39results about How to "Good potential application prospects" patented technology

The invention relates to nano FeS2 materials, and particularly relates to a preparation method of graphene oxide / iron disulfide composite nano particles. According to the preparation method of the graphene oxide / iron disulfide composite nano particles, ferrous chloride tetrahydrate (FeCl2.4H2O) and sulfur powder are used as raw materials, are dissolved in water together with surfactant polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP), and then mixed with graphene oxide under a certain pH (potential of hydrogen) condition; the obtained mixed solution is arranged in a reaction kettle and sealed, is held for 12 hours to 24 hours in a constant-temperature box at 180 DEG C to 200 DEG C by using a hydrothermal method, is cooled to normal temperature, stood and separated, centrifugally washed and dried, finally the graphene oxide / iron disulfide composite nano particles can be obtained.

The invention relates to a lignin-based two-dimensional carbon nano-material as well as a preparing method and an application thereof and belongs to the technical field of carbon materials. The two-dimensional carbon nano-material is prepared by the following steps of: after mixing lignin and a nitrogen-containing compound, carrying out pyrolysis and carbonization at an atmosphere, and then, washing and drying a pyrolysed and carbonized product. The two-dimensional carbon nano-material is of a curly flaky-layer structure, the lateral dimension of the flaky layer is 0.5-5mum, the thickness of the flaky layer is 10-50nm, and the specific surface area is larger than 400m<2> / g. By utilizing the regulating function of the nitrogen-containing compound on a carbonization process, a two-dimensional carbon nanometer structure is directly pyrolysed and synthesized without using additives, such as a catalyst, a hard template and an activating agent, or complicated instruments and equipment, the preparing process is simple, and industrial production and application can be realized. Besides, the prepared lignin-based two-dimensional carbon nano-material is stable in structure, and when is applied to the aspect of electromechanical energy storage, has a remarkable double-electric-layer capacitance property. A prepared supercapacitor has the advantages of being high in energy density, great in cycling property and the like.

The invention discloses titanium dioxide nanoribbons exposing a {010} crystal face and a preparation method thereof; an exposed crystal face, except two end faces, of the titanium dioxide nanoribbons is the {010} crystal face (the exposure rate of the {010} crystal face is close to 100%). The preparation method comprises titanate nanoribbons mainly exposing a {010} crystal face are used as raw material and are roasted at high temperature to prepare the product. The preparation processes of the titanate nanoribbons mainly exposing the {010} crystal face mainly includes four processes: hydrothermal reaction, alcohol assisting self-assembly reaction, water washing and drying. With adopting of the preparation method, not only is the exposure rate of the high-activity {010} crystal face improved, but also the specific surface area of titanium dioxide is increased. The preparation process has no need of use of fluorine-containing reagents and is an environmental-friendly green preparation method. With adopting of the preparation method, the preparation temperature of the titanium dioxide nanoribbons is reduced, and the production energy consumption and the production cost are effectively reduced. At the same time, because the titanium dioxide nanoribbons prepared by the method and exposing nearly 100% of the {010} crystal face have excellent photocatalytic activity, the titanium dioxide nanoribbons can be widely applied in the fields such as photolysis of water, environmental restoration, sensors and nano devices building.

The invention discloses a red mud doped manganese and cerium catalyst used for flue gas denitrification, and a preparation method thereof. The preparation method comprises the following steps: 1) putting red mud into water, stirring to evenly disperse, standing, washing precipitates to be neutral, and drying and grinding to obtain a required red mud sample RM; 2) mixing soluble manganous salt and cerium salt with the mixture of ethyl alcohol and water, stirring until the manganous salt and the cerium salt are completely dissolved to obtain mixed solution, then, adding the red mud sample RM into the mixed solution, stirring for set time, meanwhile, adding precipitant into the mixed solution, and regulating to a set pH (Potential of Hydrogen) value; 3) after the mixture stands for ageing set time, separating precipitates from a liquid phase, and washing a solid phase to be neutral; 4) after the washed solid phase is dried and roasted, obtaining required RM catalyst. The red mud is taken as a raw material to prepare the red mud catalyst with high denitrification activity. The preparation method for the red mud has the advantages of being simple, low in energy consumption and light in environment pollution, and has a potential application prospect in an NH3-SCR catalytic denitrification field.

