95results about How to "Simple conditions of use" patented technology

The invention provides a high selectivity catalyst used for catalyzing and completely oxidizing formaldehyde with low concentration at room temperature. The catalyst can catalyze formaldehyde completely so as to lead the formaldehyde to be converted into carbon dioxide and water at room temperature. In addition, the conversion rate of formaldehyde remains 100% within a long period of time, without complex auxiliary facilities such as light source, a heating oven and the like, and external conditions. The catalyst comprises three parts which are inorganic oxide carrier, noble metal component and auxiliary ingredient. Porous inorganic oxide carrier is one of cerium dioxide, zirconium dioxide, titanium dioxide, aluminium sesquioxide, tin dioxide, silicon dioxide, lanthanum sesquioxide, magnesium oxide and zinc oxide or the mixture thereof or composite oxide thereof, zeolite, sepiolite and porous carbon materials. The noble metal component of the catalyst is at least one of platinum, rhodium, palladium, gold and silver. The auxiliary ingredient is at least one of the alkali metals of lithium, sodium, kalium, rubidium and cesium. The loading of the noble metal component used in the catalyst of the invention is 0.1 to 10% according to weight converter of metal elements and the selective preference is 0.3 to 2%. The loading of the auxiliary ingredient is 0.2 to 30% according to weight converter of metal elements and the selective preference is 1 to 10%. When the loading of the auxiliary ingredient is lower than 0.2% or higher than 30%, the activity of the catalyst for catalyzing and oxidizing formaldehyde at room temperature is decreased remarkably.

The present invention provides a kind of formaldehyde gas oxidizing catalyst for room temperature use. Metal oxide is first obtained with soluble metal nitrate, carbonate or other inorganic salt and through oxidation and precipitation; and then loaded with small amount of metal to form the catalyst with room temperature formaldehyde oxidizing activity. The catalyst has metal oxide as main body and supported noble metal as active component, and features that the metal oxide may be oxide of Al, Ni, Mn, Si or Fe, and the noble may be Pt, Ru, Au, Rh or Pd. The catalyst of the present invention has high catalytic activity, and long sustaining time. The catalyst has formaldehyde converting rate up to 100 %, and results in low power consumption.

A composite oxide catalyst for removing NOx from the tail gas generated by combustion through low-temp selective catalytic reduction reaction in which ammonia gas or urea is used as reducing agent for reducing the NOx into N2 and H2O is prepared from a composite metallic oxide (whose main component is manganese oxide) and a porous inorganic oxide as carrier through citric acid complexing method.

The invention discloses a cerium copper titanium composite oxide catalyst for flue gas denitration and a preparation method. The catalyst comprises the following components: CeO2, CuO and TiO2. The catalyst is prepared by a coprecipitation method and can promote the generation of an ideal denitration effect. The catalyst has the advantages that: 1) the catalyst has the high activity for the catalytic reduction of nitric oxides in flue gas; 2) the adaptive temperature window of the catalyst is wide, namely the catalyst has certain activity within the integral temperature range from 150 to 450 DEG C; 3) the operating performance of the catalyst under the condition of SO2 and H2O can be improved effectively, and the catalyst has the strong adaptivity to severe working conditions in the presence of sulfur dioxide, water and the like and has the wide application range; 4) raw materials for preparation are easy to obtain, a preparation process is simple and the cost of the catalyst is low.

The invention provides a single-board integrated LED (light-emitting diode) dot-matrix module which comprises a circuit board and a dot-matrix circuit which is at least a 16*15 single primary color SMD (surface mounted device) LED dot-matrix circuit, wherein the dot-matrix circuit is arranged on a main view face of the circuit board and used for displaying information, a control circuit and a power interface are arranged on a rear view face of the circuit board, the control circuit is respectively connected with the power interface and the dot-matrix circuit, the power interface is used for connecting a power supply used for supporting the operation of the control circuit and the dot-matrix circuit, the control circuit is used for controlling LEDs in the dot-matrix circuit to display the information according to requirements of edited or modified display contents according to operation data received or typed by the control circuit. According to the invention, through the control circuit and the power interface which are arranged on the module, the problem that a module in the prior art needs an additional editor and an additional display controller can be solved, therefore, the use condition of the LED dot-matrix module is simplified effectively, and the module can display information and the displayed contents can be edited and modified by virtue of an infrared remote controller or operational keys after the power interface is connected to the power supply.

