CN105854592A - Air purifying material and preparation method and application thereof - Google Patents
Air purifying material and preparation method and application thereof Download PDFInfo
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- CN105854592A CN105854592A CN201610280191.0A CN201610280191A CN105854592A CN 105854592 A CN105854592 A CN 105854592A CN 201610280191 A CN201610280191 A CN 201610280191A CN 105854592 A CN105854592 A CN 105854592A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8671—Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668
- B01D53/8675—Ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/2073—Manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0258—Other waste gases from painting equipments or paint drying installations
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention relates to an air purifying material and a preparation method and application thereof and belongs to the technical field of catalyst materials. The material comprises a base material and manganite loaded on the base material. The material is characterized in that the base material is aluminum or aluminum alloy, and manganite is birnessite type manganite. The material is easy and convenient to use in the coating process and large-scale production is easy. A manganite catalyst is high in loading rate on the surface of the aluminum base material, firm and not likely to fall off. The purifying material can quickly decompose formaldehyde or ozone in air at room temperature, purification cost is low, and the catalyst can be quickly regenerated in a heating mode.
Description
Technical field
The invention belongs to catalyst material field, especially relate to a kind of gaseous contamination having and can be used in room air
Thing scavenging material and the preparation method of this scavenging material.
Background technology
Newly-decorated house air quality exceeds standard very universal, and this is substantial amounts of mainly due to finishing and furniture material release
Gaseous contaminant causes.The main gaseous contaminant of room air has formaldehyde, benzene homologues, ammonia, TVOC etc., and wherein formaldehyde has
Strong impulse, is one of pollutant the most serious in room air.The time of modern about more than 90% is in room
Inside spend.Therefore, in order to healthy, the control technology of research and development gaseous contaminant including formaldehyde is very must
Want.
Catalytic oxidation technologies is considered as the relatively effective technology of formaldehyde of removing at present.It is supported on the carriers such as titanium dioxide
Noble metal nano particles (such as Pt, Pd, Ag) PARA FORMALDEHYDE PRILLS(91,95) at normal temperatures degraded have higher activity
(Environ.Sci.Technol.2015,49,2384；Environ.Sci.Technol.2015,49,6637；
J.Mater.Chem.A,2015,3,10432).Researchers also find non-noble metal oxide, as manganese dioxide, cerium oxide,
The removal effect of the PARA FORMALDEHYDE PRILLS(91,95)s such as cobalt oxide, finds that these catalyst PARA FORMALDEHYDE PRILLS(91,95) at normal temperatures also has higher degrading activity (RSC
Adv.,2015,5,434；ACS Catal.2015,5,2260；Environ.Sci.Technol.2011,45,3628).These
Catalyst prod is mainly based on powder body, and powder-type catalyst has inconvenience in actual catalytic applications more, so should in reality
Catalyst and some adjuvants (binding agent) are supported on carrier, such as on the aluminium oxide of porous and ceramic honey comb in
(CN102950029A；CN104209110A).This kind of catalyst carrier mostly is framework material, has that intensity is high, porosity is big
Advantage.Although these methods solve the loading problem of fine catalyst, but on the one hand sometimes pollute in actual use
The load of thing may be beyond the capacity of decomposition of catalyst, and catalyst can not remove pollutant timely and effectively；On the other hand, formaldehyde
The intermediate product such as first acid plus carbonate decomposed can not decompose from catalyst surface and removing in time, thus causes catalyst performance
It is gradually reduced.Therefore, how to develop a kind of low windage, can quickly remove the technology of the pollutant of catalyst surface, become this
The bright problem needing to solve.
The existing function by both air-conditioner and the air purifier usual way that combines is by air cleaner/mould
Block is integrated on room air conditioner, as being affixed directly to by purifying device for air conditioner on the air inlet at indoor apparatus of air conditioner top, works as pass
When closing air purification function, the air intake of air-conditioner can be had adverse effect on by air cleaner.Or by the side of guide rail
Air-purifying module is placed in the air inlet of air-conditioner by formula, and when opening purification pattern, module is moved to air inlet by guide rail；
When closing purification pattern, module is removed by the way of flexible by guide rail, to ensure the air-out efficiency of air inlet.But gas exists
Through air channel, by the drag effects of purifier/module, major part gas is not exported by purifier/module, this
Also it is to cause the air conditioning purge efficiency with air-cleaning function using prior art low and clean-up effect is poor.Therefore, how
The Air purification of air cleaner can be played, air cleaning can be made when only opening air temperature modification function again
Device/module windage value is low, thus does not affect the intake of air-conditioning, and this has become problem demanding prompt solution.
