CN106311271A - Low-concentration oxynitride elimination catalyst, and preparation and application thereof - Google Patents

Low-concentration oxynitride elimination catalyst, and preparation and application thereof Download PDF

Info

Publication number
CN106311271A
CN106311271A CN201610895050.XA CN201610895050A CN106311271A CN 106311271 A CN106311271 A CN 106311271A CN 201610895050 A CN201610895050 A CN 201610895050A CN 106311271 A CN106311271 A CN 106311271A
Authority
CN
China
Prior art keywords
catalyst
modified
concentration
copper
potassium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610895050.XA
Other languages
Chinese (zh)
Other versions
CN106311271B (en
Inventor
宋启军
王婵
李锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangnan University
Original Assignee
Jiangnan University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangnan University filed Critical Jiangnan University
Priority to CN201610895050.XA priority Critical patent/CN106311271B/en
Publication of CN106311271A publication Critical patent/CN106311271A/en
Application granted granted Critical
Publication of CN106311271B publication Critical patent/CN106311271B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B01J23/005—Spinels
    • 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
    • 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
    • B01D53/96—Regeneration, reactivation or recycling of reactants
    • 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
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/889—Manganese, technetium or rhenium
    • B01J23/8892—Manganese

Abstract

The invention discloses a low-concentration oxynitride elimination catalyst, and preparation and application thereof, belonging to the technical field of catalysts. The test shows that the nitrogen monoxide concentration in the gas is less than 10 ppm, and the elimination rate is up to 99%, wherein the service life of the catalyst with the elimination rate of higher than 80% is 8-10 hours. The test indicates that the active temperature range of the catalyst is wider. The product after catalysis is nitrates or nitrites which can be easily recovered and can not generate secondary pollution. The used catalyst can be regenerated by heating, and can be reutilized. The low-concentration oxynitride elimination catalyst is green, and has the characteristics of high elimination rate, low cost and the like.

