CN102284077A - Multifunctional high-efficiency air purifier for indoor (vehicle) environment - Google Patents
Multifunctional high-efficiency air purifier for indoor (vehicle) environment Download PDFInfo
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- CN102284077A CN102284077A CN2010102029970A CN201010202997A CN102284077A CN 102284077 A CN102284077 A CN 102284077A CN 2010102029970 A CN2010102029970 A CN 2010102029970A CN 201010202997 A CN201010202997 A CN 201010202997A CN 102284077 A CN102284077 A CN 102284077A
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Abstract
The invention discloses an air purifier for simultaneously removing indoor (vehicle) formaldehyde, benzene series organisms, carbon monoxide and ozone by using normal-pressure plasma and a monatomic nanocomposite material catalyst for efficiently resisting bacteria through room-temperature catalysis, which relates to the fields of the plasmas, electrostatic precipitation, environmental catalysis, environment friendliness and air purification. The air purifier is characterized in that the formaldehyde, the benzene series organisms, the carbon monoxide, the ozone, the bacteria, pathogenic bacteria and other pollutants in air are effectively removed by using a low-temperature plasma, the electrostatic precipitation and an integral catalyst integrated technology, which is shown as a figure. According to the air purifier disclosed by the invention, the plasma, the electrostatic precipitation and the room-temperature catalyst technology are utilized to simultaneously remove various pollutants successfully and efficiently without secondary pollution and overcome the application bottleneck of the traditional single technology in the field of air purification of indoor (vehicle) and other closed or semi-closed spaces, thus the air purifier has absolutely international primacy.
Description
Technical field
The present invention is a kind of plasma, electrostatic precipitation and catalytic integrated technology.The catalyst that this integrated technology can room temperature be removed the interior formaldehyde in chamber (car), benzene series row Organic substance, carbon monoxide efficiently and had the high-efficiency antimicrobial performance, the ozone that produces when wherein catalyst can decompose plasma discharge has efficiently overcome the application bottleneck in plasma (car) inner air-cleaning field in the chamber.The present invention relates to plasma, electrostatic precipitation, catalysis and air purification field.
The invention still further relates to the method for integrated above-mentioned plasma, electrostatic precipitation and catalysis technique.
The invention still further relates to the air purifier preparation of above-mentioned catalyst formaldehyde, benzene series Organic substance, carbon monoxide and room temperature ozone decomposition and high-efficiency antimicrobial performance in room temperature is removed chamber (car) efficiently.
Background technology
Along with steadily improving of China's rapid development of economy and living standards of the people, by finishing or ornament materials and the interior air pollution problems inherent in chamber (car) that causes is very serious.Wherein chamber (car) the interior air formaldehyde pollution problem that is caused by finishing or ornament materials is very serious, has caused that the whole world pays close attention to greatly.International cancer research institution of World Health Organization (WHO) (IARC) tissue is pointed out: formaldehyde can cause human carcinogenic.Studies show that formaldehyde is the higher material of a kind of toxicity, short term contact formaldehyde can stimulate eyes, nasal cavity and respiratory tract and cause allergic reaction; Long-term contact low dosage formaldehyde can increase nasopharyngeal carcinoma, leukemia and dead probability.Therefore, airborne formaldehyde is extremely urgent in the decontamination chamber (car).Simultaneously, using in a large number and popularizing of automobile brings great convenience for people's life.Spraying paint etc. on the binding agent of working of plastics, leather seat and use such as sponge medicated cushion, artificial floor of ornament materials that uses in the car such as instrument desk, vehicle window and the car body produces some toxic gases, polluted the interior air of car.The easier pollution that causes environment inside car of, good seal performance narrow and small because of space in the automobile.Benzene series things such as benzene,toluene,xylene are main air pollutants in the chamber (car), studies show that the people sucks the benzene,toluene,xylene of high concentration at short notice, central nervous system's anesthetic action can appear, the lighter's dizziness, headache, nauseating, uncomfortable in chest, weak, confusion, severe patient can cause stupor so that breathing, circulatory failure and death.Chronic poisoning can be caused if contact certain density benzene,toluene,xylene for a long time, symptoms such as neurasthenia such as headache, insomnia, lethargy, hypomnesis can be occurred.Therefore benzene compounds is defined as carcinogen by World Health Organization (WHO).
