CN106563446A - Light carrier catalyst for catalytically eliminating nitric oxide and preparation and application thereof - Google Patents

Light carrier catalyst for catalytically eliminating nitric oxide and preparation and application thereof Download PDF

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Publication number
CN106563446A
CN106563446A CN201610989909.3A CN201610989909A CN106563446A CN 106563446 A CN106563446 A CN 106563446A CN 201610989909 A CN201610989909 A CN 201610989909A CN 106563446 A CN106563446 A CN 106563446A
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China
Prior art keywords
light carrier
catalyst
styrene
nitric oxide
preparation
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CN201610989909.3A
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Chinese (zh)
Inventor
何丹农
张涛
赵昆峰
高振源
杨玲
袁静
蔡婷
金彩虹
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Shanghai National Engineering Research Center for Nanotechnology Co Ltd
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Shanghai National Engineering Research Center for Nanotechnology Co Ltd
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Priority to CN201610989909.3A priority Critical patent/CN106563446A/en
Publication of CN106563446A publication Critical patent/CN106563446A/en
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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
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/32—Manganese, technetium or rhenium
    • B01J23/34—Manganese
    • 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
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8628—Processes characterised by a specific catalyst
    • 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
    • B01D2255/2073—Manganese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)

Abstract

The invention relates to a light carrier catalyst for catalytically eliminating nitric oxide and preparation and application thereof. The preparation comprises the steps: loading active manganese oxide to a light carrier by using a macromolecular adhesive, wherein a fluorine-modified styrene-acrylic emulsion which is relatively high in activity is composed of styrene, polymethyl acrylate, acrylic acid, a non-ionic fluorine-containing emulsifier, protective glue, tertiary butanol and isopropanol and deionized water; preparing the fluorine-modified styrene-acrylic emulsion by taking potassium persulfate as an initiator; and dispersing the active manganese oxide in water, then adding the styrene-acrylic emulsion to obtain active manganese oxide slurry, uniformly coating the active manganese oxide slurry to the light carrier, putting the carrier in an oven at 40 DEG C to be dried 12h to obtain the light carrier loaded catalyst. The light carrier loaded catalyst prepared by the method has a relatively good ability of normal temperature catalytic oxidation of NO, the initial conversion ratio of the catalyst can reach 90%, and the catalyst has a relatively long service life and is suitable for normal temperature catalytic oxidation of low concentration NO.

