CN108889340A - A kind of catalytic degradation vehicle exhaust type asphalt preparation method - Google Patents

A kind of catalytic degradation vehicle exhaust type asphalt preparation method Download PDF

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Publication number
CN108889340A
CN108889340A CN201810957241.3A CN201810957241A CN108889340A CN 108889340 A CN108889340 A CN 108889340A CN 201810957241 A CN201810957241 A CN 201810957241A CN 108889340 A CN108889340 A CN 108889340A
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asphalt
bamboo charcoal
tio
added
catalytic degradation
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许涛
郭涛
田清
袁峻
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Nanjing Forestry University
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Nanjing Forestry University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/26Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
    • B01J31/38Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of titanium, zirconium or hafnium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/92Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/92Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/945Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/19Catalysts containing parts with different compositions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/30Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/39Photocatalytic properties
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/50Carbon oxides
    • B01D2257/502Carbon monoxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/50Carbon oxides
    • B01D2257/504Carbon dioxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/702Hydrocarbons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/01Engine exhaust gases
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/18Carbon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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Abstract

The present invention provides a kind of preparation method of catalytic degradation vehicle exhaust type asphalt, belongs to ground surface material technical field, solves to add inorganic nano TiO directly in asphalt at present2Photochemical catalyst and lead to that dispersion effect is poor, photocatalysis efficiency is low, be easy to run off, influences asphalt routine pavement performance.Bamboo charcoal fiber is boiled first, is cleaned up by the present invention;It respectively takes butyl titanate and boric acid to be dissolved in dehydrated alcohol respectively, hydrochloric acid is added in boric acid solution, butyl titanate is added dropwise in boric acid solution after mixing evenly;Then distilled water and bamboo charcoal fiber is added, gel is made in stirring and ageing;It is calcined and bamboo charcoal fiber load TiO is made2Photochemical catalyst;Finally, being added in asphalt according to different addition quantity, the catalytic degradation effect to tail gas main component is evaluated respectively, determines the optimum mix amount, prepare catalytic degradation vehicle exhaust type asphalt.The present invention improves TiO2Photocatalytic degradation tail gas effect, reducing influences Asphalt Mixture Performance.

