CN108671894A - A kind of active carbon-supported catalyst of absorption waste gas containing benzene - Google Patents
A kind of active carbon-supported catalyst of absorption waste gas containing benzene Download PDFInfo
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- CN108671894A CN108671894A CN201810423146.5A CN201810423146A CN108671894A CN 108671894 A CN108671894 A CN 108671894A CN 201810423146 A CN201810423146 A CN 201810423146A CN 108671894 A CN108671894 A CN 108671894A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0211—Compounds of Ti, Zr, Hf
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
Abstract
The present invention relates to waste gas purification technical fields, and in particular to a kind of active carbon-supported catalyst of absorption waste gas containing benzene, the active carbon-supported catalyst of the absorption waste gas containing benzene are made of the substance of following parts by weight：50~100 parts by weight of citrus plant pericarp, 6~24 parts by weight of organic titanate, 0.2~1 parts by weight of transition metal salt, CH3NH32~8 parts by weight of I, 1~8 parts by weight of urea, 3~15 parts by weight of graphene oxide, 2~5 parts by weight of reducing agent, 5~10 parts by weight of diallyl dimethyl ammoniumchloride, 3~5 parts by weight of silane coupling agent, 50~120 parts by weight of solvent.The active carbon-supported catalyst of the absorption waste gas containing benzene of the present invention can realize the enrichment of benzene in exhaust gas, and carry out catalysis reduction to benzene, can quickly and effectively purify the benzene in exhaust gas, ensure the safety of air, provide the living environment of health for people.
Description
Technical field
The present invention relates to waste gas purification technical fields, and in particular to a kind of active carbon-supported catalyst of absorption waste gas containing benzene.
Background technology
Atmosphere pollution is China's one of problem of environmental pollution outstanding at present, and wherein volatile organic matter is atmosphere pollution
Important sources.Largely the industrial waste gas containing volatile organic matter is discharged into air, causes the bad border quality of air to decline, while also giving
Health brings harm, and the benzene,toluene,xylene as Typical Volatile Organic exhaust gas representativeness pollutant (contains
Benzene), human body can be entered by respiratory tract and skin, the systems such as breathing, blood, the liver of people and organ can be made to cause temporary
Or permanent lesion, especially benzene naphthalene pyrene class polycyclic aromatic hydrocarbon can make human body directly carcinogenic to cause the great attention of the mankind.So
Become a major issue in current atmospheric pollution control to the improvement of benzene.
At present for low concentration, non-recovery value benzene exhaust air mostly use disruptive method be such as catalyzed burning, corona method or
Plasma method；And middle and high concentration, have recycle be worth volatile organic compounds then as far as possible use non-destructive side
Method is such as adsorbed and is absorbed.Absorption method is a kind of common method of the processing containing volatile organic matter, and wherein active carbon adsorption is answered
With the most extensively, but it is easy to generate secondary pollution, and resistance is very high, causes running expense higher.Therefore, it finds a kind of
The adsorbent for efficiently administering benzene exhaust air is particularly important.
Invention content
It is of the existing technology the purpose of the invention is to overcome the problems, such as, a kind of activated carbon of absorption waste gas containing benzene is provided
Base adsorbent, the active carbon-supported catalyst of the absorption waste gas containing benzene can realize the enrichment of benzene in exhaust gas, and be catalyzed to benzene
Reduction, can quickly and effectively purify the benzene in exhaust gas, ensure the safety of air, provide the living environment of health for people.
To achieve the goals above, the present invention provides a kind of active carbon-supported catalyst of absorption waste gas containing benzene, by weighing as follows
The substance of amount part is made：50~100 parts by weight of citrus plant pericarp, 6~24 parts by weight of organic titanate, transition metal salt
0.2~1 parts by weight, CH3NH32~8 parts by weight of I, 1~8 parts by weight of urea, 3~15 parts by weight of graphene oxide, reducing agent 2~
5 parts by weight, 5~10 parts by weight of diallyl dimethyl ammoniumchloride, 3~5 parts by weight of silane coupling agent, 50~120 weight of solvent
Measure part.