Formaldehyde, carbon monoxide and ozone are the interior air pollutants in three kinds of main chambers (car), and its harm has been subjected to people and has paid close attention to widely.China stipulates in the chamber (car) in the air that in " air quality standard chamber (car) in " of promulgation in 2002 sanitary standard (maximum permissible concentration) of formaldehyde, carbon monoxide and ozone is respectively 0.10,10 and 0.16mg/m in (GB/T18883-2002)
3Therefore, remove interior airborne these pollutant in chamber (car) important meaning is arranged.Purification method can be divided into absorption method, plasma technique, chemical reaction method, photocatalytic method and catalysis method roughly, and wherein catalysis method is a kind of long lasting method.U.S. Pat 5585083 has been invented a kind of Pt/SnO
2Catalyst is removed the method for formaldehyde in the air, and catalyst is that oxidant is completely oxidized to carbon dioxide and water with formaldehyde not having under extra energy input and-5～25 ℃ of conditions with airborne oxygen.But the Pt content (12wt%) that catalyst is high causes costing an arm and a leg of catalyst, and therefore this catalyst can only be used special occasions such as some military projects or aerospace.The Chinese patent CN1698932 rare earth oxide or the metal composite oxide catalyst of load gold, PARA FORMALDEHYDE PRILLS(91,95) can obtain effect preferably under 80～100 ℃ of temperature.
A series of removal CO catalyst patents (publication number: CN1724152, CN1689964 and CN1689963) are invented by Osaka, Japan gas Co., Ltd..Under 130～180 ℃ of temperature, carbon monoxide is had effect preferably, but need heat energy import-restriction the extensive use of this catalyst.Chinese patent CN90106857 adopts manganese, Cu oxide to come ozone decomposition as active component.CN1259398A, CN117167674A and CN1357348A adopt manganese, copper, nickel and cobalt/cobalt oxide as active component, load on ozone decomposition on the activated carbon.CN1785507A adopts various Mn oxides can obtain effect preferably at normal temperatures as catalyst.In Chinese patent CN1812835A employing manganese and zirconium, the titanium one or both are as catalyst, in the effect of 150 ℃ of ozone decompositions that obtain.But humidity-proof ability difference and/or to need the input of additional energy be the biggest obstacle of these catalyst extensive uses.
" IAQ (indoor air quality) standard " came into effect in 2002, wherein multiple volatile organic matter airborne concentration in chamber (car) limited.The maximum permissible concentration of benzene is 0.11mg/m
3, the maximum permissible concentration of toluene is 0.2mg/m
3, the maximum permissible concentration of dimethylbenzene is 0.2mg/m
3Long term monitoring result shows that for the interior environment in newly-decorated chamber (car), benzene series thing exceeding standard rate can reach 1～10 times, and the organic improvement of volatility benzene series in the interior environment in chamber (car) is very urgent.