Description

A kind of catalytic degradation vehicle exhaust type asphalt preparation method
Technical field
The present invention is a kind of catalytic degradation vehicle exhaust type asphalt preparation method, belongs to ground surface material technology neck Domain.
Background technique
The fast development of urban transportation brings great convenience to people's trip, but vehicle exhaust is to urban air environment Cause serious pollution.It is one of current urgent problem that vehicle exhaust of how effectively degrading, which improves air quality,. Research shows that the highdensity volume of traffic increases the concentration of oxynitrides and volatile organic compounds in air, to the public's Health brings serious influence.These pollutants are also possible to cause secondary pollution by migrating for long range, lead to acid rain Generation and ozone hole formation.
In view of vehicle exhaust is mainly flowed to road surface in discharge process, if catalysis material is added to road surface material In material, vehicle exhaust can be converted into harmless substance by the effect of catalysis material, to realize degradation vapour The purpose of tail gas.Therefore, the asphalt that preparation can be used for catalytic degradation vehicle exhaust has become a kind of feasible side Method.
Photocatalysis technology is Solar use, one of method of great application potential in the depollution of environment.TiO2Semiconductor tool Have the advantages that nontoxic, cheap, efficient, stable, but its forbidden bandwidth is 3.2eV, is only capable of using the ultraviolet light in sunlight, this limit Its extensive use is made.Therefore, modification and modified TiO2Making it have visible light activity becomes the research hotspot of photocatalysis field. Studies have shown that TiO can be made using means such as noble metal loading, ion doping, semiconductors coupling and photosensitizers2Photoresponse Wavelength is expanded to visible region, and improves TiO to some extent2Visible light catalysis activity.By TiO2Being carried on carrier is to solve Photochemical catalyst is easy to run off, improves the effective way that photochemical catalyst absorbs pollutant ability.TiO2Composite carrier is in recent years To improve TiO2Photocatalytic activity and the new method proposed, this method mainly utilize carrier material strong adsorption, specific surface Product big, nontoxic and corrosion resistance it is strong the advantages that, with bentonite, baby's diatomaceous earth, new carbon etc. be carrier material form it is compound System.
Fiber is as a kind of high-strength, durable, light reinforcing material, due to that can greatly improve the mechanical property of bituminous pavement Can and it prolong its service life and more and more be applied.The addition of fiber can be played microcosmic while adsorptive pitch The effect of reinforcement.Existing engineering practice shows that the addition of road fiber can be improved the cracking resistance of bituminous concrete and resist Deformability, this excellent performance that can be effectively improved bituminous pavement high-temperature stability, fatigue durability and anti-low-temperature cracking, So that the application prospect of fiber and steel bar reinforced mixture is more extensive.
Existing research at present determines nanoscale catalysis material TiO not yet2Effective method of modifying, and how to pass through Effective carrying method plays the synergistic effect of support materials and catalysis material, is catalyzed while reaching absorption pollutant The purpose of degradation reaction needs to be further studied.Therefore, the modified TiO of bamboo charcoal fiber material load is selected2, on the one hand realize On the other hand bituminous pavement catalytic degradation automobile exhaust pollutant improves the practical performance of asphalt, have preferable real With value and research significance.
Summary of the invention
(1) technical problem
It is an object of the present invention to provide a kind of preparation methods of catalytic degradation vehicle exhaust type asphalt, solve straight at present Meet the admixture inorganic nano TiO in asphalt2Photochemical catalyst and cause dispersion effect is poor, photocatalysis efficiency is low, be easy to run off, The problems such as influencing asphalt routine pavement performance, is reduced mixed to pitch to improve photocatalytic degradation vehicle exhaust effect Close the influence for expecting conventional pavement performance.
(2) technical solution
Due to nano-TiO2Partial size it is very small, be easy to happen reunion, the problems such as contact area is small, and under normal conditions, The TiO of micron, Nano grade2When admixture dosage is higher, ductility can be declined, and the present invention first boils bamboo charcoal fiber, Dust and surface residues are removed with deionized water, it is 6 hours dry;Butyl titanate and boric acid is respectively taken to distinguish in two beakers molten In dehydrated alcohol, make boron ion and the molar ratio of titanium ion 1: 20,1 milliliter of hydrochloric acid is added in boric acid solution, stirring is equal After even, butyl titanate is added dropwise in boric acid solution, after being added dropwise, continues to stir;Then distilled water and spare is added Bamboo charcoal fiber, form colloidal sol after stirring, be aged and gel is made;By gel box drying to constant weight, calcined 2 hours at 400 DEG C, The nano-TiO of bamboo charcoal fiber load boron modification is made2Photochemical catalyst;Secondly, load boron modification nano-TiO2Fiber is according to difference Volume is respectively added in asphalt, determines that gradation and asphalt content prepare asphalt according to mix-design;Most Afterwards, it using the automobile exhaust degrading test macro of independent research, detects, evaluated to tail hydrocarbon in gas, nitrogen oxidation respectively Close object, carbon monoxide, four kinds of main components of carbon dioxide catalytic degradation effect, determine load boron modification nano-TiO2Fiber The optimum mix amount prepares catalytic degradation vehicle exhaust type asphalt.
(3) beneficial effect
Catalysis material nano-TiO2Carrying method can solve TiO2Easy to reunite, the problems such as contact area is small, or system Standby composite material is to improve reactivity worth, and relevant test result also indicates that, TiO2Can have with the synergistic effect of support materials Effect improves reactivity, achievees the purpose that vehicle exhaust of effectively degrading.The addition of fiber can be played while adsorptive pitch The effect of microcosmic reinforcement improves the pavement performance of bituminous pavement.It is provided by the invention using bamboo charcoal fiber as carrier, be based on it Stronger absorption property and reinforced action are improving TiO2While volume, enhance its photo-catalysis capability, plays the collaboration of the two Effect, preparation degradation vehicle exhaust type asphalt, reduces automobile exhaust pollution, improves air quality.
Specific embodiment
The present invention provides a kind of preparation method of catalytic degradation vehicle exhaust type asphalt, and specific implementation step is such as Under:
(1) be 10 microns by diameter, length is that 6 millimeters of bamboo charcoal fibers boil, cleaned 3 times with deionized water, remove dust And surface impurity, at 100 DEG C dry 6 hours it is spare;
(2) it respectively takes 15 milliliters of butyl titanates and 3.2 milliliters of boric acid to be dissolved in dehydrated alcohol in two beakers respectively, makes boron The molar ratio of ion and titanium ion is 1: 20;
(3) 1 milliliter of hydrochloric acid is added in boric acid solution, stirs evenly, butyl titanate is added dropwise in boric acid solution, to After being added dropwise, continue stirring 15 minutes;
(4) 4 ml deionized waters and 30 grams of spare bamboo charcoal fibers are added, stirring formed colloidal sol after 30 minutes, at room temperature Gel is made in ageing 24 hours;
(5) gel is placed on 100 DEG C of thermostatic drying chambers dryings 12 hours, is calcined 2 hours at 400 DEG C, it is fine that bamboo charcoal is made The nano-TiO of dimension load boron modification2Composite photo-catalyst;
(6) load boron modification nano-TiO2Bamboo charcoal fiber be respectively added in asphalt according to different addition quantity, The gradation and asphalt content determined according to mix-design prepares asphalt;
(7) the automobile exhaust degrading test macro for using independent research is detected respectively, is evaluated to nytron in tail gas Object, oxynitrides, carbon monoxide, four kinds of main components of carbon dioxide catalytic degradation effect, determine bamboo charcoal fiber load boron Modified nano-TiO2The optimum mix amount of composite photo-catalyst prepares catalytic degradation vehicle exhaust type asphalt.

