CN107597105A - A kind of waste gas purification catalysis material and preparation method thereof - Google Patents
A kind of waste gas purification catalysis material and preparation method thereof Download PDFInfo
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Abstract
The present invention provides a kind of waste gas purification catalysis material and preparation method thereof, is related to environmental technology field.The material includes 10 50 parts of the catalyst counted in parts by weight and 500 1200 parts of the carrier for carrying catalyst.Carrier forms multilayer carrier layer, the Catalytic Layer that catalyst filling is formed between adjacent carrier layer.Catalyst includes metal or metal oxide.Metal includes the one or more in platinum, palladium, iridium, gold, silver.Metal oxide includes the one or more in cupric oxide, zinc oxide, nickel oxide, cobalt oxide, manganese oxide.Carrier includes the one or more in aluminum oxide, nickel oxide, cerium oxide, lanthana, zirconium oxide.The gap naturally occurred between catalyst granules is narrow, tortuous, is advantageous to improve the residence time of waste gas in the channel, improves the purifying rate of waste gas.Meanwhile carrier can effectively promote catalyst, accelerate catalytic efficiency, improve waste gas purification speed.
Description
Technical field
The present invention relates to environmental technology field, in particular to a kind of waste gas purification catalysis material and its preparation side
Method.
Background technology
Waste gas is one of important sources of atmosphere pollution, and it is poisonous and harmful to refer to that the mankind discharge in production and life process
Gas.Particularly chemical plant, steel plant, pharmaceutical factory, and coking plant and oil plant etc., the exhaust gas smell of discharge is big, seriously
Pollute environment and influence health.The industrial waste gas of all kinds of manufacturing enterprise's discharges is the important sources of atmosphere pollution.Largely
If industrial waste gas it is unprocessed it is up to standard after be discharged into air, necessarily decline atmosphere quality, come to human body health care belt serious
Harm, brings about great losses to national economy.Poisonous and harmful substance can enter human body by respiratory tract and skin in industrial waste gas
Afterwards, long-term low concentration or the contact of short-term high concentration can cause the systems such as the breathing of human body, blood, liver and organ temporary and forever
Long venereal disease becomes, and especially benzopyrenes polycyclic aromatic hydrocarbon can make human body directly carcinogenic to cause the great attention of the mankind.
Industrial waste gas includes organic exhaust gas and inorganic waste gases.Organic exhaust gas mainly includes various hydro carbons, alcohols, aldehydes, acid
Class, ketone and amine etc.；Inorganic waste gases mainly include oxysulfide, nitrogen oxides, oxycarbide, halogen and its compound etc..
China takes pollutant emission control system for atmosphere pollution.Organic exhaust gas is one of main atmosphere pollution, can be passed through
Respiratory tract and skin enter the system such as human body, the breathing given people, blood, liver and organ causes temporary and permanent lesion.
As PTA oxidized tail gas contains substantial amounts of pernicious gas, such as：Formaldehyde, benzene,toluene,xylene, methyl acetate, CO etc., its index are equal
More than discharging standards, environment is caused to seriously endanger.To prevent from polluting, used except reducing oil loss, reducing organic solvent
Amount is outer to reduce the generation of organic exhaust gas and discharge, and exhaust gas purification is current practicable governance way.
The content of the invention
It is an object of the invention to provide a kind of waste gas purification catalysis material, its can improve exhaust treatment efficiency and
Waste gas purification rate.
Another object of the present invention is to provide a kind of preparation method of waste gas purification catalysis material, this method is easy easily
OK, it is adapted to a large amount of productions.
The present invention is solved its technical problem and realized using following technical scheme.
The present invention proposes a kind of waste gas purification catalysis material.It include catalyst 10-50 parts for counting in parts by weight with
And for carrying carrier 500-1200 parts of catalyst.Carrier forms multilayer carrier layer, catalyst filling between adjacent carrier layer
The Catalytic Layer of formation.Catalyst includes metal or metal oxide.Metal includes the one or more in platinum, palladium, iridium, gold, silver.
Metal oxide includes the one or more in cupric oxide, zinc oxide, nickel oxide, cobalt oxide, manganese oxide.Carrier includes oxidation
One or more in aluminium, nickel oxide, cerium oxide, lanthana, zirconium oxide.
The present invention proposes a kind of preparation method of above-mentioned waste gas purification catalysis material.Including catalyst is laid on into the first load
Calcined to obtain the first composite bed on body layer and at 500-700 DEG C.Second support is placed on the first composite bed simultaneously again
Calcined to obtain the second composite bed at 300-500 DEG C.Wherein, catalyst be located at first vector layer and Second support layer it
Between.First vector layer and Second support layer calcine formation by carrier at 200-300 DEG C.