Summary of the invention
The present invention is directed to the problem that prior art exists, it is proposed that one purifies air material and preparation method thereof and answers
With.The present invention by easy for Mn oxide, be supported on securely in aluminum and the aluminium alloy module of low windage.The inventive method preparation
Slurry adds water-based adhesive, makes catalyst be coated in aluminum primary surface well, ensure the catalytic performance of catalyst, just simultaneously
In industrial applications.
A kind of material purifying air of the present invention, including base material and Mn oxide, Mn oxide is supported on base material institute
Stating base material is aluminum or aluminum alloy, and described Mn oxide is birnessite type Mn oxide.
A kind of preparation method purifying air material of the present invention, this preparation method comprises the following steps:
(1) it is that 1-5:1-8:2-10 prepares catalyst pulp with catalyst, water-based adhesive, the part by weight of water；
(2) surface is processed in the slurry of the most uniformly aluminum or aluminum alloy base material immersion step (1) of profit water, to aluminum base
Or uniform hanging on aluminum alloy base material；
(3) it is taken out to be completely dried from slurry；
The granule of described catalyst is more than 100 mesh, for birnessite manganese dioxide catalyst；Described catalyst pulp
PH value is 5-9.
In described step (1), the solid content of slurry is 5-50%.
Described aluminum or aluminum alloy base material carries out defoaming treatment to slurry before dipping.
It is to remove the grease contamination of aluminum primary surface, again with pure with ethanol that described surface processes the step of the most uniformly profit water
Water carries out being washed to aluminum primary surface and the most uniformly moistens water, and keeps more than 30s in profit moisture film seriality.
The alumina-base material for Supported Manganese oxide that is dried of described step (3) is put into and is machined in baking oven be completely dried.
The scavenging material of the present invention, described scavenging material may be applicable to equipment, the artware purifying air.
Advantages of the present invention is mainly reflected in:
(1) coating processes is easy, it is easy to operation, low cost, it is easy to carry out large-scale production.
(2) manganese oxide catalyst rate of uploading on aluminium base surface is high, firm and difficult drop-off.
(3) the aluminum base Supported Manganese oxide purification material prepared is prone to molding, can be processed into fin and be fixed on metal
On rod, the air-purifying module windage obtained is low, is suitable for the air purifier of various ways.As: at the aluminum of indoor apparatus of air conditioner
Coat catalyst on base heat exchanger, reach the purification to room air.
(4) scavenging material invented can the at room temperature formaldehyde in fast decoupled air or ozone, purify low cost,
And catalyst can be carried out rapid regeneration by the form of heating.
(5) on the fin of existing equipment metallic recuperator, load the catalyst of degradation of formaldehyde.Argenteous metal heat-exchange
After the area load formaldehyde catalyst of device, heat exchanger surface presents sepia.Heat exchanger is fixed on indoor apparatus of air conditioner, as attached
Fig. 3.By manipulation remote controller, air conditioning function and air-cleaning function can be realized.
(6) present invention is with aluminum and aluminium alloy for substrate loading Mn oxide, and the scavenging material of gained can be degraded for a long time
Formaldehyde in room air and ozone.
Accompanying drawing explanation
Fig. 1 is the photo before and after aluminum base Supported Manganese oxide, and wherein: Figure 1A is aluminium base, Figure 1B is Supported Manganese oxide
After aluminium base.
Fig. 2 is the electron micrograph before and after aluminium base Supported Manganese oxide, wherein: Fig. 2 A is that aluminium base Electronic Speculum is shone
Sheet, Fig. 2 B is the electromicroscopic photograph after aluminium base Supported Manganese oxide.
Fig. 3 is the photo before and after heat exchanger of air conditioner area load Mn oxide, and Fig. 3 a is unsupported, and Fig. 3 b is load
After.
Fig. 4 is the XRD schematic diagram on aluminum base before and after Supported Manganese oxide.
Fig. 5 is the effect schematic diagram that aluminum base Supported Manganese oxide static state removes formaldehyde in air.
