CN106563467A - Integral purifying material for eliminating carbon monoxide in environmental air and preparation and application - Google Patents

Integral purifying material for eliminating carbon monoxide in environmental air and preparation and application Download PDF

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Publication number
CN106563467A
CN106563467A CN201610989574.5A CN201610989574A CN106563467A CN 106563467 A CN106563467 A CN 106563467A CN 201610989574 A CN201610989574 A CN 201610989574A CN 106563467 A CN106563467 A CN 106563467A
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carbon monoxide
cordierite honeycomb
honeycomb ceramic
preparation
scavenging material
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CN106563467B (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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    • 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
    • B01J23/8926—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 & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

The invention relates to an integral purifying material for eliminating carbon monoxide in environmental air and preparation and application. The preparation comprises the steps: by taking Pd and Cu as active ingredients and a cordierite honeycomb ceramic containing a transitional metal element coating as a carrier, adding pseudo-boehmite, gamma-Al2O3 powder, isopropanol and a transitional element nitrate into deionized water, adding nitric acid to adjust the pH value to 3-4, immersing the cordierite honeycomb ceramic carrier in slurry, and blowing, airing, drying and roasting the carrier; and dissolving PdCl2 and CuCl2 in an ammonia water solution, immersing the cordierite honeycomb ceramic coated with the transitional metal element coating in the solution, drying an integral catalyst at 30-80 DEG C after the solution is fully absorbed, and then roasting the ceramic 2-8 hours at 200-500 DEG C. The purifying material is high in mechanical strength, simple in preparation method and high in utilization ratio of noble metals and can satisfy the actual construction requirements. The purifying material can be used for eliminating carbon monoxide in the environment.