The waste gas purification of the embodiment of the present invention is with the beneficial effect of catalysis material and preparation method thereof：
The embodiments of the invention provide a kind of waste gas purification catalysis material, the main catalyst for including counting in parts by weight
10-50 parts and carrier 500-1200 parts for carrying catalyst.Carrier is segmented into more parts to form multilayer carrier respectively
Layer, the Catalytic Layer that catalyst filling is formed between adjacent carrier layer.Catalytic Layer connects two adjacent carrier layers, is urging
Gap between numerous catalyst granules on change layer be present, the passage formed for waste gas disengaging is connected between gap.Waste gas is from logical
In road by, and fully contacted with catalyst during by passage, when waste gas again from passage out when, it is complete
Into the purification of waste gas.The gap naturally occurred between catalyst granules is narrow, tortuous, is advantageous to improve waste gas in the channel
Residence time, improve the purifying rate of waste gas.Meanwhile carrier is from aluminum oxide, nickel oxide, cerium oxide, lanthana, zirconium oxide
One or more, catalyst can be effectively promoted, accelerate catalytic efficiency, improve waste gas purification speed.
The embodiment of the present invention also provides a kind of preparation method of above-mentioned waste gas purification catalysis material, by by catalyst and
First vector layer is calcined, and is strengthened the adhesive force of catalyst and first vector layer, is prevented catalyst on first vector layer
Sliding.In addition, also Second support is placed in the Catalytic Layer on first vector layer, and calcined again, on the one hand to
Two carrier layers are fixed, and on the other hand strengthen the stability of catalyst granules, are advantageous to catalyst capture waste gas, improve waste gas
Handling rate.Two carrier layers are spaced apart by catalyst between first vector layer and Second support layer, using catalyst granules
Come, while exhaust steam passage is formed using the gap between catalyst granules, eliminate the trouble that porous material is manufactured separately.First
Carrier layer and Second support layer calcine formation by carrier at 200-300 DEG C.First two carrier layers are entered at a lower temperature
Row calcining, makes two carrier layers first carry out pre-crystallized, and two carrier layers are entered using higher temperature again after later stage addition catalyst
Row secondary crystallization.During secondary crystallization, catalyst can be inserted partially into the lattice of carrier granular, with improve catalyst with
The connective stability of two carrier layers.
Embodiment
, below will be in the embodiment of the present invention to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer
Technical scheme be clearly and completely described.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, it is the conventional production that can be obtained by commercially available purchase
Product.
Waste gas purification catalysis material provided in an embodiment of the present invention and preparation method thereof is specifically described below.
The embodiment of the present invention provides a kind of waste gas purification catalysis material.It includes the catalyst 10- counted in parts by weight
50 parts and for carrying carrier 500-1200 parts of catalyst.Carrier forms multilayer carrier layer, is filled between adjacent carrier layer
The Catalytic Layer that catalyst is formed.Catalyst includes metal or metal oxide.Metal includes one kind in platinum, palladium, iridium, gold, silver
It is or a variety of.Metal oxide includes the one or more in cupric oxide, zinc oxide, nickel oxide, cobalt oxide, manganese oxide.Carrier bag
Include the one or more in aluminum oxide, nickel oxide, cerium oxide, lanthana, zirconium oxide.
Carrier is segmented into more parts to form multilayer carrier layer respectively, and what catalyst filling was formed between adjacent carrier layer urges
Change layer, can finally form waste gas purification catalysis material.The Catalytic Layer that catalyst is formed connects two adjacent carrier layers
Get up, gap between numerous catalyst granules in Catalytic Layer be present, the passage formed for waste gas disengaging is connected between gap.
Waste gas from passage by, and fully contacted with catalyst during by passage, when waste gas again from passage out
When, have been completed the purification of waste gas.The gap naturally occurred between catalyst granules is narrow, tortuous, is advantageous to improve waste gas
Residence time in the channel, improve the purifying rate of waste gas.Meanwhile carrier from aluminum oxide, nickel oxide, cerium oxide, lanthana,
One or more in zirconium oxide, catalyst can be effectively promoted, accelerate catalytic efficiency, improve waste gas purification speed.
Waste gas purification is fitted into waste gas reaction device with catalysis material, you can realize the purification of waste gas.Catalyst is first to useless
Gas is adsorbed, and improves the concentration of reactant.Then catalytic oxidation stage reduces the activation energy of reaction, improves reaction rate.Borrow
Co-catalyst can be such that organic exhaust gas (organic exhaust gas is typically handled using catalysis burning or charcoal absorption) is risen in relatively low
At a temperature of combustion, anoxycausis occurs, resolves into CO2And H2O, so as to reach the purpose of exhaust-gas treatment.Platinum, palladium, iridium, gold, silver etc. are expensive
Metallic catalyst, it is that most ripe, commercial Application is widest, active height, the characteristics of selectivity is good.Cupric oxide, zinc oxide,
The non-noble metal oxide such as nickel oxide, cobalt oxide, manganese oxide has that cost is low, prepares the characteristics of simple as catalyst, at present
There is higher activity for some specific pollutants.
Further, waste gas purification includes the catalyst 20-40 parts counted in parts by weight and carrier with catalysis material
700-1000 parts.The relative amount of appropriate regulation catalyst and carrier, is advantageous to further improve at the waste gas of the catalysis material
Reason ability.