The invention relates to nanometer level flower-shaped zinc oxide. The nanometer level flower-shaped zinc oxide is spiauterite type zinc oxide and has the nanometer level flower-shaped appearance, the size of the nanometer level flower-shaped zinc oxide is 500 to 800nm, each petal consists of nanometer bars with smaller size, and the specific surface area is 90-110m<2> g<-1>. The nanometer level flower-shaped zinc oxide provided by the invention has the characteristics that the appearance is in a flower shape, the specific surface area is large, and the like. The nanometer level flower-shaped zinc oxide has higher activity in the methyl orange photocatalytic degradation, and potential application values are realized in sewage treatment. The invention discloses a preparation method of the nanometer level flower-shaped zinc oxide.

The invention provides a method for generating autologous retinal stem cells and autologous retinal cells by reversely differentiating human body cells. The method comprises the following steps of: culturing the human body cells in steps in a culture medium which contains different plant extracts and proteins, so that the human body cells are reversely differentiated to generate the autologous retinal stem cells and then continuously generate a plurality of autologous retinal cells. Tens of billions of a first generation of autologous retinal stem cells are generated within 2 to 3 weeks. The plant and protein-induced human autologous retinal stem cells have the same cell specific phenotype as human natural retinal stem cells and various cell differentiation abilities. The autologous retinal stem cells and the autologous retinal cells have good application prospect in the field of treating diseases, such as retinal pigment degeneration, and also have good potential application prospect in the fields of regenerative medicine and autologous tissue organ engineering. The autologous retinal stem cells and the autologous retinal cells have the possibility to be produced massively in an industrialization way.

The invention relates to a nickel metaphosphate micro-nanomaterial as well as a preparation method and an application thereof. The micro-nanomaterial has a nano sheet array structure, and the lamellar thickness of nano sheets is less than 20nm. The nickel metaphosphate micro-nanomaterial is prepared through the preparation method comprising the following steps: dissolving a soluble nickel salt and weak base molecules in a solvent to react together with carbon cloth to obtain a nickel-containing precursor / carbon cloth complex, and then performing heat treatment on the nickel-containing precursor / carbon cloth complex and a phosphate compound in an inert atmosphere to obtain the nickel metaphosphate micro-nanomaterial. Based on a structure duplication thought, the invention adopts a two-step method to achieve preparation of a micro-nanostructure and growth of a nickel metaphosphate crystal phase, respectively, the preparation of the nickel metaphosphate micro-nanomaterial with a single crystal phase is achieved, the experiment operation is simple and safe, and scale production and application can be achieved. The prepared nickel metaphosphate micro-nanomaterial has a significant pseudocapacitance characteristic, and the specific capacitance is greater than 2000F / g when the discharge current is 1A / g, so that the nickel metaphosphate micro-nanomaterial has a good potential application prospect in the aspect of electrochemical energy storage.

The invention provides a culture solution and method for producing a hemopoietic stem cell by reversely splitting a somatic cell and application of the culture solution. The culture solution for producing the hemopoietic stem cell by reversely splitting the somatic cell is a skin composed of a plurality of kinds of plant extractives and proteins by mixing and can be used for reversely inducing and splitting the human somatic cell so that the hemopoietic stem cells with a magnitude order of hundreds of billions are produced within two weeks; and the plant and protein inductive hemopoietic stem cells have cell specific phenotypes which are similar with those of human natural hemopoietic stem cells so that the hemopoietic stem cells not only have a plurality of kinds of application potentials for disease treatment and anti-aging health protection, but also are applicable to establishing a novel hemopoietic stem cell library to permanently preserve the natural hemopoietic stem cells for a long period. Compared with the traditional cord blood / bone marrow / peripheral hemocytoblast library, the novel autologous hemopoietic stem cell has the advantages of large number of produced / preserved stem cells, good monitor probability of the quality of the stem cells, wide application range and the like.