The method of improving chamber (car) interior air benzene series Organic substance pollution commonly used mainly comprise window that ventilation, green plants absorb naturally, purification styles such as the physical and chemical adsorption of active carbon, plasma technique, photocatalysis technology and catalytic oxidation technology.Absorption method is the most frequently used benzene series Organic substance purification style.Absorption method has certain removal efficiency, enrichment function and lower characteristics such as energy consumption preferably, becomes method commonly used such as the VOCs that administers the benzene series thing.Yet physical absorption still is that chemisorbed all can not reach satisfied effect, because when absorption and desorption when reaching balance, adsorbent will lose efficacy maybe to be needed to regenerate.Plasma technique has certain purification efficiency to benzene series thing gas, but purification process has two shortcomings: 1) isoionic polymerization or initiated polymerization generation granule takes place in benzene series thing easily, causes particulate matter to exceed standard; 2) plasma discharge is easy to generate O
3, deleterious by-products such as CO and nitrogen oxide produce secondary pollution.These have all limited the application of plasma technique.Photocatalysis all the organic volatile contact scar things in the chamber (car) of almost degrading have very strong broad spectrum activity, and its shortcoming is that efficient is lower, and often fully decomposing pollutant even generation to the more deleterious by-product of human body.The catalytic oxidation technology has a lot of advantages: handle waste gas efficient height, treating capacity big, handle fully, do not have secondary pollution and do not have problems such as absorption is saturated, very effective to the processing of low concentration pollutant especially.But the catalytic oxidation treatment benzene in air is that thing needs higher activation energy, and the energy barrier that provides certain energy such as heat energy etc. just can overcome oxidation benzene series thing to catalyst promptly is provided, and reaches the purpose of eliminating the benzene series thing.
From the above, monotechnicses such as plasma and catalytic oxidation technology all have its advantage, but the drawback that it can't overcome is also arranged respectively.The present invention is that plasma, electrostatic precipitation and catalytic oxidation three big technical advantage stacks, the interior benzene in air in the complementary efficient removal of inferior position chamber (car) are the new and high technology of thing pollutant, has realized removing under normal wet normal temperature condition the purpose of benzene series row pollutant.
In addition, airborne antibacterial is the main cause that causes the human body respiration tract disease.Nano anti-biotic material has vast market because of advantages such as antimicrobial efficiency height, good stability, nonpoisonous and tasteless and broad spectrum activities.Being usually used in nano anti-biotic material mainly is loaded Ag (Ag
2O), serial inorganic matter such as CuO or ZnO, because it is stronger that silver is antibacterial ability, Grain-positive, negative bacterium and mycete and yeast all there is effect preferably, and safety is good, human body is not produced toxic action, so present business-like antibacterial mainly is a silver is anti-biotic material, and be widely used in Related products such as coating, plastics, rubber and fabric.
Think that at present silver is that anti-biotic material mainly contains two kinds of mechanism: silver ion oozes out mechanism and catalytic activation oxygen mechanism.It is to be that anti-biotic material oozes out silver ion Ag by silver that silver ion oozes out mechanism
+With the microorganism combination, destroy cell synzyme, electric transmission system, respiratory system or material transfer system etc., cause microbial death.Present most inorganic antibacterial material all is to adopt silver ion to ooze out mechanism.As the TiAgZn compound system of CN 1568704A invention, the nano-TiO of CN 1742583A invention
2, ZnO and Ag
2The silver-colored aluminum sulfate system of O system and US20090047311 invention etc.Mechanism is because need constantly to consume Ag like this
+So the service life of antibacterial, (ruggedness) was decided by the content of anti-biotic material silver, finally, exhausting of silver lost efficacy because of causing anti-microbial property.So ooze out the Ag of mechanism
+Antibacterial can not adapt to the economic strategy of sustainable development in service life and existing problems economically.
Catalytic activation oxygen mechanism mainly is that silver atoms (comprising band portion positive charge Ag ion) can become active oxygen species (as O airborne oxygen activation in air
-, O
2 -Perhaps O
2 2-Deng), or in liquid, activating solvent can be become living radical (HO or RO, R represents Organic substance etc.), these active oxygen species or the nonselective destroy microorganisms matrix of living radical energy cause the death of microorganism.Such antibacterial does not have selectivity to microorganism, so have the broad-spectrum sterilization performance, because based on catalytic mechanism, so bactericidal action does not consume noble metal silver, has long-lasting and stable.Therefore, the anti-biotic material of catalytic activation oxygen formula has silver ion and oozes out the advantage that the formula anti-biotic material can't be unrealistically compared.Has regular structure as carried metal silver on the CN 101187018A aluminium flake; CN 1857309A utilizes silver powder to make the spray that the women uses has good effect to various antibacterial funguses etc.; US 20090130181 usefulness UV are with Ag
+In-situ reducing becomes metal A g on multiple natural and synthetic material, has efficient and long lasting anti-microbial property etc.
