CN110404554A - A kind of preparation method preparing VOCs catalyst using iron content solid waste - Google Patents
A kind of preparation method preparing VOCs catalyst using iron content solid waste Download PDFInfo
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Abstract
The present invention relates to a kind of preparation methods that VOCs catalyst is prepared using iron content solid waste, and its catalysis oxidation for volatile organic compounds.Using the useless carrier material with the mixed-powder of organic matter as catalyst of iron content solid, carried metal (one of Mn, Fe, Ni, Ce and V) oxide active component, and adulterate the auxiliary agent (nitrate and CaCO of Fe, Co, Ce3One of) prepare can efficiently catalyzing and oxidizing VOCs new catalyst.Wherein, the catalyst that load manganese element adulterates Ce elements simultaneously has optimal catalytic activity.
Description
Technical field
The invention belongs to air contaminant treatment fields, and in particular to a kind of system that VOCs catalyst is prepared using iron content solid waste
Preparation Method.
Background technique
As the key precursor object for forming atmospheric ozone and fine particle pollution, volatile organic matter (Volatile
Organic Compounds, VOCs) emission control be current atmospheric prevention and cure of pollution work emphasis.The property of will volatilize organic matter
It is defined as participating in the organic compound of atmospheric photochemical reaction, including non-methane hydrocarbon (alkane, alkene, alkynes, aromatic hydrocarbon
Deng), oxygen-bearing organic matter (aldehyde, ketone, alcohol, ether etc.), chlorinated organics, itrogenous organic substance, sulfurous organic compound etc., including containing
Most of VOCs including chlorine organic has high toxicity, partially has (potential) carcinogenicity, influences the same of atmosphere quality
When be also directly or indirectly detrimental to health.Currently used VOCs pollution control technology mainly has flame combustion method, catalysis
Combustion method, absorption method, absorption process, condensation method etc., as a kind of traditional VOCs treatment technology, catalytic combustion technology with
By means of its treatment effeciency height, low energy consumption and feature without secondary pollution becomes most one of technology of application prospect, wherein high-performance
The exploitation of catalysis material is the core of the technical system, participates in the catalyst of catalyst combustion reaction mainly by carrier, coating and work
Property component three parts composition, wherein carrier is the key that catalyst composition part, and the effect of carrier is in addition to supporting dispersion activity
Group exceptionally, also can obviously improve catalytic activity, and the dispersion performance for being not only because active component after loading is improved, more
It is because having synergistic effect between the two in load percentage appropriate.It is carried at present using relatively broad VOCs catalyst
Body material is TiO2, such as WO3-V2O5/TiO2、MnOx/TiO2Deng.However, TiO2The production preparation process of carrier material is complicated, grasps
It is required height, causes catalyst prod selling at exorbitant prices, is unfavorable for the sale of catalyst prod and pushing away for VOCs catalysis and purification technology
Wide application.Therefore, inexpensive carrier is developed, the efficient catalyst for developing catalytic degradation VOCs is carried out, for administering
VOCs pollution has important practical significance.
Steel smelting procedure needs to pass through the production processes such as mining, ore dressing, sintering, ironmaking, steel-making, steel rolling, smelting iron and steel
While can also generate iron content solid waste.Iron content solid waste distribution in China's is wide, yield is big, but its synthesis benefit at present
With rate is too low, utilization ways are limited, and the bulk deposition of iron content solid waste will also result in environmental pollution, the wasting of resources,
The problems such as handling costly and Tailings Dam dam break hidden danger.Realize that the comprehensive utilization of iron content solid waste, exploitation have high attached
Add the output value, economical and effective, environmentally protective functional material, be the important developing direction of iron content disposition of solid waste technology,
It will can bring huge Social benefit and economic benefit.Iron content solid waste itself has certain absorption property more,
Bulk composition shows as chemical inertness, and has preferable stability and mechanical strength, is highly suitable for catalyst carrier material
Material；In addition, these metallic elements can be with one containing the metallic element that a certain amount of chemical property is active in iron content solid waste
Determine the catalytic performance that catalyst is promoted in degree.However, related at present utilize iron content solid waste to make carrier preparation for urging
The research for changing degradation VOCs catalyst has not yet to see report, and correlative study is in the blank phase.