The invention relates to a metal carrier loaded catalyst for purifying formaldehyde at a room temperature. The catalyst comprises a metal carrier, porous inorganic material loaded on the metal carrier, noble metal active components loaded on the porous inorganic material and an additive, wherein the metal carrier is aludirome, the noble metal is any one or a mixture of at least two of platinum, rhodium, palladium, gold or silver and the additive is any one or a mixture of at least two of alkali metal simple substance, alkali metal compound, alkaline earth metal simple substance or alkaline earth metal compound. By the metal carrier load catalyst for purifying formaldehyde at the room temperature, most or all formaldehyde can be converted into carbon dioxide and water; by-products such as formic acid, carbon monoxide and methyl formate are not generated; and the formaldehyde conversion rate can be up to 100%.

The invention discloses a supported integrated catalyst for formaldehyde purification and a preparation method thereof. The supported integrated catalyst consists of a titanium dioxide nanotube array supporter and precious metal M, wherein the precious metal M is one or a mixture of at least two of Pt, Ru, Rh, Pd and Au. The titanium dioxide nanotube array supporter is soaked in a precursor solution containing the precious metal and then is roasted to obtain a precious-metal-component-supported catalyst, and the catalyst is reduced through hydrogen or a reducing solution and can be directly used for catalytically purifying formaldehyde. The catalyst is simple in composition and preparation flow, and convenient to popularize and apply. The high activity and stability of the catalyst on the formaldehyde can be kept at low temperature, the formaldehyde can be catalytically oxidized under the condition that other additional devices are not needed, and can be converted into harmless H2O and CO2, and thus the green elimination of the formaldehyde is further realized.

The invention relates to a main transformer differential protection CT polarity check method of a pumped storage power station. In the invention, an applied power method is adopted to solve the problem that the main transformer differential, bus differential and high-voltage cable differential protection CT polarity cannot be checked during the inversed electrification of a main transformer before the machine set of the power station is started, thereby the safety and reliability of the system and the inversed electrification of the main transformer are ensured. The method has the advantages that the operation and the using condition are simple, the used test instrument equipment can be used repeatedly, the water debugging straight-line period of the machine set is not occupied, the temporary high-voltage cable investment is saved, and the commissioning cost is reduced; therefore, the method has favorable popularization and application prospect.

The invention discloses a catalyst for complete catalytic oxidation of indoor low concentration formaldehyde at room temperature, the catalyst is characterized by comprising a nano metal oxide, a noble metal component and an assistant component, the nano metal oxide is used as a carrier, the noble metal component is at least one from platinum, palladium, ruthenium, rhodium, gold and silver, and the assistant is one or more than one substance from rare earth elements lanthanum, cerium, praseodymium, samarium, yttrium and neodymium, one or more than one kind of. The catalyst has the advantages that: the catalyst uses one or two rare earth modified nano inorganic oxide carrier, and is helpful to improve the dispersity and formaldehyde catalytic oxidation activity of metal nanoparticles. Therefore, under the circumstances of maintaining the same catalytic activity, the amount of noble metals can be reduced, and the cost of the catalyst can be reduced. The catalyst can completely oxidize formaldehyde at room temperature, does not need the help of optical, electric and other complex external auxiliary equipment. The catalyst can catalytically oxidize indoor low concentration harmful gas formaldehyde into non-toxic harmless carbon dioxide and water at room temperature.