Further, the area ratio of the area of Catalytic Layer and adjacent carrier layer is 1-2：20-100.Control Catalytic Layer
Area is smaller, is easy to reserve exhaust gas flow path.For the ease of calculating, the area of Catalytic Layer is to be catalyzed in the embodiment of the present invention
What particle was calculated under collected state, therefore Catalytic Layer area is smaller.But in preparation process, catalyst granules is really
Scattered state, preferable exhaust gas flow path can be formed under this kind of state.
Further, the area ratio of the area of Catalytic Layer and adjacent carrier layer is 1-2：40-60.Further regulation and control catalysis
The relative area of layer and carrier layer, can further regulate and control quantity, shape, size of exhaust gas flow path etc., to reach pair
The more preferable treatment effect of waste gas.
The present invention also proposes a kind of preparation method of above-mentioned waste gas purification catalysis material.Mainly include the following steps that：
According to real needs, the carrier layer number of plies of waste gas purification catalysis material needs is designed in advance and is catalyzed layer by layer
Number.Carrier material is weighed according to aforementioned ratio again, and carried out according to the good carrier material of required carrier layer number of plies weighing
Respectively.Equally, symmetrical measured catalyst is also divided equally.It is for per a carrier and every in preparation process as described below
For a catalyst.
Carrier is carried out at 200-300 DEG C to calcine obtained carrier layer, enable carrier during pre-crystallized substantially into
Type.At this temperature, it can make still to keep certain gap between carrier material, be easy to inserting for catalyst granules in subsequent process
Enter.
Configure the first dispersion liquid.Catalyst is scattered in solution, and ultrasonic disperse 3-5 hours obtain the first dispersion liquid.
First dispersion liquid includes the solution 50-100 part and catalyst 10-15 parts counted in parts by weight.Solution includes water, ethanol, third
One or more in ketone.Can be by controlling concentration of the catalyst in the first dispersion liquid to reach the mesh of control Catalytic Layer area
's.Ultrasonic disperse can improve the dispersing uniformity of catalyst in the solution, so as to control catalyst granules in two carrier layers
On distribution.The distribution of catalyst granules on a carrier layer is more uniform, is more advantageous to improve the degree of purification of waste gas.Meanwhile urge
Fully dispersed, the catalytic performance decline caused by can also avoiding catalyst granules aggregation of agent.
First vector layer is immersed in the first dispersion liquid, soak time is 4-7 hours.It is scattered that first vector is dipped into first
After in liquid, according to heterogeneous nucleation mechanism, catalyst granules constantly will be attracted to first vector surface, when being soaked by controlling
Between, catalyst granules can be controlled in the abundance on first vector surface.Foregoing ultrasonic disperse, be advantageous to improve catalyst particles
Absorption uniformity of the grain on first vector surface.
The first vector with catalyst obtained by above-mentioned steps is calcined to obtain the at 500-700 DEG C again
One composite bed.In the calcination process of the temperature, carrier material carries out secondary crystallization, improves the compactness of carrier material.The process
In, because carrier material leaves gap in pre-crystallized so that catalyst granules can be inserted partially into the gap or even insert
Enter into the lattice of carrier material, strengthen the connective stability of catalyst granules and carrier material, improve catalyst to waste gas
Capturing ability.
Configure the second dispersion liquid.Catalyst is scattered in solution, and ultrasonic disperse 3-5 hours obtain the second dispersion liquid.
Second dispersion liquid includes the solution 50-100 part and catalyst 3-8 parts counted in parts by weight.Solution includes water, ethanol, acetone
In one or more.In second dispersion liquid, the concentration of catalyst is different from the concentration of catalyst in the first dispersion liquid, after being easy to
It is continuous to better control over exhaust-gas treatment passage.
Second support layer is immersed in the second dispersion liquid again, taken out Second support after soaking 1-3 hours, and dry in the air naturally
It is dry.It can be adjusted in soak time according to Spreading requirements of the required catalyst granules on Second support layer.It is to be appreciated that
The Second support layer used in the present invention is intended merely to be used to distinguish the carrier number of plies used in the waste gas purification catalysis material,
Second support layer and first vector layer are that carrier is carried out at 200-300 DEG C to calcine obtained carrier layer.After naturally dry
Second support layer is calcined again, evaporation of the solution in high-temperature burning process can be avoided to make the structure of Second support layer
Into destruction, waste gas may be caused to be lost from Second support laminar flow, so as to reduce waste gas purification degree.Certainly, foregoing first vector
It can also first dry after layer adsorption catalyst and be calcined again.
The Second support layer obtained by above-mentioned steps is calcined to obtain the second composite bed at 500-700 DEG C.
Compound it be placed on the first composite bed by second again and calcined to obtain triplex layer at 300-500 DEG C.
Wherein, two Catalytic Layers formed in aforementioned process are respectively positioned between first vector layer and Second support layer.Due to foregoing first
Catalyst concn in dispersion liquid and the second dispersion liquid is different so that catalyst granules is on first vector layer and Second support layer
Distributed architecture it is different, therefore, when two Catalytic Layers are combined, more tortuous, the more diversified waste gas of shape can be formed
Passage, be advantageous to improve waste gas purification degree.