Claims (1)

1. a kind of preparation method of catalytic degradation vehicle exhaust type asphalt, it is characterised in that the specific steps of this method are such as Under:
(1) be 10 microns by diameter, length is that 6 millimeters of bamboo charcoal fibers boil, and is cleaned 3 times with deionized water, remove dust and table Face impurity, at 100 DEG C dry 6 hours it is spare;
(2) it respectively takes 15 milliliters of butyl titanates and 3.2 milliliters of boric acid to be dissolved in dehydrated alcohol in two beakers respectively, makes boron ion Molar ratio with titanium ion is 1: 20;
(3) 1 milliliter of hydrochloric acid is added in boric acid solution, stirs evenly, butyl titanate is added dropwise in boric acid solution, wait is added dropwise After, continue stirring 15 minutes;
(4) 4 ml deionized waters and 30 grams of spare bamboo charcoal fibers are added, stirring forms colloidal sol after 30 minutes, is aged at room temperature 24 hours, gel is made;
(5) gel is placed on 100 DEG C of thermostatic drying chambers dryings 12 hours, is calcined 2 hours at 400 DEG C, it is negative that bamboo charcoal fiber is made Carry the nano-TiO of boron modification2Composite photo-catalyst;
(6) load boron modification nano-TiO2Bamboo charcoal fiber be respectively added in asphalt according to different addition quantity, according to matching Composition and division in a proportion design determining gradation and asphalt content prepare asphalt;
(7) the automobile exhaust degrading test macro for using independent research is detected respectively, is evaluated to tail hydrocarbon in gas, nitrogen Oxygen compound, carbon monoxide, carbon dioxide four kinds of main components catalytic degradation effect, determine bamboo charcoal fiber load boron modification Nano-TiO2The optimum mix amount of composite photo-catalyst prepares catalytic degradation vehicle exhaust type asphalt.
CN201810957241.3A 2018-08-16 2018-08-16 A kind of catalytic degradation vehicle exhaust type asphalt preparation method Pending CN108889340A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111689719A (en) * 2020-06-19 2020-09-22 广东水电二局股份有限公司 Basalt fiber reinforced asphalt concrete and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101537355A (en) * 2009-02-27 2009-09-23 四川农业大学 Activated carbon fiber-loaded iron doped titanium dioxide photocatalyst and preparation method thereof
CN104923206A (en) * 2015-06-11 2015-09-23 天津科技大学 Composite photocatalyst used for degrading formaldehyde gas and preparation method of wood activated carbon fiber photocatalytic composite material for carrying composite photocatalyst
CN105126924A (en) * 2015-09-14 2015-12-09 南京林业大学 Preparation method of light-weight asphalt mixture with photocatalytic degradation function
CN105170083A (en) * 2015-09-14 2015-12-23 南京林业大学 Method for improving degrading effect of asphalt road for automobile exhaust by utilizing activated carbon adsorbability
KR101862989B1 (en) * 2017-04-28 2018-05-30 울산대학교 산학협력단 Photocatalyst containing active carbon fiber dispersed with titanium dioxde, and water treatment method using the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101537355A (en) * 2009-02-27 2009-09-23 四川农业大学 Activated carbon fiber-loaded iron doped titanium dioxide photocatalyst and preparation method thereof
CN104923206A (en) * 2015-06-11 2015-09-23 天津科技大学 Composite photocatalyst used for degrading formaldehyde gas and preparation method of wood activated carbon fiber photocatalytic composite material for carrying composite photocatalyst
CN105126924A (en) * 2015-09-14 2015-12-09 南京林业大学 Preparation method of light-weight asphalt mixture with photocatalytic degradation function
CN105170083A (en) * 2015-09-14 2015-12-23 南京林业大学 Method for improving degrading effect of asphalt road for automobile exhaust by utilizing activated carbon adsorbability
KR101862989B1 (en) * 2017-04-28 2018-05-30 울산대학교 산학협력단 Photocatalyst containing active carbon fiber dispersed with titanium dioxde, and water treatment method using the same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111689719A (en) * 2020-06-19 2020-09-22 广东水电二局股份有限公司 Basalt fiber reinforced asphalt concrete and preparation method thereof

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Application publication date: 20181127