CN108786802A - A kind of room temperature purify the air of a room pollutant method for preparing catalyst and its application - Google Patents
A kind of room temperature purify the air of a room pollutant method for preparing catalyst and its application Download PDFInfo
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Abstract
It purifies the air of a room the catalyst of pollutant, preparation method and applications the present invention relates to a kind of room temperature.Compound containing noble metal active component is mixed and is dissolved in water with the compound containing auxiliary element, mixed solution is added in the mixture of nano-titanium oxide colloidal sol, nano alumina sol and active carbon nanoparticles and is stirred evenly, said mixture is coated to the activated carbon ball surface through alkali treatment modifying later, be dried, roast, after reduction treatment up to catalyst.The catalyst activity component high degree of dispersion that is prepared using this method and it is distributed in that the outer surface of carrier active carbon ball, active component utilization rate is high, catalyst preparation is at low cost, which has the characteristics that detergent power is strong, purification speed is fast and purifies thorough for the pollutant that purifies the air of a room.
Description
Technical field
The invention belongs to catalysis technical fields, and in particular to a kind of room temperature purifies the air of a room the catalyst preparation of pollutant
Method and its application.
Background technology
With China's economic development, people's lives step up, products such as various decoration/finishing materials, furniture, household electrical appliances etc.
Huge numbers of families have been entered into, serious room air pollution is also thus brought, have jeopardized the physical and mental health of people.Room air pollution
Have become one of the serious environmental problems that China at this stage faces.
Indoor air pollutants mainly include machine compound（Formaldehyde, benzene homologues etc.）, inorganic compound（Ozone, ammonia,
CO etc.）And radioactive substance.World Health Organization's publication《Indoor air quality guide》It is middle that benzene, CO and formaldehyde are listed in interior
The front three of air pollution source.Wherein benzene is essentially from paint；CO is essentially from crowd's smoking, heating system and kitchen；
Formaldehyde is essentially from furniture material.Above-mentioned pollutant can generate damage to the lung of human body, brain and heart, seriously can be carcinogenic,
Even jeopardize the life of people.Therefore, indoor air pollutants purification techniques is studied, indoor air pollutants is effectively eliminated and has become
Improve the urgent task of people's living environment.
The treatment technology of traditional indoor air pollutants mainly has absorption absorption techniques, photocatalysis technology, plasma
Technology etc., but there are limited sorption capacities/need to regularly replace, need ultraviolet light, secondary pollution, safety and economic problems etc..Catalysis
Oxidation is that have many advantages, such as easy to operate, non-secondary pollution using the pollutant in activation of catalyst air, is purification Interior Space
One of the ideal method of gas pollutant.Its key problem is to develop the new catalytic material of high-performance, low cost.
The catalyst for catalytic oxidation active component of open report mainly has Pt, Au, Pd, Ag, Mn, Co, Ni etc. at present, in carrier class
Type/pattern/crystal form/pore structure, Particle size, composition metal, auxiliary agent addition etc. have done system research.CN101380574B
Disclose a kind of catalyst of the formaldehyde conversion of catalysis at room temperature, according to embodiment introduction, use titanium dioxide, aluminium oxide etc. for
Carrier, the noble metals such as Pt, Rh, Pd are active component, and alkali metal is auxiliary agent, and noble-metal-supported amount >=0.3% is catalyzed first at room temperature
Aldehyde is converted to CO2Conversion ratio and selective rate can reach 100%.The problem is that noble-metal-supported amount is still higher, and
The concentration of formaldehyde of test is excessively high, is not inconsistent up to the concentration of formaldehyde in 0.01%, with practical room air.
CN107774245A discloses the catalyst that CO is eliminated under a kind of low temperature, and the platiniferous for Nano diamond load is urged
Agent, wherein platinum load capacity are 1 ~ 7%, and Nano diamond content is 93 ~ 99%, and CO conversion ratios are up to 90% at 30 DEG C.It is existing
Problem is that reaction temperature is still higher, and catalyst is expensive.
CN103157491A discloses a kind of catalyst of catalysis oxidation volatile organic matter, and main component is mesoporous oxygen
The palladium catalyst of compound load, can be catalytically decomposed ortho-xylene at 150 ~ 250 DEG C.But reaction temperature is excessively high, it is impossible to be used in
Room temperature purifies the air of a room pollutant.
