CN106563467B - A kind of monoblock type scavenging material and preparation and application for eliminating carbon monoxide in surrounding air - Google Patents

A kind of monoblock type scavenging material and preparation and application for eliminating carbon monoxide in surrounding air Download PDF

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CN106563467B
CN106563467B CN201610989574.5A CN201610989574A CN106563467B CN 106563467 B CN106563467 B CN 106563467B CN 201610989574 A CN201610989574 A CN 201610989574A CN 106563467 B CN106563467 B CN 106563467B
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carbon monoxide
scavenging material
transition metal
honeycomb ceramic
cordierite honeycomb
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CN106563467A (en
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何丹农
高振源
赵昆峰
杨玲
袁静
蔡婷
张涛
金彩虹
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Shanghai National Engineering Research Center for Nanotechnology Co Ltd
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/8926—Copper and noble metals
    • 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
    • B01D53/864—Removing carbon monoxide or hydrocarbons
    • 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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/8933—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/8973—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony or bismuth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1023—Palladium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20738—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20746—Cobalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20753—Nickel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20761—Copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/209—Other metals
    • B01D2255/2092—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/209—Other metals
    • B01D2255/2096—Bismuth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/502—Carbon monoxide
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Chemical Kinetics & Catalysis (AREA)
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  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

The monoblock type scavenging material and preparation and application that the present invention relates to a kind of for eliminating carbon monoxide in surrounding air.Using Pd, Cu as active component, to coat a kind of cordierite honeycomb ceramic containing transition metal element coating as carrier.By boehmite, γ-Al2O3Powder, isopropanol, transition metal nitrate are add to deionized water, and nitre acid for adjusting pH value is added to 3-4, cordierite honeycomb ceramic carrier is impregnated in the slurry, purging dries drying roasting；By PdCl2And CuCl2It is dissolved in ammonia spirit, in the solution the cordierite honeycomb ceramic dipping for being coated with transition metal element coating, after solution fully absorbs, integral catalyzer is dried at 30~80 DEG C, is then roasted 2 ~ 8 hours at 200 ~ 500 DEG C.The scavenging material high mechanical strength, preparation method is simple, noble metal utilisation is high, is able to satisfy practice of construction requirement.The scavenging material can be used for the elimination of carbon monoxide in environment.