Summary of the invention
The purpose of the present invention is to provide a kind of methods for preparing VOCs catalyst using iron content solid waste, and this method is with iron content
Solid waste is primary raw material, and novel carriers are prepared using organic matter as auxiliary agent, then can using being prepared using wet dip method
The novel low-cost catalyst of efficient degradation VOCs, while also the resource utilization for large iron content solid waste provides
One new way.
The purpose of the present invention is achieved through the following technical solutions:
A kind of the step of preparation method preparing VOCs catalyst using iron content solid waste, this method, is:
1) after with iron content solid waste and the screening of organic matter co-grinding, then 400~650 DEG C of 1~6h of roasting in a nitrogen atmosphere
Obtain catalyst carrier；The quality group of the iron content solid waste becomes SiO2: 35~45%；Fe2O3: 5~15%；TiO2: 1~
8%；MgO:8~15%；Other: 17~51%；It is 1 that the organic matter, which accounts for iron content solid waste and the mass fraction of organic matter total amount,
~5%；
2) wet dip method, using the catalyst carrier of step 1) as carrier material, metal oxide-loaded activity are used
Component, and auxiliary agent is adulterated, metal species are one of Mn, Fe, Ni, Ce and V in the metal oxide active component, are helped
Agent is the nitrate and CaCO of Fe, Co, Ce3One of；Metal species and metal in auxiliary agent in metal oxide active component
Type is different；Prepare the VOCs catalyst of high efficiency, low cost degradation VOCs.
Partial size after crushing and screening after the iron content solid waste and organic matter mixing is between 180~300 mesh.
The process of wet dip method is: weighing the catalyst carrier of step 1), disperses catalyst carrier in containing metal M
(A salt refers to the nitre of Fe, Co, Ce as auxiliary element to salt (M refers to one of metal Mn, Fe, Ni, Ce and V) with metal A salt
Hydrochlorate and CaCO3One of) mixed solution in, 20~60min is sufficiently stirred, will then obtain mixed liquor and be transferred to 40
It is complete that moisture evaporation is continued stirring until in~90 DEG C of water baths；By the solid after evaporation in 110~180 DEG C sufficiently dry 3~
Uniform powder is ground into after 6h, finally 300~500 DEG C of 1~6h of roasting in Muffle furnace, obtain novel VOCs catalyst.
M element and the ratio between M element and catalyst carrier gross mass are 0.05~0.5 in the metal M salt；A in metal A salt
The molar ratio of M element is 0.05~0.6 in element and metal M salt.And preferred mass ratio is 0.1~0.3.It is preferred that the metal
M element and the ratio between M element and catalyst carrier gross mass are 0.1~0.3 in M salt；Element A and M in metal M salt in metal A salt
The molar ratio of element is 0.1~0.4.
The organic matter is the biological materials such as stalk, corncob.
The present invention also protects the VOCs catalyst for having above-mentioned preparation method to obtain.
The present invention also protects a kind of application of above-mentioned VOCs catalyst, which is applied to degradation volatile organic compound
Object.Follow-on test is carried out to catalyst activity in fixed bed micro counter-chromatography system and on-line checking is carried out to reaction product, is urged
Oxidation temperature is 50~350 DEG C, and catalyst amount is 50~500mg, and VOCs concentration is 50~500ppm, O2Content
It is 5~30%, total gas couette 20-200mL/min；The VOCs representative compound include benzene,toluene,xylene and
O-dichlorohenzene etc..
