blue nanoparticles (AuNCs-HMPB) modified by gold nanoclusters with similar peroxidase activity through a hydrothermal assembly method. In the presence of glucose, CeO catalyzes oxidation of glucose to generate gluconic acid and H2O2, then AuNCs-HMPB synergistically catalyzes decomposition of newly generated H2O2 to generate high active oxygen species, further a colorless 3, 3 ', 5, 5'-tetramethyl benzidine (TMB) color developing agent is oxidized to generate obvious color change, and based on the cascade catalytic reaction, the enzyme-free glucose colorimetric sensor is successfully constructed. The sensor shows excellent detection performance on glucose under optimized conditions (pH = 4.0, 50 DEG C), the linear detection range is 10.00-90.00 [mu] mol / L, and the detection limit is 2.1 [mu] mol / L (S / N = 3).

The invention discloses a microwave catalysis and plasma combined waste gas treatment system and method. The system is formed by connecting a pretreatment module, a pretreatment cavity module, a main catalysis cavity module, a tail end purification module and an intelligent control module in series. The pretreatment module adopts two-stage condensation and multi-stage dust removal and is provided with a humidity particle return valve; the pretreatment cavity completes low-temperature oxidation under the cooperation of multi-frequency microwaves and a catalyst; the main catalytic cavity integrates a pulse corona-enhanced plasma discharge structure and a 2.45 / 5.80 GHz double-frequency microwave source, and cooperates with a catalyst to deeply crack VOCs. The tail end module achieves waste heat recovery and fine purification through double heat exchangers and double activated carbon adsorption, and a terminal monitors emission online through Fourier infrared. And the intelligent control module predicts and adjusts the microwave power, the discharge frequency and the valve position in real time based on a long short-term memory (LSTM) network algorithm, namely LSTM, so that the system keeps high-efficiency, low-energy-consumption and stable operation under the conditions of high humidity and multi-component VOCs (Volatile Organic Compounds).

The invention provides a method for producing fuel oil through pyrolysis of fuel oil and photo-thermal concerted catalysis plastics. The method comprises the following steps: (1) pyrolyzing plastic to obtain pyrolysis steam; (2) carrying out catalytic reaction on the pyrolysis steam in the presence of a catalyst under illumination to obtain a mixed product; and (3) condensing the mixed product to obtain the fuel oil. According to the method, the high-quality fuel oil is prepared by taking plastic or waste plastic as a raw material, the problem of increasing shortage of fossil fuel is relieved while environmental pollution is reduced, and meanwhile, the selectivity of gasoline and aviation oil in pyrolytic oil is effectively improved, so that the quality of the oil is remarkably improved.

The invention provides a preparation method of a carbon-supported nano zero-valent iron catalytic material based on multi-metal catalysis, and relates to the technical field of catalytic materials. The preparation method of the carbon-supported nano zero-valent iron catalytic material based on multi-metal catalysis comprises the following steps: step 1, preparing raw materials; step 2, pretreating a carbon carrier; step 3, preparing a multi-metal precursor solution; step 4, carrying out impregnation reaction; a synergistic catalytic system is formed by introducing various metals, so that the catalytic activity of the catalytic material is remarkably improved. Main catalytic metals such as iron, cobalt and nickel interact with auxiliary metals such as molybdenum and tungsten, so that the performance of the material is enhanced. The composite of the carbon nanofibers and the porous graphite is used as the carbon carrier, the advantages of the carbon nanofibers and the porous graphite are combined, a larger specific surface area and a more stable structure are provided for metal loading, and the stability of the catalytic material is improved.

The present invention discloses a titanium dioxide / manganese dioxide / carbon composite catalyst supported on a macroscopic carrier, a preparation method thereof and an application. The preparation process is as follows: titanium dioxide is added to deionized water, stirred, potassium permanganate is added, and stirring is continued; a carbon source is added, after stirring evenly, a macroscopic carrier is added, ultrasonic mixing is carried out, and reaction is carried out under water bath conditions. After the reaction is completed, it is cooled and dried to obtain the product. Compared with the existing formaldehyde removal materials, through the mutual synergistic effect among the components of the composite catalyst in the present invention, that is, the photo-thermal synergistic catalytic oxidation under light conditions and the adsorption / catalytic oxidation under dark conditions act together to mineralize formaldehyde into environmentally harmless water and carbon dioxide. In addition, the preparation method of the present invention has a simple operation process and low raw material prices. Combining the support on a macroscopic carrier and the synergistic effect among the composite catalysts, it has the characteristics of a wide range of applicable scenarios, convenient subsequent recovery, and all-weather formaldehyde removal, and has broad application prospects.

The present invention provides a microplastic degradation device based on acoustic-photothermal synergistic catalysis, which first promotes a Fenton-like activation oxidation reaction between a water sample to be tested and an activated oxidant by acoustic wave catalysis through an acoustic mold component, and simultaneously promotes the above-mentioned Fenton-like activation oxidation reaction by photothermal catalysis after being irradiated with light through a photothermal catalytic layer. Compared with the existing microplastic degradation technology, the microplastic degradation device based on acoustic-photothermal synergistic catalysis can simultaneously utilize more catalytic reaction modes and have a synergistic effect, and can achieve degradation treatment with lower energy consumption and shorter degradation time in the field of microplastic degradation, thereby effectively improving the degradation efficiency of microplastics in the water sample to be tested.

The invention discloses a method for degrading and recycling waste plastics based on a deep eutectic solvent, and belongs to the technical field of waste plastic resource recycling. The method comprises the following steps: treating waste PET plastic by using a decolorizing agent, carrying out catalytic alcoholysis on the waste PET plastic and ethylene glycol at 180-200 DEG C under normal pressure by using a choline chloride / ethylene glycol / zinc acetate ternary eutectic solvent as a catalyst and a solvent to generate a bis (2-hydroxyethyl) terephthalate monomer, and synthesizing the waterborne polyurethane with isophorone diisocyanate. The preparation method comprises the following steps: mixing waterborne polyurethane with an acrylamide-acrylic acid copolymer and a ternary eutectic solvent, and carrying out UV photopolymerization to prepare the dual-network eutectic gel. The method has the characteristics that the ternary eutectic solvent and Zn < 2 + > synergistically catalyze the degradation of the waste PET to obtain the bis (2-hydroxyethyl) terephthalate monomer with the purity of more than or equal to 96.1% and the yield of more than or equal to 95.3%, and then the eutectic gel with the tensile strength of more than or equal to 1.5 MPa is prepared through photopolymerization, and the temperature is reduced by 60-80 DEG C compared with that of the traditional process. The method effectively solves the problems of high energy consumption, more waste acid and low yield of the traditional waste PET plastic recovery technology.