The present invention provides a liquid preparation composition comprising a solvent and a surfactant dissolving in the solvent, the surface tension of the liquid preparation composition is less than 60mN / m, and the pH of the liquid preparation composition is 5.0-7.4. The present invention also discloses a preparation method of the liquid preparation composition and use of the liquid preparation composition in treatment of otitis media, otitis externa, rhinitis, nasosinusitis, lower respiratory tract inflammation, xerostomia, xerophthalmia and dry noses. The present invention also discloses a preparation comprising the liquid preparation composition. The liquid preparation composition can effectively relieve the otitis media, the otitis externa, the rhinitis, the nasosinusitis, the lower respiratory tract inflammation, the xerostomia, the xerophthalmia, the dry noses and other symptoms, can be used in the form of sprays or liquid droplets, can be applied to an effective site without use of a propellant or an atomization device, is easy to operate, and can effectively avoid stimulation and injury caused by the propellant and use inconvenience of the atomization device.

The invention relates to a formaldehyde room temperature purification nano-palladium-loaded nano cerium oxide catalyst. A nano cerium oxide cubic block is used as a carrier, and the surface of the carrier is loaded with the nano palladium by deposition-precipitation method to obtain the loaded type catalyst. The formaldehyde room temperature purification loaded type catalyst can convert most or all of the formaldehyde under the condition of room temperature into carbon dioxide and water without production of by-product of formic acid, carbon monoxide, and the like, and the formaldehyde conversion rate is up to 100%.

The invention provides a boiler oxygen scavenger and a preparation method of the boiler oxygen scavenger. The boiler oxygen scavenger comprises an organic reducing agent, a dispersing agent, a passivating agent, a pH adjusting agent and water, where the mass ratio of the organic reducing agent to the dispersing agent to the passivating agent to the pH adjusting agent to water is (10-40): (1-10): (5-20): (5-10): (20-40). The invention also provides a preparation method of the boiler oxygen scavenger. The method comprises the steps of sequentially adding the organic reducing agent, the dispersing agent, the passivating agent, the pH adjusting agent and water in parts by mass in a reactor in which a stirrer is arranged, stirring and dissolving to obtain the product disclosed by the invention, the boiler oxygen scavenger disclosed by the invention is non-toxic and harmless liquid chemical agent and can be used in the condition that boiler return water is used as drinking water or comes into contact with food. The boiler oxygen scavenger disclosed by the invention has an excellent effect of removing dissolved oxygen out of the boiler feed water and also can greatly reduce the contents of copper and iron in the feed water system; and therefore the boiler oxygen scavenger can be widely used in the fields of high-pressure and medium-pressure boiler water treatment.

The invention discloses a low temperature type catalyst for removing formaldehyde and a preparation method of the low temperature type catalyst and relates to a substance capable of fully catalyzing and oxidizing indoor formaldehyde into water and carbon dioxide at normal temperatures, belonging to the technical field of chemical engineering. The catalyst is an integral honeycomb ceramic type catalyst adopting an assistant such as aluminum oxide as a coating and adopting Pt, Pd or the random mixture of Pt and Pd as an active component, wherein the total content of the active component is 0.01-0.1%, and the total content of the coating is 5-20wt%. The preparation method of the catalyst comprises the steps of treating a carrier, preparing slurry, coating the slurry, and loading and activating the active component. The low temperature type catalyst for removing formaldehyde and the preparation method of the low temperature type catalyst have the characteristics of large surface area of the carrier, good cohesive property and easiness in operation, high catalyst activity, long service life and capability of fully removing formaldehyde at room temperature.

The invention discloses an integrated surgical positioning and navigation system which comprises imaging equipment, a pitching self-adaption device and markers, the pitching self-adaption device is connected with the imaging equipment and carried on a surgical robot, and the markers are arranged on the surface of an end effector and the body surface above the focus of a patient respectively. The accurate motion direction of each degree of freedom of the multi-degree-of-freedom mechanical arm is calibrated and determined, an imaging equipment coordinate system and a robot coordinate system are unified, and motion navigation of the multi-degree-of-freedom mechanical arm at the far end of a focus is carried out based on detection of a focus marker and the measurement position of imaging equipment. A relative space geometrical relationship is calculated based on detection of the focus marker and the actuator marker, and motion navigation of the multi-degree-of-freedom mechanical arm at the near end of the focus is executed. The structure is compact, the process is simple, and the intelligence, automation and integration degree of the surgical robot are improved; and meanwhile, by tracking surgical instruments and lesions in real time, good robustness is achieved for patient position movement.