Compared with prior art, the beneficial effects of the present invention are:
Preparation method of the present invention is using the iron content solid waste of specific composition as primary raw material, and using organic matter as auxiliary agent, through nothing
High temperature pre-processes to obtain catalyst carrier material under oxygen nitrogen atmosphere, then with the novel metal oxide-loaded work of carrier material
Property component and adulterate auxiliary agent prepare can efficient degradation VOCs novel low-cost catalyst.The catalyst utilizes carrier and work
It acts synergistically, realizes to volatile organic compounds generation between strong interaction and active component and auxiliary agent between property component
The efficiently catalyzing and oxidizing of table species benzene,toluene,xylene and o-dichlorohenzene, for VOCs catalytic degradation have it is generally applicable
Property.Wherein, load Mn element adulterates the catalyst of Ce element due to synergistic effect and CeO between the two simultaneously2Outstanding storage
Oxygen ability and oxidation characteristic thus have optimal catalytic activity, and low-temperature catalyzed work well.Experimental comparison it is found that
Ce30Mn15/ TC catalyst (Mn and Mn and the mass ratio of catalyst carrier gross mass be 0.15, Ce/Mn=30mol%) catalysis oxygen
The performance for changing o-dichlorohenzene (o-DCB) is better than business V to a certain extent2O5-WO3/TiO2Catalyst, when such as 300 DEG C,
Ce30Mn15/ TC is 100% to o-DCB conversion ratio, and commercial catalysts V2O5-WO3/TiO2It is only to o-DCB conversion ratio
81.7%.The advantages such as such catalyst has efficient stable, green safe, cost is inexpensive, before possessing wide market application
Scape.
Specific embodiment
To be best understood from the contents of the present invention, below by embodiment, the present invention is further illustrated, but lifts it
Example is not intended to limit protection scope of the present invention.
The step of present invention prepares the preparation method of VOCs catalyst using iron content solid waste, this method is:
1) after with iron content solid waste and the screening of organic matter co-grinding, then 400~650 DEG C of 1~6h of roasting in a nitrogen atmosphere
Obtain catalyst carrier；The quality group of the iron content solid waste becomes SiO2: 35~45%；Fe2O3: 5~15%；TiO2: 1~
8%；MgO:8~15%；Other: 17~51%；It is 1 that the organic matter, which accounts for iron content solid waste and the mass fraction of organic matter total amount,
~5%.
2) wet dip method, using the catalyst carrier of step 1) as carrier material, metal oxide-loaded activity are used
Component, and auxiliary agent is adulterated, metal species are one of Mn, Fe, Ni, Ce and V in the metal oxide active component, are helped
Agent is the nitrate and CaCO of Fe, Co, Ce3One of；Metal species and metal in auxiliary agent in metal oxide active component
Type is different；Prepare the VOCs catalyst of high efficiency, low cost degradation VOCs.
The process of wet dip method is: weighing the catalyst carrier of step 1), disperses catalyst carrier in containing metal M
(A salt refers to the nitre of Fe, Co, Ce as auxiliary element to salt (M refers to one of metal Mn, Fe, Ni, Ce and V) with metal A salt
Hydrochlorate and CaCO3One of) mixed solution in, 20~60min is sufficiently stirred, will then obtain mixed liquor and be transferred to 40
It is complete that moisture evaporation is continued stirring until in~90 DEG C of water baths；By the solid after evaporation in 110~180 DEG C sufficiently dry 3~
Uniform powder is ground into after 6h, finally 300~500 DEG C of 1~6h of roasting in Muffle furnace, obtain novel VOCs catalyst.
In above-mentioned preparation method, step (2) metal M element and the mass ratio of M element and catalyst carrier gross mass are
0.05~0.5, and preferred mass ratio is 0.1~0.3.
In above-mentioned preparation method, the molar ratio of metal element A and M element is 0.05~0.6 in step (2), and is preferably rubbed
You are than being 0.1~0.4.
The organic matter is the biomass such as stalk, corncob.
The present invention also protects a kind of application of novel VOCs catalyst prepared by the above method, the catalyst application
In degradation volatile organic compounds.
When catalyst of the present invention is applied to degradation volatile organic compounds, detailed process is urged using new catalyst
Change oxidation VOCs representative compound (including benzene,toluene,xylene and o-dichlorohenzene etc.), in the micro- trans- chromatography system of fixed bed
System carries out catalyst activity evaluation, and catalytic oxidation temperature is 50~350 DEG C, and catalyst amount is 50~500mg, VOCs
Concentration is 50~500ppm, O2Content is 5~30%, total gas couette 20-200mL/min.