Bullion content is generally higher in the catalyst for catalytic oxidation of above-mentioned patent report, and catalyst preparation is of high cost, no
It is promoted conducive to catalyst large-scale commercial.
Catalyst for catalytic oxidation purifying contaminated object speed when that there are active component dispersion degrees is poor, active component content is low at present
Slowly（It is long the time required to reducing indoor pollutant to reduced levels）, active component content it is high when catalyst preparation is of high cost and room
The VOCs such as catalytic oxidation benzene series object are difficult under temperature（Generally use absorption method need to regularly replace sorbing material）The shortcomings that.
Therefore preparing high degree of dispersion, low-load amount, high usage can quick, thorough room temperature purify the air of a room dirt simultaneously
The catalysis material for contaminating object is significant.
Invention content
The present invention provides a kind of catalyst of room temperature purification indoor pollutant, preparation method and applications, using this method
The catalyst activity component high degree of dispersion of preparation and it is distributed in that the outer surface of carrier active carbon ball, active component utilization rate is high, urges
Agent manufacturing cost is low, and the catalyst is strong with detergent power for the pollutant that purifies the air of a room, purification speed is fast and purification
The features such as thorough.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of room temperature purify the air of a room pollutant catalyst preparation method, include the following steps：
（1）Activated carbon ball is dipped in certain density alkaline solution, takes out and drains after being soaked for a period of time under certain temperature, and
It is dried at a certain temperature；
（2）It will mix and be dissolved in water with the compound containing auxiliary element containing a certain amount of noble metal active component, will mix molten
Liquid is added in the mixture of nano-titanium oxide colloidal sol, nano alumina sol and nano active powdered carbon and stirs evenly.
（3）Said mixture is coated to activated carbon ball surface, is dried, roasted under nitrogen atmosphere later, will be roasted
Catalyst afterwards is restored in a hydrogen atmosphere up to catalyst.
Step of the present invention（1）Middle activated carbon pellets degree is 1-3mm；Alkaline solution is sodium carbonate, sodium bicarbonate, hydrogen-oxygen
Change the aqueous solution of one or both of sodium, potassium carbonate, saleratus, potassium hydroxide, a concentration of 5-20% of alkaline solution impregnates
50-80 DEG C of temperature, soaking time 2-6h are drained after immersion and in 100-120 DEG C of dry 2-6h.
The activated carbon of catalyst coating of the present invention uses alkali modification, substantially increases activated carbon adsorption formaldehyde in advance
With the ability of the pollutants such as benzene homologues.
Step of the present invention（2）Active component be double noble metal components, one of which noble metal is Pt, another
Noble metal is one kind in Pd, Ru, Ag；Compound containing auxiliary element is the compound of alkali metal containing, B, Sn.
Active component uses bimetallic component in catalyst of the present invention, and one of which component is Pt, another group
The one kind being divided into Pd, Ru, Ag, the dispersion degree of active component is improved using bimetallic component, on the other hand reduces catalysis
Agent manufacturing cost.
Step of the present invention（2）Boron-containing compound be boric acid and/or Boratex；Alkali metal compound be sodium carbonate,
One or both of potassium carbonate, sodium hydroxide, potassium hydroxide, sodium chloride, potassium chloride, sodium nitrate, potassium nitrate；Sn-containing compound
Selected from stannous acetate and/or stannous chloride.
Using boron, alkali metal and tin as auxiliary agent, the introducing of above-mentioned auxiliary agent substantially increases expensive catalyst of the present invention
The dispersion degree of metal active constituent improves the ability of catalyst cleaning pollutant, can play reduce activity component load quantity into
And reduce the effect of catalyst cost.
Step of the present invention（3）Drying temperature be 100-120 DEG C；Calcination atmosphere is nitrogen, calcination temperature 400-
550 DEG C, roasting time 2-8h；Hydrogen reducing temperature is 120-260 DEG C, recovery time 2-6h.
Catalyst of the present invention is prepared using cladding process, and precious metal catalyst component is coated in activated carbon outer surface of ball,
Air can be more efficiently purified, active component dispersion degree and utilization rate are high, and catalyst manufacturing cost is low.