Triplex layer can be used as waste gas purification and be used with catalysis material.When need carrier the number of plies it is more when, according to
Each carrier layer is overlapped by aforesaid way.
The feature and performance of the present invention are described in further detail with reference to embodiments.
Embodiment 1
The present embodiment provides a kind of waste gas purification catalysis material and preparation method thereof, specific as follows：
Weigh catalyst 10g, carrier 500g.Wherein catalyst is platinum, and carrier is aluminum oxide.And 500g points are by carrier
2 parts, every part of 250g.
Calcining is carried out to every part of carrier at 200 DEG C 2 carrier layers are made, number consecutively is that first vector layer and second carry
Body layer, it is standby.
Catalyst is laid on first vector layer and is calcined to obtain the first composite bed at 500 DEG C, then second is carried
Body is placed on the first composite bed and is calcined to obtain the second composite bed at 300 DEG C.Second composite bed is waste gas purification
Use catalysis material.
In the waste gas purification catalysis material being eventually fabricated, altogether including 2 carrier layers, between 2 carrier layers to urge
The area ratio of change layer, the area of Catalytic Layer and 2 carrier layers is 1:20.
Embodiment 2
The present embodiment provides a kind of waste gas purification catalysis material and preparation method thereof, specific as follows：
Weigh catalyst 50g, carrier 12 00g.Wherein catalyst is nickel oxide, and carrier is nickel oxide 600g and cerium oxide
600g mixture.By carrier 12,00g points are 5 parts, every part of 240g.Catalyst is divided into 4 parts, every part of 12.5g.
Calcining is carried out to every part of carrier at 300 DEG C 5 carrier layers are made, number consecutively carries for first vector layer to the 5th
Body layer, it is standby.
The first dispersion liquid is configured to the 4th dispersion liquid.Every part of catalyst is scattered in every part of aqueous solution (62.5g), and surpassed
Sound obtains the first dispersion liquid to the 4th dispersion liquid in scattered 3 hours.The side of adsorption catalyst is needed to be immersed on first vector layer
In one dispersion liquid, soak time is 4 hours.
Again the first vector with catalyst obtained by above-mentioned steps is calcined to obtain first at 700 DEG C and answered
Close layer.Second support layer is directly covered in the Catalytic Layer of the first composite bed, and calcined at 500 DEG C again, it is multiple to obtain second
Close layer.
The side of adsorption catalyst is needed to be immersed in the second dispersion liquid the 3rd carrier layer, immersion carries after 4 hours by second
Body takes out, and naturally dry.The 3rd carrier layer is calcined at 600 DEG C again to obtain triplex layer.By triplex layer
On catalysis be placed on Second support layer, and calcined at 400 DEG C, obtain the 4th composite bed.
4th carrier layer and the 5th carrier layer are handled according to the processing mode of the 3rd carrier layer, last obtained waste gas
In purification catalysis material, altogether including 5 carrier layers, 4 Catalytic Layers.One is used in conjunction between adjacent 2 carrier layers to urge
Change layer, the area of each Catalytic Layer and the area ratio of adjacent carrier layer are 1:100.
Embodiment 3
The present embodiment provides a kind of waste gas purification catalysis material and preparation method thereof, specific as follows：
Weigh catalyst 20g, carrier 700g.Wherein catalyst is palladium 10g and iridium 10g mixture, and carrier is cerium oxide
200g, lanthana 200g and zirconium oxide 300g mixture.By carrier, 700g points are 4 parts, every part of 175g.Catalyst is divided into
3 parts, every part of 6.66g.
Calcining is carried out to every part of carrier at 250 DEG C 4 carrier layers are made, number consecutively carries for first vector layer to the 4th
Body layer, it is standby.
The first dispersion liquid is configured to the 3rd dispersion liquid.By every part of catalyst be scattered in respectively the first acetone soln (44.4g),
In second acetone soln (133.2g), tri acetylacetonate solution (83.25g), and ultrasonic disperse obtains the first dispersion liquid for 4 hours to
Three dispersion liquids.
The side of adsorption catalyst is needed to be immersed in the first dispersion liquid on first vector layer, soak time is 6 hours.Immersion
Afterwards, naturally dry is taken out.
Again the first vector with catalyst obtained by above-mentioned steps is calcined to obtain first at 650 DEG C and answered
Close layer.
Second support layer is totally submerged in the second dispersion liquid (i.e. will all there be catalyst Second support both sides), immersion 3 is small
When after Second support is taken out, and naturally dry.Second support layer is calcined at 400 DEG C again to obtain the second composite bed.
Catalysis on second composite bed is placed in the Catalytic Layer on the first composite bed, and calcined at 400 DEG C, obtains triplex
Layer.