In the present invention, the performance of novel VOCs catalyst oxidation VOCs representative compound, with to VOCs representativeness
The conversion ratio of compound is evaluated.
The present invention is directed to VOCs catalysis oxidation, and prepares catalyst carrier by primary raw material of specific composition iron content solid waste,
Using organic matter as auxiliary agent, high-temperature roasting under anaerobic obtains new carrier material, and oxygen free condition roasting, a small amount of has
Machine matter is carbonized, and is formed more adsorption activity positions, then load active component and auxiliary agent, is passed through carrier, active component and auxiliary agent
Synergistic effect, can prepare efficient degradation VOCs new catalyst.And the catalyst raw material that the application method obtains is cheap, at
This is low, realizes waste utilization, and high catalytic efficiency.
Double roasting has been carried out in the method for the present invention, is once that anaerobic roasting is carried out to iron content solid waste catalyst carrier, one
Secondary is that aerobic roasting is carried out to the catalyst after carried metal, and the temperature of anaerobic roasting is not less than aerobic maturing temperature, makes to be catalyzed
When roasting for second qualitative change will not occur for agent carrier, and influence catalytic activity.
Embodiment 1
(1) catalyst carrier is prepared with iron content solid waste: weighs 200g iron content solid waste (wherein SiO2: 40%；Fe2O3: 11%；
TiO2: 8%；MgO:10%；Other: 31%) and organic matter 6g (corn stover)；Through sieving after the two is crushed with pulverizer
The powder between 180~300 mesh is taken, two kinds of powder are uniformly mixed.Subsequent 500 DEG C of roasting 2h in a nitrogen atmosphere, are catalyzed
Agent carrier is denoted as TC.
(2) catalyst preparation: weighing 1g catalyst carrier and be scattered in the mixed solution containing manganese nitrate and cerous nitrate, wherein
Mn element and Mn element and the mass ratio of catalyst carrier gross mass are 0.15, and metal Ce element and the molar ratio of Mn element are
0.3.30min is sufficiently stirred, will then obtain mixed liquor and be transferred in 90 DEG C of water baths that continue stirring until moisture evaporation complete.
Solid after evaporation is ground into uniform powder after 130 DEG C of sufficiently dry 5h, finally 450 DEG C of roasting 2h in Muffle furnace, obtain
Ce is denoted as to novel VOCs catalyst30Mn15/TC。
(3) experimentation of catalysis oxidation o-dichlorohenzene (o-DCB)
Loading catalyst: by 100mg Catalyst packing in stainless steel catalytic bed (internal diameter: 5mm), catalyst two
End filling pinner English cotton pad layer.
Catalytic reaction condition: total gas couette: 60mL/min, o-DCB concentration: 50ppm, O2Content: 10%, reaction temperature
50~350 DEG C of degree.
Ce30Mn15/ TC catalyst aoxidizes the performance of o-DCB, is evaluated, be the results are shown in Table with the conversion ratio to o-DCB
1。
Table 1-1 Ce30Mn15The efficiency of/TC catalyst oxidation o-DCB
The novel VOCs catalyst Ce prepared to illustrate the invention30Mn15The performance advantage of/TC catalysis oxidation VOCs, takes
100 mg commercial catalysts V2O5-WO3/TiO2Catalysis oxidation o-DCB performance evaluation is carried out, specific reaction condition is identical as (3),
It the results are shown in Table 1-2.
Table 1-2 commercial catalysts V2O5-WO3/TiO2The efficiency of catalysis oxidation o-DCB
Embodiment 2
(1) catalyst carrier is prepared with iron content solid waste: weighs 250g iron content solid waste (wherein SiO2: 37%；Fe2O3: 9%；
TiO2: 5%；MgO:12%；Other: 37%) and organic matter 7.5g (corncob) are, through sieving after the two is crushed with pulverizer
The powder between 180~250 mesh is taken, then 450 DEG C of roasting 2h in a nitrogen atmosphere, obtains catalyst carrier, be denoted as TC.