The kernel of catalyst coating of the present invention use high absorption property activated carbon, catalyst coating be with
The carrier of high dispersive, the noble metal component of high catalytic activity, noble metal component is titanium oxide, aluminium oxide and active carbon nanoparticles.It should
Catalyst purifies air using the principle of absorption and catalysis oxidation, can play the role of quickly reducing indoor pollutant concentration.One
The most formaldehyde of aspect, CO can be catalytically converted into CO rapidly by the noble metal active component of catalyst coating2And water, nano oxygen
Change the oxygen that the active carbon nanoparticles being added in titanium and nano alumina sol promote pollutant by " absorption-catalysis oxidation " process
Change；On the other hand the formaldehyde that does not convert in time, CO and it is difficult to the VOCs such as the benzene homologues aoxidized at room temperature can be locked in high suction
Inside the activated carbon ball of attached amount.The catalyst through a long time can select a good opportunity after carries out heating treatment to catalyst（Rise to 100-
200℃）, can the VOCs such as the benzene homologues of activated carbon adsorption be subjected to thorough catalytic purification at this time, catalyst service life is long.
In addition, for indoor pollutant, concentration is lower to be more difficult to catalyzed conversion.Catalyst of the present invention can play only
The effect for changing low concentration pollutant in air, pollutant is enriched in the catalyst, in order to be further processed.
Grain size the < 100nm, preferably 1- of nano-oxide in nano-titanium oxide of the present invention and nano alumina sol
50nm, more preferable 20-40nm.The solid content of nano-oxide is 10-30wt%, preferably 10- in the nano-oxide colloidal sol
20wt%, with the total restatement of nano-oxide colloidal sol.The quality of titanium oxide and aluminium oxide is 1 in nano-oxide colloidal sol:4 to 4:1.
Active carbon nanoparticles powder diameter < 100nm, preferably 1-50nm, more preferable 20-40nm of the present invention.In mass,
The mass ratio of nano active powdered carbon and activated carbon ball is 1:20 to 1:40.
Applicator gross mass of the present invention（Butt）4 ~ 30wt% of catalyst gross mass, preferably 6-30wt% are accounted for, it is more excellent
Select 10-20wt%.
The mixture of coating of the present invention is mutually mixed using nano-titanium oxide colloidal sol, nano alumina sol with active carbon nanoparticles
It closes.One side complex carrier can play good peptizaiton, and the addition of another aspect nano alumina sol improves coating
Fastness.
The catalyst prepared using method of the present invention, based on overall catalyst weight（In addition to noble metal and carbon, it is other with
Oxide meter）, catalyst, which forms, includes：The noble metal of 0.01-2.0%, aluminium oxide 2-15wt%, titanium oxide 2-20wt%, oxidation
Stannous 0.1-5wt%, boron oxide 0.1-5wt%, alkali metal oxide 0.1-5wt%, carbon 65-90wt%；
It is preferred that the noble metal of 0.01-1.0%, aluminium oxide 3-15wt%, titanium oxide 3-15wt%, stannous oxide 0.2-3wt%, oxidation
Boron 0.2-3wt%, alkali metal oxide 0.1-3wt%, carbon 70-85wt%；
The noble metal of more preferable 0.02-0.5%, aluminium oxide 5-10wt%, titanium oxide 5-15wt%, stannous oxide 0.2-3wt%, oxygen
Change boron 0.2-3wt%, alkali metal oxide 0.1-2wt%, carbon 75-85wt%.
Catalyst prepared by the method for the invention, it is characterised in that the catalyst is suitable for room temperature high-efficient purification Interior Space
Gas pollutant.
Catalyst of the present invention, the advantages of combining absorption and catalysis oxidation, noble metal active component high degree of dispersion
In catalyst surface, for room temperature purify the air of a room middle formaldehyde and benzene homologues when have that detergent power is strong, purification speed is fast, net
Change thorough feature, while the manufacturing cost of catalyst is minimized.
Specific implementation mode
The method of the present invention is described in detail with reference to embodiment, but is not limited to embodiment.