Description

A kind of low-concentration nitrogen oxide eliminates catalyst and preparation and application thereof
Technical field
The present invention relates to a kind of low-concentration nitrogen oxide and eliminate catalyst and preparation and application thereof, belong to catalyst technology neck Territory.
Background technology
Nitrogen oxides (NOx) is main by NO and NO2Composition.In human body, NO is as intracellular messenger molecule, wide participation Various physiology and the regulation processes of pathology such as regulation of blood vessels, neurotransmission, inflammation and immunoreation.Research finds human body NO excess Time, NO can be by occurring irreversible reaction to generate some derivants with other chemical moleculars, and now NO often has with its derivant Having neurotoxic effect, not only particular organization and organ to body cause damage；DNA is also caused one by the most internal excessive NO Fixed damage.And NO2Having penetrating odor, its toxicity is the biggest, has strong impulse effect to respiratory system, can cause and cough Cough, pant, the ill symptoms such as chest pain, emphysema.
The elimination of NOx is the most necessary for these reasons.It is broadly divided into Direct Resolution about NOx elimination catalyst to urge Agent, selective catalytic reduction catalysts and storage reduction catalyst three class.Direct Resolution catalyst is the most also the most direct Method, but there is serious oxygen inhibition problem in such catalyst, owing to oxygen and the NOx that in mixed atmosphere, itself exists divides After solution, produced oxygen causes catalyst poisoning.And selective catalytic reduction catalysts and storage reduction catalyst are processing NOx Although time the product that obtains also be nitrogen and oxygen, but this process must be added to reproducibility reagent such as ammonia and alkane, this Time contaminative to be introduced gas also increase operating cost.Generate nitrate about NOX oxidation and eliminate urging of NOx harm Agent is mainly with platinum-barium as active component, and owing to platinum is that noble metal relative cost is higher, and it is narrower to be catalyzed active temperature range Etc. reason, transition metal oxide increasingly causes the attention of people.It is reported the manganese cobalt/cobalt oxide after alkali metal treated and Rear-earth-doped manganese composite oxide improves nitric oxide production conversion ratio, but the product after processing is nitrogen dioxide, still The mankind and environment are worked the mischief.Also have some transition metal oxides nitrogen oxides catalysis can be reduced to innoxious nitrogen And water, but this course of reaction must add reducing agent such as ammonia, and in the reaction atmosphere simultaneously such as alkane or carbamide, oxygen concentration is wanted Relatively lower than oxygen concentration in ambient air, this processing scheme does not only have the danger of gas leakage and also add processing cost etc.. Recently report national standard method is active higher, and the advantages such as cost is inexpensive are widely used at the oxidoreduction of nitrogen oxides Reason.Owing to national standard method is to also generating nitrogen dioxide after nitric oxide pretreatment, remain atmosphere pollution.
Therefore, can be directly how nitrate by conversion of nitrogen oxides under the conditions of high oxygen concentration, and then eliminate nitrogen oxygen The harm of compound, is current problem demanding prompt solution.
Summary of the invention
In view of the harm of above-mentioned low-concentration nitrogen oxide, the invention provides a kind of low-concentration nitrogen oxide and eliminate catalyst And preparation and application method, to solve to administer operating cost present in nitrous oxides exhaust gas technology high, secondary pollution etc. Problem.The present invention uses alkali metal or alkali-earth metal modified national standard method, finds that national standard method after modified is to low dense The nitrogen oxides pretreatment of degree, not only can effectively eliminate nitrogen oxides, and elimination factor is up to 99%, and product is nitric acid Salt or nitrite non-secondary pollution.The present invention has green, efficiently, and the advantage such as low cost.
First purpose of the present invention is to provide a kind of alkali metal or alkali-earth metal modified copper Mn catalyst, described catalyst It is prepared as follows and obtains: (1), by soluble in water to a certain amount of mantoquita and manganese salt, it is certain density heavy to be slowly added into In the agent solution of shallow lake, solution precipitation completely, continues stirring a period of time；(2) suspension that obtains is still aging, centrifugation obtains To precipitated product, wash, be dried, be then placed in Muffle kiln roasting, prepare copper Mn catalyst；(3) alkali metal or alkaline earth are used The salt solution impregnation of metal processes the copper Mn catalyst that step (2) obtains, and dries, it is thus achieved that alkali metal salt or alkali-earth metal modified copper Mn catalyst.
In one embodiment of the invention, described alkali metal or alkaline-earth metal include: potassium, sodium, lithium, calcium, barium.