The present invention is the monatomic nano composite material catalyst air cleaning device that the interior formaldehyde in chamber (car), benzene series Organic substance, carbon monoxide, ozone and high-efficiency antimicrobial are removed in a kind of atmospheric plasma and room temperature catalysis simultaneously, relates to plasma, electrostatic precipitation, environmental catalysis and field of environment protection.It is characterized in that Organic substances such as airborne formaldehyde and benzene series thing are effectively removed through low temperature plasma, electrostatic precipitation and integral catalyst integrated technology.
Summary of the invention
The object of the present invention is to provide the monatomic nano composite material catalyst air cleaning device of the interior formaldehyde in a kind of chamber (car), benzene series Organic substance, carbon monoxide, ozone and high-efficiency antimicrobial.
The objective of the invention is to be achieved through the following technical solutions:
Realize the technical scheme of purpose: airborne formaldehyde, benzene series Organic substance, carbon monoxide, ozone and antibacterial and pathogenic bacteria are effectively eliminated through the integrated technology of low temperature plasma, electrostatic precipitation and catalytic oxidation, specifically by following three kinds of modes:
1. the organic removal of benzene series
The solid polymerization particulate matter that the benzene series thing obtains through plasma, charged under isoionic effect, collect in the static district then, be listed as organic purpose thereby reach the airborne benzene series of removal.Specifically comprise three kinds of reactions: (i) plasma polymerization (plasma polymerization) and plasma initiated polymerization (plasma-initiatedpolymerization) reaction obtains bigger solid polymerization particulate matter; A series of reaction (ii) takes place after high energy electron and the effect of benzene series thing be degraded to carbon dioxide (CO
2), water (H
2O), carbon monoxide (CO) and formaldehyde micromolecule such as (HCHO); The (iii) highly active oxygen species generation chemical reaction that produces of benzene series thing and plasma is oxidized to the carbon dioxide (CO of nonhazardous
2) and water (H
2O).
2. the removal of micromolecule pollutant such as formaldehyde, carbon monoxide and ozone
Formaldehyde (HCHO), ozone (O
3), carbon monoxide (CO) pollutant are no matter be present in the air or the micromolecule of the toxic effect that is generated under plasma or electrostatic interaction by the benzene series thing, can the catalyst action in integrated technology under room temperature decompose or be oxidized to the carbon dioxide (CO of nonhazardous simultaneously
2) and water (H
2O).The existence of ozone simultaneously more helps catalytic elimination formaldehyde and carbon monoxide pollution thing, because redox reaction takes place on catalyst for they.
3. the realization of sterilizing function
The present invention adopts high energy electron, ozone and catalysis triple effect sterilization technology.The first step, during the granule that carries disease germs process plasma, the antibacterial that part is adhered to is killed fast by high energy electron.In second step, the granule that carries disease germs is caught by electrostatic precipitation system, constantly stands killing of air middle and high concentration ozone.In the 3rd step, catalyst has extremely strong sterilizing ability, can kill remaining obstinate antibacterial up hill and dale.
Integrated system provided by the invention, can adopt following preparation method:
Integrated system purifier of the present invention comprises three main portions, i.e. low temperature plasma, electrostatic precipitator and catalyst.