Embodiment 1
The activated carbon ball of 40g 0.5-1.0mm is taken to be soaked in the aqueous sodium carbonate of 10wt% concentration, soaking at room temperature 2h is drained
It is spare in 110 DEG C of dry 4h afterwards.Take 0.033g chloroplatinic acids, 0.021g palladium bichlorides, 1.71g sodium carbonate, 0.89g boric acid, 0.67g chlorine
Change stannous be dissolved in 10g water, by the nano-titanium oxide colloidal sol of 20% concentration of 25g, 20% concentration of 15g nano alumina sol with
2g nano active powdered carbons are uniformly mixed, and above-mentioned solution are instilled in the mixture of colloidal sol and active carbon nanoparticles and are stirred evenly.It
Said mixture is coated on modified absorbent charcoal carrier afterwards, the butt carrying capacity of colloidal sol is 16%.By the activated carbon after coating
In 110 DEG C of dry 4h, 4h is roasted in 450 DEG C under nitrogen atmosphere later, the lower 200 DEG C of reduction 4h of hydrogen atmosphere is up to catalyst A.
Evaluation method：Take the above-mentioned catalyst of 5ml loaded in quartz tube reactor, under normal temperature and pressure, will contain concentration of formaldehyde is
A concentration of 5ppm of 30ppm, CO, the simulation indoor pollution air that benzene concentration is 2ppm are with 20000h-1Air speed by urging
Agent bed, the concentration of formaldehyde, CO and benzene is 0 in detection tail gas when handling 1h and 1500h.It is warming up to 150 after processing 1500h
It DEG C is heat-treated, CO is detected in tail gas2And H2O, formaldehyde, CO and benzene are not detected.
Embodiment 2
The activated carbon ball of 31.2g 0.5-1.0mm is taken to be soaked in the sodium hydrate aqueous solution of 15wt% concentration, soaking at room temperature 4h,
It is spare in 110 DEG C of dry 4h after draining.Take 0.080g chloroplatinic acids, 0.041g ruthenic chlorides, 1.92g sodium carbonate, 0.89g boric acid,
1.06g stannous chlorides are dissolved in 10g water, by the nano-titanium oxide colloidal sol of 20% concentration of 20g, 25% concentration of 20g it is nano oxidized
Aluminum sol is uniformly mixed with 3g nano active powdered carbons, above-mentioned solution is instilled in the mixture of colloidal sol and active carbon nanoparticles and is stirred
Uniformly.Said mixture is coated on modified absorbent charcoal carrier later, the butt carrying capacity of colloidal sol is 18%.After coating
Activated carbon in 120 DEG C of dry 4h, later under nitrogen atmosphere in 500 DEG C roast 4h, hydrogen atmosphere it is lower 160 DEG C reduction 4h to obtain the final product
Catalyst B.
Evaluation method：Take the above-mentioned catalyst of 5ml loaded in quartz tube reactor, under normal temperature and pressure, will contain concentration of formaldehyde is
A concentration of 5ppm of 30ppm, CO, the simulation indoor pollution air that toluene concentration is 2ppm are with 20000h-1Air speed pass through
Catalyst bed, the concentration of formaldehyde, CO and toluene is 0 in detection tail gas when handling 1h and 1500h.It heats up after processing 1500h
It is heat-treated to 120 DEG C, CO is detected in tail gas2And H2O, formaldehyde, CO and toluene are not detected.
Embodiment 3
The activated carbon ball of 40g 0.5-1.0mm is taken to be soaked in the wet chemical of 10wt% concentration, soaking at room temperature 2h is drained
It is spare in 120 DEG C of dry 4h afterwards.Take 0.20g chloroplatinic acids, 0.039g silver nitrates, 1.36g sodium bicarbonates, 1.34g boric acid, 0.58g
Stannous chloride is dissolved in 10g water, by the nano-titanium oxide colloidal sol of 30% concentration of 20g, the nano alumina sol of 20% concentration of 10g
It is uniformly mixed, above-mentioned solution is instilled in the mixture of colloidal sol and active carbon nanoparticles and stirs evenly with 2g nano active powdered carbons.
Said mixture is coated on modified absorbent charcoal carrier later, the butt carrying capacity of colloidal sol is 16%.By the activity after coating
Charcoal roasts 3h, the lower 120 DEG C of reduction 4h of hydrogen atmosphere is up to catalyst under nitrogen atmosphere in 550 DEG C later in 100 DEG C of dry 4h
C。
Evaluation method：Take the above-mentioned catalyst of 5ml loaded in quartz tube reactor, under normal temperature and pressure, will contain concentration of formaldehyde is
A concentration of 5ppm of 30ppm, CO, the simulation indoor pollution air that ethylbenzene concentration is 2ppm are with 20000h-1Air speed pass through
Catalyst bed, the concentration of formaldehyde, CO and ethylbenzene is 0 in detection tail gas when handling 1h and 1500h.It heats up after processing 1500h
It is heat-treated to 120 DEG C, CO is detected in tail gas2And H2O, formaldehyde, CO and ethylbenzene are not detected.