The invention relates to a mobile attendance method, in which a method of acquiring the starting time of a system with combination of network time is employed for effectively solving a problem that the attendance time is liable to be tampered in the prior art. By means of GPS data with combination of base station positioning data, accuracy of checking-in geographic position of users, thereby solving a difficult problem of attendance management of a large amount of outworkers in many enterprises. The method achieves verification of the accuracy of people, position and time, can avoid false attendance and ensures fairness and reasonability and scientific management of personnel attendance checking system in enterprise. With combination of information management on a server, the method also allows functions of application and cancellation of leave and query of personal attendance status, thereby greatly satisfying requirements of both the enterprise and the outworkers. The method is simple in use conditions and can be carried out just by general mobile devices (such as cell phones). The checking-in operation of users is simple and convenient and is high in acceptability. The method can be popularized smoothly in enterprises well and is suitable for attendance management of the attendance of outworkers and the workers whose working position is not fixed.

The invention relates to a multifunctional phosphating solution and a preparation method and application thereof. The multifunctional phosphating solution comprises liquid A and liquid B and is characterized in that a ratio of the liquid A to the liquid B in the multifunctional phosphating solution is 1: 0.1-1. The liquid A comprises the following substances, by mass, 26 to 48 parts of diammonium phosphate, 0.9 to 12 parts of phosphoric acid with a concentration of 85%, 0.8 to 1.8 parts of metal powder, 0.6 to 1.4 parts of animal glue, 0.4 to 10 parts of calcined gypsum powder and 0.3 to 0.8 part of alum, with the balance being water. The liquid B comprises the following substances, by mass, 20 to 46 parts of zinc dihydrogen phosphate, 38 to 55 parts of zinc nitrate, 2 to 3.8 parts of sodium fluoride, 2 to 4 parts of zinc oxide and 2 to 6 parts of phosphoric acid with a concentration of 85%, with the balance being water. The multifunctional phosphating solution provided by the invention is composed of the liquid A and the liquid B, can realize removal of oil and rust at the same time and has the efficacy of rust protection, heat insulation, high temperature resistance, heat preservation, flame retardation, noise abatement, shock prevention, isolation, pollution cleaning and resistance to fire. The multifunctional phosphating solution has the following beneficial effects: a fast rust removal speed, great thickness of a formed film, long antirust time, etc.

The invention discloses a catalyst for ammonia selective catalysis and oxidization and a preparation method thereof. The catalyst is composed of a first support cordierite honeycomb ceramic, a porous second support inorganic oxide, an assistant rare-earth oxide and active metals; the catalyst is obtained by: modifying the surface of the first support cordierite honeycomb ceramic by using the second support porous oxide, supporting the rare-earth oxide to a support to obtain a catalyst precursor and finally distributing the active metals in the catalyst precursor. The catalyst of the invention uses the cordierite honeycomb ceramic as the first support, the use of the porous honeycomb ceramic as the first support enables low price and easy obtaining of material, the preparation method is simple, the catalyst is high in mechanical strength, stable in performance, good in ammonia oxidation selectivity and high in conversion rate, and a reaction product is nontoxic and harmless.

The invention discloses a copper-iridium composite oxide catalyst for preparing methanol by direct methane oxidation and a preparation method thereof, belonging to the technical field of preparing themethanol by methane oxidation. The catalyst consists of an iridium oxide, a copper oxide and a cocatalyst of a zinc oxide, a cobalt oxide or an iron oxide. The weight percentage of noble metal iridium is 0.1-10.0% and the weight percentage of the cocatalyst MOX is 0-20.0% based on the weight percentage of the catalyst of 100%. Compared with other copper-based catalysts use for preparing the methanol by methane oxidation, the copper-iridium composite oxide catalyst has the characteristics of simple preparation method, high methanol yield and repeated recycle in the reaction of preparing the methanol by methane oxidation.