Low temperature plasma: adopt multilayer concentric drum type brake DESIGN OF REACTOR, discharging gap is reduced into 0.2cm, can fully the electric field intensity under the equal voltage be increased like this, simultaneously since discharging gap reduce gas can be reduced by flow, the augmenting response device is handled the ability of dusty gas so greatly.Main design parameters: discharge cavity internal diameter: 2cm; Discharge cavity external diameter: 4cm; Discharge cavity length: 5cm; Discharging gap: 0.2cm; Block media: quartz glass; Dielectric thickness: 0.2cm; Activated alumina cylinder sheet material.Voltage is 1-20kV.
Electrostatic precipitator: electrostatic precipitator utilizes the Coulomb force to capture dust, and the resistance of the cleaner unit of flowing through is very little, is 98～300Pa.The voltage that uses is 1-20kV.
Catalyst: the hollandite type manganese dioxide of preparation duct doping Ag and skeleton Doped with Titanium, be coated on ceramic honey comb or the porous foam metal carrier, 80～150 ℃ of oven dry, 200～800 ℃ of roasting 1～36h, load contains two kinds of metals of gold-platinum again, 80～150 ℃ of oven dry, 200～800 ℃ of roastings 1～24 are reduced processing to the catalyst of load at last.
Performance test mainly is made up of gas generating unit, integrated system purifier and three parts of analytical tool.Gas generating unit: the neat liquid of dimethylbenzene is placed constant temperature water bath, by air bottle the steam of diformazan benzene series thing is taken out of, the temperature of regulating constant temperature water bath obtains the concentration of different xylene steam.Pass through the integrated system purifier then, the concentration of diformazan benzene series thing steam is by gas chromatogram HP 6890N gas chromatograph for determination concentration.
The technology of the present invention effect:
Advantage of the present invention
Antibacterial functions is efficiently removed and realized to integrated technology of the present invention with formaldehyde, benzene series thing, carbon monoxide and ozone catalytic simultaneously under room temperature and non-pressurized condition.Its feature: anti humility performance is strong, good stability, treatment effeciency height, treating capacity are big, handle fully, cost is low, do not have secondary pollution and do not have problems such as absorption is saturated.
Integrated technology of the present invention adopts plasma, electrostatic precipitation and ceramic honey comb or the porous foam metal integral catalyst of lower resistance, and the pressure reduction of front and back is very little when integrated technology uses, and is fit to the purification of various spaces air.
The specific embodiment
Embodiment one
Integrated system purifier of the present invention comprises three main portions, i.e. atmospheric low-temperature plasma, electrostatic precipitation part and catalyst member.
(i) atmospheric low-temperature plasma: adopt the severe non-uniform electric field corona discharge to produce the ionization daughter, a utmost point of corona electrode is two zigzag, star, linear or needle electrode, and another utmost point is a plate electrode.Voltage is direct current or the pulse voltage of 1-20kV.
(ii) electrostatic precipitator part: electrostatic precipitator is to utilize high voltage electric field to make charging particle, makes granule and the settled device of flow separation under the effect of Coulomb force.Electrostatic precipitator can capture all fine solid particles and vaporific drop, and it captures particle size range at 0.01～100 μ m, can be up to more than 99.9% to the efficiency of dust collection of PM10 and PM2.5; Because electrostatic precipitator utilizes the Coulomb force to capture dust, the resistance of the cleaner unit of flowing through is very little, about 98～300Pa.The voltage that uses is 1kV-20kV.