(2) it catalyst preparation: weighs 1g catalyst carrier and is scattered in and (helped containing cerous nitrate (active component) with cobalt nitrate
Agent) mixed solution, wherein Ce element and Ce element and the mass ratio of catalyst carrier gross mass are 0.15, metal Co element
Molar ratio with Ce element is 0.45.30min is sufficiently stirred, will then obtain mixed liquor and be transferred in 80 DEG C of water baths to hold
Continuous stirring is complete to moisture evaporation.The solid being evaporated is ground into uniform powder after 130 DEG C of sufficiently dry 5h, finally in
350 DEG C of roasting 2h in Muffle furnace, obtain novel VOCs catalyst and are denoted as Co45Ce15/TC。
(3) experimentation of catalysis oxidation benzene
Loading catalyst: by 100mg Catalyst packing in stainless steel catalytic bed (internal diameter: 5mm), catalyst two
End filling pinner English cotton pad layer.
Catalytic reaction condition: total gas couette: 60mL/min, benzene concentration: 200ppm, O2Content: 10%, reaction temperature
50~350 DEG C.
Co45Ce15The performance of/TC catalyst Oxybenzene, is evaluated with the conversion ratio to benzene, the results are shown in Table 2.
2 Co of table45Ce15The efficiency of/TC catalyst Oxybenzene
Embodiment 3
(1) catalyst carrier is prepared with iron content solid waste: weighs 200g iron content solid waste (wherein SiO2: 32%；Fe2O3: 6%；
TiO2: 5%；MgO:4%；Other: 53%) with organic matter 8g (corncob), taking after the two is crushed with pulverizer through screening
Powder between 180~300 mesh.Subsequent 400 DEG C of roasting 3h in a nitrogen atmosphere, obtain catalyst carrier, are denoted as TC.
(2) catalyst preparation: weighing 1g support dispersion in the mixed solution containing nickel nitrate and cerous nitrate, wherein Ni element
It is 0.15 with Ni element and the mass ratio of catalyst carrier gross mass, the molar ratio of metal Ce element and Ni element is 0.15.It fills
Point stirring 60min will then obtain mixed liquor and be transferred in 90 DEG C of water baths that continue stirring until moisture evaporation complete.It will steam
The solid distributed is ground into uniform powder after 130 DEG C of sufficiently dry 5h, finally 400 DEG C of roasting 3h in Muffle furnace, obtains new
Type VOCs catalyst is denoted as Ce15Ni15/TC。
(3) experimentation of catalysis oxidation toluene
Loading catalyst: by 50mg Catalyst packing in stainless steel catalytic bed (internal diameter: 5mm), catalyst both ends
Load pinner English cotton pad layer.
Catalytic reaction condition: total gas couette: 100mL/min, toluene concentration: 50ppm, O2Content: 5%, reaction temperature
50~350 DEG C.
Ce15Ni15/ TC catalyst aoxidizes the performance of toluene, is evaluated with the conversion ratio to toluene, the results are shown in Table 3.
3 Ce of table15Ni15The efficiency of/TC catalyst oxidation toluene
Embodiment 4
(1) catalyst carrier is prepared with iron content solid waste: weighs 200g iron content solid waste (wherein SiO2: 44%；Fe2O3: 13%；
TiO2: 3%；MgO:9%；Other: 31%) with organic matter 2.5g (cotton stalk), taking 180 through screening after being crushed with pulverizer
Powder between~300 mesh, then 600 DEG C of roasting 2h in a nitrogen atmosphere, obtain catalyst carrier, are denoted as TC.