The invention provides a functional material for visually degrading formaldehyde and VOCs (Volatile Organic Compounds) at normal temperature and normal pressure. The functional material comprises a loading agent, an oxidizing agent, a catalyst, a reinforcing agent and a ligand. The reaction efficiency is improved through the synergistic strengthening effect of the loading agent, the oxidizing agent, the catalyst, the reinforcing agent and the ligand, so that the material has an excellent effect of degrading formaldehyde and VOCs at normal temperature and normal pressure, the structure and color of the material are changed before and after the reaction with formaldehyde and VOCs, and the reaction speed and degree can be directly observed and indicated by naked eyes. The material prepared by the invention not only can degrade formaldehyde, but also can degrade various VOCs (Volatile Organic Compounds). Due to the synergistic strengthening effect, all the components are evenly distributed, firmly combined and resistant to water and moisture, the material can be made into a solid state or a liquid state, and the problems of performance degradation, structural damage and the like after a solid catalyst absorbs water are essentially solved. The functional material is used in the fields of environmental protection and health, and is especially important for treatment of pollution gas and industrial VOCs in space.

The invention particularly relates to a titanium dioxide nanorod palladium-supported (Pd) nanoparticle catalyst for formate decomposition reaction. A titanium dioxide nanorod is used as a support, nano Pd is supported to the surface of the support by means of surface modified in-situ reduction to obtain the supported catalyst. By using the supported catalyst for producing hydrogen by decomposing a formate at room temperature, efficient catalytic decomposition of all formats can be achieved at room temperature, and pure H2 is produced without other gases.

The invention discloses a plate-type low-temperature catalyst adopting crosslinked nanochain self-assembly porous spherical titanium dioxide as a carrier, and a preparation method and application thereof. The catalyst adopts the crosslinked nanochain self-assembly porous spherical titanium dioxide as the carrier, manganese-cerium-cobalt active ingredients are loaded on the carrier. The method comprises the steps of adopting a titanium precursor and an alkaline solution as raw materials, adopting a controlled release growing method for preparing titanium dioxide, and drying and roasting to obtain special porous titanium dioxide for the catalyst; preparing manganese salt, cerium salt and cobalt salt into a mixed solution, uniformly mixing and stirring ammonium hydroxide, deionized water, glass fiber and the prepared crosslinked nanochain self-assembly porous spherical titanium dioxide, adding the prepared mixed solution for continuously stirring until becoming a uniform paste, coating the paste on a coating line to form the plate-type catalyst, and calcining through a calcining line to obtain a final finished product. According to the plate-type low-temperature catalyst provided by the invention, the adopted prepared titanium dioxide is small in grain size, has a porous structure, and is large in specific surface area; with the doping of cobalt, the denitration activity and the sulfur-resistant toxic amaurosis of the catalyst are improved.

The invention discloses a room-temperature air purification non-photo-catalyst. The catalyst comprises components in percentage by weight as follows: 0-5% of a transitional element oxide, 0-10% of a rare-earth element oxide and the balance of nano MnO2, wherein the transitional element oxide comprises a silver oxide, a zinc oxide or a copper oxide, and the rare-earth element oxide comprises a lanthanum oxide, a cerium oxide, a praseodymium oxide or a neodymium oxide. The invention further designs a preparation method of the room-temperature air purification non-photo-catalyst. According to the room-temperature air purification non-photo-catalyst and the preparation method thereof, usage conditions are simple, and no electric power, heating power or light source is required, so that resources are saved; organic pollutants can be effectively catalyzed under the room temperature condition to generate harmless carbon dioxide and water; the conversion rate of the organic pollutants can be up to 100% within the effective working time interval.

The invention discloses a fiber / nano manganese dioxide composite material and a preparation method and an application thereof. The method comprises the following steps: 1) pretreatment of a fibrous raw material: performing selective oxidation treatment on the fibrous raw material, and washing the fibrous raw material to a neutral state to obtain oxidized fibre; and 2) preparation of the compositematerial: processed the oxidized fiber through dilute acid treatment and washing the material to the neutral state, mixing the material and a Mn2+solution and uniformly stirring the materials, addingan oxidizing agent and reacting the materials, washing the material, and drying the product to obtain the fiber for in-situ growth of nano manganese dioxide. The particle size scope distribution of the nano manganese dioxide particles is narrow, the distribution of the nano manganese dioxide particles on the surface of the fiber is uniform, shedding is difficulty happened, and the obtained producthas the excellent performance of fiber and nano manganese dioxide, can be processed as a wood functional material having decorative performance and functional performance, can perform catalytic purification of formaldehyde in a room without illumination, and enriches an application field of nano manganese dioxide.