(iii) catalyst member: with the aqueous solution of soluble manganese salt, titanium salt and strong oxidizer according to a certain amount of mixing, in 80～100 ℃ aqueous solution, generate the precipitate of black behind vigorous stirring backflow 2～48h, filter, wash, at 100～150 ℃ of drying 1～24h, at 200～800 ℃ of roasting 1～36h, obtain the hollandite type manganese dioxide of impurity titanium then.The hollandite type manganese dioxide and the silver nitrate of impurity titanium mix in aqueous hydrogen peroxide solution in an amount of ratio, add ammonia spirit and at room temperature stir exchange 1～48h, filter then, wash, at 100～150 ℃ of drying 1～24h, at 200～800 ℃ of roasting 1～36h, obtain the adulterated hollandite type of the present invention manganese dioxide then.Take by weighing a certain amount of above-mentioned adulterated hollandite type manganese dioxide, add a certain proportion of deionized water and silicate or aluminium oxide.According to the requirement of viscosity and particle diameter, the weight ratio of binding agent and adulterated hollandite type manganese dioxide is between 1～50%, and high-speed stirred 1～24h obtains certain density adulterated hollandite type manganese dioxide serosity.Adopt the vacuum-negative pressure extraction technique that adulterated hollandite type manganese dioxide serosity is coated on the ceramic honey comb or porous foam metal of anticipating, at 200～800 ℃ of roasting 1～36h, be immersed in after the cooling in one or both noble metal precursor body aqueous solutions that contain gold and platinum, wherein the concentration of Au or Pt is 0.001～0.050mol/L, 80～150 ℃ of oven dry, 200～800 ℃ of roasting 1～24h.Then above-mentioned load integral catalyst is handled oxidation state and metallic state coexistence that 1～24h makes gold and platinum in 200～600 ℃ pure hydrogen, obtained integral catalyst of the present invention respectively.Wherein the weight ratio of platinum-Jin and adulterated hollandite type manganese dioxide is 0～10%, and platinum and platinum-Jin weight ratio is 0～100%.
Apparatus of the present invention Performance Detection: formaldehyde, benzene, toluene or dimethylbenzene are all adopted gas, and concentration is 20mg/m
2Pass through the integrated system purifier then, the product of these Organic substances and reaction uses Innova1312 gas concentration detector and trace gas analysis mass spectrograph (PTR-MS) and gas chromatogram HP 6890N gas chromatograph to analyze at reactor outlet simultaneously, and is auxiliary with HP 6890N gas chromatographicanalyzer.Ozone detects (Photometric O with ozone analyzer
3Analyzer Model 400E, Teledyne Inc, USA).Particulate matter TPx grain analyser.The anti-microbial property test is with reference to the JIS Z 2801:2000 of Japanese Industrial Standards, and Antimicrobialproducts-Test for antimicrobial activity and efficacy carries out.Test result is as shown in table 1.
Embodiment two
The integrated technology depurator that the present invention adopts, three-dimensional dimension (220*150*60), its structure and preparation are with embodiment one.(interior space is 2.4m in new coupe in test
2) carry out.Actual formaldehyde, benzene,toluene,xylene and trimethylbenzene concentration 11.2,6.4,8.1,10.9,28.6mg/m
3Test result such as table 2.
Embodiment three
The integrated technology depurator that the present invention adopts, three-dimensional dimension (400*250*180), its structure and preparation are with embodiment one.Test is at newly-decorated new house (60m
2) carry out.Actual formaldehyde, benzene,toluene,xylene and trimethylbenzene concentration 24.8,3.6,8.2,12.3,16.6mg/m
3Test result such as table 3.
Embodiment four
The integrated technology depurator that the present invention adopts, three-dimensional dimension (400*250*180), its structure and preparation are with embodiment three.Test is at newly-decorated new house (60m
2) carry out.Started shooting five minutes, actual formaldehyde, benzene,toluene,xylene and trimethylbenzene concentration and carbon monoxide and ozone all are significantly less than corresponding every standard of " IAQ (indoor air quality) standard " regulation.
Table 1 plasma voltage is to the influence of efficient in the integrated technology.
Table 2 plasma voltage is to the influence of efficient in the integrated technology.
Table 3 plasma voltage is to the influence of efficient in the integrated technology.
Claims (10)
1. the present invention is the monatomic nano composite material catalyst air cleaning device that the interior formaldehyde in chamber (car), benzene series Organic substance, carbon monoxide, ozone and high-efficiency antimicrobial are removed in a kind of atmospheric plasma and room temperature catalysis simultaneously, it is characterized in that Organic substances such as airborne formaldehyde and benzene series thing are effectively removed through low temperature plasma, electrostatic precipitation and integral catalyst integrated technologies.