Description

A kind of monoblock type scavenging material and preparation for eliminating carbon monoxide in surrounding air And application
Technical field
The present invention relates to a kind of monoblock type scavenging material and preparation method thereof for eliminating carbon monoxide in surrounding air, Belong to environmental pollution process for comprehensively treating field.The scavenging material can be used for the elimination of carbon monoxide in environment.
Background technique
Carbon monoxide in environment is mainly derived from motor vehicle, and in the exhaust gas of motor vehicle discharge, 70% or so is an oxidation Carbon.The discharge of motor vehicle exhaust gases is related with speed, and speed is bigger, and the discharge amount of carbon monoxide is with regard to smaller.With car ownership Continuous rising, traffic also increasingly congestion, the motor vehicle passage speed that is averaged is also slower and slower, the carbon monoxide of vehicular emission Also more and more.According to " Chinese Motor Vehicle Pollution Prevention annual report in 2015 " display of Environmental Protection Department publication, China has connected Become the first big country of world's motor vehicle production and marketing within continuous 6 years.2014,4547.3 ten thousand tons of national motor vehicle emission pollutant, wherein one Carbonoxide reaches 3433.7 ten thousand tons.The presence of CO has very big harmfulness in environment, it can be with the hemoglobin knot of human body It closes, weakens the oxygen carrying capacity of hemoglobin, to damage the central nervous system of people.
The CO removing method most generally used at present is to use three-way catalyst.Three-way catalyst for vehicle exhaust is Common integral catalyzer, using precious metals pd, Pt, Rh as active component, rare earth oxide is co-catalyst, cordierite One carrier, activated alumina are Second support (active coating).Three-way catalyst at high temperature can aoxidize CO, NOx, HC also Original is at CO2、N2、H2O causes non-pollution discharge.But three way catalyst activity is poor under room temperature, can not purify to environment CO. And No. 5 gas defence tanks of CO type can only be used for personal breathing, and service life is shorter, higher cost, the relevant technologies can not be used Into surrounding air improvement.
Summary of the invention
In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide one kind for eliminating an oxidation in surrounding air Monoblock type scavenging material of carbon and its preparation method and application.
To achieve the above object, the technology path of catalyst of the present invention is:
It is a kind of for eliminating the preparation method of the monoblock type scavenging material of carbon monoxide in surrounding air, which is characterized in that It is specific to wrap to coat a kind of cordierite honeycomb ceramic containing transition metal element coating as carrier using Pd, Cu as active component Include following steps:
(1) by boehmite, γ-Al2O3Powder, isopropanol, transition metal nitrate are add to deionized water, and are stirred Nitre acid for adjusting pH value is added under the conditions of mixing to 3-4, continues to stir 10-60 minutes formation slurries, by cordierite honeycomb ceramic carrier It impregnates 1-15 minutes in the slurry, high pressure air rifle purges after taking-up, dries, and dries at 30~80 DEG C, then in 200 ~ 800 DEG C of horses Not kiln roasting 4h；
(2) by PdCl2And CuCl2It is dissolved in ammonia spirit, the cordierite honeycomb for being coated with transition metal element coating Cerdip in the solution, after solution fully absorbs, integral catalyzer is dried at 30~80 DEG C, then 200 ~ 500 DEG C roasting 2 ~ 8 hours.
Content of the active component Pd in integral catalyzer is 1.0 ~ 3.0 g/L, Cu containing in integral catalyzer Amount is 2.0 ~ 10 g/L.
Transition metal element is the one or more of Fe, Co, Ni in coating, and coating load amount is accounted in cordierite honeycomb ceramic Mass percent be 5 ~ 20%.
It is a kind of for eliminating the monoblock type scavenging material of carbon monoxide in surrounding air, which is characterized in that according to above-mentioned One the method is prepared.
A kind of monoblock type scavenging material oxidation in eliminating surrounding air for eliminating carbon monoxide in surrounding air The application of carbon.
A kind of monoblock type scavenging material and its preparation side for eliminating carbon monoxide in surrounding air of the present invention Method, using Pd, Cu as active component, content of the Pd in integral catalyzer is 1.0 ~ 3.0 g/L, and Cu is in integral catalyzer Content be 2.0 ~ 10 g/L.To coat a kind of cordierite honeycomb ceramic containing transition metal element coating as carrier, coating Middle transition metal element is the one or more of Fe, Co, Ni.Coating load amount accounts for the mass percent in cordierite honeycomb ceramic It is 5 ~ 20%.Specifically comprise the following steps: boehmite, γ-Al2O3Powder, isopropanol, transition metal nitrate are added to Nitre acid for adjusting pH value is added in deionized water, under stirring condition to 3-4, continues to stir 10-60 minutes formation slurries.By cordierite Honeycomb ceramic carrier impregnates 1-15 minutes in the slurry, and high pressure air rifle purges after taking-up, dries, and dries at 30~80 DEG C, then In 200 ~ 800 DEG C of Muffle kiln roasting 4h.By PdCl2And CuCl2It is dissolved in ammonia spirit, coated with transition metal element In the solution, after solution fully absorbs, integral catalyzer is dried at 30~80 DEG C for the cordierite honeycomb ceramic dipping of coating It is dry, it is then roasted 2 ~ 8 hours at 200 ~ 500 DEG C, obtains carbon monoxide monoblock type scavenging material.
The substantive features that the present invention has are:
Scavenging material at normal temperature can effectively purify the CO in environment, and purification efficiency is high.Scavenging material is using whole Body formula cellular material meets practice of construction requirement as carrier, high mechanical strength；Oxidation of interim metal divides in the coating Cloth is more uniform, and better assistance active component carbon monoxide oxidation further improves the purifying property of scavenging material； Integral catalyzer is prepared using equi-volume impregnating, preparation method is simple, and noble metal utilisation is high, dosage is low, convenient for big rule Mould industrial use.The scavenging material high mechanical strength, preparation method is simple, noble metal utilisation is high, is able to satisfy practice of construction It is required that.The scavenging material can be used for the elimination of carbon monoxide in environment.
Specific embodiment
Elaborate below to the embodiment of the present invention: the present embodiment carries out under the premise of the technical scheme of the present invention Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation Example.
Comparative example
By 10g γ-Al2O3Powder, 40g boehmite and 1.5g isopropanol are added in 50g deionized water, stirring bar Nitre acid for adjusting pH value is added under part to 3-4, continues to stir 20 minutes formation coating materials；Cordierite honeycomb ceramic carrier is impregnated 5 minutes in coating material, high pressure air rifle is purged after taking-up, is dried, and is dried at 50 DEG C, then in 550 DEG C of Muffle kiln roastings 4h。
By 0.52 g PdCl2With 1.67 g CuCl2It is dissolved in the ammonium hydroxide that 20mL mass fraction is 20%, wait be completely dissolved Afterwards, the cordierite honeycomb ceramic carrier of above-mentioned coating active coating is immersed in solution, it, will be whole after solution fully absorbs Formula catalyst is dried at 50 DEG C, finally in 300 DEG C of Muffle kiln roasting 4h.Wherein the load capacity of Pd is 2.5g/L, the load of Cu Amount is 5g/L.
The integral catalyzer that this comparative example is prepared in atmospheric fixed bed U-shaped reactor (internal diameter is 11 mm) into Row performance evaluation, reaction temperature are 30 DEG C, and CO concentration is 30 ppm, remaining is air, and air speed is 24000 h-1, use an oxidation Carbon analyzer (Thermo, Model 48i) carries out product analysis, and integral catalyzer made from this comparative example imitates the catalysis of CO Rate is 87.1%.
Embodiment 1
By 10g γ-Al2O3Powder, 40g boehmite, 1.5g isopropanol and 5g bismuth nitrate are added to 50g deionized water In, it is slowly added to nitre acid for adjusting pH value under stirring condition to 3-4, continues to stir 20 minutes formation coating materials；By cordierite bee Nest ceramic monolith is immersed in coating material 5 minutes, and high pressure air rifle purges after taking-up, is dried, and is dried at 50 DEG C, then 550 DEG C Muffle kiln roasting 4h.Other preparation steps and the same comparative example of test method.Test result shows that the present embodiment is prepared Integral catalyzer be 97.0% to the catalytic efficiency of CO.
Embodiment 2
5g nitric acid bi content in embodiment 1 is changed to 5g ferric nitrate, the preparation method is the same as that of Example 1 for remaining.Evaluating catalyst The same comparative example of method.Test result shows that the integral catalyzer that the present embodiment is prepared is to the catalytic efficiency of CO 93.4%。
Embodiment 3
5g nitric acid bi content in embodiment 1 is changed to 5g cobalt nitrate, the preparation method is the same as that of Example 1 for remaining.Evaluating catalyst The same comparative example of method.Test result shows that the integral catalyzer that the present embodiment is prepared is to the catalytic efficiency of CO 98.4%。