The invention discloses a preparation method of a konjac glucomannan / heteropoly acid composite proton conductive film. The method is characterized in that the method comprises the following steps: adding konjac glucomannan and polyvinyl alcohol into deionized water, stirring at room temperature until solids are dissolved, and adjusting the pH value of an obtained solution to 9.5-10.5; heating to 55-65DEG C, heating for 2-4h, allowing the heated solution to stand for 24h, and casting on a clean glass plate to form a film; drying the glass plate having the film at 60-80DEG C, and peeling the film to prepare a base film; immersing the base film in an aqueous solution of heteropoly acid for 8-24h, and drying at 60-80DEG C; and immersing the dried base film in deionized water, and taking out to prepare the konjac glucomannan / heteropoly acid composite proton conductive film. The konjac glucomannan / heteropoly acid composite proton conductive film prepared in the invention has a good application prospect in the fields of direct methanol fuel cells and hydrogen oxygen fuel cells.

The invention belongs to the technical field of hydrogen concentration detection and monitoring, and discloses a hydrogen sensor and application thereof. According to the sensor, room-temperature ionic liquid N,N,N-trimethyl-N-sulfobutyl ammonium hydrogen sulfate is used as an electrolyte, and platinum black is used as a catalyst. The response current of the sensor and the concentration of H2 are in a linear relation, and the sensor not only has high sensitivity, good selectivity and fast response recovery, but also has stable performance in a high-humidity environment. The sensor provided by the invention overcomes the problem that an electrochemical gas sensor cannot be applied to high humidity, and has a good potential application prospect on high-temperature and high-humidity ships. Moreover, the sensor does not need an inner support and a liquid storage tank, the structure is more simplified, the size is smaller, an anti-vibration layer is additionally arranged, and the sensor has better firm anti-vibration performance.

The invention relates to a lignin-based two-dimensional carbon nano-material as well as a preparing method and an application thereof and belongs to the technical field of carbon materials. The two-dimensional carbon nano-material is prepared by the following steps of: after mixing lignin and a nitrogen-containing compound, carrying out pyrolysis and carbonization at an atmosphere, and then, washing and drying a pyrolysed and carbonized product. The two-dimensional carbon nano-material is of a curly flaky-layer structure, the lateral dimension of the flaky layer is 0.5-5mum, the thickness of the flaky layer is 10-50nm, and the specific surface area is larger than 400m<2> / g. By utilizing the regulating function of the nitrogen-containing compound on a carbonization process, a two-dimensional carbon nanometer structure is directly pyrolysed and synthesized without using additives, such as a catalyst, a hard template and an activating agent, or complicated instruments and equipment, the preparing process is simple, and industrial production and application can be realized. Besides, the prepared lignin-based two-dimensional carbon nano-material is stable in structure, and when is applied to the aspect of electromechanical energy storage, has a remarkable double-electric-layer capacitance property. A prepared supercapacitor has the advantages of being high in energy density, great in cycling property and the like.

The invention relates to a boron nitride hollow tube with a tube wall formed by directional coverage of lamellas, and a preparation method of the boron nitride hollow tube mainly comprises the following steps: taking ammonia water, boric acid and magnesium nitrate as raw materials, and carrying out hydrothermal reaction to obtain a boron-containing precursor; then, calcining the boron-containing precursor in a nitrogen-containing atmosphere to obtain a nitridation product; then, mixing the nitridation product with ammonium chloride, and putting the mixture into a high-pressure reaction kettle for reaction to obtain the boron nitride with the hollow structure. According to the invention, the boron nitride hollow tube with the tube wall formed by directional coverage of the lamellas is prepared by a high-pressure synthesis process after high-temperature nitridation of a boron-containing precursor for the first time.

