83 results about "Indium Trichloride" patented technology

The invention discloses a preparation method of an indium zinc sulfide and titanium dioxide heterojunction nano material. Through a hydrothermal method, ZnIn2S4 grows on TiO2 nano rods in situ, and thus the ZnIn2S4 / TiO2 graded heterojunction nano composite material with a crystal lattice buffer layer structure is obtained. The preparation method comprises the steps that firstly, the TiO2 nano rodsare prepared through an electrostatic spinning method; then the obtained TiO2 nano rods are uniformly dispersed in a certain quantity of solution of zinc acetate, indium trichloride and thioacetamide; and the mixed solution is transferred into an autoclave at a certain temperature (120-180 DEG C) for a certain time (6-24 h), and thus the ZnIn2S4 / TiO2 heterojunction nano composite material with acertain loading quantity of ZnIn2S4 nanosheets can be prepared in a controllable mode. The ZnIn2S4 / TiO2 heterojunction nano composite material has the low-cost application prospects in the fields of photocatalytic degradation of organic matter through visible light and photolysis of water.

The invention relates to a preparing method of a nano-rod-shaped indium oxide (In2O3) gas-sensitive material, and belongs to the technical field of preparation of inorganic nanometer functional materials. The preparing method comprises the steps of with indium(III) chloride tetrahydrate being an indium source, by adopting hexadecyl trimethyl ammonium bromide as surface active agent, conducting a hydrothermal reaction under the alkaline condition of sodium hydroxide to prepare indium hydroxide and finally, conducting thermal roasting to obtain the indium oxide gas-sensitive material of a nano-rod-shaped structure. Finally prepared indium oxide is In2O3 with the cubic phase and of the nano-rod-shaped structure, has very good performance of sensing and detecting both nitrogen dioxide gas andhydrogen sulfide gas and is insensitive to other gases (carbon monoxide, ethyl alcohol, ammonia, hydrogen, formaldehyde and the like); the indium oxide also has low working temperature, a quick response and restoration, very high sensitivity, a low detection limit, high selectivity and high stability. Besides, the indium oxide gas-sensitive material can also be used in the fields of catalyst, battery materials, photoelectric materials and the like.

The method for synthesizing indium phosphide nanoparticles using indium trichloride as an indium raw material and tris(dimethylamino)phosphine as a phosphorus raw material, includes a preparation step of mixing the indium raw material, the phosphorus raw material, an organic solvent having a boiling point of 170° C. or higher, and a particle surface ligand to obtain a mixture solution and a synthesis step of synthesizing the indium phosphide nanoparticles by heating the mixture solution to 150° C. or higher but lower than 170° C. In the method, the particle surface ligand is an aliphatic amine having a carbon number of 18 or more, and the indium trichloride is an anhydride.

The invention relates to a preparation method of an ITO (indium tin oxide) / wool keratin solution compound functional finishing agent. The method comprises the following steps: 1) washing wool fibers with water, cleaning with detergent, degreasing with ethanol-acetone mixed solvent, crushing and adding into ion liquid, and heating and stirring to obtain a keratin ion liquid solution; 2) preparing an acetylacetone solution of indium trichloride and an ethanol solution of tin tetrachloride, and mixing the two solutions to obtain indium tin metal oxide sol; and 3) adding the indium tin metal oxide sol into the keratin ion liquid solution obtained in the step 1), and stirring and mixing to obtain the ITO / wool keratin solution compound functional finishing agent. The method provided by the invention can use fibers such as waste wool, cashmere and the like as raw materials, and is low in cost, simple to operate and easy to realize industrial production; and the compound functional finishing agent prepared by the method has the photoelectric properties such as high visual light transmissivity, high ultraviolet absorptivity, low resistivity and the like.