2. low temperature plasma in the claim 1 is characterized in that adopting the discharge of dielectric impedance plate, impulse electric corona or direct current glow discharge plasma technique, preferably selects dielectric barrier discharge plasma technique.The voltage that uses is 1kV-20kV.
3. the integral catalyst in the claim 1 is characterized in that meeting following preparation flow:
(1) preparation of doping hollandite type manganese dioxide.
(2) with the adulterated hollandite type of above-mentioned preparation manganese dioxide coated on ceramic honey comb or porous foam metal carrier, 80～150 ℃ of oven dry, 200～800 ℃ of roasting 1～36h.
(3) catalyst cupport that (2) are prepared contains two kinds of metals of gold-platinum, 80～150 ℃ of oven dry, 200～800 ℃ of roasting 1～24h.
(4) catalyst of (3) carried metal is reduced processing, promptly obtain integral catalyst of the present invention.
4. the preparation method of adulterated hollandite type manganese dioxide in the claim 3 (1) is characterized in that adopting oxidoreduction-ion exchange synthetic:
(1) the oxidation-reduction method key step is: with the aqueous solution of soluble manganese salt, titanium salt and strong oxidizer according to a certain amount of mixing, in 80～100 ℃ aqueous solution, generate the precipitate of black behind vigorous stirring backflow 2～48h, filter, wash, at 100～150 ℃ of drying 1～24h, at 200～800 ℃ of roasting 1～36h, obtain the hollandite type manganese dioxide of impurity titanium then.
(2) the ion exchange key step is: the hollandite type manganese dioxide and the silver nitrate of impurity titanium mix in aqueous hydrogen peroxide solution in an amount of ratio, add ammonia spirit and at room temperature stir exchange 1～48h, filter then, wash, at 100～150 ℃ of drying 1～24h, at 200～800 ℃ of roasting 1～36h, obtain the adulterated hollandite type of the present invention manganese dioxide then.
5. the soluble manganese salt in the claim 4 (1) is manganese acetate (Mn (CH
3COO)
2), manganous chloride (MnCl
2), manganese nitrate (Mn (NO
3)
2) or manganese sulfate (MnSO
4) in one or more, manganese ion concentration is 0.1～5.0mol/L in its solution; Solubility titanium salt in the claim 4 (1) is titanium tetrachloride (TiCl
4), titanium ethanolate (Ti (OCH
2CH
3)
4), butyl titanate (Ti (OCH
2CH
2CH
2CH
3)
4) in one or more, titanium ion concentration is 0.1～5.0mol/L in its solution.Strong oxidizer described in the claim 4 (1) is potassium peroxydisulfate (K
2S
2O
8), sodium peroxydisulfate (Na
2S
2O
8), Ammonium persulfate. ((NH
4)
2S
2O
8), sodium chlorate (NaClO
3), potassium permanganate (KMnO
4) or hydrogen peroxide (H
2O
2) in the solution one or more, strong oxidizer concentration is 0.1～2.0mol/L in its solution, wherein the mol ratio of total metal ion is between 1: 1～10: 1 in strong oxidizer and the solution.Or feeding contains finite concentration ozone (O in solution
3) air.
6. the adulterated hollandite type manganese dioxide of claim 3 preparation is characterized in that it has and is about 0.47 * 0.47nm
2Crystal square duct size, its effective aperture approximately is 0.26nm; Contain blended Ag in the duct
0With part A g
+, contain Ti on the hollandite type manganese dioxide lattice
4+Ion; The weight ratio of Ti and hollandite type manganese dioxide is 0～50%, and the weight ratio of Ag and hollandite type manganese dioxide is 0～20%.