The invention relates to flame retardant rigid polyisocyanurate foam and a preparation method thereof. The flame retardant rigid polyisocyanurate foam is prepared from the following components in parts by weight: 150-170 parts of polyisocyanate, 5-8 parts of polyether polyol, 15-20 parts of flame retardant, 2-3 parts of catalyst, 1-2 parts of stabilizer, and 15-20 parts of foaming agent. The flameretardant is prepared by mixing a nitrogen-containing flame retardant and a phosphorus-containing flame retardant at the mass ratio of 1:1. The preparation method comprises the following steps: S1, mixing an additive; and S2, preparing rigid polyurethane foam. The flame retardant rigid polyisocyanurate foam has the advantages of being good in flame retardant effect, high in rigid foam performanceand suitable for industrial production.

The present invention provides a kind of formaldehyde gas oxidizing catalyst for room temperature use. Metal oxide is first obtained with soluble metal nitrate, carbonate or other inorganic salt and through oxidation and precipitation; and then loaded with small amount of metal to form the catalyst with room temperature formaldehyde oxidizing activity. The catalyst has metal oxide as main body and supported noble metal as active component, and features that the metal oxide may be oxide of Al, Ni, Mn, Si or Fe, and the noble may be Pt, Ru, Au, Rh or Pd. The catalyst of the present invention has high catalytic activity, and long sustaining time. The catalyst has formaldehyde converting rate up to 100 %, and results in low power consumption.

The invention relates to the field of rubber materials and particularly relates to a rubber elastomer-based rapid forming material. The rubber elastomer-based rapid forming material is prepared from the following raw materials in percentages by weight: 50-70% of rubber powder, 0.5-5% of an anti-aging agent, 0.5-1% of a vulcanizing agent, 5-10% of a reinforcing agent, 1-5% of a surfactant, 0.5-1% of a fire retardant, 1-3% of a plasticizer and the balance of an inorganic filler. The rubber elastomer-based rapid forming material is simple in service condition, small in environmental pollution, good in product performance, high in accuracy, good in liquidity and high in mechanical strength. The rubber elastomer-based rapid forming material is wide in raw material obtaining range, simple and feasible in preparation method, low in cost and beneficial to market promotion and application.

The invention discloses a method for performing drainage and energy dissipation by utilizing steps. A drainage channel overflowing face is designed to be an identical-slope-ratio step structure. The ratio of height T to width h of identical-slope-ratio steps is designed slope ratio of the drainage channel overflowing face. The designed energy dissipation rate eta of a drainage channel is confirmed according to the total height P and the drainage amount q per unit width of the drainage channel and step roughness coefficient n of the identical-slope-ratio steps. The step roughness coefficient n of the identical-slope-ratio steps is confirmed according to protruding height delta of the identical-slope-ratio steps. The protruding height delta of the identical-slope-ratio steps is confirmed according to the step height T of the identical-slope-ratio steps and an included angle formed by the drainage face and a horizontal face. The step height T of the identical-slope-ratio steps is confirmed according to the drainage amount q per unit width of the drainage channel, and the drainage amount q per unit width of the drainage channel is confirmed according to the width B of the drainage channel. The drainage face is an oblique plane composed of oblique sides of a right angled triangle consisting of two right angled sides of each of identical-slope-ratio steps. The method for performing the drainage and the energy dissipation by utilizing the steps has the advantages of being simple in structure and saving engineering investment.

The invention provides a photoresist stripper composition, which comprises an inorganic base, an ammonium salt, an anticorrosive agent and water. A stripper provided by the invention is particularly applied to the stripping of thick dry films with the thicknesses of greater than 100 mu m, can completely strip the thick dry films under the conditions of relatively lower temperature of 40 to 50 DEG C and relatively shorter time of shorter than 30 min, is low in cost and environmentally friendly, can be used under simple conditions and does not contain any volatile organic compound.