Embodiment 4
The activated carbon ball of 41.5g 0.5-1.0mm is taken to be soaked in the potassium hydroxide aqueous solution of 15wt% concentration, soaking at room temperature 2h,
It is spare in 100 DEG C of dry 6h after draining.Take 0.11g chloroplatinic acids, 0.059g palladium bichlorides, 1.71g sodium carbonate, 1.26g boric acid,
0.35g stannous chlorides are dissolved in 10g water, by the nano-titanium oxide colloidal sol of 25% concentration of 20g, 30% concentration of 10g it is nano oxidized
Aluminum sol is uniformly mixed with 1.4g nano active powdered carbons, above-mentioned solution is instilled in the mixture of colloidal sol and active carbon nanoparticles and is stirred
It mixes uniformly.Said mixture is coated on modified absorbent charcoal carrier later, the butt carrying capacity of colloidal sol is 16%.It will coating
Activated carbon afterwards roasts 4h under nitrogen atmosphere in 400 DEG C later in 120 DEG C of dry 4h, and the lower 160 DEG C of reduction 4h of hydrogen atmosphere is
Obtain catalyst D.
Evaluation method：Take the above-mentioned catalyst of 5ml loaded in quartz tube reactor, under normal temperature and pressure, will contain concentration of formaldehyde is
A concentration of 5ppm of 30ppm, CO, the simulation indoor pollution air that benzene concentration is 2ppm are with 20000h-1Air speed by urging
Agent bed, the concentration of formaldehyde, CO and benzene is 0 in detection tail gas when handling 1h and 1500h.It is warming up to 130 after processing 1500h
It DEG C is heat-treated, CO is detected in tail gas2And H2O, formaldehyde, CO and benzene are not detected.
Comparative example 1
This example prepares the activated carbon ball used in catalyst using 5ml embodiments 1（Without any processing, i.e. catalyst E）Carry out room
The purification of interior pollutant, simulation gas composition and evaluation condition are with embodiment 1, first in detection tail gas when gas 1h is simulated in processing
A concentration of the 0 of aldehyde, CO and benzene detects formaldehyde, CO and benzene after processing tail gas 100h in tail gas, i.e. activated carbon adsorption reaches
It is saturated and penetrates.
Comparative example 2
This example used catalyst（Catalyst F）In be free of active carbon nanoparticles and activated carbon ball, the same embodiments of the other compositions of catalyst
2, simulation gas forms and evaluation condition such as embodiment 2.Toluene is detected in tail gas when processing simulation gas treatment 1h, i.e.,
The catalyst does not have the ability of purifying benzene object.
Comparative example 3
This example used catalyst（Catalyst G）Alumina sol, nano active powdered carbon and alkali metal, boron, tin are not used when preparation
Equal auxiliary agents, other preparation processes are the same as catalyst described in embodiment 3, simulation gas composition and evaluation condition such as embodiment 3.Handle mould
A concentration of the 0 of formaldehyde in detection tail gas when quasi- gas 1h, CO and ethylbenzene detects first after processing tail gas 300h in tail gas
The ability of aldehyde, CO and ethylbenzene, catalyst oxidation, purification pollutant is poor, and only part formaldehyde and CO are by timely oxidation point
Solution, a large amount of indoor air pollutants are adsorbed by activated carbon ball, and catalyst is caused adsorption saturation and to penetrate quickly.
1 simulated air pollutant of table through it is of the present invention it is catalyst cleaning after result
The results are shown in Table 1 after catalyst treatment of the present invention for simulated air pollutant.As shown in Table 1, of the present invention
Catalyst A to catalyst D has the ability of very strong purifying air pollution object, when continuous processing 1500h also can be by simulated air
Pollutant is fully cleaned up, and is heated up after running 1500h to sealing up for safekeeping when the pollutant of catalytic inner is handled in tail gas
Formaldehyde, CO and benzene homologues are not detected, show that there is the catalyst good reliability, catalyst to be heat-treated to restore to inhale
CO is generated when attached ability with high selectivity2, air secondary will not be caused to pollute.It is more real in view of practical pollutant concentration in air
Apply that example is low, is more difficult to penetrate, and air cleaning facility generally intermittently uses, it is contemplated that catalyst of the present invention can be run 8-12 months
Primary heating heat treatment is carried out afterwards, and catalyst is easy to use.