In one embodiment of the invention, described mantoquita is following any one or two or more combination: nitric acid The hydrate of copper, copper chloride, Schweinfurt green, copper sulfate or above-mentioned substance.
In one embodiment of the invention, described manganese salt is following any one or two or more combination: nitric acid The hydrate of manganese, manganese acetate, manganese chloride, manganese sulfate or above-mentioned substance.
In one embodiment of the invention, copper ion, the mol ratio of manganese ion are 0.5-2.0.
In one embodiment of the invention, the concentration after mantoquita is soluble in water is 0.1mol/L.
In one embodiment of the invention, described precipitant can be ammonia, Tetramethylammonium hydroxide, hydroxide Sodium, potassium hydroxide etc..
In one embodiment of the invention, described precipitant is Tetramethylammonium hydroxide.
In one embodiment of the invention, in described precipitant solution, the concentration of precipitant is 0.8-1.2mol/L.
In one embodiment of the invention, the roasting of described step (2) is to put into 300-500 DEG C of roasting in Muffle furnace 4-6 hour.
In one embodiment of the invention, the roasting of described step (2) is that to put into 400 DEG C of roastings 5 in Muffle furnace little Time.
In one embodiment of the invention, described alkali metal or the saline solution of alkaline-earth metal, including nitrate solution, Carbonate solution, hydroxide solution.
In one embodiment of the invention, in described saline solution, metal salt concentrations is 5%-15% (w/w).
In one embodiment of the invention, described Modified Cu Mn catalyst is potassium Modified Cu Mn catalyst.
In one embodiment of the invention, described alkali metal is potassium, and alkali metal salt is potassium salt.
In one embodiment of the invention, any one during described potassium salt is potassium nitrate, potassium carbonate, potassium hydroxide Or two or more combinations.
In one embodiment of the invention, the drying of described step (3) is to dry at 100-120 DEG C.
In one embodiment of the invention, described catalyst is prepared as follows and obtains: by a certain amount of Mantoquita and manganese salt are soluble in water, are added dropwise to the precipitant solution of 0.8-1.2mol/L under stirring at normal temperature, make solution precipitate Completely, continue to stir half an hour, the suspension still aging a few hours that then will obtain, be now centrifugally separating to obtain precipitation and produce Thing, puts into after for several times in 100 DEG C of baking ovens through ultra-pure water and absolute ethanol washing and is dried, be then placed in 400 DEG C of roastings 5 in Muffle furnace Hour, prepare copper Mn catalyst.Finally use the above-mentioned national standard method of potassium salt soln impregnation process of 5%-15% (w/w), so After again the oven for drying of 100 DEG C, it is thus achieved that the copper Mn catalyst that potassium is modified.
Second object of the present invention is to provide the application of described Modified Cu Mn catalyst.
Third object of the present invention is to provide a kind of low-concentration nitrogen oxide removing method, is the modification using the present invention Copper manganese urges agent to be catalyzed.
In one embodiment of the invention, the concentration of described nitrogen oxides is less than 10ppm.
In one embodiment of the invention, described nitrogen oxides is NO, NO2Or its mixture.
In one embodiment of the invention, the concentration of described nitrogen oxides is less than 10ppm, and remaining is air balance.
In one embodiment of the invention, described method, is to carry out nitrogen oxidation within the temperature range of 100-350 DEG C Thing eliminates.
In one embodiment of the invention, described catalyst is 40-60 mesh.
In one embodiment of the invention, described catalyst loading is 0.1g-0.30g.
In one embodiment of the invention, described method is to carry out NO_x elimination in atmospheric conditions.
In one embodiment of the invention, described catalyst is nitrate and Asia to the process product of nitrogen oxides Nitrate.
In one embodiment of the invention, described mantoquita is nitrate trihydrate copper, the manganese nitrate that described manganese salt is.
In one embodiment of the invention, described manganese salt concentration soluble in water is 50% (w/w).
In one embodiment of the invention, described method also includes carrying out back used Modified Cu Mn catalyst Receive, live again after heat treated, recycle.
Advantages of the present invention and effect:
(1) the catalyst test active temperature range of the present invention is wider；And catalysis afterproduct is nitrate or nitrite, Easily recovery, non-secondary pollution.
(2) catalyst of the present invention may be used for eliminating high concentration nitrogen oxide, it is also possible to is used for eliminating NITROGEN IN LOW CONCENTRATION oxygen Compound；Owing to the concentration of atmospheric environment NO of people's life is not over ppm level, the catalyst of the present invention is more suitable for processing big compression ring Nitrogen oxides under border；When the present invention tests in gas nitric oxide concentration less than 10ppm, can efficiently remove nitrogen at ambient pressure Oxide, elimination factor is up to 99%, and wherein elimination factor service life more than 80% is 2-3 hour.