The invention discloses a reflecting and thermal-insulating coating for buildings and a preparation method of the reflecting and thermal-insulating coating. The reflecting and thermal-insulating coating contains the following components in parts by weight: 70-90 parts of a film forming substance, 10-20 parts of modified rutile type titanium dioxide, 5-15 parts of a thermal-insulating filling, 1-3 parts of a wetting dispersant, 0.5-1 part of a mildew preventive, 4-8 parts of a thickening agent, 1-3 parts of a defoaming agent, 6-12 parts of a film forming aid and 40-60 parts of deionized water, wherein the thermal-insulating filling is a modified hollow glass bead, and the modified hollow glass bead is mainly prepared from hollow glass beads, indium trichloride and zirconium oxychloride. The coating is relatively high in reflectivity and emissivity and low in heat conductivity coefficient, has a good thermal-insulating effect and can be applied to indoor thermal insulation.

The invention provides a method for preparing a NiO-In2O3 nano composite material. The method specifically comprises the steps: subjecting indium trichloride tetrahydrate and lauryl amine, which serve as raw materials, to a hydrothermal reaction, and carrying out calcining treatment, so as to obtain indium oxide nanospheres; then, laminating flaky nickel oxide to surfaces of the indium oxide microspheres by taking nickel nitrate hexahydrate, hexamethylene tetramine and trisodium citrate as raw materials, thereby finally obtaining the NiO-In2O3 nano composite material. According to the method, the production process is simple, obtained gas-sensitive materials have p-n heterojunctions formed by indium oxide and nickel oxide, show relatively high sensitivity and rapid response and recovery to acetone and can be applied to the field of acetone gas sensors, and thus, novel gas-sensitive materials with high sensitivity are obtained.

The invention provides a preparation method of a rGO / In2O3 composite room temperature gas-sensitive material with mesoporous structure cubic In2O3 grown on three dimensional reduction graphene oxide (rGO). The preparation method includes the following steps: using graphene oxide GO, tetrahydrate indium trichloride and urea as raw materials, and using trisodium citrate as a surfactant and a reductant for hydrothermal method and calcinations to obtain the omposite room temperature gas-sensitive material with the mesoporous structure cubic In2O3 uniformly distributed on a three dimensional rGO carrier overlapped into a pore structure. The production process is simple. The prepared mesoporous structure cubic In2O3 is uniformly distributed on the three dimensional rGO carrier overlapped into the pore structure, and the gas-sensitive detection material with sensitivity to trimethylamine gas at room temperature is obtained.

The invention discloses a preparation method of a long afterglow nanocrystal with controllable emission wavelength. The long afterglow nanocrysta is prepared by adopting an ethylene glycol assisted hydrothermal route. The method comprises the following steps: taking ethylene glycol as an assistant, and taking a gallium nitrate solution and an indium trichloride solution as a substrate; doping a chromium ion mixed solution and uniformly stirring; carrying out special water treatment at the temperature of 170 DEG C, and carrying out centrifugal separation and vacuum drying; finally, calcining aproduct in a muffle furnace at the temperature of 700DEG C and 1000DEG C in sequence, thus obtaining the long afterglow nanocrystal with the average particle size of about 20 nanometers and the adjustable emission wavelength. The preparation method disclosed by the invention has the advantages that the long afterglow nanocrystal prepared by the method has excellent properties of smaller size, controllable emission wavelength within a near infrared light zone (about 770 nanometers), long afterglow and the like; the preparation method has the characteristics of simple operation, low cost, no reductive atmosphere in the preparation process and no pollution to the environment.

The invention relates to a preparation method of high purity anhydrous indium trichloride, which belongs to the technology field of rare metal fine chemical industry. The preparation method includes: Using 99.99-99.999% Indium metal and 36% hydrochloric acid as the material and using organic solvents including n-butyl alcohol and n-heptane as the dehydrant, that is, using more unstable complex to replace more stable compound, the stable hydrated indium trichloride is replaced with the more unstable complex of the indium trichloride organic solvent; adopting a manner of microwave heating and gradually heating up including three steps of distillation dehydration at normal pressure, distillation de-reagent at reduced pressure and sublimation and purification of the anhydrous indium trichloride; and finally obtaining the high purity anhydrous indium trichloride (InCl3), which is white with a purity of up to 99.99-99.999% and a production rate of 97%-98%.