Detailed description of the invention
Further illustrating advantages of the present invention below by specific embodiment, present invention is not carried out by the description below
Limit.
The preparation of catalyst the innovative point of non-invention, those skilled in the art can be as required according to prior art
Disclosed in method preparation needed for manganese dioxide-catalyst, or buy required manganese oxide catalyst in the market.
Embodiment 1
Weigh 20g potassium permanganate and 30g ammonium oxalate, add the water of 1L, ultrasonic be completely dissolved to potassium permanganate and ammonium oxalate,
The solution of gained is positioned in 90 DEG C of water-baths reaction 10 hours.The Mn oxide of generation is centrifugal, washing is placed in 105 DEG C of bakings
Case is dried, and i.e. obtains manganese dioxide-catalyst.Grind, take the powder body more than 100 mesh, standby.
Weigh 20g manganese dioxide powder body catalyst, add 20g acryloid cement, 40g deionized water, mix, consolidate
Content is about the slurry of 25%, and regulation slurry pH is 9, then removes the foam of pulp surface.
Being 0.74g by quality, thickness is that the aluminum base fin of 0.3mm is immersed in supersound washing 20min in alcoholic solution, removes
The oils and fats on surface.With deionized water supersound washing to aluminum primary surface complete wetting, (profit moisture film seriality keeps more than 30s to bear in taking-up
Carry is better), standby.
Surface-treated aluminum base fin is immersed in above-mentioned slurry, stirring, uniform hanging to aluminum base fin, then
It is taken out to be completely dried.For fast obtaining finished product, it is placed in 60 DEG C of oven drying 4h, obtains the manganese oxide catalyst of aluminum base load
Scavenging material.(the computing formula=(aluminum matrix after supported catalyst of rate uploaded by catalyst to calculate the rate of uploading of catalyst
Amount-load before aluminum matrix amount)/load before aluminum matrix amount), result is 62.5%.
Figure 1A and Figure 1B is the photo before and after aluminum base fin load manganese dioxide-catalyst.Before load, aluminum base fin presents
The metallic luster of silver color；After load, the surface of fin becomes black completely, and this explanation manganese dioxide has been completely covered on aluminum base
The surface of fin.
Embodiment 2
Weigh 25g potassium permanganate, add the water of 1L, ultrasonic be completely dissolved to potassium permanganate, be subsequently added the methanol of 1.5L,
The solution of gained is positioned at water-bath 45 DEG C reaction 6 hours.The Mn oxide of generation is centrifugal, washing is placed in 105 DEG C of bakings
Case is dried, and i.e. obtains manganese dioxide-catalyst.Grind, take more than the powder body of 100 mesh, standby.
Weigh 25g manganese dioxide powder body catalyst, add 10g polyurethane binder and 20g deionized water, mixing, obtain
Solid content is about the slurry of 45.5%, and regulation slurry pH is 7.
Being 0.74g by quality, thickness is that the aluminium substrate of 0.3mm is immersed in supersound washing 20min in alcoholic solution, takes out and uses
Deionized water supersound washing is to aluminum primary surface complete wetting (profit moisture film seriality keeps the better of more than 30s load), standby
With.
Surface-treated aluminium base is immersed in slurry, stirs back and forth, uniform hanging to aluminium base, after be taken out to
It is completely dried.For fast obtaining finished product, it is placed in 60 DEG C of oven drying 4h, obtains the purification of the manganese oxide catalyst of aluminum base load
Material.Calculating the rate of uploading of catalyst, result is 76.4%.
Fig. 2 A and Fig. 2 B is the electromicroscopic photograph before and after aluminium base load manganese dioxide-catalyst.Before load, the table of aluminium base
Face is relatively smooth；After load, the surface of aluminium base has substantial amounts of catalyst granules, and the size of granule is homogeneous, dispersion
Good.
Fig. 4 is the XRD figure before and after aluminium base load manganese dioxide-catalyst.Curve below Fig. 3 is unsupported aluminum base
The crystal formation figure of plate, it can be seen that the peak position that goes out at 2theta angle is set to the typical characteristic peak of metallic aluminium.Curve above is
The crystal formation figure of coating manganese dioxide-catalyst.It can be seen that but after aluminium base load manganese dioxide-catalyst, the characteristic peak of aluminum subtracts
Weak, two diffraction maximums occur at 12.3 ° and 24.6 °, this is the feature of manganese dioxide-catalyst of typical birnessite type
Peak, this also illustrates that manganese dioxide-catalyst is successfully coated in the surface of aluminium base.