The side of adsorption catalyst is needed to be immersed in the 3rd dispersion liquid the 3rd carrier layer, immersion carries after 7 hours by the 3rd
Body takes out, and naturally dry.The 3rd carrier layer is calcined at 500 DEG C again to obtain the 4th composite bed.By the 4th composite bed
The one of upper no Catalytic Layer is placed in the Catalytic Layer on triplex layer, and is calcined at 300 DEG C, obtains the 5th composite bed.
The side of adsorption catalyst is needed to be immersed in the second dispersion liquid the 4th carrier layer, immersion carries after 2 hours by the 4th
Body takes out, and naturally dry.The 4th carrier layer is calcined at 600 DEG C again to obtain the 6th composite bed.By the 6th composite bed
On catalysis be placed in the Catalytic Layer on the 5th composite bed, and calcined at 300 DEG C, obtain the 7th composite bed.
7th composite bed is the waste gas purification catalysis material being eventually fabricated, altogether including 4 carrier layers, 3 catalysis
Layer.A Catalytic Layer is used in conjunction between adjacent 2 carrier layers.Catalytic Layer and phase between first vector layer and Second support layer
The area ratio of adjacent carrier layer is 2：20；Catalytic Layer and the area ratio of adjacent carrier layer between Second support layer and the 3rd carrier layer
For 2：90；The area ratio of Catalytic Layer and adjacent carrier layer between 3rd carrier layer and the 4th carrier layer is 2：70.
Embodiment 4
The present embodiment provides a kind of waste gas purification catalysis material and preparation method thereof, specific as follows：
Weigh catalyst 40g, carrier 1000g.Wherein catalyst is golden 10g, silver-colored 20g and iridium 10g mixture, and carrier is
Aluminum oxide 200g, nickel oxide 200g, cerium oxide 300g, lanthana 300g mixture.By carrier, 1000g points are 8 parts, every part
125g.Catalyst is divided into 7 parts, every part of 5.71g.
Calcining is carried out to every part of carrier at 280 DEG C 8 carrier layers are made, number consecutively carries for first vector layer to the 8th
Body layer, it is standby.
The first dispersion liquid is configured to the 7th dispersion liquid.By every part of catalyst be scattered in every part of mixed solution (including water 25g and
Ethanol 11.7g) in, and ultrasonic disperse obtains the first dispersion liquid for 3.5 hours to the 7th dispersion liquid.First vector layer is needed to adsorb
The side of catalyst is immersed in the first dispersion liquid, and soak time is 5 hours.
Again the first vector with catalyst obtained by above-mentioned steps is calcined to obtain first at 700 DEG C and answered
Close layer.Second support layer is directly covered in the Catalytic Layer of the first composite bed, and calcined at 500 DEG C again, it is multiple to obtain second
Close layer.
The side of adsorption catalyst is needed to be immersed in the second dispersion liquid the 3rd carrier layer, immersion carries after 4 hours by second
Body takes out, and naturally dry.The 3rd carrier layer is calcined at 600 DEG C again to obtain triplex layer.By triplex layer
On catalysis be placed on Second support layer, and calcined at 400 DEG C, obtain the 4th composite bed.
4th carrier layer to the 8th carrier layer is handled successively according to the processing mode of the 3rd carrier layer, last obtained
In waste gas purification catalysis material, altogether including 8 carrier layers, 7 Catalytic Layers.One is used in conjunction between adjacent 2 carrier layers
Individual Catalytic Layer, the area of each Catalytic Layer and the area ratio of adjacent carrier layer are 2:100.
Embodiment 5
The present embodiment provides a kind of waste gas purification catalysis material and preparation method thereof, specific as follows：
Weigh catalyst 15g, carrier 900g.Wherein catalyst is golden 5g, silver-colored 3g, palladium 4g and iridium 3g mixture, carrier
For aluminum oxide 100g, nickel oxide 200g, cerium oxide 250g, lanthana 250g and zirconium oxide 100g mixture.By carrier
900g points are 3 parts, every part of 300g.Catalyst is divided into 2 parts, every part of 7.5g.
Calcining is carried out to every part of carrier at 210 DEG C 3 carrier layers are made, number consecutively carries for first vector layer to the 3rd
Body layer, it is standby.
Configure the first dispersion liquid and the second dispersion liquid.Every part of catalyst is scattered in the first ethanol solution (50g), respectively
In diethyl alcoholic solution (125), and ultrasonic disperse obtains the first dispersion liquid and the second dispersion liquid in 5 hours.
The side of adsorption catalyst is needed to be immersed in the first dispersion liquid on first vector layer, soak time is 7 hours.Again will
The first vector with catalyst obtained by above-mentioned steps is calcined to obtain the first composite bed at 600 DEG C.
The side of adsorption catalyst is needed to be immersed in the second dispersion liquid on Second support layer, immersion carries after 1 hour by second
Body takes out, and
Naturally dry.Second support layer is calcined at 500 DEG C again to obtain the second composite bed.By on the second composite bed
Catalysis be placed in the Catalytic Layer of the first composite bed, and calcined at 300 DEG C, obtain triplex layer.