Through the above technical solutions, the present invention is by porous carbon and organic titanate, transition metal salt and CH3NH3I reacts, energy
It is enough to generate CH in the hole of porous carbon3NH3The modification TiO that I and metallic element are modified altogether2, to improve the visible of titanium dioxide
Photoresponse range and response intensity improve the catalytic efficiency of titanium dioxide；Then by modified porous activated carbon and herbaceous plant
Carry out ultrasound and microwave treatment so that herbaceous plant particle can enter in the hole of porous carbon, improve modified porous activated carbon
To the degradation efficiency of benzene.The active carbon-supported catalyst of the absorption waste gas containing benzene of the present invention contains abundant pore structure, specific surface
Product is high, can realize the enrichment of benzene in exhaust gas, and carry out situ catalytic to it in enriched site, has removal rate high, inhales
Attached resistance is small, and will not cause secondary pollution.
Specific implementation mode
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
The present invention provides a kind of active carbon-supported catalyst of absorption waste gas containing benzene, is made of the substance of following parts by weight：Mandarin orange
50~100 parts by weight of tangerine platymiscium pericarp, 6~24 parts by weight of organic titanate, 0.2~1 parts by weight of transition metal salt, CH3NH3I
2~8 parts by weight, 1~8 parts by weight of urea, 3~15 parts by weight of graphene oxide, 2~5 parts by weight of reducing agent, polydiene propyl two
5~10 parts by weight of ammonio methacrylate, 3~5 parts by weight of silane coupling agent, 50~120 parts by weight of solvent.It is described under optimum condition
The active carbon-supported catalyst for adsorbing waste gas containing benzene, is made of the substance of following parts by weight：60~80 weight of citrus plant pericarp
Part, 12~20 parts by weight of organic titanate, 0.2~0.6 parts by weight of transition metal salt, 3~6 parts by weight of CH3NH3I, urea 2~
6 parts by weight, 5~12 parts by weight of graphene oxide, 2~5 parts by weight of reducing agent, 5~10 weight of diallyl dimethyl ammoniumchloride
Measure part, 3~5 parts by weight of silane coupling agent, 50~120 parts by weight of solvent.
The present invention also provides a kind of preparation methods of the active carbon-supported catalyst of the absorption waste gas containing benzene, including following step
Suddenly：
(1) by citrus plant pericarp in atmosphere of inert gases at 100~160 DEG C annealing 2~for 24 hours, then heat up
To 300~700 DEG C of 1~8h of double annealing, porous activated carbon is obtained；
(2) organic titanate, transition metal salt and urea are uniformly mixed in a solvent, porous active is then added
Charcoal, CH3NH3I and silane coupling agent then seal 2~6h of thermal response at 100~160 DEG C, obtain modified porous activated carbon；
(3) in a solvent after mixing by modified porous activated carbon and diallyl dimethyl ammoniumchloride, ultrasound point
1~3h is dissipated, mixed system is obtained, then addition graphene oxide and reducing agent into the mixed system, continuation ultrasonic disperse 2~
6h obtains the active carbon-supported catalyst of absorption waste gas containing benzene after centrifugation, washing, drying.
Containing abundant pore structure in citrus plant pericarp, material feedstock derives from a wealth of sources, after being calcined to it, energy
Enough porous activated carbons generated with high-specific surface area, high adsorption, the citrus plant pericarp can be orange peel, lemon
At least one of skin, fragrant citrus pericarp, pomelo peel and Pericarpium Citri.