Fig. 5 be on the surface of the positive temperature coefficient heating module of aluminum base Supported Manganese oxide under room temperature and heating condition
The removal effect of static test formaldehyde.As can be seen from the figure the Mn oxide being supported on aluminum primary surface can preferably remove first
Aldehyde.When heated, by the Degradation Formaldehyde of about 140mg/m3 to 10mg/m3 in 2 hours, illustrate by aluminium flake is heated permissible
Accelerate the speed of Mn oxide degradation of formaldehyde.
Embodiment 3
Report according to (Appl.Catal.B:Environ., 2016,189,210), weigh 25g potassium permanganate, 20g mono-water
Close manganese sulfate, add the water of 1L, ultrasonic be completely dissolved to medicine, the solution of gained is positioned in hydrothermal reaction kettle at 140 DEG C
Reaction 12h.The manganese dioxide of generation is centrifugal, washing is placed in 105 DEG C of oven dryings, and i.e. obtaining can be with the titanium dioxide of deodorization oxygen
Mn catalyst.Grind, take more than the powder body of 100 mesh, standby.
Weigh the manganese dioxide powder body catalyst of 10g, add 80g acryloid cement and 100g deionized water, mixing, obtain
Be about the slurry of 5.3% to solid content, regulation slurry pH is 5.
Being 0.74g by quality, thickness is that the aluminium substrate of 0.3mm is immersed in supersound washing 20min in alcoholic solution, takes out and uses
Deionized water supersound washing is to aluminum primary surface complete wetting (profit moisture film seriality keeps the better of more than 30s load), standby
With.
Surface-treated aluminium base is immersed in slurry, stirs back and forth, uniform hanging to aluminium base, after be taken out to
It is completely dried.For fast obtaining finished product, it is placed in 60 DEG C of oven drying 4h.After drying, then immerse slurry carries out secondary load, dry
Dry.After three dippings, until powder is completely covered the surface of aluminum base, i.e. obtain the purification of the manganese oxide catalyst of aluminum base load
Material.Calculating the rate of uploading of catalyst, result is 45.2%.
Embodiment 4
By on the fin of the metallic recuperator of air-conditioner according to the present invention method load degradation of formaldehyde catalyst (as attached
Fig. 3).After the area load formaldehyde catalyst of argenteous metallic recuperator, heat exchanger surface be coated with one layer uniform dark brown
Color manganese oxide catalyst.Heat exchanger is fixed on indoor apparatus of air conditioner, by manipulation remote controller, can realize air conditioning function and
Air-cleaning function.When operating air conditioner, starting air purification mode, room air enters air-conditioner shell by air inlet
Internal heat exchanger, through heat exchange, the pollutant in air are degraded by the catalyst of heat exchanger surface, the cleanest sky
Gas flows out from air outlet.Reach air cleaning.Catalyst at refrigeration mode or room temperature MODE of operation can carry out Interior Space
The degraded of gas pollutant；When heating mode opened by air-conditioning, the heat that heat exchanger comes out can rapidly process in catalysis
The intermediate product that agent surface is accumulative, and significantly improve the purification to formaldehyde in indoor air.
Also can use being directly prepared in product is placed in the space needing to purify air with the material of the present invention, at room temperature
Formaldehyde in Direct Resolution air and ozone, then by heating, catalyst is carried out rapid regeneration.
Claims (7)
1. purifying a material for air, including base material and Mn oxide, Mn oxide is supported on base material, it is characterised in that
Described base material is aluminum or aluminum alloy, and described Mn oxide is birnessite type Mn oxide.
2. the preparation method purifying air material, it is characterised in that this preparation method comprises the following steps:
(1) it is that 1-5:1-8:2-10 prepares catalyst pulp with catalyst, water-based adhesive, the part by weight of water；
(2) surface is processed in the slurry that the aluminum or aluminum alloy base material of completely uniformly profit water immerses step (1), to aluminium base or
Uniform hanging on aluminum alloy base material；
(3) it is taken out to be completely dried from slurry；
The granule of described catalyst is more than 100 mesh, for birnessite manganese dioxide catalyst；The pH value of described catalyst pulp
For 5-9.