(2) catalyst preparation: 1g support dispersion is weighed in the mixed solution containing ammonium metavanadate and ferric nitrate, wherein V is first
Element is 0.15 with V element and the mass ratio of catalyst carrier gross mass, and the molar ratio of metal Fe element and V element is 0.3.It fills
Point stirring 30min will then obtain mixed liquor and be transferred in 60 DEG C of water baths that continue stirring until moisture evaporation complete.It will steam
The solid distributed is ground into uniform powder after 180 DEG C of sufficiently dry 3h, finally 450 DEG C of roasting 2h in Muffle furnace, obtains new
Type VOCs catalyst is denoted as Fe30V15/TC。
(3) experimentation of catalysis oxidation dimethylbenzene
Loading catalyst: by 200mg Catalyst packing in stainless steel catalytic bed (internal diameter: 5mm), catalyst two
End filling pinner English cotton pad layer.
Catalytic reaction condition: total gas couette: 60mL/min, toluene concentration: 50ppm, O2Content: 10%, reaction temperature
50~350 DEG C.
Fe30V15The performance of/TC catalyst cacodyl oxide benzene, is evaluated with the conversion ratio of paraxylene, be the results are shown in Table
4。
4 Fe of table30V15The efficiency of/TC catalyst cacodyl oxide benzene
Embodiment 5
(1) catalyst carrier is prepared with iron content solid waste: weighs 200g iron content solid waste (wherein SiO2: 38%；Fe2O3: 7%；
TiO2: 5%；MgO:11%；Other: 39%) organic matter 6g (cotton stalk), 180 are taken through screening after being crushed with pulverizer~
Powder between 300 mesh.Subsequent 600 DEG C of roasting 2h in a nitrogen atmosphere, obtain catalyst carrier, are denoted as TC.
(2) catalyst preparation: weighing 1g support dispersion in the mixed solution containing ferric nitrate and cerous nitrate, wherein Fe element
It is 0.20 with Fe element and the mass ratio of catalyst carrier gross mass, the molar ratio of metal Ce element and Fe element is 0.3.It fills
Point stirring 40min will then obtain mixed liquor and be transferred in 90 DEG C of water baths that continue stirring until moisture evaporation complete.It will steam
Solid after hair is ground into uniform powder after 110 DEG C of sufficiently dry 6h, and finally 450 DEG C of roasting 2h in Muffle furnace, obtain new
Type VOCs catalyst is denoted as Ce30Fe20/TC。
(3) experimentation of catalysis oxidation o-dichlorohenzene (o-DCB)
Loading catalyst: by 200mg Catalyst packing in stainless steel catalytic bed (internal diameter: 5mm), catalyst two
End filling pinner English cotton pad layer.
Catalytic reaction condition: total gas couette: 60mL/min, toluene concentration: 50ppm, O2Content: 20%, reaction temperature
50~350 DEG C.
Ce30Fe20/ TC catalyst aoxidizes the performance of o-DCB, is evaluated, be the results are shown in Table with the conversion ratio to o-DCB
5。
5 Ce of table30Fe20The efficiency of/TC catalyst oxidation o-DCB
Embodiment 6
(1) catalyst carrier is prepared with iron content solid waste: weighs 200g iron content solid waste (wherein SiO2: 40%；Fe2O3: 7%；
TiO2: 8%；MgO:15%；Other: 30%) with organic matter 8.5g (corn stover), taking 180 through screening after being crushed with pulverizer
Powder between~300 mesh.Subsequent 550 DEG C of roasting 4h in a nitrogen atmosphere, obtain catalyst carrier, are denoted as TC.
(2) catalyst preparation: weighing 1g support dispersion in the mixed solution containing manganese nitrate and calcium carbonate, wherein Mn element
It is 0.10 with Mn element and the mass ratio of solid waste gross mass, the molar ratio of metal Ca element and Mn element is 0.3.It is sufficiently stirred
30min will then obtain mixed liquor and be transferred in 90 DEG C of water baths that continue stirring until moisture evaporation complete.By lower layer's solid
It is ground into uniform powder after 130 DEG C of sufficiently dry 5h, finally 500 DEG C of roasting 2h in Muffle furnace, obtains novel VOCs catalysis
Agent is denoted as Ca30Mn10/TC。
(3) experimentation of catalysis oxidation o-dichlorohenzene (o-DCB)
Loading catalyst: by 100mg Catalyst packing in stainless steel catalytic bed (internal diameter: 5mm), catalyst two
End filling pinner English cotton pad layer.