3rd carrier layer needs the side of adsorption catalyst to be immersed in the second dispersion liquid, by the 3rd carrier after soaking 6 hours
Take out, and naturally dry.The 3rd carrier layer is calcined at 700 DEG C again to obtain the 4th composite bed.By on the 4th composite bed
Catalysis be placed on the side of no Catalytic Layer on Second support layer, and calcining obtains the 5th composite bed at 500 DEG C.
5th composite bed is the waste gas purification catalysis material being eventually fabricated, and it includes 3 carrier layers altogether, and 2 are urged
Change layer.A Catalytic Layer is used in conjunction between adjacent 2 carrier layers.Catalytic Layer between first vector layer and Second support layer
The area ratio of area and adjacent carrier layer is 1：40；The area of Catalytic Layer between Second support layer and the 3rd carrier layer with it is adjacent
The area ratio of carrier layer is 1：80.
Embodiment 6
The present embodiment provides a kind of waste gas purification catalysis material and preparation method thereof, specific as follows：
Weigh catalyst 45g, carrier 1104g.Wherein catalyst is cupric oxide 20g and zinc oxide 25g mixture, is carried
Body is lanthana.By carrier, 1104g points are 6 parts, every part of 184g.Catalyst is divided into 5 parts, every part of 9g.
Calcining is carried out to every part of carrier at 220 DEG C 6 carrier layers are made, number consecutively carries for first vector layer to the 6th
Body layer, it is standby.
The first dispersion liquid is configured to the 5th dispersion liquid.Every part of catalyst is scattered in every part of mixed solution (including acetone 45g
With ethanol 45g) in, and ultrasonic disperse obtains the first dispersion liquid for 5 hours to the 5th dispersion liquid.Absorption is needed to urge on first vector layer
The side of agent is immersed in the first dispersion liquid, and soak time is 3 hours.
Again the first vector with catalyst obtained by above-mentioned steps is calcined to obtain first at 700 DEG C and answered
Close layer.Second support layer is directly covered in the Catalytic Layer of the first composite bed, and calcined at 400 DEG C again, it is multiple to obtain second
Close layer.
The side of adsorption catalyst is needed to be immersed in the second dispersion liquid the 3rd carrier layer, immersion carries after 3 hours by second
Body takes out, and naturally dry.The 3rd carrier layer is calcined at 600 DEG C again to obtain triplex layer.By triplex layer
On catalysis be placed on Second support layer, and calcined at 400 DEG C, obtain the 4th composite bed.
4th carrier layer to the 6th carrier layer is handled according to the processing mode of the 3rd carrier layer, last obtained waste gas
In purification catalysis material, altogether including 6 carrier layers, 5 Catalytic Layers.One is used in conjunction between adjacent 2 carrier layers to urge
Change layer, the area of each Catalytic Layer and the area ratio of adjacent carrier layer are 1:60.
Embodiment 7
The present embodiment provides a kind of waste gas purification catalysis material and preparation method thereof, specific as follows：
Weigh catalyst 30g, carrier 805g.Wherein catalyst is nickel oxide 5g, cobalt oxide 15g and manganese oxide 10g
Mixture, carrier are zirconium oxide 300g and aluminum oxide 505g mixture.By carrier, 805g points are 7 parts, every part of 115g.It will urge
Agent is divided into 6 parts, every part of 5g.
Calcining is carried out to every part of carrier at 260 DEG C 7 carrier layers are made, number consecutively carries for first vector layer to the 7th
Body layer, it is standby.
The first dispersion liquid is configured to the 6th dispersion liquid.By every part of catalyst be scattered in every part of mixed solution (including water 10g and
Acetone 6.67g) in, and ultrasonic disperse obtains the first dispersion liquid for 4 hours to the 6th dispersion liquid.Absorption is needed to urge on first vector layer
The side of agent is immersed in the first dispersion liquid, and soak time is 3 hours.
Again the first vector with catalyst obtained by above-mentioned steps is calcined to obtain first at 600 DEG C and answered
Close layer.Second support layer is directly covered in the Catalytic Layer of the first composite bed, and calcined at 400 DEG C again, it is multiple to obtain second
Close layer.
The side of adsorption catalyst is needed to be immersed in the second dispersion liquid the 3rd carrier layer, immersion carries after 3 hours by second
Body takes out, and naturally dry.The 3rd carrier layer is calcined at 600 DEG C again to obtain triplex layer.By triplex layer
On catalysis be placed on Second support layer, and calcined at 400 DEG C, obtain the 4th composite bed.
4th carrier layer to the 7th carrier layer is handled according to the processing mode of the 3rd carrier layer, last obtained waste gas
In purification catalysis material, altogether including 7 carrier layers, 6 Catalytic Layers.One is used in conjunction between adjacent 2 carrier layers to urge
Change layer, the area of each Catalytic Layer and the area ratio of adjacent carrier layer are 2:60.
