CN105536797A - Supported type red mud catalyst for flue gas denitrification and preparation method thereof - Google Patents
Supported type red mud catalyst for flue gas denitrification and preparation method thereof Download PDFInfo
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- 239000003054 catalyst Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title description 4
- 239000003546 flue gas Substances 0.000 title description 4
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000005751 Copper oxide Substances 0.000 claims abstract description 16
- 229910000431 copper oxide Inorganic materials 0.000 claims abstract description 16
- 238000010531 catalytic reduction reaction Methods 0.000 claims abstract description 3
- 239000006185 dispersion Substances 0.000 claims abstract 2
- 229960004643 cupric oxide Drugs 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 10
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 7
- 239000012498 ultrapure water Substances 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 5
- 230000003197 catalytic effect Effects 0.000 claims description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- 239000012065 filter cake Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 238000000967 suction filtration Methods 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 claims 1
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 claims 1
- 239000000779 smoke Substances 0.000 claims 1
- 238000010792 warming Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052595 hematite Inorganic materials 0.000 abstract 1
- 239000011019 hematite Substances 0.000 abstract 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical group [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 abstract 1
- 239000002075 main ingredient Substances 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 21
- 230000008569 process Effects 0.000 description 8
- 239000002699 waste material Substances 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 229910009116 xCuO Inorganic materials 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 238000001994 activation Methods 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229960003753 nitric oxide Drugs 0.000 description 3
- 235000019391 nitrogen oxide Nutrition 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 239000012495 reaction gas Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000003113 alkalizing effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004500 asepsis Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical group [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
-
- 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
- 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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- 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
- B01J23/72—Copper
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/615—100-500 m2/g
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- 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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (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)
Abstract
The invention discloses a supported type red mud catalyst. The main ingredient of a supporter is hematite type iron trioxide. The surface load component copper oxide is in a high dispersion state, and the specific surface area is120-165 m<2>.g<-1>. The supported type red mud catalyst has the advantages of being large in specific surface area, high in thermal stability and the like, has the high activity and selectivity in NH3 selective catalytic reduction NO reactions, and has the potential application value in the field of denitrification. The invention further discloses a preparation method of the supported type red mud catalyst.
Description
Technical field
The present invention relates to the support type red mud Catalysts and its preparation method for denitrating flue gas.
Background technology
In recent years, along with widely using and a large amount of discharges of motor-vehicle tail-gas of fossil fuel, the harm of nitrogen oxide (NOx) is increasingly serious.Therefore, countries in the world are more and more paid attention to the emission control of NOx and governing problem.Ammine selectivity catalytic reduction technology (NH
3-SCR) owing to having the advantages such as denitration efficiency is high, operating cost is relatively low, be widely used in the denitration process in Industrial Boiler and power station unit.NH
3the key core of-SCR technology is NH
3-SCR catalyst system.At present, the NH of industrial applications
3-SCR catalyst is V mainly
2o
5-WO
3(MoO
3)/TiO
2catalyst, but such catalyst system still exists, and operating temperature window is narrower, cost is high, active component barium oxide has the deficiencies such as severe toxicity, and these deficiencies constrain the extensive use of such catalyst in actual coal-fired plant flue gas and motor vehicle tail-gas purifying.Therefore, develop that a class low temperature active is high, cost is low, the catalyst of asepsis environment-protecting for NO_x elimination, there is important scientific meaning and actual production is worth.
Red mud, as the main waste residue of aluminium manufacturer, has strong basicity.The method of China's process red mud mainly adopts Red Mud Dam to store up, water resource around red mud dump and soil are subject to pollution of seriously alkalizing, in addition the red mud stacked also can cause sand and dust to endanger, therefore the environmental pollution that red mud causes can not be ignored, and is a kind of effectively mode of environmental protection solving red mud piling up problem to the recycling of red mud.Red mud itself is containing Multicomponent, and wherein iron oxide, titanium oxide etc. have denitration activity, and aluminium oxide, silica are conventional denitration catalyst carriers, therefore can prepare denitrating catalyst based on red mud, reach the object of the treatment of wastes with processes of wastes against one another.In addition, we study and find using red mud as carrier, and cupric oxide is that the support type red mud catalyst prepared of active component is at NH
3than simple red mud catalyst, there is more significant advantage in-SCR reaction, and support type red mud catalyst also can solve V
2o
5-WO
3(or MO
3)/TiO
2the active component V of catalyst
2o
5toxic and shortcomings such as high temperature deactivation.