A method for producing organic macromolecule nano tube by sodium sulfide and perchlorobenzoacenaphthylene relates to a organic macromolecule nano tube. The method comprising: dissolving the sldium monosulfide in the absolute ethyl alcohol to get solution A, adding the perchlorobenzoacenaphthylene into the solvent to get mixture B, ultrasonic treatment to the mixture B; feeding solution A and B in a container for ultrasonic treatment, heating the container in the reaction vessel at least 1 hour at constant temperature, cooling, getting mixture C; taking the underlayer red deposit of the mixture C, washing at least a time with toluene, water and ethanol. Wherein, sldium monosulfide sulfur atoms: perchlorobenzoacenaphthylene chlorin atoms=1:2-3 according to the molar ratio, and solvnt:absolute ethyl alcohol=1:16-32, the solvent is chosen from one of toluene, cyclohexane or tetrahydrofuran.

The invention provides a method allowing reverse differentiation of human somatic cells for generation of autologous pancreatic stem cells and autologous pancreas islet. The method is as follows: culture solutions containing extractives of different plants and different protein components are used to culture human somatic cells step by step, which enables the somatic cells to generate autologous pancreatic stem cells through reverse differentiation, and autologous pancreas islet is generated through further culture. The method provided in the invention enables the first generation of autologous pancreatic stem cells and autologous pancreas islet at a magnitude order of tens of billions to be generated within two to three weeks. The plant and protein-induced human autologous pancreatic stem cells have similar cell specific phenotypes and a plurality of cell differentiation capability as those of human natural pancreatic stem cells; the autologous pancreatic stem cells and autologous pancreas islet cells have immense potential both in the application field of treatment of pancreatic diseases like insulin deficiency type diabetes and in the engineering field of autologous pancreatic tissue; the invention is also applicable to establishment of novel autologous pancreatic stem cell libraries and long-term permanent preservation of autologous pancreatic stem cells.

The invention provides an amyloid fiber ferric hydroxide heterogeneous Fenton catalyst as well as a preparation method and application thereof, and relates to the field of sewage treatment. The preparation method comprises the following steps: dissolving beta lactoglobulin in water to obtain a protein solution with a mass fraction of 2-5%, adjusting the pH value of the protein solution to 2.0-4.0, placing the protein solution in a water bath with a temperature of 80-100 DEG C, and carrying out a reaction for 5-10 h to obtain a protein fiber solution; dissolving ferric iron salt in the protein fiber solution, and adjusting the pH value to 2.0-7.0 to obtain the amyloid fiber ferric hydroxide heterogeneous Fenton catalyst. According to the invention, beta-lactoglobulin is used as a cocatalyst, and ferric hydroxide is loaded in situ to obtain the heterogeneous composite catalyst. The catalyst can efficiently degrade organic pollutants under acidic, especially neutral conditions, does not produce iron mud, and is a practical catalyst with good potential application prospects.

The invention discloses a dicationic comb type polyarylether ion exchange membrane and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a bisphenol monomer; (2) carrying out polycondensation on decafluorobenzene oxadiazole, a bisphenol monomer and biphenol as monomers to prepare a derivative of polyoxadiazole arylether, and carrying out bromination and quaternization reaction to prepare the dicationic comb type polyarylether ion exchange membrane; the side group quaternary ammonium salt of the AEMs is separated from a main chain by phenoxy, so that the hydrolysis of OH <-> on the main chain can be reduced, and the alkali resistance of the AEMs is improved; in addition, due to the side group structure of the dication structure, the IEC of the membrane is improved, quaternary ammonium salt can be self-assembled into an effective ion channel, the advantages of long side chain type and dense functional anion exchange membranes are combined, and the ion exchange membrane has a good potential application prospect.