Embodiment 8
The present embodiment provides a kind of waste gas purification catalysis material and preparation method thereof, specific as follows：
Weigh catalyst 35g, carrier 918g.Wherein catalyst is zinc oxide 5g, nickel oxide 5g, cobalt oxide 15g and oxygen
Change manganese 10g mixture, carrier is cerium oxide.By carrier, 918g points are 9 parts, every part of 102g.Catalyst is divided into 8 parts, every part
4.375g。
Calcining is carried out to every part of carrier at 305 DEG C 9 carrier layers are made, number consecutively carries for first vector layer to the 9th
Body layer, it is standby.
The first dispersion liquid is configured to the 8th dispersion liquid.By every part of catalyst be scattered in every part of mixed solution (including water 15g,
Ethanol 8.3g, acetone 4g) in, and ultrasonic disperse obtains the first dispersion liquid for 3 hours to the 8th dispersion liquid.First vector layer is needed
The side of adsorption catalyst is immersed in the first dispersion liquid, and soak time is 4 hours.
Again the first vector with catalyst obtained by above-mentioned steps is calcined to obtain first at 700 DEG C and answered
Close layer.Second support layer is directly covered in the Catalytic Layer of the first composite bed, and calcined at 500 DEG C again, it is multiple to obtain second
Close layer.
The side of adsorption catalyst is needed to be immersed in the second dispersion liquid the 3rd carrier layer, immersion carries after 4 hours by second
Body takes out, and naturally dry.The 3rd carrier layer is calcined at 600 DEG C again to obtain triplex layer.By triplex layer
On catalysis be placed on Second support layer, and calcined at 400 DEG C, obtain the 4th composite bed.
4th carrier layer to the 9th carrier layer is handled according to the processing mode of the 3rd carrier layer, the waste gas being eventually fabricated
In purification catalysis material, altogether including 9 carrier layers, 8 Catalytic Layers.One is used in conjunction between adjacent 2 carrier layers to urge
Change layer, the area of each Catalytic Layer and the area ratio of adjacent carrier layer are 1.5:50.
Comparative example
This comparative example provides a kind of waste gas purification catalysis material purchased in market, and main catalytic component is gold.
Test example 1
The catalysis material purchased in market that waste gas purification prepared by embodiment 1-8 is provided with catalysis material and comparative example is distinguished
It is fitted into reactor and same waste gas is purified, main pollutant is formaldehyde, carbon monoxide, hydrogen sulfide, two in waste gas
Nitrogen oxide, ammonia, the initial volume concentration of every kind of pollutant is respectively 10%, 3%, 9%, 5%, 8%.It is useless after purification
Each pollutant load is as shown in table 1 in gas.The volume for each pollutant that data in table 1 obtain for waste gas after single treatment
Concentration.
The volumetric concentration for each pollutant that the waste gas of table 1 obtains after single treatment
From the test result in table 1, purification journey of the waste gas purification catalysis material that embodiment 1-8 is provided to waste gas
Degree is higher.Under identical purification condition, the waste gas purification catalysis material purchased in market that comparative example provides is to the degree of purification of waste gas
It is relatively low.Even if the above results also show also have to its detergent power from same catalyst, the distribution mode of catalyst
Influence.
Test example 2
The catalysis material purchased in market that waste gas purification prepared by embodiment 1-8 is provided with catalysis material and comparative example is distinguished
It is fitted into reactor and same waste gas is purified.Main pollutant is benzene class, ketone, alcohols and other one in waste gas
A little containing oxygen derivatives.Above-mentioned 9 kinds of catalysis materials are recycled respectively, and constantly same waste gas is purified.Whenever urging
When the cycle-index of change material reaches 1000,3000,5000,8000,10000,15000,20000,25000,30000, then make
The gas inlet that is there is provided in test example 1 is handled with the catalysis material, and in the waste gas after measurement processing all contaminants it is total
Volumetric concentration (%) (total volume concentration of before processing pollutant is 35%).Test result is as shown in table 2.
Table 2 recycle after catalysis material to the result of waste gas
From the result in table 2, catalysis material purchased in market is after recycling number and reaching 20000 times, substantially
Inactivation, the degree for the treatment of of requirement can not be reached to waste gas.And the catalysis material that embodiment 1-8 is provided reaches in cycle-index
Still there is excellent exhaust-gas treatment ability after 30000 times.When catalysis material recycles number and is continuously increased, purchased in market urges
The disposal ability for changing material substantially has the trend gradually weakened.And the catalysis material that embodiment 1-8 is provided reaches in cycle-index
During to 25000 times, its exhaust-gas treatment ability just has fraction of decline.Therefore, the catalysis material that 1-8 of the embodiment of the present invention is provided is not
The degree of purification for making exhaust-gas treatment reach higher is only capable of, also there is longer service life.
Embodiments described above is part of the embodiment of the present invention, rather than whole embodiments.The reality of the present invention
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
Claims (10)
1. a kind of waste gas purification catalysis material, it is characterised in that including the catalyst 10-50 parts counted in parts by weight and use
In the carrier 500-1200 parts for carrying the catalyst, the carrier forms multilayer carrier layer, is filled out between the adjacent carrier layer
Fill the Catalytic Layer that the catalyst is formed；
The catalyst includes metal or metal oxide, and the metal includes the one or more in platinum, palladium, iridium, gold, silver,
The metal oxide includes the one or more in cupric oxide, zinc oxide, nickel oxide, cobalt oxide, manganese oxide；
The carrier includes the one or more in aluminum oxide, nickel oxide, cerium oxide, lanthana, zirconium oxide.
2. waste gas purification catalysis material according to claim 1, it is characterised in that the waste gas purification catalysis material
Including the catalyst 20-40 parts counted in parts by weight and described carrier 700-1000 parts.
3. waste gas purification catalysis material according to claim 1 or 2, it is characterised in that the area of the Catalytic Layer with
The area ratio of the adjacent carrier layer is 1-2：20-100.
4. waste gas purification catalysis material according to claim 3, it is characterised in that the area of the Catalytic Layer with it is adjacent
The area ratio of the carrier layer is 1-2：40-60.
A kind of 5. preparation method of waste gas purification catalysis material as described in claim any one of 1-4, it is characterised in that bag
Include and the catalyst is laid on first vector layer to and is calcined to obtain at 500-700 DEG C the first composite bed, then by second
Carrier is placed on first composite bed and is calcined to obtain the second composite bed at 300-500 DEG C, wherein, catalyst position
Between the first vector layer and the Second support layer, the first vector layer and the Second support layer are by the load
Body calcines formation at 200-300 DEG C.
6. the preparation method of waste gas purification catalysis material according to claim 5, it is characterised in that the catalyst paving
In mainly using following methods on the first vector layer：
The catalyst is scattered in solution, and ultrasonic disperse 3-5 hours obtain the first dispersion liquid, then by the first vector
Layer is immersed in first dispersion liquid, and the solution includes the one or more in water, ethanol, acetone, the first vector
Soak time is 4-7 hours.
7. the preparation method of waste gas purification catalysis material according to claim 6, it is characterised in that described first is scattered
Liquid includes the described solution 50-100 parts counted in parts by weight and described catalyst 10-15 parts.
8. the preparation method of waste gas purification catalysis material according to claim 5, it is characterised in that the Second support
It is placed on further comprising the steps of before being calcined on first composite bed：
The catalyst is laid on the Second support layer, and is calcined at 500-700 DEG C to obtain triplex layer, then
The triplex is placed on first composite bed and is calcined to obtain the second composite bed at 300-500 DEG C.
9. the preparation method of waste gas purification catalysis material according to claim 8, it is characterised in that the catalyst paving
In mainly using following methods on the Second support layer：
The catalyst is scattered in solution, and ultrasonic disperse 3-5 hours obtain the second dispersion liquid, then by the Second support
Layer is immersed in second dispersion liquid, and the solution includes the one or more in water, ethanol, acetone, after immersion 1-3 hours
The Second support take out, and naturally dry.
10. the preparation method of waste gas purification catalysis material according to claim 9, it is characterised in that described second point
Dispersion liquid includes the described solution 50-100 parts counted in parts by weight and described catalyst 3-8 parts.
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| CN110586199A (en) * | 2019-10-12 | 2019-12-20 | 无锡威孚环保催化剂有限公司 | Waste gas treatment catalyst for combined enameled wire machine and preparation method thereof |
| CN110658186A (en) * | 2019-10-22 | 2020-01-07 | 北京联合大学 | Sensitive material for simultaneously measuring formaldehyde, benzene and carbon monoxide |
| CN113651351A (en) * | 2021-08-16 | 2021-11-16 | 广东工业大学 | Samarium oxide and preparation and application thereof |
| CN114602503A (en) * | 2022-03-27 | 2022-06-10 | 山东亮剑环保新材料有限公司 | Spherical particle VOCs catalyst and preparation method thereof |
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| CN1638848A (en) * | 2001-06-26 | 2005-07-13 | 大发工业株式会社 | Exhaust gas purifying catalyst |
| CN101632930A (en) * | 2008-07-25 | 2010-01-27 | 比亚迪股份有限公司 | Catalyst for purifying automobile tail gas and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109395742A (en) * | 2018-12-21 | 2019-03-01 | 无锡威孚环保催化剂有限公司 | A kind of oxidation catalyst and preparation method thereof of catalysis burning VOCs |
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| CN110658186A (en) * | 2019-10-22 | 2020-01-07 | 北京联合大学 | Sensitive material for simultaneously measuring formaldehyde, benzene and carbon monoxide |
| CN110658186B (en) * | 2019-10-22 | 2021-08-13 | 北京联合大学 | Sensitive material for simultaneously measuring formaldehyde, benzene and carbon monoxide |
| CN113651351A (en) * | 2021-08-16 | 2021-11-16 | 广东工业大学 | Samarium oxide and preparation and application thereof |
| CN114602503A (en) * | 2022-03-27 | 2022-06-10 | 山东亮剑环保新材料有限公司 | Spherical particle VOCs catalyst and preparation method thereof |
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