The invention relates to the technical field of material preparation and photocatalysis. The technical scheme comprises that a preparation method of an indium tin sulfide visible-light-induced photocatalyst comprises the following steps: (1) weighing stannic chloride pentahydrate and indium trichloride, dissolving stannic chloride pentahydrate and indium trichloride in a proper amount of deionizedwater, then weighing any one reactant of three sulfur sources, namely thioacetamide, thiourea or L-cysteine, adding the reactant into the uniformly stirred aqueous solution, adjusting the pH value to1-13, and continuously stirring for 2 h, wherein the molar ratio of tin tetrachloride pentahydrate to indium trichloride to the reactant is 1.5:4:8; (2) transferring the uniformly stirred solution into a hydrothermal reaction kettle, and carrying out a reaction for 10-12 h in an oven at the temperature of 140-180 DEG C; and naturally cooling to room temperature to obtain precipitates, respectively washing the precipitates with deionized water and absolute ethyl alcohol for multiple times, and carrying out vacuum drying at the temperature of 60 DEG C for 10 h to obtain an orange powder sample.The preparation method is simple in steps and low in cost.

The invention discloses a hydrothermal synthesizing method of a sheet-formed diindium trisulphide nano-structured material. According to the invention, four water indium trichloride crystals are added to water, the mixture is processed through magnetic stirring, such that a clarified solution is formed; a certain amount of a surfactant of cetyltrimethyl ammonium bromide is added to the solution, and the surfactant is completely dissolved; a certain amount of thioacetamide is added to the solution and is completely dissolved; the solution is clarified, and the obtained solution is adopted as a precursor solution of diindium trisulphide; a hydrothermal synthesizing method is adopted, that the precursor solution is refluxed and heated in a three-neck round-bottom flask. When the reaction temperature, the reaction solvent and the surfactant are changed, diindium trisulphide nano-structured materials with different forms can be obtained. The method provided by the invention has advantages of simple reaction system, low reaction temperature, and high yield of diindium trisulphide nano-structured material. The prepared diindium trisulphide nano-structured material has advantages of controllable form, high purity, good property, large specific surface area, and good visible light degradation capacity. The experiment has good repeatability.

The invention discloses an In2O3@ZnIn2S4 nanosheet material and a preparation method and application thereof. The method comprises the following steps: dissolving indium oxide in acidic water to obtain an indium oxide solution; and then adding zinc chloride, indium trichloride and thioacetamide into the indium oxide solution for a reaction; and carrying out washing and drying to obtain the In2O3@ZnIn2S4 nanosheet material, wherein a molar mass ratio of indium oxide to zinc chloride to indium trichloride to thioacetamide is 1: 2: 2: 5. The preparation method for the In2O3@ZnIn2S4 nanosheet material in the invention is simple and convenient in operation and low in cost; the prepared photocatalyst material, i.e., the In2O3@ZnIn2S4 nanosheet material, has extremely high targeting properties and degradation efficiency, and the degradation rate of 2,4-dichlorophenol in surface water can reach 93.2%; and the photocatalyst material can be recycled and still has high degradation rate after being used multiple times, so the treatment cost of 2,4-dichlorophenol is greatly reduced. Treatment with the photocatalyst material is efficient and energy-saving, and can meet national detection requirements on 2,4-dichlorophenol in surface water in China.

The invention discloses a catalyst for alkyd resin synthesis and an application method thereof. The catalyst is indium trichloride tetrahydrate, the application method (1) includes the procedures of alcoholysis, esterification and contraction, condensation polymerization, dilution and filtering and catalyst recovery; the application method (2) includes e) the procedure of fatty-acid reaction, f) the procedure of dilution and filtering and g) the procedure of catalyst recovery; compared with the prior art, the method can reduce the duration of existing alkyd resin synthesis from about 16 hours to about 4 hours, the color of the resin is lightened, and the catalyst is green and environment-friendly catalyst which can be recycled.