(3) used catalyst can be lived again after heated process, can recycle.The present invention has green, elimination factor The features such as height and low cost.
Accompanying drawing explanation
Fig. 1 is that the catalyst prepared by the embodiment of the present invention 1 to 4 is to NO catalytic removal reactivity test figure；
Fig. 2 is that the catalyst prepared by the embodiment of the present invention 1 to 4 is to NOxEliminate reactivity test figure；
Fig. 3 is the desorption test figure to NO of the catalyst prepared by the embodiment of the present invention 5 to 8；Wherein abscissa is temperature, Going out the position description nitric oxide at the peak adsorpting type at catalyst surface is chemisorbed at the peak that 200-300 degree occurs NO, and the NO decomposing generation that the peak gone out more than 500 degree is the nitrate generated.
Specific embodiments
It is presented herein below and the present invention is specifically described.
The preparation of embodiment 1 national standard method and active testing
Weigh respectively a certain amount of nitrate trihydrate copper and manganese nitrate soluble in water (its concentration be respectively 0.1mol/L and 0.2mol/L), this mixed liquor is added dropwise to the tetramethyl ammonium hydroxide solution of 1.0mol/L so that it is precipitate completely, continues to stir Filter after mixing half an hour and still aging 12 hours.Gained precipitate puts into baking through ultra-pure water and absolute ethanol washing after for several times Case is dried 24 hours at 100 DEG C, and then 400 DEG C of roastings 5 hours in Muffle furnace obtain the national standard method catalysis of spinel-type Agent.
Weighing 0.30g granularity is the above-mentioned catalyst of 40-60 purpose, and being placed in internal diameter is 7mm, and the rustless steel of a length of 300mm is anti- Answer in device.This tubular reactor is put into electric furnace and is heated to required temperature, and its temperature is by the K-type thermocouple corrected and AI- 708P intelligent program controller controls.After temperature stabilization, being passed through the NO reaction gas of 7.2ppm, remaining provides for chromatograph air source Pure air, air speed is 140000mL g-1·h-1.Finding that this catalyst can effectively eliminate NO, its elimination factor is along with temperature Rising and increase, but product is NO2。
Embodiment 2 bronze medal Mn catalyst is modified and active testing through 5% potassium hydroxide impregnation process
By national standard method prepared by embodiment 1 after the potassium hydroxide impregnation process of 5%, centrifugation removes supernatant Liquid, puts into the precipitate of gained baking oven and dries at 100 DEG C.
Weighing 0.30g granularity is the above-mentioned catalyst of 40-60 purpose, and being placed in internal diameter is 7mm, and the rustless steel of a length of 300mm is anti- Answer in device.This tubular reactor is put into electric furnace and is heated to required temperature, and its temperature is by the K-type thermocouple corrected and AI- 708P intelligent program controller controls.After temperature stabilization, being passed through the NO reaction gas of 7.2ppm, remaining provides for chromatograph air source Pure air, air speed is 140000mL g-1·h-1.Finding that this catalyst can effectively remove NO, its elimination factor is along with temperature Rising and increase, the conversion ratio of its NO reaches as high as 99.9%, and the conversion ratio of nitrogen oxides is also 99% simultaneously, shows that this is urged NO is catalyzed oxidation and generates nitrate by agent, and does not generate NO2。
Embodiment 3 bronze medal Mn catalyst is modified and active testing through 10% potassium hydroxide impregnation process
By national standard method prepared by embodiment 1 after the potassium hydroxide impregnation process of 10%, centrifugation removes supernatant Liquid, puts into the precipitate of gained baking oven and dries at 100 DEG C.
Weighing 0.30g granularity is the above-mentioned catalyst of 40-60 purpose, and being placed in internal diameter is 7mm, and the rustless steel of a length of 300mm is anti- Answer in device.This tubular reactor is put into electric furnace and is heated to required temperature, and its temperature is by the K-type thermocouple corrected and AI- 708P intelligent program controller controls.After temperature stabilization, being passed through the NO reaction gas of 7.2ppm, remaining provides for chromatograph air source Pure air, air speed is 140000mL g-1·h-1.Find that this catalyst can effectively eliminate nitrogen oxides, its elimination factor with The rising of temperature and increase, generate without nitrogen dioxide simultaneously, and then nitrogen oxides is the most well removed effect.
Embodiment 4 bronze medal Mn catalyst is modified and active testing through 15% potassium hydroxide impregnation process
By the national standard method prepared by embodiment 1 after the potassium hydroxide impregnation process of 15%, in centrifugation removing Clear liquid, puts into the precipitate of gained baking oven and dries at 100 DEG C.