By by porous carbon and organic titanate, transition metal salt and CH in the present invention3NH3I reacts, can be in porous carbon
Hole in generate CH3NH3The modification TiO that I and metallic element are modified altogether2, avoid TiO2Poorly conductive and light induced electron and
Hole is easy the shortcomings that recombination, to improve the visible light-responded range and response intensity of titanium dioxide, improves titanium dioxide
Catalytic efficiency；Under optimum condition, the mass ratio of the organic titanate and transition metal salt is (30~100):1.Preferred stripe
Under part, the organic titanate is selected from tetraethyl titanate, tetramethoxy titanate ester, tetraisopropyl titanate, tetrabutyl titanate, metatitanic acid four
At least one of N-butyl.The transition metal salt is selected from soluble ferric iron salt, soluble nickel salt, soluble zinc salt, solubility
At least one of cobalt salt, soluble manganese salt, soluble silver salt, soluble molybdenum salt.
Under optimum condition, the silane coupling agent is selected from aminopropyl triethoxysilane, aminopropyl trimethoxysilane, 2-
Aminoethyl amino propyl trimethoxy silane, divinyl triammonium base propyl trimethoxy silicane, aminoethylaminopropyl methyl dimethoxy oxygen
In base silane, aminoethylaminopropyl triethoxysilane, urea propyl-triethoxysilicane and urea propyl trimethoxy silicane extremely
Few one kind.
It, can by mixing modified porous activated carbon in a solvent with diallyl dimethyl ammoniumchloride in the present invention
So that diallyl dimethyl ammoniumchloride ionizes, positively charged organic filler is generated, which can inhale
It is attached to modified porous activated carbon surface, and electrostatic interaction occurs with positively charged redox graphene so that graphene oxide
It is further compound with the progress of modified porous activated carbon, reducing agent is then added, graphene oxide is reduced into redox graphite
Alkene, to improve catalytic performance of the material to benzene.Under optimum condition, the reducing agent is selected from hydrazine hydrate, sodium borohydride and anti-bad
At least one of hematic acid.
Under optimum condition, the solvent is in glycerine, ethyl alcohol, isopropanol, propylene glycol, ethylene glycol, water and n-butanol
At least one.
The present invention will be described in detail by way of examples below.
Embodiment 1
A kind of active carbon-supported catalyst of absorption waste gas containing benzene, is made of the substance of following parts by weight：75 weight of lemon peel
Part, 16 parts by weight of tetraethyl titanate, 0.4 parts by weight of cobalt acetate, CH3NH35 parts by weight of I, 4 parts by weight of urea, graphene oxide 8
Parts by weight, 4 parts by weight of hydrazine hydrate, 8 parts by weight of diallyl dimethyl ammoniumchloride, divinyl triammonium base propyl trimethoxy silicon
4 parts by weight of alkane, 120 parts by weight of water.
The preparation method of the active carbon-supported catalyst of the absorption waste gas containing benzene, includes the following steps：
(1) lemon peel is put into Muffle furnace in argon atmosphere at 100 DEG C dry 20h, then is warming up to 450 DEG C, forged
6h is burnt, porous activated carbon is obtained；
(2) tetraethyl titanate, cobalt acetate and urea are uniformly mixed in water, then be added porous activated carbon,
CH3NH3I and divinyl triammonium base propyl trimethoxy silicane then seal thermal response 4h at 150 DEG C, obtain modified porous work
Property charcoal；
(3) in water after mixing by modified porous activated carbon and diallyl dimethyl ammoniumchloride, ultrasonic disperse
1.5h obtains mixed system, and graphene oxide and hydrazine hydrate are then added into the mixed system, continues ultrasonic disperse 2h, from
After the heart, washing, drying, the active carbon-supported catalyst of absorption waste gas containing benzene is obtained.
Embodiment 2
A kind of active carbon-supported catalyst of absorption waste gas containing benzene, is made of the substance of following parts by weight：80 weight of pomelo peel
Part, 12 parts by weight of tetramethoxy titanate ester, 0.4 parts by weight of silver nitrate, CH3NH33.2 parts by weight of I, 6 parts by weight of urea, graphene oxide
5 parts by weight, 5 parts by weight of sodium borohydride, 10 parts by weight of diallyl dimethyl ammoniumchloride, urea propyl trimethoxy silicane 4.5
Parts by weight, 100 parts by weight of water.