Claims (3)

1. a kind of for eliminating the preparation method of the monoblock type scavenging material of carbon monoxide in surrounding air, which is characterized in that with Pd, Cu are that active component is specifically included using coating a kind of cordierite honeycomb ceramic containing transition metal element coating as carrier Following steps:
(1) by boehmite, γ-Al2O3Powder, isopropanol, transition metal nitrate are add to deionized water, stirring bar Nitre acid for adjusting pH value is added under part to 3-4, continues to stir 10-60 minutes formation slurries, cordierite honeycomb ceramic carrier is impregnated 1-15 minutes in the slurry, high pressure air rifle purged after taking-up, dried, and dried at 30~80 DEG C, then in 200 ~ 800 DEG C of Muffle furnaces Middle roasting 4h；
(2) by PdCl2And CuCl2It is dissolved in ammonia spirit, the cordierite honeycomb ceramic for being coated with transition metal element coating Dipping in the solution, after solution fully absorbs, integral catalyzer is dried at 30~80 DEG C, is then roasted at 200 ~ 500 DEG C It burns 2 ~ 8 hours；
Content of the active component Pd in integral catalyzer is 1.0 ~ 3.0 g/L, and content of the Cu in integral catalyzer is 2.0~10 g/L；
Transition metal element is the one or more of Fe, Co, Ni in coating, and coating load amount accounts for the matter in cordierite honeycomb ceramic Measuring percentage is 5 ~ 20%.
2. a kind of for eliminating the monoblock type scavenging material of carbon monoxide in surrounding air, which is characterized in that according to claim 1 The method is prepared.
3. eliminating environment sky for eliminating the monoblock type scavenging material of carbon monoxide in surrounding air according to claim 2 The application of carbon monoxide in gas.
CN201610989574.5A 2016-11-10 2016-11-10 A kind of monoblock type scavenging material and preparation and application for eliminating carbon monoxide in surrounding air Active CN106563467B (en)

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JP2021070004A (en) * 2019-11-01 2021-05-06 トヨタ自動車株式会社 Method for producing coating layer for exhaust gas purification catalyst device
CN116116431A (en) * 2023-01-03 2023-05-16 万华化学集团股份有限公司 Pd-Cu-X monolithic catalyst and preparation method and application thereof

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