The invention discloses an amphiphilic high-temperature-resistant silicon-based fiber plugging agent and a preparation method thereof, and belongs to the technical field of plugging in oil field projects. According to the amphiphilic high-temperature-resistant silicon-based fiber plugging agent, ethyl orthosilicate is taken as a basis, the ethyl orthosilicate is uniformly mixed with a high-temperature-resistant inorganic filler and a forming aid, a mixture is prepared into an aqueous solution with the suitable viscosity, then the aqueous solution is sprayed into a sodium hydroxide aqueous solution coagulating bath through spinneret orifices, and coagulation forming is performed to obtain high-temperature-resistant silicon-based fibers; then cyclodextrin with an amphiphilic structure is used for performing surface grafting treatment on the prepared high-temperature-resistant silicon-based fibers to obtain amphiphilic high-temperature-resistant silicon-based fibers; and the obtained fiber plugging agent can be used in an oil-based drilling fluid and a water-based drilling fluid, is excellent in plugging effect, and can be applied to high-temperature severe environments of drilling deep plugging and the like.

The invention discloses titanium dioxide nanoribbons exposing a {010} crystal face and a preparation method thereof; an exposed crystal face, except two end faces, of the titanium dioxide nanoribbons is the {010} crystal face (the exposure rate of the {010} crystal face is close to 100%). The preparation method comprises titanate nanoribbons mainly exposing a {010} crystal face are used as raw material and are roasted at high temperature to prepare the product. The preparation processes of the titanate nanoribbons mainly exposing the {010} crystal face mainly includes four processes: hydrothermal reaction, alcohol assisting self-assembly reaction, water washing and drying. With adopting of the preparation method, not only is the exposure rate of the high-activity {010} crystal face improved, but also the specific surface area of titanium dioxide is increased. The preparation process has no need of use of fluorine-containing reagents and is an environmental-friendly green preparation method. With adopting of the preparation method, the preparation temperature of the titanium dioxide nanoribbons is reduced, and the production energy consumption and the production cost are effectively reduced. At the same time, because the titanium dioxide nanoribbons prepared by the method and exposing nearly 100% of the {010} crystal face have excellent photocatalytic activity, the titanium dioxide nanoribbons can be widely applied in the fields such as photolysis of water, environmental restoration, sensors and nano devices building.

The invention relates to a nickel metaphosphate micro-nanomaterial as well as a preparation method and an application thereof. The micro-nanomaterial has a nano sheet array structure, and the lamellar thickness of nano sheets is less than 20nm. The nickel metaphosphate micro-nanomaterial is prepared through the preparation method comprising the following steps: dissolving a soluble nickel salt and weak base molecules in a solvent to react together with carbon cloth to obtain a nickel-containing precursor / carbon cloth complex, and then performing heat treatment on the nickel-containing precursor / carbon cloth complex and a phosphate compound in an inert atmosphere to obtain the nickel metaphosphate micro-nanomaterial. Based on a structure duplication thought, the invention adopts a two-step method to achieve preparation of a micro-nanostructure and growth of a nickel metaphosphate crystal phase, respectively, the preparation of the nickel metaphosphate micro-nanomaterial with a single crystal phase is achieved, the experiment operation is simple and safe, and scale production and application can be achieved. The prepared nickel metaphosphate micro-nanomaterial has a significant pseudocapacitance characteristic, and the specific capacitance is greater than 2000F / g when the discharge current is 1A / g, so that the nickel metaphosphate micro-nanomaterial has a good potential application prospect in the aspect of electrochemical energy storage.

The invention discloses a π-conjugated polycyclic aminoisoquinoline compound, a synthesis method and application thereof, and belongs to the fields of organic chemistry and materials science. The invention provides an economical, efficient and green method for synthesizing the novel π-conjugated polycyclic aminoisoquinoline compounds with good atom and reaction steps, and the synthesized novel π-conjugated polycyclic aminoisoquinoline The structure of quinoline compounds has strong fluorescence quantum yield and long photoluminescence lifetime, and can be used in the fields of small molecule fluorescent markers, new optoelectronic materials, etc., and has good application prospects.