Description

A kind of light carrier catalyst for nitric oxide catalytic removal and its prepare and Using
Technical field
The present invention relates to catalyst and preparation and application, more particularly, to a kind of lightweight for nitric oxide catalytic removal Carried catalyst and preparation and application.
Background technology
Nitrogen oxides（NOx）It is the Air Pollutants to form nitric acid type acid rain and photochemical fog, damage the ozone layer One of, with very strong toxicity.The hemi-closure spaces such as tunnel, parking lot are restricted due to gravity-flow ventilation, vehicular emission Tail gas cannot be discharged in time, nitrogen oxides（NOx）Accumulation, air pollution is serious.Wherein, nitric oxide（NO）Account for NOx total amounts 90%-95%, NO effectively remove purification and are particularly important.The integrated catalyst carrier commonly used in engineering is cellular violet Cordierite material, but its price high-quality is big, is unfavorable for the popularization of room temperature Treatment process.For an above-mentioned engineering difficult problem, this is specially Profit proposes a kind of preparation method of new catalyst slurry, and the slurry is applied to the light carriers such as polypropylene plastics, paperboard, should Integral catalyzer prepared by method has lightweight, and catalyst comes off few, effectively reduces the cost of integral catalyzer, has Beneficial to room temperature Treatment process hemi-closure space application.
Patent CN 102585109 A, CN 103923271 the A and A of CN 102702437 disclose one kind and prepare phenylpropyl alcohol The method of emulsion.Styrene-acrylic emulsion emulsion is widely used in the fields such as cathode slurry as a kind of important polymeric adhesive, but Commonly the resistance to water and weatherability of styrene-acrylic emulsion are poor, strength of coating is low, film-forming temperature is high, need to add when being usually used Various auxiliary agents.For the problems referred to above, the present invention adopts the styrene-acrylic emulsion emulsion of fluorine richness, so as to avoid the preparation in slurry Add auxiliary agent, technological process to be simplified in journey, be conducive to the popularization of the method.
The catalyst of light carrier load prepared by the method has the ability of higher NO room-temperature catalytic oxidations, and its is initial Conversion ratio can reach 90%, and with the longer life-span, it is adaptable to the NO room-temperature catalytic oxidations of low concentration.
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 for the light of nitric oxide catalytic removal Matter carried catalyst and preparation and application.
A kind of preparation method of the light carrier catalyst for nitric oxide catalytic removal, it is characterised in that using high Molecular binder loads to activity oxidation manganese on light carrier, with higher activity, comprises the following steps：
（1）The preparation of slurry
A kind of styrene-acrylic emulsion of fluorine richness, by following weight into being grouped into：10% styrene, 12% polymethyl acrylate, 6% the third Olefin(e) acid, 0.6% nonionic fluorine-containing emulsifier, 0.4% Protection glue be aerosil, 6% tert-butyl alcohol and isopropanol, 65% go from Sub- water；Appropriate potassium peroxydisulfate is adopted for initiator, polymeric reaction temperature control is incubated 2 ~ 5 hours at 60-85 DEG C, uses ammonia The pH values of dispersion liquid are reconciled to neutrality, the styrene-acrylic emulsion of fluorine richness is obtained；
（2）2g activity oxidation manganeses are distributed in 8ml water, 1ml styrene-acrylic emulsions are subsequently adding, stirring at normal temperature 3h obtains active oxygen Change manganese slurry, activity oxidation manganese slurry is evenly applied on light carrier, be put in 40 DEG C of baking ovens and dry 12h, obtain lightweight Carrier loaded catalyst.
A kind of light carrier catalyst for nitric oxide catalytic removal, it is characterised in that according to method described above Prepare.
A kind of application of light carrier catalyst of nitric oxide catalytic removal in nitric oxide catalytic removal.
The chloride hydrate manganese of 14.2g tetra- is added into 240ml deionized water stirring at normal temperature 1h, solution 1 is obtained；7.6g potassium permanganate 240 ml deionized waters stirring at normal temperature 1h are added to obtain solution 2；Solution 1 is dropwise instilled in solution 2, stirring at normal temperature 4h；Washing, Filter, by product 50oDry under C, obtain activity oxidation manganese.
Activity oxidation manganese is distributed in deionized water, modified high polymer binder is subsequently adding, stirring at normal temperature 3h is obtained Obtain activity oxidation manganese slurry.
Activity oxidation manganese slurry is evenly applied on light carrier, 40 are put intoo12h is dried in C baking ovens, lightweight is obtained and is carried The catalyst of body load.
The present invention adds auxiliary agent, work so as to avoid using modified styrene-acrylic emulsion emulsion in the preparation process of slurry Skill flow process is simplified, and is conducive to the popularization of the method.The catalyst of light carrier load prepared by the method has higher The ability of NO room-temperature catalytic oxidations, its initial conversion can reach 90%, and with the longer life-span, it is adaptable to low concentration NO room-temperature catalytic oxidations.
Specific embodiment
Oxidation manganio catalysis material is supported to light carrier of the invention carries out the test that room temperature removes low concentration of NO.Test Method can be：Oxygen-containing NO waste gas is passed through in the reactor, and described oxygen-containing NO waste gas includes NO, N2And O2, with oxygen-containing NO waste gas In O2For oxidant, in room temperature（30℃±5℃）Under the conditions of by NO catalytic oxidative desulfurizations.Wherein, described oxygen-containing NO waste gas Middle O2Content is～10ppm for the content of～21%, NO, and remaining is N2.The consumption of active oxidation manganio catalysis material is 0.4g.
Embodiment 1
2g activity oxidation manganeses are distributed in 8ml water, 1ml styrene-acrylic emulsions are subsequently adding, stirring at normal temperature 3h obtains activity oxidation manganese Slurry, activity oxidation manganese slurry is evenly applied on light carrier, is put into 40o12h is dried in C baking ovens, light carrier is obtained The catalyst of load, is designated as No. 1 sample.In the test that room temperature removes low concentration of NO, the initial conversion of No. 1 sample is 90%, Life-span（I.e. activity is reduced to 50%）For 7h.
Embodiment 2
2g activity oxidation manganeses are distributed in 6ml water, 2ml styrene-acrylic emulsions are subsequently adding, stirring at normal temperature 3h obtains activity oxidation manganese Slurry, activity oxidation manganese slurry is evenly applied on light carrier, is put into 40o12h is dried in C baking ovens, light carrier is obtained The catalyst of load, is designated as No. 2 samples.In the test that room temperature removes low concentration of NO, the initial conversion of No. 2 samples is 60%, Life-span（I.e. activity is reduced to 50%）For 1h.
Embodiment 3
2g activity oxidation manganeses are distributed in 4ml water, 2ml emulsions are subsequently adding, stirring at normal temperature 3h obtains activity oxidation manganese slurry Material, activity oxidation manganese slurry is evenly applied on light carrier, is put into 40o12h is dried in C baking ovens, light carrier is obtained and is born The catalyst of load, is designated as No. 3 samples.In the test that room temperature removes low concentration of NO, the initial conversion of No. 3 samples is 30%.