The invention discloses a manufacturing method and a formula of a graphene far-infrared heating plate. A solution is divided into a main solution, an additive and deionized water. The manufacturing method of the main solution comprises the following steps: putting 20-100g of graphene, 1-10g of stannic chloride (SnCl4), 1-15g of indium trichloride (InCl3) and 1-10g of ammonium fluoride (NH4F) intoa container; and pouring 100-200 mL of absolute ethyl alcohol (EtOH), stirring for 1-3 hours, and standing for 5-30 hours to obtain the main solution. The additive is poured into a main solution container, and the solution is stirred for 10-60 minutes, then 5-30 mL of a hydrochloric acid is added, the solution is stirred for 10-60 minutes, and then the solution stands for 5-15 hours for later use.The hydrochloric acid is added to play a role of a stabilizer, and a far infrared spectrum wavelength of the heating plate is stabilized within the range of 4-14 micrometers by the additive.

The invention discloses a bridged double-center BODIPY derivative containing fluorene at a meso-position and a preparation method thereof. The preparation method comprises the following steps: synthesizing a symmetric dialdehyde compound containing bridging groups consisting of benzene, thiophene and furan and different substituent groups like a butyl group and an octyl group; then subjecting the symmetric dialdehyde compound and pyrrole to a reaction under the catalysis of indium trichloride so as to synthesize a bis(dipyrrolidine) compound; and successively carrying out oxidation by chloranil and fluoroboronation by boron trifluoride ether so as to obtain a fluorene-containing different bridging group-substituted BODIPY dye which has a structural general formula as shown in a formula I that is described in the specification. According to the invention, fluorene and the bridging groups consisting of benzene, thiophene and furan are introduced for the first time and conventional synthetic methods are improved, so the obtained double-center BODIPY dye has stable spectral absorption; and introduction of thiophene, furan and fluorene enables the fluorescence emission peak of the derivative presents obvious red shift, and fluorescence effect is enhanced with enhancement of system conjugative effect. The organic dye can be efficiently synthesized and widely used in fields like life science, analytical chemistry and environmental energy.

The invention discloses an MoIn2S4 ternary counter electrode and a method for preparing a dye-sensitized solar cell by utilizing the same, and belongs to the technical field of solar cells. The MoIn2S4 ternary counter electrode is prepared by the following steps: adding sodium molybdate dihydrate, indium chloride tetrahydrate and thioacetamide into ultrapure water according to a mole ratio of 1:(2.0-2.1):(6-7), and fully stirring the components until the components are completely dissolved; transferring a solution into a reaction kettle equipped with FTO glass, and carrying out a constant-temperature hydrothermal reaction at 190-210 DEG C for 10-20 hours; when the reaction kettle is naturally cooled to the room temperature, taking out FTO in which an MoIn2S4 film is synthesized; and carrying out washing and drying to obtain the MoIn2S4 ternary counter electrode. The prepared MoIn2S4 ternary counter electrode and a TiO2 photo-anode film with the same substrate are assembled into a DSSC. The photoelectric conversion efficiency of the DSSC is up to 5.04% under the simulated solar irradiation of 100 mW.cm<-2>.

The invention relates to a preparation method of an indium oxide nanorod ordered aggregate, which comprises the following steps of: a, under a stirring condition, adding indium oxide and natrium aceticum in an ethylene glycol water solution to prepare a mixing solution, heating the mixing solution in a closing manner, carrying out thermal reaction to obtain a reaction solution; b, carrying out solid-liquid separation on the reaction solution, washing and drying solids to obtain an indium oxyhydroxide nanorod ordered aggregate; and c, calcining the indium oxyhydroxide nanorod ordered aggregate in air to obtain a hexagonal indium oxide nanorod ordered aggregate or a three-dimensional indium oxide nanorod ordered aggregate. With the ethylene glycol water solution as a reaction medium, and the indium oxyhydroxide nanorod ordered aggregate is prepared in one step by adopting a solvothermal method, thus the preparation method is simple in process; and meanwhile, a structure guide agent or surfactant is not added, thus the cost is lowered.