The invention discloses an amphiphilic high-temperature-resistant silicon-based fiber plugging agent and a preparation method thereof, belonging to the technical field of oil field engineering plugging; the amphiphilic high-temperature resistant silicon-based fiber plugging agent described in the invention is based Based on ethyl acetate, mixed with high-temperature-resistant inorganic fillers and molding aids, prepared into an aqueous solution with a suitable viscosity, and then sprayed it into a solidification bath of sodium hydroxide aqueous solution through the spinneret hole, solidified and formed, and obtained high-temperature-resistant silicon base fiber; then use cyclodextrin with amphiphilic structure to carry out surface grafting treatment on the prepared high-temperature resistant silicon-based fiber to obtain amphiphilic high-temperature resistant silicon-based fiber; the obtained product can be used in oil-based drilling fluid or It can be used in water-based drilling fluid with excellent plugging effect, and can be used in high-temperature and harsh environments such as plugging in deep layers of drilling.

The invention belongs to the technical field of organic chemical synthesis, and particularly relates to a preparation method of a dioxa [5] helicene compound and an application thereof, and the dioxa[5]helicene compound provided by the invention has good potential application prospects in the fields of photoelectric functional materials, asymmetric synthesis application, metal catalysis and the like. The raw materials adopted in the preparation method are cheap, easy to obtain and diversified, the high-yield dioxa [5] pentahelicene compound can be obtained through reaction under the action of alkali which is easy to obtain commercially, operation is easy, reaction conditions are mild, existence of different functional groups can be compatible, the substrate application range is wide, the product yield is high, and the defect that expensive and unavailable raw materials are used in a traditional transition metal catalytic synthesis method is overcome.

The invention discloses a transition metal compound with green fluorescence emission characteristic and a preparation method. A chemical formula of the transition metal compound is M2(HL)3(NO3), the M in the formula is divalent transition metal, and the HL is 1,1-[7,7'-bis-(8-hydroxyl anion quinoline)]. The invention further discloses the preparation method of the transition metal compound with the green fluorescence emission characteristic. The two-nuclear transition metal cluster structure compound with the green fluorescence emission characteristic provided by the invention has the advantages of simple preparation method, greenness, environmental friendliness and good potential application prospect in a fluorescence material aspect.

The invention relates to a three-dimensional 4f-5d coordination polymer and a preparation method and application thereof. The three-dimensional 4f-5d coordination polymer Ln(H2O)4(pyrazine)0.5W(CN)8 is prepared by using a mixing method which takes a neutral two-dimensional layered coordination polymer as a building block and taking pyrazine as a columnar ligand and puts the neutral two-dimensional layered coordination polymer and the pyrazine into acetonitrile, wherein Ln is any one of La, Ce, Pr, Nd, Sm, Eu, Gd and Tb. The coordination polymer has a ferromagnetic coupling mutual effect and has a significant application prospect in the field of magnetics.

The invention discloses a sheet type high-temperature-resistant self-suspension plugging agent and a preparation method thereof, and belongs to the technical field of oil field engineering drilling plugging. The preparation method comprises the following steps: taking bisphenol A, amino silicon oil and formaldehyde as main raw materials, carrying out prepolymerization, and carrying out mould pressing and curing in a mould to form a three-dimensional cross-linked thermosetting sheet; and then carrying out graft modification on the surface of the resin sheet by utilizing hydroxyl-terminated polyethylene glycol to obtain a final product. The thermosetting resin prepared by the preparation method adopts a compression molding process, the thickness size is adjustable and controllable, and the thermosetting resin is good in high-temperature resistance due to the fact that a large number of aromatic structural units and polysiloxane structural components which are crosslinked with one anotherexist in molecules, and a good leaking stoppage and leakage prevention effect can be achieved in an environment of 150 DEG C or above; besides, flexible polyethylene glycol molecular chains exist onthe surfaces of the resin sheets so that the resin sheets can be uniformly and stably suspended and dispersed in the drilling fluid, and the problem that a conventional plugging agent is difficult toapply or poor in using effect due to sedimentation in the drilling fluid is avoided or relieved.