The preparation method of the active carbon-supported catalyst of the absorption waste gas containing benzene, includes the following steps：
(1) pomelo peel is put into Muffle furnace in argon atmosphere at 120 DEG C dry 12h, then is warming up to 500 DEG C, forged
4h is burnt, porous activated carbon is obtained；
(2) tetramethoxy titanate ester, silver nitrate and urea are uniformly mixed in water, then be added porous activated carbon,
CH3NH3I and urea propyl trimethoxy silicane then seal thermal response 4h at 120 DEG C, obtain modified porous activated carbon；
(3) in water after mixing by modified porous activated carbon and diallyl dimethyl ammoniumchloride, ultrasonic disperse
1.5h obtains mixed system, and graphene oxide and sodium borohydride are then added into the mixed system, continues ultrasonic disperse 3h,
After centrifugation, washing, drying, the active carbon-supported catalyst of absorption waste gas containing benzene is obtained.
Embodiment 3
A kind of active carbon-supported catalyst of absorption waste gas containing benzene, is made of the substance of following parts by weight：60 weight of orange peel
Part, 24 parts by weight of tetra-n-butyl titanate, 0.6 parts by weight of sodium molybdate, CH3NH35.3 parts by weight of I, 2 parts by weight of urea, graphite oxide
12 parts by weight of alkene, 2 parts by weight of sodium borohydride, 5 parts by weight of diallyl dimethyl ammoniumchloride, aminoethylaminopropyl triethoxy
3.5 parts by weight of silane, 150 parts by weight of ethylene glycol.
The preparation method of the active carbon-supported catalyst of the absorption waste gas containing benzene, includes the following steps：
(1) orange peel is put into Muffle furnace in argon atmosphere at 120 DEG C dry 5h, then is warming up to 400 DEG C, calcined
3h obtains porous activated carbon；
(2) tetra-n-butyl titanate, sodium molybdate and urea are uniformly mixed in ethylene glycol, porous active is then added
Charcoal, CH3NH3I and aminoethylaminopropyl triethoxysilane then seal thermal response 3h at 150 DEG C, obtain modified porous work
Property charcoal；
(3) by modified porous activated carbon and diallyl dimethyl ammoniumchloride in ethylene glycol after mixing, ultrasound
Disperse 2h, obtain mixed system, graphene oxide and sodium borohydride are then added into the mixed system, continues ultrasonic disperse
3h obtains the active carbon-supported catalyst of absorption waste gas containing benzene after centrifugation, washing, drying.
Embodiment 4
A kind of active carbon-supported catalyst of absorption waste gas containing benzene, is made of the substance of following parts by weight：100 weight of fragrant citrus pericarp
Part, 20 parts by weight of tetrabutyl titanate, 0.2 parts by weight of zinc chloride, CH3NH32 parts by weight of I, 8 parts by weight of urea, graphene oxide
15 parts by weight, 5 parts by weight of ascorbic acid, 5 parts by weight of diallyl dimethyl ammoniumchloride, aminoethylaminopropyl triethoxysilicane
3 parts by weight of alkane, 200 parts by weight of ethyl alcohol.
The preparation method of the active carbon-supported catalyst of the absorption waste gas containing benzene, includes the following steps：
(1) fragrant citrus pericarp is put into Muffle furnace in argon atmosphere at 160 DEG C dry 2h, then is warming up to 700 DEG C of calcinings
1h obtains porous activated carbon；
(2) tetrabutyl titanate, zinc chloride and urea are uniformly mixed in ethanol, porous active is then added
Charcoal, CH3NH3I and aminoethylaminopropyl triethoxysilane then seal thermal response 6h at 160 DEG C, obtain modified porous work
Property charcoal；
(3) in ethanol after mixing by modified porous activated carbon and diallyl dimethyl ammoniumchloride, ultrasound point
3h is dissipated, mixed system is obtained, graphene oxide and ascorbic acid are then added into the mixed system, continues ultrasonic disperse 2h,
After centrifugation, washing, drying, the active carbon-supported catalyst of absorption waste gas containing benzene is obtained.