The invention discloses a waterborne glass thermal-insulation coating and a preparation method thereof. The waterborne glass thermal-insulation coating contains the following components in parts by weight: 70-90 parts of epoxy modified organic silicon resin, 10-20 parts of fluorocarbon resin, 5-15 parts of nano-aerogel, 5-15 parts of a thermal-insulation filling, 1-3 parts of a wetting dispersant, 0.5-1 part of a mildew preventive, 4-8 parts of a thickening agent, 1-3 parts of a defoaming agent, 6-12 parts of a film forming aid and 40-60 parts of deionized water, wherein the thermal-insulation filling is modified expanded perlite, and the modified expanded perlite is mainly prepared from expanded perlite, indium trichloride and zirconium oxychloride. The waterborne glass thermal-insulation coating is relatively high in reflectivity and emissivity and low in heat conductivity coefficient, has a good thermal insulation effect and can be applied to indoor thermal insulation.

The invention discloses a preparation method of 2-pyrrole benzenylsulfonylamide compounds as shown in formula (III), and the method comprises the following steps: pyrrole as shown in formula (I) and phenylsulfonyl imine compounds as shown in formula (II) react completely in an inert organic solvent under the function of metal catalyst of indium trichloride at minus 10-10DEG C, the reaction endpoint is detected by TLC, and after the reaction is finished, the reaction solution is processed, thus preparing the 2-pyrrole benzenylsulfonylamide compounds as shown in formula (III); and the amount ratio of the pyrrole as shown in formula (I) to the phenylsulfonyl imine compounds as shown in formula (II) is 1:1.0-4.0. The method has the advantages of mild reaction condition, simple operation and high yield; being environmental-friendly, generating no toxicity basically in the whole production process, being safe to operators, generating no by-products as all atoms of raw materials participate in the product composition, being consistent with economic principle and having high raw material utilization ratio.

The invention discloses a method for synthesizing a silver indium sulfide heterojunction structure nano material through a hydro-thermal mode. The method comprises steps of dissolving an alcoholic suspension of silver nanowires in de-ionized water, stirring the alcoholic suspension, adding indium trichloride tetrahydrate crystal to the mixing liquid, conducting magetic stirring, adding a certain amount of surface active agent cetyl trimethyl ammonium bromide, stirring the surface active agent cetyl trimethyl ammonium bromide till the surface active agent cetyl trimethyl ammonium bromide is dissolved completely, adding a certain amount of thiacetamide, stirring the thiacetamide till the thiacetamide is dissolved completely, regarding the formed mixing liquid as a precursor solution of the silver indium sulfide heterojunction structure nano material, refluxing and heating the precursor solution in a round bottom flask with three necks by using a hydro-thermal method, changing conditions, and obtaining nano structure materials with different shapes. The reaction system is simple, the reaction temperature is low, the synthesized silver indium sulfide structure is novel, the synthesized composite material yield is high, and the reverse specific discharge capacity of the material is high when the material serves as a lithium material cathode. Besides, the method has good repeatability and operability.

The present invention provides a preparation method of a nano structured cubic indium oxide gas sensitive material. The preparation method includes the following steps: the nano structured cubic indium oxide gas sensitive material is prepared from indium (III) chloride tetrahydrate and 1,4-Diaminobutane as raw materials through hydrothermal reaction and calcination treatment. The method has the advantages of simple process, no requirement of the use of any surfactant, and low synthesis cost, and the obtained indium oxide can be used as a gas sensitive material, the nano structured cubic indium oxide gas sensitive material has good trimethylamine gas sensing properties, so that the obtained the nano structured cubic indium oxide gas sensitive material can be widely used in trimethylamine gas detection.