We are by a kind of easy preparation method, with industrial residue red mud for raw material, have successfully prepared a series of support type red mud catalyst with higher denitration activity, and at NH
3excellent catalytic performance is shown in-SCR catalytic reaction.Meanwhile, this catalyst is raw materials used cheap and easy to get, and preparation method is simple and efficient, less energy consumption, and environmental pollution is little, has the effect of the treatment of wastes with processes of wastes against one another, at NH
3there is potential application prospect in-SCR catalytic denitration field.
Summary of the invention
The object of this invention is to provide a kind of supported copper oxide red mud Catalysts and its preparation method and purposes.To activate red mud for carrier, adopt simple infusion process, prepared catalyst material has that specific area is large, NH
3-SCR performance high.
Principle of the present invention is as follows: red mud self contains Multimetal oxide component, and wherein iron oxide, titanium oxide etc. have denitration activity, and aluminium oxide, silica etc. are good denitration catalyst carriers.In view of former red mud contains a large amount of alkali metal oxides, and alkali metal oxide can cause denitrating catalyst poisoning and deactivation, therefore we take sour nitrated-alkaline precipitation to carry out activation process to red mud, and in the red mud after process, alkali metal content is extremely low, and specific area increases.We, to activate red mud for carrier, utilize the interaction of active component and carrier, make active component cupric oxide in red mud carrier surface high dispersive, prepare supported copper oxide red mud catalyst by infusion process.
Technical scheme of the present invention is as follows:
A kind of supported copper oxide red mud catalyst, to activate red mud for carrier, after load active component cupric oxide, cupric oxide is mainly surperficial at red mud with the form load of high dispersive, and red mud specific surface area of catalyst is 120-165m
2g
-1.
Prepare a method for above-mentioned supported copper oxide red mud catalyst, be made up of following steps:
Former for 10g red mud mixes according to mass ratio 1:15 with water by step 1., stirs 30min, is 3,50 with nitric acid by red mud slurry adjust ph
oc stirred in water bath 30min, leaves standstill and is cooled to room temperature; In the red mud mud after acidifying, dropwise add ammoniacal liquor, adjust ph is 9,50
oc stirring in water bath 30min, leaves standstill and is cooled to room temperature; Mud suction filtration is washed to neutrality, by filter cake 120
othe dry 12h of C, grinding, in Muffle furnace under air atmosphere 550
oc roasting 6h, namely obtains activation red mud carrier, is labeled as ARM.
ARM, for carrier, mixes with ultra-pure water by the activation red mud ARM that step 2. obtains with step 1, stirs 30min, slowly drips 0.1molL
-1copper nitrate solution, the amount ratio of each material is: ARM: water: copper nitrate solution (0.1molL
-1)=1g:10mL:0.1-12mL, continues to stir 30min, 90
oevaporate to dryness is stirred in C oil bath; By sample 120
othe dry 12h of C, grinding, in tube furnace under air atmosphere 500
oc roasting 5h, namely obtains the red mud catalyst of different cupric oxide load capacity, is labeled as xCuO/ARM(x=1,3,5,7,9, represents the mass percent of CuO/ (CuO+ARM)).
Supported copper oxide red mud sample of the present invention is as NH
3-SCR removes the catalyst of nitrogen oxide, has higher NO conversion ratio and N
2selective.
XCuO/ARM series of samples of the present invention has the feature such as high-specific surface area, excellent denitration catalyst activity.XCuO/ARM preparation method of the present invention, because raw material is cheaply easy to get, operating procedure is simple, and equipment requirement is not high, makes it have good potential application foreground in catalytic denitration field.
The advantage of preparation method of the present invention:
1. method is easy, and equipment is simple, pollutes few, the treatment of wastes with processes of wastes against one another;
2. gained xCuO/ARM specific surface area of catalyst is large, and denitration catalyst performance is good.
Accompanying drawing explanation
Fig. 1 is the XRD spectra of the xCuO/ARM catalyst of preparation.
Fig. 2 is the NH of xCuO/ARM of the present invention
3-SCR reactivity worth result.Fig. 2 (a) is the NO conversion results of xCuO/ARM, and Fig. 2 (b) is the N of xCuO/ARM
2selective result.