The invention provides a ratio fluorescent probe as well as a preparation method and application thereof. The preparation method comprises the following steps: (a) mixing triphenyl bromoethylene and 3-formyl-4-hydroxyphenylboronic acid pinacol ester in the existence of toluene, a potassium carbonate solution and tetrabutylammonium bromide, adding a catalyst to perform a primary reaction, and performing primary separation and purification to obtain a compound A, wherein the catalyst is palladium (0) tetraphenylphosphine, and the compound A has the structure shown in formula II; (b) performing secondary reaction on the compound A which is obtained in the step (a) and 2-benzimidazolyl in the existence of ethanol and piperidine, and performing secondary separation and purification to obtain the ratio fluorescent probe, wherein the ratio fluorescent probe has the structure which is shown in formula (I). Compared with the prior art, the ratio fluorescent probe provided by the invention can realize the change of double fluorescence signals in the existence of low-concentration phosgene, is high in sensitivity and accuracy, and has high selectivity on the phosgene, quick response and low detection limit.

A method for producing organic macromolecule nano tube by sodium sulfide and perchlorobenzoacenaphthylene relates to a organic macromolecule nano tube. The method comprising: dissolving the sldium monosulfide in the absolute ethyl alcohol to get solution A, adding the perchlorobenzoacenaphthylene into the solvent to get mixture B, ultrasonic treatment to the mixture B; feeding solution A and B in a container for ultrasonic treatment, heating the container in the reaction vessel at least 1 hour at constant temperature, cooling, getting mixture C; taking the underlayer red deposit of the mixture C, washing at least a time with toluene, water and ethanol. Wherein, sldium monosulfide sulfur atoms: perchlorobenzoacenaphthylene chlorin atoms=1:2-3 according to the molar ratio, and solvnt:absolute ethyl alcohol=1:16-32, the solvent is chosen from one of toluene, cyclohexane or tetrahydrofuran.

The invention discloses a sheet-type high-temperature-resistant self-suspension plugging agent and a preparation method thereof, belonging to the technical field of oil field engineering drilling plugging. The present invention uses bisphenol A, amino silicone oil and formaldehyde as main raw materials, and after prepolymerization, molding and curing in a mold to form a three-dimensional cross-linked thermosetting sheet; then use hydroxyl-terminated polyethylene glycol to graft the surface of the resin sheet modified to obtain the final product; the thermosetting resin prepared by the present invention adopts a compression molding process, and the thickness and size are adjustable and controllable. It has good high temperature resistance and can play a good plugging and anti-leakage effect in an environment above 150 °C; in addition, the flexible polyethylene glycol molecular chains on the surface of the resin sheet enable it to be uniformly and stably suspended and dispersed in the drilling fluid , to avoid or alleviate the problem of difficult application or poor use effect of conventional lost circulation plugging agents caused by sedimentation in drilling fluid.

The invention relates to a three-dimensional 4f-5d coordination polymer and a preparation method and application thereof. The three-dimensional 4f-5d coordination polymer Ln(H2O)4(pyrazine)0.5W(CN)8 is prepared by using a mixing method which takes a neutral two-dimensional layered coordination polymer as a building block and taking pyrazine as a columnar ligand and puts the neutral two-dimensional layered coordination polymer and the pyrazine into acetonitrile, wherein Ln is any one of La, Ce, Pr, Nd, Sm, Eu, Gd and Tb. The coordination polymer has a ferromagnetic coupling mutual effect and has a significant application prospect in the field of magnetics.

The invention relates to the synthesis of coordination polymers, and specifically discloses a metal silver coordination polymer containing mixed ligands and a preparation method thereof. A metal silver coordination polymer containing mixed ligands, the chemical formula is: [Ag(BS)(BPP) 2 ] n . Wherein BS is benzenesulfonate, and DPP is 1,3-bis(4-pyridyl)propane. The specific method is as follows: BS ligand, DPP ligand and metal salt are mixed and dissolved in a mixed solution of water and methanol in a certain proportion of substances, a certain amount of sodium hydroxide is added, and crystallized at room temperature for 3 days, and a block is precipitated. crystals. The preparation method of the coordination polymer has the advantages of simple process, no pollution and high crystallinity. The metal-silver coordination polymer containing mixed ligands has very good potential application prospects in the field of light emission.