The invention discloses a preparation method of an oxazole derivative, belonging to the technical field of organic synthesis. The method comprises the following steps: adding substituted p-methylene benzoquinone, substituted N-propargylamide and indium trichloride in a reactor, adding a solvent 1,2-dichloroethane, heating until completing reaction, concentrating filtrate by using a rotary evaporator to obtain a crude product, and isolating through column chromatography to obtain a product. The synthetic method of the oxazole derivative provided by the invention is scientific and reasonable, and is characterized in that the synthetic method is simple, the atom economy is high and the product is easy to purify. The reaction equation is shown in the description.

The invention discloses a photocatalyst and a preparation method and application thereof, and belongs to the technical field of semiconductor photocatalytic decomposition of water to produce hydrogen, and the preparation method comprises the following steps: S1, preparing ZnO nanoparticles, S2, preparing ZnIn2S4 nanosheets, S3, preparing an AZnIn2S4 / BZnO heterojunction nanomaterial, adopting a one-step hydrothermal synthesis method, weighing zinc chloride, indium trichloride tetrahydrate and thioacetyl, dissolving the zinc chloride, the indium trichloride tetrahydrate and the thioacetyl into ethylene glycol, adding a catalyst, and stirring to obtain the photocatalyst. The preparation method comprises the following steps: dispersing ZnO nanoparticles prepared in the step S1 into a mixed solution, carrying out ultrasonic treatment at room temperature for 25-40 minutes to form a mixed solution, dispersing the ZnO nanoparticles prepared in the step S1 into the mixed solution obtained in the step S1, carrying out ultrasonic treatment at room temperature for 25-40 minutes, then transferring into a high-pressure kettle with a polytetrafluoroethylene lining, heating at 100-130 DEG C for 1.5-3 hours to obtain a precipitate, and then centrifuging, washing and separating the precipitate obtained in the step S1 to obtain the ZnO nano-particles. The preparation method comprises the following steps: adding BZnO and AZnIn2S4 into a hydrothermal reaction kettle, carrying out vacuum drying for 10-14 hours to obtain an AZnIn2S4 / BZnO heterojunction nano material which is used as a photocatalyst, and synthesizing a ZnIn2S4 / ZnO heterojunction through a hydrothermal method to form the photocatalyst with high photocatalytic performance.

The present invention provides a preparation method of a porous structured cubic indium oxide gas sensitive material. The preparation method includes the following steps: the porous structured cubic indium oxide gas sensitive material is prepared from indium (III) chloride tetrahydrate and trimethylamine as raw materials through hydrothermal reaction and calcination treatment. The method has the advantages of simple process, no requirement of the use of any surfactant, and low cost, and the obtained porous structured cubic indium oxide gas sensitive material has a porous structure, and has good trimethylamine gas sensing properties, so that the obtained porous structured cubic indium oxide gas sensitive material has a long-term application prospect in the detection of meat food freshness.

The invention provides a waterborne glass thermal insulation coating and a preparation method thereof. The waterborne glass thermal insulation coating includes the following components in parts by weight: 70-90 parts of epoxy-modified organic silicone resin, 10-20 parts of pure acrylic emulsion, 5-15 parts of nano aerogel, 5-15 parts of thermal insulation filler, 1-3 parts of a wetting dispersant,0.5-1 part of a mildew preventive, 4-8 parts of a thickener, 1-3 parts of a defoamer, 6-12 parts of a coalescing agent and 40-60 parts of deionized water, wherein the thermal insulation filler is modified potassium hexatitanate whiskers mainly prepared from expanded perlite, indium trichloride and zirconium oxychloride. The coating not only has higher reflectivity and emissivity, good thermal insulation, and low heat conductivity coefficient, and but also can be used for indoor thermal insulation.