Weighing 0.30g granularity is the above-mentioned catalyst of 40-60 purpose, and being placed in internal diameter is 7mm, and the rustless steel of a length of 300mm is anti- Answer in device.This tubular reactor is put into electric furnace and is heated to required temperature, and its temperature is by the K-type thermocouple corrected and AI- 708P intelligent program controller controls.After temperature stabilization, being passed through the NO reaction gas of 7.2ppm, remaining provides for chromatograph air source Pure air, air speed is 140000mL g-1·h-1.Find that this catalyst also has higher catalysis activity, effectively remove The conversion ratio of nitric oxide nitrogen oxides simultaneously is the highest.
Nitric oxide production desorption is measured by embodiment 5 bronze medal Mn catalyst
By the national standard method prepared by above-described embodiment 1, weigh the catalyst that 0.10g granularity is 40-60 mesh and be placed in interior Footpath is 7mm, in the stainless steel reactor of a length of 300mm.This tubular reactor is put into electric furnace and is heated to required temperature, its Temperature is controlled by the K-type thermocouple corrected and AI-708P intelligent program controller.The pure air prepared initially with air source Purge 1 hour at 300 DEG C, be cooled to absorption nitric oxide and the gaseous mixture half an hour of pure air when 100 DEG C, stop one The supply of nitrogen oxide gas, changes the air purging of cleaning into.Start by 100 DEG C of program liters when detecting nitrogen oxides signal stabilization Temperature is to 680 DEG C, and programming rate is 5 DEG C/min.
Nitric oxide production desorption is measured by embodiment 6 potassium Modified Cu Mn catalyst
By the national standard method prepared by above-described embodiment 2, weigh the catalyst that 0.10g granularity is 40-60 mesh and be placed in interior Footpath is 7mm, in the stainless steel reactor of a length of 300mm.This tubular reactor is put into electric furnace and is heated to required temperature, its Temperature is controlled by the K-type thermocouple corrected and AI-708P intelligent program controller.The pure air prepared initially with air source Purge 1 hour at 300 DEG C, be cooled to absorption nitric oxide and the gaseous mixture half an hour of pure air when 100 DEG C, stop one The supply of nitrogen oxide gas, changes the air purging of cleaning into.Start by 100 DEG C of program liters when detecting nitrogen oxides signal stabilization Temperature is to 680 DEG C, and programming rate is 5 DEG C/min.
Nitric oxide production desorption is measured by embodiment 7 potassium Modified Cu Mn catalyst
By the national standard method prepared by above-described embodiment 3, weigh the catalyst that 0.10g granularity is 40-60 mesh and be placed in interior Footpath is 7mm, in the stainless steel reactor of a length of 300mm.This tubular reactor is put into electric furnace and is heated to required temperature, its Temperature is controlled by the K-type thermocouple corrected and AI-708P intelligent program controller.The pure air prepared initially with air source Purge 1 hour at 300 DEG C, be cooled to absorption nitric oxide and the gaseous mixture half an hour of pure air when 100 DEG C, stop one The supply of nitrogen oxide gas, changes the air purging of cleaning into.Start by 100 DEG C of program liters when detecting nitrogen oxides signal stabilization Temperature is to 680 DEG C, and programming rate is 5 DEG C/min.
Nitric oxide production desorption is measured by embodiment 8 potassium Modified Cu Mn catalyst
By the national standard method prepared by above-described embodiment 4, weigh the catalyst that 0.10g granularity is 40-60 mesh and be placed in interior Footpath is 7mm, in the stainless steel reactor of a length of 300mm.This tubular reactor is put into electric furnace and is heated to required temperature, its Temperature is controlled by the K-type thermocouple corrected and AI-708P intelligent program controller.The pure air prepared initially with air source Purge 1 hour at 300 DEG C, be cooled to absorption nitric oxide and the gaseous mixture half an hour of pure air when 100 DEG C, stop one The supply of nitrogen oxide gas, changes the air purging of cleaning into.Start by 100 DEG C of program liters when detecting nitrogen oxides signal stabilization Temperature is to 680 DEG C, and programming rate is 5 DEG C/min.
Can be shown that national standard method surface is mainly the nitric oxide of chemisorbed by Fig. 3, and through the modified copper manganese of potassium What oxide surface was primarily present is nitrate, and absorption property and the activity after 5% potassium hydroxide treatment is the highest.
Additionally, inventor attempts using the metals such as barium, strontium, sodium, calcium, lithium, Modified Cu Mn oxide obtains in the same way Corresponding Modified Cu Mn catalyst, result shows, these Modified Cu Mn catalysts also can be in the situation being not added with other reducing agents etc. Directly low-concentration nitrogen oxide being converted into nitrate down, conversion ratio is 20%～about 80%.
Although the present invention is open the most as above with preferred embodiment, but it is not limited to the present invention, any is familiar with this skill The people of art, without departing from the spirit and scope of the present invention, can do various changes and modification, therefore the protection model of the present invention Enclosing should be with being as the criterion that claims are defined.