Catalytic reaction condition: total gas couette: 60mL/min, toluene concentration: 50ppm, O2Content: 10%, reaction temperature
50~350 DEG C.
Ca30Mn10/ TC catalyst aoxidizes the performance of o-DCB, is evaluated, be the results are shown in Table with the conversion ratio to o-DCB
6。
6 Ca of table30Mn10The efficiency of/TC catalyst oxidation o-DCB
The present invention does not address place and is suitable for the prior art.
Claims (8)
1. a kind of the step of preparation method for preparing VOCs catalyst using iron content solid waste, this method, is:
1) after with iron content solid waste and the screening of organic matter co-grinding, then 400~650 DEG C of 1~6h of roasting are obtained in a nitrogen atmosphere
Catalyst carrier；The quality group of the iron content solid waste becomes SiO2: 35~45%；Fe2O3: 5~15%；TiO2: 1~8%；
MgO:8~15%；Other: 17~51%；It is 1~5% that the organic matter, which accounts for iron content solid waste and the mass fraction of organic matter total amount,；
2) wet dip method is used, using the catalyst carrier of step 1) as carrier material, metal oxide-loaded active component,
And auxiliary agent is adulterated, metal species are one of Mn, Fe, Ni, Ce and V in the metal oxide active component, auxiliary agent Fe,
The nitrate and CaCO of Co, Ce3One of；Metal species are not in metal species and auxiliary agent in metal oxide active component
Together；Prepare the VOCs catalyst of high efficiency, low cost degradation VOCs.
2. preparation method according to claim 1, which is characterized in that grinding screen after the iron content solid waste and organic matter mixing
Partial size after point is between 180~300 mesh.
3. preparation method according to claim 1, which is characterized in that the process of wet dip method is: weighing step 1)
Catalyst carrier disperses catalyst carrier in containing metal M salt (M refers to one of metal Mn, Fe, Ni, Ce and V) and metal
(A salt refers to the nitrate and CaCO of Fe, Co, Ce as auxiliary element to A salt3One of) mixed solution in, be sufficiently stirred
20~60min will then obtain mixed liquor and be transferred in 40~90 DEG C of water baths that continue stirring until moisture evaporation complete；It will steam
Solid after hair is ground into uniform powder after 110~180 DEG C of sufficiently dry 3~6h, finally 300~500 DEG C in Muffle furnace
1~6h is roasted, novel VOCs catalyst is obtained.
4. preparation method according to claim 3, which is characterized in that M element and M element and catalysis in the metal M salt
The ratio between agent carrier gross mass is 0.05~0.5；In metal A salt in element A and metal M salt the molar ratio of M element be 0.05~
0.6.And preferred mass ratio is 0.1~0.3.
5. preparation method according to claim 3, which is characterized in that M element and M element and catalysis in the metal M salt
The ratio between agent carrier gross mass is 0.1~0.3；The molar ratio of element A and M element in metal M salt is 0.1~0.4 in metal A salt.
6. preparation method according to claim 1, which is characterized in that the organic matter is stalk, corncob.
7. a kind of VOCs catalyst, which is characterized in that the catalyst is obtained using any preparation method of claim 1-6
.
8. a kind of application of VOCs catalyst, it is characterised in that: utilize the VOCs catalyst as claimed in claim 1 to 7
VOCs representative compound is aoxidized, follow-on test is carried out to catalyst activity in fixed bed micro counter-chromatography system and reaction is produced
Object carries out on-line checking, and catalytic oxidation temperature is 50~350 DEG C, and catalyst amount is 50~500mg, and VOCs concentration is 50
~500ppm, O2Content is 5~30%, total gas couette 20-200mL/min；The VOCs representative compound include benzene,
Toluene, dimethylbenzene or o-dichlorohenzene.
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