Detailed description of the invention
embodiment 1.the preparation of red mud carrier
Being mixed according to mass ratio 1:15 with water by former for 10g red mud, stir 30min, is 3 with nitric acid by red mud slurry adjust ph, 50
oc stirred in water bath 30min, leaves standstill and is cooled to room temperature; In the red mud mud after acidifying, dropwise add ammoniacal liquor, adjust ph is 9,50
oc stirring in water bath 30min, leaves standstill and is cooled to room temperature; Mud suction filtration is washed to neutrality, by filter cake 120
othe dry 12h of C, grinding, in Muffle furnace under air atmosphere 550
oc roasting 6h, namely obtains activation red mud carrier, is labeled as ARM.Its specific area and each component content are in table 1, and its XRD determining the results are shown in Figure 1, and denitration performance measurement result is shown in Fig. 2.
embodiment 2.the preparation of 1CuO/ARM catalyst
1gARM and 10mL ultra-pure water is mixed into red mud slurry, stirs 30min, slowly drip 1.26mL0.1molL
-1copper nitrate solution, continues to stir 30min, 90
oevaporate to dryness is stirred in C oil bath; By sample 120
othe dry 12h of C, grinding, in tube furnace under air atmosphere 500
oc roasting 5h, gained supported copper oxide red mud catalyst is labeled as 1CuO/ARM, and its specific area and each component content are in table 1, and its XRD determining the results are shown in Figure 1, and denitration performance measurement result is shown in Fig. 2.
embodiment 3.the preparation of 3CuO/ARM catalyst
1gARM and 10mL ultra-pure water is mixed into red mud slurry, stirs 30min, slowly drip 3.77mL0.1molL
-1copper nitrate solution, continues to stir 30min, 90
oevaporate to dryness is stirred in C oil bath; By sample 120
othe dry 12h of C, grinding, in tube furnace under air atmosphere 500
oc roasting 5h, gained supported copper oxide red mud catalyst is labeled as 3CuO/ARM, and its specific area and each component content are in table 1, and its XRD determining the results are shown in Figure 1, and denitration performance measurement result is shown in Fig. 2.
embodiment 4.the preparation of 5CuO/ARM catalyst
1gARM and 10mL ultra-pure water is mixed into red mud slurry, stirs 30min, slowly drip 6.29mL0.1molL
-1copper nitrate solution, continues to stir 30min, 90
oevaporate to dryness is stirred in C oil bath; By sample 120
othe dry 12h of C, grinding, in tube furnace under air atmosphere 500
oc roasting 5h, gained supported copper oxide red mud catalyst is labeled as 5CuO/ARM, and its specific area and each component content are in table 1, and its XRD determining the results are shown in Figure 1, and denitration performance measurement result is shown in Fig. 2.
embodiment 5.the preparation of 7CuO/ARM catalyst
1gARM and 10mL ultra-pure water is mixed into red mud slurry, stirs 30min, slowly drip 8.80mL0.1molL
-1copper nitrate solution, continues to stir 30min, 90
oevaporate to dryness is stirred in C oil bath; By sample 120
othe dry 12h of C, grinding, in tube furnace under air atmosphere 500
oc roasting 5h, gained supported copper oxide red mud catalyst is labeled as 7CuO/ARM, and its specific area and each component content are in table 1, and its XRD determining the results are shown in Figure 1, and denitration performance measurement result is shown in Fig. 2.
embodiment 6.the preparation of 9CuO/ARM catalyst
1gARM and 10mL ultra-pure water is mixed into red mud slurry, stirs 30min, slowly drip 11.31mL0.1molL
-1copper nitrate solution, continues to stir 30min, 90
oevaporate to dryness is stirred in C oil bath; By sample 120
othe dry 12h of C, grinding, in tube furnace under air atmosphere 500
oc roasting 5h, gained supported copper oxide red mud catalyst is labeled as 9CuO/ARM, and its specific area and each component content are in table 1, and its XRD determining the results are shown in Figure 1, and denitration performance measurement result is shown in Fig. 2.
embodiment 7.the NH of supported copper oxide red mud catalyst of the present invention
3the performance test of-SCR denitration
This reaction is carried out on micro-catalytic reaction device, and catalyst amount is 0.1g, and by catalyst pretreatment 30min in 200oCHe atmosphere, be cooled to room temperature, pass into reaction gas, reaction gas consists of 500ppmNO, 500ppmNH
3, 5%O
2, residual air is helium, and under condition of normal pressure, gas overall flow rate is 100mLmin
-1, the temperature of catalytic reaction is 200-500
oc.The NH of outlet is detected with infrared spectrometer
3and N
2o concentration, detects NO, NO of outlet with nitrogen-oxide analyzer,
2and NOx concentration, the conversion rate of NOx of catalyst and N
2selectively the results are shown in Figure 2.