Description

It is a kind of for eliminating surrounding air in carbon monoxide monoblock type scavenging material and preparation And application
Technical field
The present invention relates to it is a kind of for eliminating surrounding air in carbon monoxide monoblock type scavenging material and preparation method thereof, Belong to environmental pollution process for comprehensively treating field.The scavenging material can be used for the elimination of carbon monoxide in environment.
Background technology
Carbon monoxide in environment is mainly derived from motor vehicle, and in the waste gas that motor vehicle is discharged, 70% or so is an oxidation Carbon.The discharge of motor vehicle exhaust gases is relevant with speed, and speed is bigger, and the discharge capacity of carbon monoxide is less.With automobile pollution Continuous rising, traffic also increasingly congestion, the average passage rate of motor vehicle is also increasingly slower, the carbon monoxide of vehicular emission Also it is more and more.Issued according to Environmental Protection Department《Chinese Motor Vehicle Pollution Prevention annual report in 2015》Show, China has connected It is continuous to become within 6 years the first big country of motor vehicle production and marketing of the world.2014,4547.3 ten thousand tons of national motor vehicle emission pollutant, wherein Carbonoxide reaches 3433.7 ten thousand tons.The presence of CO in environment has very big harmfulness, and it can be tied with the hemoglobin of human body Close, weaken the oxygen carrying capacity of hemoglobin, so as to damage the central nervous system of people.
The CO removing methods for most commonly using at present are to use three-way catalyst.Three-way catalyst for vehicle exhaust is Conventional integral catalyzer, with precious metals pd, Pt, Rh as active component, rare earth oxide is co-catalyst, and cordierite is One carrier, activated alumina is Second support（Active coating）.Three-way catalyst at high temperature can be by CO, NOx, HC oxidation also It is former into CO2、N2、H2O, causes non-pollution discharge.But three way catalyst activity is poor under normal temperature, it is impossible to which environment CO is purified. And No. 5 gas defence tanks of CO types can only be used for personal breathing, and service life is shorter, relatively costly, and correlation technique cannot be used In administering to surrounding air.
The content of the invention
To overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of be used to eliminate an oxidation in surrounding air Monoblock type scavenging material of carbon and its preparation method and application.
For achieving the above object, the technology path of catalyst of the present invention is：
It is a kind of for eliminating surrounding air in carbon monoxide monoblock type scavenging material preparation method, it is characterised in that with Pd, Cu is active component, to coat a kind of cordierite honeycomb ceramic containing transition metal coating as carrier, specifically include as Lower step：
（1）By boehmite, γ-Al2O3Powder, isopropanol, transition metal nitrate are added in deionized water, stirring bar Add nitre acid for adjusting pH value to 3-4 under part, continuation stirring 10-60 minutes form slurry, cordierite honeycomb ceramic carrier is soaked In the slurry 1-15 minutes, high pressure air rifle purging, dries after taking-up, in 30～80 DEG C of drying, then in 200 ~ 800 DEG C of Muffle furnaces Middle roasting 4h；
（2）By PdCl2And CuCl2In being dissolved in ammonia spirit, the cordierite honeycomb for being coated with transition metal coating is made pottery Porcelain impregnates in the solution, after solution is fully absorbed, by integral catalyzer in 30～80 DEG C of drying, then at 200 ~ 500 DEG C Roasting 2 ~ 8 hours.
Content of active component Pd in integral catalyzer is 1.0 ~ 3.0 g/L, Cu containing in integral catalyzer Measure as 2.0 ~ 10 g/L.
Transition metal is 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 surrounding air in carbon monoxide monoblock type scavenging material, it is characterised in that according to above-mentioned One methods described is prepared.
It is a kind of for eliminating surrounding air in carbon monoxide monoblock type scavenging material eliminate surrounding air in an oxidation The application of carbon.
It is according to the present invention it is a kind of for eliminating surrounding air in carbon monoxide monoblock type scavenging material and its preparation side Method, with Pd, Cu as active component, contents 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 coating as carrier, coating Middle transition metal is one or more of Fe, Co, Ni.Coating load amount accounts for the mass percent in cordierite honeycomb ceramic For 5 ~ 20%.Specifically include following steps：By boehmite, γ-Al2O3Powder, isopropanol, transition metal nitrate are added to In deionized water, add nitre acid for adjusting pH value to 3-4 under stirring condition, continuation stirring 10-60 minutes form slurry.By cordierite Honeycomb ceramic carrier soaks 1-15 minutes in the slurry, and high pressure air rifle purging, dries after taking-up, dries at 30～80 DEG C, then In 200 ~ 800 DEG C of Muffle kiln roasting 4h.By PdCl2And CuCl2In being dissolved in ammonia spirit, being coated with transition metal The cordierite honeycomb ceramic of coating impregnates in the solution, after solution is fully absorbed, by integral catalyzer in 30～80 DEG C of bakings It is dry, then in 200 ~ 500 DEG C of roastings 2 ~ 8 hours, obtain carbon monoxide monoblock type scavenging material.
The substantive features that the present invention has are：
Scavenging material can be purified effectively at normal temperatures to the CO in environment, and purification efficiency is high.Scavenging material adopts monoblock type Cellular material meets practice of construction requirement as carrier, high mechanical strength；Oxidation of interim metal is distributed in the coating more Plus uniform, better assistance active component carbon monoxide oxidation, further increase the purifying property of scavenging material；Using Equi-volume impregnating prepares integral catalyzer, and preparation method is simple, and noble metal utilisation is high, consumption is low, is easy to extensive work Industry is used.The scavenging material high mechanical strength, preparation method are simple, noble metal utilisation is high, can meet practice of construction requirement. The scavenging material can be used for the elimination of carbon monoxide in environment.
Specific embodiment
Embodiments of the invention are elaborated below：The present embodiment is carried out under premised on technical solution of the present invention Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following enforcements Example.
Comparative example
By 10g γ-Al2O3Powder, 40g boehmites and 1.5g isopropanols are added in 50g deionized waters, stirring condition Lower addition nitre acid for adjusting pH value continues to stir 20 minutes formation coating materials to 3-4；Cordierite honeycomb ceramic carrier is immersed in 5 minutes in coating material, high pressure air rifle purging, dries after taking-up, in 50 DEG C of drying, then in 550 DEG C of Muffle kiln roasting 4h.
By 0.52 g PdCl2With 1.67 g CuCl2In being dissolved in the ammoniacal liquor that 20mL mass fractions are 20%, wait to be completely dissolved Afterwards, the cordierite honeycomb ceramic carrier of above-mentioned coating active coating is immersed in solution, after solution is fully absorbed, will be overall Formula catalyst is dried at 50 DEG C, finally in 300 DEG C of Muffle kiln roasting 4h.Wherein the load capacity of Pd be 2.5g/L, the load of Cu Measure as 5g/L.
The integral catalyzer that this comparative example is prepared is in atmospheric fixed bed U-shaped reactor（Internal diameter is 11 mm）In enter Row performance evaluation, reaction temperature is 30 DEG C, and CO concentration is 30 ppm, and remaining is air, and air speed is 24000 h-1, using an oxidation Carbon analyzer（Thermo, Model 48i）Product analysis are carried out, catalysis of the integral catalyzer obtained in this comparative example to CO is imitated Rate is 87.1%.
Embodiment 1
By 10g γ-Al2O3Powder, 40g boehmites, 1.5g isopropanols and 5g bismuth nitrates are added in 50g deionized waters, Nitre acid for adjusting pH value is slowly added under stirring condition to 3-4, continues to stir 20 minutes formation coating materials；Cordierite honeycomb is made pottery Ceramic carrier is immersed in 5 minutes in coating material, and high pressure air rifle purging, dries after taking-up, in 50 DEG C of drying, then in 550 DEG C of horses Not kiln roasting 4h.Other preparation processes and the same comparative example of method of testing.Test result shows that it is whole that the present embodiment is prepared Body formula catalyst is 97.0% to the catalytic efficiency of CO.
Embodiment 2
Make 5g nitric acid bi content in embodiment 1 into 5g ferric nitrates, remaining preparation method is with embodiment 1.Evaluating catalyst method Same comparative example.Test result shows that the integral catalyzer that the present embodiment is prepared is 93.4% to the catalytic efficiency of CO.
Embodiment 3
Make 5g nitric acid bi content in embodiment 1 into 5g cobalt nitrates, remaining preparation method is with embodiment 1.Evaluating catalyst method Same comparative example.Test result shows that the integral catalyzer that the present embodiment is prepared is 98.4% to the catalytic efficiency of CO.