7. the preparation method in the claim 3 (2) is characterized in that:
(1) take by weighing a certain amount of adulterated hollandite type manganese dioxide (claim 4 preparation), add a certain proportion of deionized water and binding agent, wherein binding agent is one or more of inorganic bonds such as silicate, aluminium oxide or zirconium carbonate ammonium.According to the requirement of viscosity and particle diameter, the weight ratio of binding agent and adulterated hollandite type manganese dioxide is between 1～50%, and high-speed stirred 1～24h obtains certain density adulterated hollandite type manganese dioxide serosity.
(2) adopt the vacuum-negative pressure extraction technique that adulterated hollandite type manganese dioxide serosity is coated on the ceramic honey comb or porous foam metal of anticipating, at 200～800 ℃ of roasting 1～36h, hollandite type manganese dioxide integral catalyst obtains mixing.
8. claim 3 (3) Preparation of catalysts method, the steps include: adulterated hollandite type manganese dioxide integral catalyst is immersed in one or both noble metal precursor body aqueous solutions that contain gold and platinum, wherein the concentration of Au or Pt is 0.001～0.050mol/L, 80～150 ℃ of oven dry, 200～800 ℃ of roasting 1～24h.
9. claim 3 (4) Preparation of catalysts method the steps include: above-mentioned load integral catalyst is handled oxidation state and the metallic state coexistence that 1～24h makes gold and platinum in 200～600 ℃ pure hydrogen, obtains integral catalyst of the present invention respectively.Wherein the weight ratio of platinum-Jin and adulterated hollandite type manganese dioxide is 0～10%, and platinum and platinum-Jin weight ratio is 0～100%.
10. the integrated technology of low temperature plasma, electrostatic dust collection and room temperature catalytic oxidation in the claim 1, be useful for benzene series row Organic substances such as it is characterized in that room temperature removal benzene, toluene and dimethylbenzene all greater than 80%, remove formaldehyde, carbon monoxide and ozone all greater than 98%.
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| CN104274847A (en) * | 2013-07-04 | 2015-01-14 | 江西中科凯瑞环保催化有限公司 | Multifunctional sterilizing and deodorizing ceramic block |
| CN104324810A (en) * | 2014-10-24 | 2015-02-04 | 珠海格力电器股份有限公司 | Electrostatic dust removal device |
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| CN109772159A (en) * | 2019-03-14 | 2019-05-21 | 中山大学 | A kind of amorphous state manganese oxide catalyst and its preparation method and application |
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| CN106064417A (en) * | 2016-07-28 | 2016-11-02 | 东南大学 | VOCs removing means in a kind of sheet material |
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| CN109012659A (en) * | 2018-07-19 | 2018-12-18 | 天津大学 | A kind of preparation method of the monatomic catalyst of activated carbon fibre of the carried noble metal for constant temperature catalyzing degradation VOCs |
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| CN109759146A (en) * | 2018-12-28 | 2019-05-17 | 上海纳米技术及应用国家工程研究中心有限公司 | It is a kind of except preparation method of formaldehyde patch and products thereof and application |
| CN109772159A (en) * | 2019-03-14 | 2019-05-21 | 中山大学 | A kind of amorphous state manganese oxide catalyst and its preparation method and application |
| CN110449177A (en) * | 2019-08-19 | 2019-11-15 | 中国科学技术大学 | A kind of multifunctional single catalyst atom and preparation method thereof for air comprehensive purification |
| CN110449177B (en) * | 2019-08-19 | 2021-01-15 | 联科华技术有限公司 | Multifunctional monatomic catalyst for air comprehensive purification and preparation method thereof |
| CN110639551A (en) * | 2019-09-26 | 2020-01-03 | 复旦大学 | Monolithic catalyst for removing benzene series at low temperature and preparation method thereof |
| WO2024041565A1 (en) * | 2022-08-26 | 2024-02-29 | 苏州科技大学 | Air purification and sterilization method |
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