Comparative example 1（Catalyst E）Illustrate, uses the easy adsorption saturation of activated carbon adsorption merely, and then lose air purification work(
Energy.Comparative example 2 illustrates the ability that the catalyst F of not carbonaceous material does not have purifying benzene object at room temperature.The explanation of comparative example 3 is not adopted
Ability with complex carrier and the catalyst G purifying air pollution objects of modified additive preparation is relatively low, and catalyst cannot be fully cleaned up
Air pollutants and easy adsorption saturation.
Claims (10)
- The preparation method of the catalyst of pollutant 1. a kind of room temperature purifies the air of a room, includes the following steps：（1）Activated carbon ball is dipped in certain density alkaline solution, takes out and drains after being soaked for a period of time under certain temperature, and It is dried at a certain temperature；（2）A certain amount of noble metal active component is mixed and is dissolved in water with the compound containing auxiliary element, by mixed solution It is added in the mixture of nano-titanium oxide colloidal sol, nano alumina sol and nano active powdered carbon and stirs evenly；（3）Said mixture is coated to activated carbon ball surface, is dried, roasted under nitrogen atmosphere later, after roasting Catalyst is restored in a hydrogen atmosphere up to catalyst.
- 2. according to the method described in claim 1, it is characterized in that, the step（1）Middle activated carbon pellets degree is 1-3mm；Alkali Property solution be sodium carbonate, sodium bicarbonate, sodium hydroxide, potassium carbonate, saleratus, one or both of potassium hydroxide it is water-soluble Liquid, a concentration of 5-20% of alkaline solution, 50-80 DEG C of soaking temperature, soaking time 2-6h are drained and dry in 100-120 DEG C after immersion Dry 2-6h.
- 3. according to the method described in claim 1, it is characterized in that, the step（2）Active component be double noble metal components, One of which noble metal is Pt, another noble metal is one kind in Pd, Ru, Ag；Compound containing auxiliary element is containing alkali The compound of metal, B, Sn.
- 4. according to the method described in claim 1, it is characterized in that, the step（2）Boron-containing compound be boric acid and/or boron Sour sodium；Alkali metal compound is sodium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide, sodium chloride, potassium chloride, sodium nitrate, nitric acid One or both of potassium；Sn-containing compound is selected from stannous acetate and/or stannous chloride.
- 5. according to the method described in claim 1, it is characterized in that, the step（3）Drying temperature be 100-120 DEG C；Roasting Burning atmosphere is nitrogen, and calcination temperature is 400-550 DEG C, roasting time 2-8h；Hydrogen reducing temperature is 120-260 DEG C, reduction Time is 2-6h.
- 6. according to the method described in claim 1, it is characterized in that, nanometer in the nano-titanium oxide and nano alumina sol Grain size the < 100nm, preferably 1-50nm, more preferable 20-40nm of oxide；Nano-oxide in the nano-oxide colloidal sol Solid content is 10-30wt%, preferably 10-20wt%, with the total restatement of nano-oxide colloidal sol, in nano-oxide colloidal sol titanium oxide and The quality of aluminium oxide is 1:4 to 4:1.
- 7. according to the method described in claim 1, it is characterized in that, active carbon nanoparticles powder diameter the < 100nm, preferably 1- 50nm, more preferable 20-40nm；In mass, the mass ratio of nano active powdered carbon and activated carbon ball is 1:20 to 1:40.
- 8. according to the method described in claim 1, it is characterized in that, in terms of butt, it is total that the applicator gross mass accounts for catalyst 4 ~ 30wt% of quality, preferably 6-30wt%, more preferable 10-20wt%.