Preparation method the most according to claim 2, it is characterised in that in described step (1), the solid content of slurry is 5-
50%.
Preparation method the most according to claim 2, it is characterised in that described aluminum or aluminum alloy base material is before dipping to slurry
Material carries out defoaming treatment.
Preparation method the most according to claim 2, it is characterised in that described surface processes the step of the most uniformly profit water and is
By the grease contamination of ethanol removing aluminum primary surface, carry out being washed to aluminum primary surface with pure water again and the most uniformly moisten water, and in profit
Moisture film seriality keeps more than 30s.
Preparation method the most according to claim 2, it is characterised in that being dried as Supported Manganese oxide of described step (3)
Alumina-base material put into and baking oven be machined to be completely dried.
7. according to the application of the scavenging material described in claim 1-6, it is characterised in that described scavenging material may be applicable to
Equipment that air is purified, artware.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610280191.0A CN105854592A (en) | 2016-04-28 | 2016-04-28 | Air purifying material and preparation method and application thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106823781A (en) * | 2017-01-10 | 2017-06-13 | 清华大学 | A kind of air purifier for removing indoor VOCs and preparation method thereof |
| CN107774131A (en) * | 2017-11-09 | 2018-03-09 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of ball shaped nano composite removed for formaldehyde and products thereof and application |
| CN108452766A (en) * | 2018-04-04 | 2018-08-28 | 沈阳化工大学 | A kind of preparation method of tripolite loading birnessite manganese dioxide |
| CN108940265A (en) * | 2018-07-05 | 2018-12-07 | 宁波工程学院 | A kind of catalyst and preparation method thereof of room temperature catalytic oxidation formaldehyde |
| CN109173645A (en) * | 2018-10-19 | 2019-01-11 | 佛山市顺德区金磊环保科技有限公司 | A kind of purifying formaldehyde material modification processes, purifying formaldehyde material and device |
| CN109529613A (en) * | 2018-12-26 | 2019-03-29 | 深圳市中建南方环境股份有限公司 | A kind of method and purification system of the formaldehyde of mineralising at room temperature |
| CN112851991A (en) * | 2021-01-08 | 2021-05-28 | 江苏厚生新能源科技有限公司 | Diaphragm and preparation method and application thereof |
| CN114471579A (en) * | 2022-01-25 | 2022-05-13 | 长沙瑞庭科技有限公司 | Ozone catalyst and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106823781A (en) * | 2017-01-10 | 2017-06-13 | 清华大学 | A kind of air purifier for removing indoor VOCs and preparation method thereof |
| CN107774131A (en) * | 2017-11-09 | 2018-03-09 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of ball shaped nano composite removed for formaldehyde and products thereof and application |
| CN108452766A (en) * | 2018-04-04 | 2018-08-28 | 沈阳化工大学 | A kind of preparation method of tripolite loading birnessite manganese dioxide |
| CN108940265A (en) * | 2018-07-05 | 2018-12-07 | 宁波工程学院 | A kind of catalyst and preparation method thereof of room temperature catalytic oxidation formaldehyde |
| CN108940265B (en) * | 2018-07-05 | 2021-08-27 | 宁波工程学院 | Catalyst for catalytic oxidation of formaldehyde at room temperature and preparation method thereof |
| CN109173645A (en) * | 2018-10-19 | 2019-01-11 | 佛山市顺德区金磊环保科技有限公司 | A kind of purifying formaldehyde material modification processes, purifying formaldehyde material and device |
| CN109529613A (en) * | 2018-12-26 | 2019-03-29 | 深圳市中建南方环境股份有限公司 | A kind of method and purification system of the formaldehyde of mineralising at room temperature |
| CN112851991A (en) * | 2021-01-08 | 2021-05-28 | 江苏厚生新能源科技有限公司 | Diaphragm and preparation method and application thereof |
| CN114471579A (en) * | 2022-01-25 | 2022-05-13 | 长沙瑞庭科技有限公司 | Ozone catalyst and preparation method thereof |
| CN114471579B (en) * | 2022-01-25 | 2024-06-04 | 长沙瑞庭科技有限公司 | Ozone catalyst and preparation method thereof |
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Application publication date: 20160817 |