Claims (5)

1. it is a kind of for eliminating surrounding air in carbon monoxide monoblock type scavenging material preparation method, it is characterised in that with Pd, Cu are active component, to coat a kind of cordierite honeycomb ceramic containing transition metal coating as carrier, are specifically included Following steps：
（1）By boehmite, γ-Al2O3Powder, isopropanol, transition metal nitrate are added in deionized water, stirring bar Add nitre acid for adjusting pH value to 3-4 under part, continuation stirring 10-60 minutes form slurry, cordierite honeycomb ceramic carrier is soaked In the slurry 1-15 minutes, high pressure air rifle purging, dries after taking-up, in 30～80 DEG C of drying, then in 200 ~ 800 DEG C of Muffle furnaces Middle roasting 4h；
（2）By PdCl2And CuCl2In being dissolved in ammonia spirit, the cordierite honeycomb ceramic for being coated with transition metal coating Dipping in the solution, after solution is fully absorbed, by integral catalyzer in 30～80 DEG C of drying, is then roasted at 200 ~ 500 DEG C Burn 2 ~ 8 hours.
2. according to claim 1 it is a kind of for eliminating surrounding air in carbon monoxide monoblock type scavenging material preparation side Method, it is characterised in that content of active component Pd in integral catalyzer is 1.0 ~ 3.0 g/L, and Cu is in integral catalyzer In content be 2.0 ~ 10 g/L.
3. according to claim 1 it is a kind of for eliminating surrounding air in carbon monoxide monoblock type scavenging material preparation side Method, it is characterised in that transition metal is one or more of Fe, Co, Ni in coating, and coating load amount is accounted in cordierite honeybee The mass percent of nest ceramics is 5 ~ 20%.
4. it is a kind of for eliminating surrounding air in carbon monoxide monoblock type scavenging material, it is characterised in that according to claim The arbitrary methods describeds of 1-3 are prepared.
5. the monoblock type scavenging material for being used to eliminate carbon monoxide in surrounding air according to claim 4 is eliminating environment sky 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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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112774677A (en) * 2019-11-01 2021-05-11 丰田自动车株式会社 Method for producing coating layer of exhaust gas purifying 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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4988796A (en) * 1972-12-27 1974-08-24
CN101898137A (en) * 2010-07-22 2010-12-01 华东理工大学 Pd-Cu catalyst for CO low-temperature oxidation and preparation method thereof
CN103170348A (en) * 2011-12-22 2013-06-26 上海纳米技术及应用国家工程研究中心有限公司 Silver-containing normal-temperature monolithic catalyst for carbon monoxide and preparation method thereof
CN104014353A (en) * 2014-05-28 2014-09-03 上海纳米技术及应用国家工程研究中心有限公司 Palladium chloride-cupric chloride catalyst applied to normal-temperature catalytic oxidation of carbon monoxide and preparation
CN104324737A (en) * 2014-11-05 2015-02-04 上海纳米技术及应用国家工程研究中心有限公司 Integral normal-temperature and low-concentration carbonic oxide catalyst as well as preparation and application thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4988796A (en) * 1972-12-27 1974-08-24
CN101898137A (en) * 2010-07-22 2010-12-01 华东理工大学 Pd-Cu catalyst for CO low-temperature oxidation and preparation method thereof
CN103170348A (en) * 2011-12-22 2013-06-26 上海纳米技术及应用国家工程研究中心有限公司 Silver-containing normal-temperature monolithic catalyst for carbon monoxide and preparation method thereof
CN104014353A (en) * 2014-05-28 2014-09-03 上海纳米技术及应用国家工程研究中心有限公司 Palladium chloride-cupric chloride catalyst applied to normal-temperature catalytic oxidation of carbon monoxide and preparation
CN104324737A (en) * 2014-11-05 2015-02-04 上海纳米技术及应用国家工程研究中心有限公司 Integral normal-temperature and low-concentration carbonic oxide catalyst as well as preparation and application thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112774677A (en) * 2019-11-01 2021-05-11 丰田自动车株式会社 Method for producing coating layer of exhaust gas purifying 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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