- 9. according to catalyst made from claim 1-9 any one of them methods, which is characterized in that based on overall catalyst weight （It is other in terms of oxide in addition to noble metal and carbon）, catalyst, which forms, includes：The noble metal of 0.01-2.0%, aluminium oxide 2- 15wt%, titanium oxide 2-20wt%, tin oxide 0.1-5wt%, boron oxide 0.1-5wt%, alkali metal oxide 0.1-5wt%, carbon 65- 90wt%；It is preferred that the noble metal of 0.01-1.0%, aluminium oxide 3-15wt%, titanium oxide 3-15wt%, tin oxide 0.2-3wt%, boron oxide 0.2-3wt%, alkali metal oxide 0.1-3wt%, carbon 70-85wt%；The noble metal of more preferable 0.02-0.5%, aluminium oxide 5-10wt%, titanium oxide 5-15wt%, tin oxide 0.2-3wt%, oxidation Boron 0.2-3wt%, alkali metal oxide 0.1-2wt%, carbon 75-85wt%.
- 10. according to catalyst made from claim 1-10 any one of them methods, it is characterised in that the catalyst is suitable for Room temperature high-efficient purification indoor air pollutants.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252114A (en) * | 2019-06-20 | 2019-09-20 | 深圳市中拓智森环保科技有限公司 | Air cleaning agent solution and preparation method thereof |
| CN110465301A (en) * | 2019-08-23 | 2019-11-19 | 四川省达科特能源科技股份有限公司 | A kind of activated-carbon catalyst and its preparation method and application |
| CN116177529A (en) * | 2023-03-02 | 2023-05-30 | 合肥工业大学 | Preparation method of biomass-based two-dimensional nano carbon material and two-dimensional nano carbon material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1040870A2 (en) * | 1999-03-29 | 2000-10-04 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Noble metal based catalyst functioning at ordinary temperature and method for destroying noxious gaseous compounds using the same |
| CN102921431A (en) * | 2012-10-19 | 2013-02-13 | 大连凯特利催化工程技术有限公司 | Catalyst used in oxidative desorption of carbon monoxide in hydrogen and preparation method for catalyst |
| CN104258811A (en) * | 2014-10-10 | 2015-01-07 | 烟台迪康环境科技有限公司 | Preparation method of air purification agent |
| CN104941578A (en) * | 2015-05-26 | 2015-09-30 | 漳州市宇诚新型材料有限公司 | Silica-gel composite particles for purification and preparation method thereof |
| CN106582637A (en) * | 2016-12-08 | 2017-04-26 | 中国科学院上海高等研究院 | Formaldehyde oxidation catalyst and preparation method thereof |
| CN107398272A (en) * | 2017-08-09 | 2017-11-28 | 西安凯立新材料股份有限公司 | A kind of formaldehyde room temperature catalysis composite carried catalyst and preparation method thereof |
-
2018
- 2018-07-16 CN CN201810776983.6A patent/CN108786802A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1040870A2 (en) * | 1999-03-29 | 2000-10-04 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Noble metal based catalyst functioning at ordinary temperature and method for destroying noxious gaseous compounds using the same |
| CN102921431A (en) * | 2012-10-19 | 2013-02-13 | 大连凯特利催化工程技术有限公司 | Catalyst used in oxidative desorption of carbon monoxide in hydrogen and preparation method for catalyst |
| CN104258811A (en) * | 2014-10-10 | 2015-01-07 | 烟台迪康环境科技有限公司 | Preparation method of air purification agent |
| CN104941578A (en) * | 2015-05-26 | 2015-09-30 | 漳州市宇诚新型材料有限公司 | Silica-gel composite particles for purification and preparation method thereof |
| CN106582637A (en) * | 2016-12-08 | 2017-04-26 | 中国科学院上海高等研究院 | Formaldehyde oxidation catalyst and preparation method thereof |
| CN107398272A (en) * | 2017-08-09 | 2017-11-28 | 西安凯立新材料股份有限公司 | A kind of formaldehyde room temperature catalysis composite carried catalyst and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 上海交通大学: "《机电词典》", 31 October 1991, 机械工业出版社 * |
| 朱舜等: "活性炭纤维负载金属铂的制备及催化氧化甲醛", 《纺织学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252114A (en) * | 2019-06-20 | 2019-09-20 | 深圳市中拓智森环保科技有限公司 | Air cleaning agent solution and preparation method thereof |
| CN110465301A (en) * | 2019-08-23 | 2019-11-19 | 四川省达科特能源科技股份有限公司 | A kind of activated-carbon catalyst and its preparation method and application |
| CN116177529A (en) * | 2023-03-02 | 2023-05-30 | 合肥工业大学 | Preparation method of biomass-based two-dimensional nano carbon material and two-dimensional nano carbon material |
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