Claims (3)

1. a kind of preparation method of the light carrier catalyst for nitric oxide catalytic removal, it is characterised in that utilize high score Sub- binding agent loads to activity oxidation manganese on light carrier, with higher activity, comprises the following steps：
（1）The preparation of slurry
A kind of styrene-acrylic emulsion of fluorine richness, by following weight into being grouped into：10% styrene, 12% polymethyl acrylate, 6% the third Olefin(e) acid, 0.6% nonionic fluorine-containing emulsifier, 0.4% Protection glue be aerosil, 6% tert-butyl alcohol and isopropanol, 65% go from Sub- water；Appropriate potassium peroxydisulfate is adopted for initiator, polymeric reaction temperature control is incubated 2 ~ 5 hours at 60-85 DEG C, uses ammonia The pH values of dispersion liquid are reconciled to neutrality, the styrene-acrylic emulsion of fluorine richness is obtained；
（2）2g activity oxidation manganeses are distributed in 8ml water, 1ml styrene-acrylic emulsions are subsequently adding, stirring at normal temperature 3h obtains active oxygen Change manganese slurry, activity oxidation manganese slurry is evenly applied on light carrier, be put in 40 DEG C of baking ovens and dry 12h, obtain lightweight Carrier loaded catalyst.
2. a kind of light carrier catalyst for nitric oxide catalytic removal, it is characterised in that according to the institute of claim 1 or 2 The method of stating is prepared.
3. according to claim 2 the light carrier catalyst of nitric oxide catalytic removal nitric oxide catalytic removal should With.
CN201610989909.3A 2016-11-10 2016-11-10 Light carrier catalyst for catalytically eliminating nitric oxide and preparation and application thereof Pending CN106563446A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116637614A (en) * 2023-05-10 2023-08-25 安徽工业大学 Cerium-manganese-based denitration catalyst with high alkali resistance, and preparation method and application thereof

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CN105435819A (en) * 2016-01-06 2016-03-30 武汉理工大学 Method for loading MnOx-F doped TiO2 active component on cordierite and prepared MnOx-F doped TiO2-cordierite composite catalyst
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CN105688902A (en) * 2016-03-07 2016-06-22 江苏晶晶新材料有限公司 Preparation method of novel efficient automobile exhaust purification catalyst
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116637614A (en) * 2023-05-10 2023-08-25 安徽工业大学 Cerium-manganese-based denitration catalyst with high alkali resistance, and preparation method and application thereof

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