Claims (10)

1. an alkali metal or alkali-earth metal modified copper Mn catalyst, it is characterised in that described catalyst is to make by the following method For obtain: (1), by soluble in water to a certain amount of mantoquita and manganese salt, is slowly added in certain density precipitant solution, molten Liquid precipitate is complete, continues stirring a period of time；(2) suspension that obtains is still aging, it is centrifugally separating to obtain precipitated product, washes Wash, be dried, be then placed in Muffle kiln roasting, prepare copper Mn catalyst；(3) the saline solution leaching of alkali metal or alkaline-earth metal is used Stain processes the copper Mn catalyst that step (2) obtains, and dries, it is thus achieved that alkali metal or alkali-earth metal modified copper Mn catalyst.
Modified Cu Mn catalyst the most according to claim 1, it is characterised in that used in described catalyst preparation process Mantoquita and the amount of manganese salt, meet mol ratio 0.5-2.0 of copper ion, manganese ion.
Modified Cu Mn catalyst the most according to claim 1, it is characterised in that in described precipitant solution, precipitant is dense Degree is 0.8-1.2mol/L.
Modified Cu Mn catalyst the most according to claim 1, it is characterised in that in described saline solution, the quality of slaine is dense Degree is 5%-15%.
Modified Cu Mn catalyst the most according to claim 1, it is characterised in that described alkali metal or alkaline-earth metal are following Any one: potassium, sodium, lithium, calcium, barium.
Modified Cu Mn catalyst the most according to claim 5, it is characterised in that the potassium that described Modified Cu Mn catalyst uses Salt is any one or two or more combination in potassium nitrate, potassium carbonate, potassium hydroxide.
7. the application of the arbitrary described Modified Cu Mn catalyst of claim 1～6.
8. a low-concentration nitrogen oxide removing method, it is characterised in that described method is to utilize the arbitrary institute of claim 1～5 State Modified Cu Mn catalyst to be catalyzed.
Method the most according to claim 8, it is characterised in that the concentration of described nitrogen oxides is less than 10ppm.
Method the most according to claim 8, it is characterised in that described method also includes urging used Modified Cu manganese Agent reclaims, and lives again after heat treated, recycles.
CN201610895050.XA 2016-10-13 2016-10-13 A kind of low-concentration nitrogen oxide eliminates catalyst and its preparation and application Active CN106311271B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610895050.XA CN106311271B (en) 2016-10-13 2016-10-13 A kind of low-concentration nitrogen oxide eliminates catalyst and its preparation and application