Embodiment 5
A kind of active carbon-supported catalyst of absorption waste gas containing benzene, is made of the substance of following parts by weight：50 weight of Pericarpium Citri
Measure part, 24 parts by weight of quanmethyl silicate, 1 parts by weight of cobalt chloride, CH3NH38 parts by weight of I, 1 parts by weight of urea, graphene oxide 3
Parts by weight, 2 parts by weight of ascorbic acid, 10 parts by weight of diallyl dimethyl ammoniumchloride, 5 weight of urea propyl-triethoxysilicane
Part, 100 parts by weight of isopropanol.
The preparation method of the active carbon-supported catalyst of the absorption waste gas containing benzene, includes the following steps：
(1) Pericarpium Citri is put into Muffle furnace in argon atmosphere and is dried for 24 hours at 100 DEG C, then be warming up to 300 DEG C,
8h is calcined, porous activated carbon is obtained；
(2) quanmethyl silicate, cobalt chloride and urea are uniformly mixed in isopropanol, porous active is then added
Charcoal, CH3NH3I and urea propyl-triethoxysilicane then seal thermal response 2h at 160 DEG C, obtain modified porous activated carbon；
(3) by modified porous activated carbon and diallyl dimethyl ammoniumchloride in isopropanol after mixing, ultrasound
Disperse 1h, obtain mixed system, graphene oxide and ascorbic acid are then added into the mixed system, continues ultrasonic disperse
6h obtains the active carbon-supported catalyst of absorption waste gas containing benzene after centrifugation, washing, drying.
Comparative example 1
A kind of active carbon-supported catalyst of absorption waste gas containing benzene, is made of the substance of following parts by weight：75 weight of lemon peel
Part, 16 parts by weight of tetraethyl titanate, 0.4 parts by weight of cobalt acetate, CH3NH35 parts by weight of I, 4 parts by weight of urea, graphene oxide 8
Parts by weight, 4 parts by weight of hydrazine hydrate, 8 parts by weight of diallyl dimethyl ammoniumchloride, divinyl triammonium base propyl trimethoxy silicon
4 parts by weight of alkane, 120 parts by weight of water.
The preparation method of the active carbon-supported catalyst of the absorption waste gas containing benzene, includes the following steps：
(1) lemon peel is put into Muffle furnace in argon atmosphere at 100 DEG C dry 20h, then is warming up to 450 DEG C, forged
6h is burnt, porous activated carbon is obtained；
(2) tetraethyl titanate, cobalt acetate and urea are uniformly mixed in water, porous activated carbon and two is then added
Ethylene triamido propyl trimethoxy silicane then seals thermal response 4h at 150 DEG C, obtains modified porous activated carbon；
(3) in water after mixing by modified porous activated carbon and diallyl dimethyl ammoniumchloride, ultrasonic disperse
1.5h obtains mixed system, and graphene oxide and hydrazine hydrate are then added into the mixed system, continues ultrasonic disperse 2h, from
After the heart, washing, drying, the active carbon-supported catalyst of absorption waste gas containing benzene is obtained.
Comparative example 2
A kind of active carbon-supported catalyst of absorption waste gas containing benzene, is made of the substance of following parts by weight：75 weight of lemon peel
Part, 16 parts by weight of tetraethyl titanate, 0.4 parts by weight of cobalt acetate, CH3NH35 parts by weight of I, 4 parts by weight of urea, divinyl triammonium base
4 parts by weight of propyl trimethoxy silicane, 120 parts by weight of water.
The preparation method of the active carbon-supported catalyst of the absorption waste gas containing benzene, includes the following steps：
(1) lemon peel is put into Muffle furnace in argon atmosphere at 100 DEG C dry 20h, then is warming up to 450 DEG C, forged
6h is burnt, porous activated carbon is obtained；
(2) tetraethyl titanate, cobalt acetate and urea are uniformly mixed in water, then be added porous activated carbon,
CH3NH3I and divinyl triammonium base propyl trimethoxy silicane then seal thermal response 4h, centrifugation, washing, drying at 150 DEG C
Afterwards, that is, the active carbon-supported catalyst of waste gas containing benzene is adsorbed.
Experiment test：
Purification of the active carbon-supported catalyst of absorption waste gas containing benzene in 1-5 of the embodiment of the present invention and comparative example 1-2 to benzene
Performance evaluation carries out in the straight type polytetrafluoroethylene (PTFE) pipe reactor of Φ 20mm, long 200mm, will adsorb the activated carbon base of waste gas containing benzene
Adsorbent is added in polytetrafluoroethylene (PTFE) pipe reactor, and unstripped gas group becomes：Benzene concentration 300mg/m3, remaining is air.Reaction exists
It is carried out under 25 DEG C of atmospheric pressure environments, reactor gas space velocity (GHSV) is 3000h-1, experimental result is as shown in table 1.
Table 1：The purifying property of waste-gas adsorbant in embodiment and comparative example to benzene
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In the skill of the present invention
In art conception range, technical scheme of the present invention can be carried out a variety of simple variants, including each technical characteristic with it is any its
Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to
Protection scope of the present invention.
Claims (7)
1. a kind of active carbon-supported catalyst of absorption waste gas containing benzene, which is characterized in that be made of the substance of following parts by weight：Citrus
50~100 parts by weight of platymiscium pericarp, 6~24 parts by weight of organic titanate, 0.2~1 parts by weight of transition metal salt, CH3NH3I 2
~8 parts by weight, 1~8 parts by weight of urea, 3~15 parts by weight of graphene oxide, 2~5 parts by weight of reducing agent, polydiene propyl two
5~10 parts by weight of ammonio methacrylate, 3~5 parts by weight of silane coupling agent, 50~120 parts by weight of solvent.
2. the active carbon-supported catalyst of absorption waste gas containing benzene according to claim 1, which is characterized in that by following parts by weight
Substance be made：60~80 parts by weight of citrus plant pericarp, 12~20 parts by weight of organic titanate, transition metal salt 0.2~
0.6 parts by weight, 3~6 parts by weight of CH3NH3I, 2~6 parts by weight of urea, 5~12 parts by weight of graphene oxide, reducing agent 2~5
Parts by weight, 5~10 parts by weight of diallyl dimethyl ammoniumchloride, 3~5 parts by weight of silane coupling agent, 50~120 weight of solvent
Part.
3. the active carbon-supported catalyst of absorption waste gas containing benzene according to claim 1, which is characterized in that organic metatitanic acid
Ester in tetraethyl titanate, tetramethoxy titanate ester, tetraisopropyl titanate, tetrabutyl titanate, tetra-n-butyl titanate at least one
Kind.
4. the active carbon-supported catalyst of absorption waste gas containing benzene according to claim 1, which is characterized in that the transition metal
Salt is selected from soluble ferric iron salt, soluble nickel salt, soluble zinc salt, soluble cobalt, soluble manganese salt, soluble silver salt, solvable
At least one of property molybdenum salt.
5. the active carbon-supported catalyst of absorption waste gas containing benzene according to claim 1, which is characterized in that described silane coupled
Agent is selected from aminopropyl triethoxysilane, aminopropyl trimethoxysilane, 2- aminoethyl amino propyl trimethoxy silanes, divinyl
Triamido propyl trimethoxy silicane, aminoethylaminopropyl methyl dimethoxysilane, aminoethylaminopropyl triethoxysilane,
At least one of urea propyl-triethoxysilicane and urea propyl trimethoxy silicane.
6. the active carbon-supported catalyst of absorption waste gas containing benzene according to claim 1, which is characterized in that the reducing agent choosing
From at least one of hydrazine hydrate, sodium borohydride and ascorbic acid.
7. the active carbon-supported catalyst of absorption waste gas containing benzene according to claim 1, which is characterized in that the solvent is selected from
At least one of glycerine, ethyl alcohol, isopropanol, propylene glycol, ethylene glycol, water and n-butanol.
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