Claims (4)
1. for a supported copper oxide red mud catalyst for ammine selectivity catalytic reduction nitrous oxides, it is characterized in that: carrier main component is hematite-type di-iron trioxide, area load component cupric oxide is high dispersion state, and specific area is 120-165m
2g
-1.
2. preparing a method for supported copper oxide red mud catalyst carrier according to claim 1, it is characterized in that: mixed according to mass ratio 1:15 with water by former for 10g red mud, stir 30min, is 3 with nitric acid by red mud slurry adjust ph, 50
oc stirred in water bath 30min, leaves standstill and is cooled to room temperature; In the red mud mud after acidifying, dropwise add ammoniacal liquor, adjust ph is 9,50
oc stirring in water bath 30min, leaves standstill and is cooled to room temperature; Mud suction filtration is washed to neutrality, by filter cake 120
othe dry 12h of C, grinding, in Muffle furnace under air atmosphere 550
oc roasting 6h, namely obtains activation red mud carrier.
3. prepare a method for supported copper oxide red mud catalyst according to claim 1, it is characterized in that: first the red mud after activation is placed in Muffle furnace 550
oc roasting 6h, makes red mud carrier, and red mud carrier and ultra-pure water are mixed into red mud slurry, stirs 30min, slowly drips 0.1molL
-1copper nitrate aqueous solution, the amount ratio of each material is: red mud carrier: water: 0.1molL
-1copper nitrate aqueous solution=1g:10mL:0.1-12mL, continues to stir 30min, in oil bath, mixed liquor is warming up to 90
oc, stirs until evaporate to dryness; By the sample grinding after evaporate to dryness, in air atmosphere in tube furnace 500
oc roasting 5h, namely obtains the red mud catalyst of different cupric oxide load capacity.
4. supported copper oxide red mud catalyst according to claim 1 is as the application of denitrating catalyst in smoke catalytic denitration.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964130A (en) * | 2016-07-25 | 2016-09-28 | 合肥天翔环境工程有限公司 | Environment-friendly flue gas denitrifying agent and preparation method thereof |
| CN107961790A (en) * | 2017-11-16 | 2018-04-27 | 北京化工大学 | It is a kind of using red mud as SCO catalyst of carrier loaded manganese and preparation method thereof |
| CN108043404A (en) * | 2017-12-20 | 2018-05-18 | 中国科学院过程工程研究所 | Catalyst of removing volatile organic compounds prepared by a kind of red mud and preparation method thereof |
| WO2019062452A1 (en) * | 2017-09-30 | 2019-04-04 | 中晶环境科技股份有限公司 | Flue gas processing agent based on red mud, and production method therefor and application thereof |
| CN111185173A (en) * | 2020-01-09 | 2020-05-22 | 山东大学 | Molded red mud catalyst and preparation method and application thereof |
| CN111420677A (en) * | 2020-04-23 | 2020-07-17 | 生态环境部华南环境科学研究所 | Load type catalyst using aluminum-containing sludge as carrier and preparation method and application thereof |
| CN113231085A (en) * | 2021-05-25 | 2021-08-10 | 北京化工大学 | Ferric sulfate modified red mud-based denitration catalyst and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019062452A1 (en) * | 2017-09-30 | 2019-04-04 | 中晶环境科技股份有限公司 | Flue gas processing agent based on red mud, and production method therefor and application thereof |
| CN107961790A (en) * | 2017-11-16 | 2018-04-27 | 北京化工大学 | It is a kind of using red mud as SCO catalyst of carrier loaded manganese and preparation method thereof |
| CN108043404A (en) * | 2017-12-20 | 2018-05-18 | 中国科学院过程工程研究所 | Catalyst of removing volatile organic compounds prepared by a kind of red mud and preparation method thereof |
| CN108043404B (en) * | 2017-12-20 | 2021-06-15 | 中国科学院过程工程研究所 | Catalyst prepared from red mud for removing volatile organic compounds and preparation method thereof |
| CN111185173A (en) * | 2020-01-09 | 2020-05-22 | 山东大学 | Molded red mud catalyst and preparation method and application thereof |
| CN111420677A (en) * | 2020-04-23 | 2020-07-17 | 生态环境部华南环境科学研究所 | Load type catalyst using aluminum-containing sludge as carrier and preparation method and application thereof |
| CN113231085A (en) * | 2021-05-25 | 2021-08-10 | 北京化工大学 | Ferric sulfate modified red mud-based denitration catalyst and preparation method and application thereof |
| CN113231085B (en) * | 2021-05-25 | 2023-06-27 | 北京化工大学 | Ferric sulfate modified red mud-based denitration catalyst and preparation method and application thereof |
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