The invention provides a preparation method and application of an indium-based metal organic framework material, and the preparation method comprises the following steps: dropwise adding a sodium formate solution into an indium trichloride solution, heating and stirring to obtain an indium metal cluster; dispersing the indium metal cluster in N, N-dimethylformamide to obtain a first mixed solution; dispersing benzophenone-4, 4' -dicarboxylic acid in N, N-dimethylformamide to obtain a second mixed solution; and dropwise adding the second mixed solution into the first mixed solution, adding formic acid and H2O, transferring into a high-pressure reaction kettle, and performing solvothermal synthesis reaction to obtain the indium-based metal organic framework material. The indium-based metal organic framework material prepared by the method has high adsorption selectivity on adsorption and separation of CH4 and N2, under the same condition, the adsorption selectivity on CH4 and N2 is more than 7.5 times of the selectivity of traditional adsorption materials such as a carbon molecular sieve, and the material has excellent water vapor stability. The indium-based metal organic framework material is applied to separation of CH4 and N2 in coal bed gas and has an excellent separation effect.

The present invention discloses a laminated cell negative electrode conducting gel. It is formed from ionic high-molecular material and pulp material according to the mixing ratio of 1-3:1. The ionic high-molecular material can be one to three kinds selected from acrylic acd-ethylene acetate copolymer, butenoic acid-ethylene acetate copolymer, polyvinyl acetate, acrylic acid-acrylamide copolymer and butenoic acid-acrylamide copolymer, and the pulp material can be one to three kinds selected from cross-linked starch, etherified starch, cross-linked and etterified starch, laurinol, polyoxyethylene ether, polyacrylic acid, sodium polyacrylate, polyacrylamide, indium trichloride, polyvenyl alcohol, polyglycol, sodium carboxymethyl cellulose and xanthan gum. Said invention can raise adhesion quality of zinc sheet and pulp layer paper.

The invention provides a preparation method of a RuO2-In2O3 nano composite material. The preparation method comprises the following steps: performing hydrothermal reaction on raw materials, i.e., indium trichloride tetrahydrate, urea and trisodium citrate hydrate, calcining, and obtaining cubic indium oxide; and then adopting ruthenium trichloride as a raw material, and compositing granular ruthenium oxide onto the surface of the indium oxide cube, and finally obtaining RuO2-In2O3 nano composite material. The preparation method is simple in production process, ruthenium oxide in an obtained gas sensitive material has a precious metal function and modifies indium oxide, high sensitivity and rapid response and restoration for triethylamine can be achieved, and the RuO2-In2O3 nano composite material can be used for the field of triethylamine gas sensors, thereby obtaining a novel gas sensitive material with high sensitivity.

The invention relates to a preparation method of indium trichloride, which is divided into a primary chlorination process and a secondary chlorination process. The invention adopts the secondary chlorination sublimation method to prepare indium trichloride, and the product prepared by the method has high purity, short process time, less equipment required, high raw material utilization rate and low production cost.

The invention discloses a method for preparing 2, 4-dihydroxy benaophenonel by using indium trichloride to catalyze. The method comprises the following steps of adding resorcin, benzoyl chloride, indium trichloride and solvent into a reaction container, heating, stirring, and carrying out reflux reaction for 3 to 8 hours; and after reacting, pouring the reaction liquid into a large amount of cold water, crystallizing, filtering, and drying, so as to obtain the 2, 4-dihydroxy benaophenonel. The method for preparing the 2, 4-dihydroxy benaophenonel by using the indium trichloride to catalyze has the advantages that the indium trichloride is used as a catalyst, and the reaction can be carried out under the reaction condition with lower requirement, so the 2, 4-dihydroxy benaophenonel is prepared; the separation and the purification of the reaction product are easy, and the yield rate can reach more than 80%; and pollution-free water is adopted as the solvent, so the injury of the solvent to environments and experiment persons is avoided.