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610895050.XA CN106311271B (en) 2016-10-13 2016-10-13 A kind of low-concentration nitrogen oxide eliminates catalyst and its preparation and application

Publications (2)

Publication Number Publication Date
CN106311271A true CN106311271A (en) 2017-01-11
CN106311271B CN106311271B (en) 2019-04-23

Family

ID=57817593

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610895050.XA Active CN106311271B (en) 2016-10-13 2016-10-13 A kind of low-concentration nitrogen oxide eliminates catalyst and its preparation and application

Country Status (1)

Country Link
CN (1) CN106311271B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102553573A (en) * 2011-12-29 2012-07-11 中国科学院过程工程研究所 Nitrogen oxide oxidizing catalyst and preparation method of nitrogen oxide oxidizing catalyst
JP2012245444A (en) * 2011-05-25 2012-12-13 Nippon Steel Corp Method for desulfurizing and denitrating sintering furnace exhaust gas

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012245444A (en) * 2011-05-25 2012-12-13 Nippon Steel Corp Method for desulfurizing and denitrating sintering furnace exhaust gas
CN102553573A (en) * 2011-12-29 2012-07-11 中国科学院过程工程研究所 Nitrogen oxide oxidizing catalyst and preparation method of nitrogen oxide oxidizing catalyst

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
MIN KANG ET AL.: "Cu–Mn mixed oxides for low temperature NO reduction with NH3", 《CATALYSIS TODAY》 *
XIAOLONG TANG ET AL.: "Effect of Potassium-Precursor Promoters on Catalytic Oxidation Activity of Mn-CoOx Catalysts for NO Removal", 《IND. ENG. CHEM. RES.》 *

Also Published As

Publication number Publication date
CN106311271B (en) 2019-04-23

Similar Documents

Publication Publication Date Title
CN109759063B (en) Core-shell type CO oxidation catalyst, and preparation method and application thereof
CN102059127B (en) Catalyst for CO normal temperature catalytic oxidation and preparation method thereof
CN103769053A (en) Preparation method for activated carbon special for removal of low-concentration formaldehyde in room
CN100448529C (en) Ruthenium-based ammonia synthesis catalyst and its preparation method
CN107282068B (en) Copper oxide pillared layered manganese oxide catalyst and preparation method and application thereof
CN106076417A (en) Charcoal base heteropolyacid catalyst and preparation and application method thereof for low-temperature flue gas simultaneous SO_2 and NO removal
CN104475087B (en) Preparation method for denitration catalyst
CN107008327A (en) A kind of low temperature sulfuric-resisting hydrogen ammonium SCR denitration and its preparation method and application
CN104341008B (en) A kind of iron nitrate solution preparation method of low NOx drainage
CN109513339B (en) High-temperature catalytic reduction method for cement kiln flue gas denitration
CN104190410A (en) Method for preparing HCN oxidation catalyst
CN108619887A (en) A kind of exhaust treatment system
CN108786896A (en) A kind of preparation method of noble metal catalyst
CN106311271A (en) Low-concentration oxynitride elimination catalyst, and preparation and application thereof
CN116216717A (en) Preparation method of activated carbon and low-temperature SCR denitration catalyst and flue gas denitration method
CN103480368B (en) A kind of low-carbon (LC) gaseous mixture catalytic combustion deoxygenation catalyst and preparation method thereof
CN113731402A (en) Catalyst and preparation method and application thereof
CN112569940A (en) Preparation method of efficient integral ammonia nitrogen purification ozone catalyst, product and application thereof
CN103055957A (en) Preparation method of supported catalyst
CN104525184A (en) Chrome oxide catalyst used for NO room-temperature catalytic oxidation and preparation method thereof
JP2000042348A (en) Desulfurizing method
CN109174107A (en) A kind of activated carbon loaded iron-out of stock catalyst of cerium-titanium and its preparation method and application
CN107649167A (en) CO oxidation catalysts and preparation method thereof under a kind of steam and carbon dioxide atmosphere
CN114713251B (en) Phosphate modified cerium-based denitration catalyst and preparation method and application thereof
CN113797889B (en) Carbide slag molecular sieve composite adsorbent for purifying hydrogen cyanide and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant