CN105561984B - The clay loaded γ MnO of one kind mixing nonmetallic ore2Low-temperature denitration catalyst and preparation method - Google Patents
The clay loaded γ MnO of one kind mixing nonmetallic ore2Low-temperature denitration catalyst and preparation method Download PDFInfo
- Publication number
- CN105561984B CN105561984B CN201610031366.4A CN201610031366A CN105561984B CN 105561984 B CN105561984 B CN 105561984B CN 201610031366 A CN201610031366 A CN 201610031366A CN 105561984 B CN105561984 B CN 105561984B
- Authority
- CN
- China
- Prior art keywords
- clay
- mno
- catalyst
- nonmetallic ore
- low
- 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.)
- Expired - Fee Related
Links
- 239000004927 clay Substances 0.000 title claims abstract description 71
- 239000003054 catalyst Substances 0.000 title claims abstract description 55
- 238000002156 mixing Methods 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000004113 Sepiolite Substances 0.000 claims description 30
- 229910052624 sepiolite Inorganic materials 0.000 claims description 30
- 235000019355 sepiolite Nutrition 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 239000002002 slurry Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000000725 suspension Substances 0.000 claims description 11
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 10
- 229910001868 water Inorganic materials 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 229910006287 γ-MnO2 Inorganic materials 0.000 claims description 7
- 229910052878 cordierite Inorganic materials 0.000 claims description 6
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 1
- 208000011580 syndromic disease Diseases 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 11
- 230000002045 lasting effect Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 229960000892 attapulgite Drugs 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 229910052625 palygorskite Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 150000003624 transition metals Chemical class 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012495 reaction gas Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- WYCDUUBJSAUXFS-UHFFFAOYSA-N [Mn].[Ce] Chemical compound [Mn].[Ce] WYCDUUBJSAUXFS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 1
- GEYXPJBPASPPLI-UHFFFAOYSA-N manganese(III) oxide Inorganic materials O=[Mn]O[Mn]=O GEYXPJBPASPPLI-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 231100000957 no side effect Toxicity 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000009466 transformation Effects 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
- B01J23/16—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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention belongs to denitration catalyst field, there is provided the clay loaded γ MnO of one kind mixing nonmetallic ore2Low-temperature denitration catalyst and preparation method thereof, the catalyst is to mix nonmetallic ore clay as carrier, load active component γ MnO2The clay loaded γ MnO of mixing nonmetallic ore are made2Low-temperature denitration catalyst.The preparation technology of the catalyst is simple, and the catalyst prepared can play increase specific surface area, pore volume, aperture, increases the intensity of catalyst so that catalyst easy-formation, convenient installation；In addition the cheap price of nonmetallic ore clay, the cost of catalyst is greatly reduced.
Description
Technical field
The invention belongs to denitration catalyst field, more particularly, to the clay loaded γ-MnO of one kind mixing nonmetallic ore2Low temperature
Denitrating catalyst.
Background technology
Ammonia Selective Catalytic Reduction of NOx(NH3- SCR) it is considered as the denitrating flue gas being most widely used in the world at present
The advantages that technology, this method have and had no side effect, and do not form secondary pollution, and apparatus structure is simple, and removal efficiency is high.But use at present
V-W-Ti series commercial catalysts, carrier TiO be present2It is expensive, bad mechanical strength, not the shortcomings of easy-formation；It is same with this
When V2O5It is higher as reaction temperature needed for active component, general to require control in 573~673K and toxic.Therefore, develop
Inexpensively free of contamination SCR catalyst technique is very necessary for low temperature.The A of Chinese patent CN 103381362 disclose one kind with nanometer
TiO2For carrier, the preparation method of the manganese cerium active component low temperature catalyst of carrying transition metal (M) doping, by manganese nitrate, nitre
Sour cerium, the nitrate of transition metal are configured to the aqueous solution in proportion, and TiO is supported on using infusion process2On powder, high temperature is forged
Burn, finally obtain Mn-Ce-M/TiO2Catalyst.Catalyst is disadvantageous in that made from this method：1. complex manufacturing technology,
The doping of transition metal certainly will further increase the use cost of catalyst；2. high-temperature calcination can make MnO2Crystal formation is to Mn2O3Crystal formation
Transformation, influences denitration efficiency.
The content of the invention
The present invention carries for the shortcomings that catalyst carrier is expensive, reactivity temperature is high present in prior art
For the clay loaded γ-MnO of one kind mixing nonmetallic ore2Low-temperature denitration catalyst and preparation method.Catalyst prepared by the present invention
Preparation technology is simple, and the catalyst strength prepared is high, and active temperature is low, active temperature range is wide and denitration efficiency is high.In addition,
The clay mineral products used in the present invention are cheap in China's rich reserves, so as to save the production cost of catalyst.
The technical solution adopted in the present invention is：Clay loaded γ-the MnO of one kind mixing nonmetallic ore2Low-temperature denitration is catalyzed
Agent, to mix nonmetallic ore clay as carrier, with γ-MnO2For the active component of load.
Further, γ-MnO in the catalyst2Content is 1wt%~10wt% of catalyst gross mass；Two kinds non-
Metallic ore mixed proportion is 1~3:1.
The above-mentioned clay loaded γ-MnO of mixing nonmetallic ore2The preparation method of low-temperature denitration catalyst, step are as follows：
(1) nonmetallic ore clay is dissolved separately in 1.5~2mol/L HCl, until solution does not produce bubble, stood
18~24h.Nonmetallic ore clay after acidifying is scattered in deionized water, mechanism is emulsified using 4000~5000r/min
Slurry, choose upper liquid and obtain 3~8g/100mL suspension slurries；
(2) at room temperature, the MnSO that mass concentration is 1~5g/100mL is dissolved4·H2O and 3~5g/100mL (NH4)2S2O8Solution is in the suspension slurry that step (1) obtains, lasting stirring, is warming up to 75~85 DEG C of 1.5~2h of reaction；React
Product is filtered after complete, washed, is dried, that is, obtains mixing the clay loaded γ-MnO of nonmetallic ore2Low-temperature denitration catalyst.
Preferably, described mixing nonmetallic ore clay be Concave-convex clay rod/sepiolite clay, montmorillonitic clay/
One kind in sepiolite clay or cordierite clay/sepiolite clay.
Beneficial effects of the present invention are：
1st, on the one hand, using the fiber bundle-like structure that sepiolite is huge, one layer of needle-like γ-MnO is wrapped up2Active component, together
When the cotton-shaped loose characteristic of sepiolite be advantageous to active principle and sufficiently contacted with reaction gas.On the other hand, using attapulgite
Clay, montmorillonitic clay and cordierite can play increase specific surface area, pore volume, aperture, increase catalyst as blending ingredients
Intensity so that catalyst easy-formation, convenient installation；In addition the cheap price of nonmetallic ore clay, greatly reduces catalyst
Cost.
2nd, compared with single sepiolite is as carrier, the Concave-convex clay rod of addition, montmorillonitic clay, cordierite clay are all
With certain conversion NOxAbility, γ-MnO2Possesses low temperature NO most prominent in Mn series catalysts as active componentxRemoving
Ability.So the invention enables the use condition of catalyst is looser, energy consumption is lower.
Brief description of the drawings
Fig. 1 is sepiolite XRD before and after being acidified in embodiment 1.
Fig. 2 is γ-MnO prepared by embodiment 22With γ-MnO2- sepiolite/attapulgite contrast TEM figures.
Embodiment
With reference to embodiment and comparative example, to illustrate a kind of clay loaded γ-MnO of mixing nonmetallic ore2Low temperature
Denitrating catalyst and preparation method, but unlimited the scope of the present invention.
Embodiment 1
1. 10g sepiolite clays and 10g Concave-convex clay rods are dissolved in 1.5mol/L HCl, until solution does not produce
Anger bubble, stands 18h.Nonmetallic ore clay after acidifying is scattered in deionized water, using 4000r/min mulser slurrying,
Choose upper liquid and obtain 4g/100mL suspension slurries；
2. at room temperature, dissolve the MnSO that 100mL mass concentrations are 3g/100mL4·H2O and 130mL mass concentrations are 3g/
100mL (NH4)2S2O8Solution is in 500mL steps (1) slurry, lasting stirring, and heat up 80 DEG C of reaction 2h；After reaction completely
Product is filtered, washed, dries, that is, obtains 7wt.% γ-MnO2- sepiolite clay/Concave-convex clay rod low-temperature denitration catalysis
Agent.
Fig. 1 is the XRD of sepiolite before and after acidifying, and by preparation method in embodiment 1, sepiolite is in 1.5mol/L HCl
Reaction is made；There is CaCO 29.8 ° of positions in 2 θ angles before can see clearly that acidifying from figure3Diffraction maximum,
There is the diffraction maximum of dolomite in 30.9 ° and 51.1 ° of positions.And the diffraction maximum of both materials disappears substantially after being acidified, this says
Bright hydrochloric acid acidifying can be very good to remove the impurity in sepiolite.
Fig. 2 (a) is γ-MnO2TEM figure, needle-like γ-MnO are can be clearly seen that from figure2Crystal grain.With reference to Fig. 2 (b)
The elongated piece of middle column sepiolite surface distributed, can illustrate well：γ-MnO2Sepiolite surface sufficiently is supported on,
Sepiolite serves carrier function well.
Embodiment 2
1. 15g sepiolite clays and 5g montmorillonite stone clays are dissolved in 1.5mol/L HCl, until solution does not produce
Bubble, stand 24h.Nonmetallic ore clay after acidifying is scattered in deionized water, uses 5000r/min mulser slurrying, choosing
Upper liquid is taken to obtain 5g/100mL suspension slurries；
2. at room temperature, dissolve the MnSO that 60mL mass concentrations are 5g/100mL4·H2O and 80mL mass concentrations are 5g/
100mL (NH4)2S2O8Solution is in 400mL steps (1) slurry, lasting stirring, and heat up 75 DEG C of reaction 2.5h；After reaction completely
Product is filtered, washed, dries, that is, obtains 7wt.% γ-MnO2- sepiolite clay/montmorillonitic clay low-temperature denitration catalyst.
Embodiment 3
1. 10g sepiolite clays and 10g cordierite clays are dissolved in 2.5mol/L HCl, until solution does not produce
Bubble, stand 20h.Nonmetallic ore clay after acidifying is scattered in deionized water, uses 4000r/min mulser slurrying, choosing
Upper liquid is taken to obtain 8g/100mL suspension slurries；
2. at room temperature, dissolve the MnSO that 75mL mass concentrations are 4g/100mL4·H2O and 100mL mass concentrations are 4g/
100mL (NH4)2S2O8Solution is in 250mL steps (1) slurry, lasting stirring, and heat up 85 DEG C of reaction 1.5h；After reaction completely
Product is filtered, washed, dries, that is, obtains 7wt.% γ-MnO2- sepiolite clay/cordierite clay low-temperature denitration catalyst.
Embodiment 4
1. 10g sepiolite clays and 10g Concave-convex clay rods are dissolved in 2mol/L HCl, until solution does not produce
Bubble, stand 18h.Nonmetallic ore clay after acidifying is scattered in deionized water, uses 4500r/min mulser slurrying, choosing
Upper liquid is taken to obtain 4g/100mL suspension slurries；
2. at room temperature, dissolve the MnSO that 45mL mass concentrations are 3g/100mL4·H2O and 60mL mass concentrations are 3g/
100mL (NH4)2S2O8Solution is in 500mL steps (1) slurry, lasting stirring, and heat up 80 DEG C of reaction 2h；Will after reaction completely
Product filters, and washs, and dries, that is, obtains 3wt.% γ-MnO2- sepiolite clay/Concave-convex clay rod low-temperature denitration catalyst.
Embodiment 5
1. 10g sepiolite clays and 10g Concave-convex clay rods are dissolved in 1.5mol/L HCl, until solution does not produce
Anger bubble, stands 24h.Nonmetallic ore clay after acidifying is scattered in deionized water, using 4000r/min mulser slurrying,
Choose upper liquid and obtain 6g/100mL suspension slurries；
2. at room temperature, dissolve the MnSO that 215mL mass concentrations are 2g/100mL4·H2O and 278mL mass concentrations are 2g/
100mL (NH4)2S2O8Solution is in 335mL steps (1) slurry, lasting stirring, and heat up 80 DEG C of reaction 1.5h；Reaction is complete
Product is filtered afterwards, washed, dries, that is, obtains 10wt.% γ-MnO2- sepiolite clay/Concave-convex clay rod low-temperature denitration
Catalyst.
Comparative example 1
Attapulgite clay component in the catalyst of embodiment 1 is removed in comparative example 1, concrete operation step is as follows：
1. 20g sepiolite clays are dissolved in 2mol/L HCl, until solution does not produce bubble, 24h is stood.By acid
Nonmetallic ore clay is scattered in deionized water after change, using 4500r/min mulser slurrying, is chosen upper liquid and is obtained 4g/
100mL suspension slurries；
2. at room temperature, dissolve the MnSO that 100mL mass concentrations are 3g/100mL4·H2O and 130mL mass concentrations are 3g/
100mL (NH4)2S2O8Solution is in 500mL steps (1) slurry, lasting stirring, and heat up 85 DEG C of reaction 2h；After reaction completely
Product is filtered, washed, dries, that is, obtains 7wt.% γ-MnO2/ sepiolite clay low-temperature denitration catalyst.
Comparative example 2
Sepiolite clay composition in the catalyst of embodiment 1 is removed in comparative example 2, concrete operation step is as follows：
1. 20g Concave-convex clay rods are dissolved in 2.5mol/L HCl, until solution does not produce bubble, 19h is stood.
Nonmetallic ore clay after acidifying is scattered in deionized water, using 5000r/min mulser slurrying, upper liquid is chosen and obtains
5g/100mL suspension slurries；
2. at room temperature, dissolve the MnSO that 60mL mass concentrations are 5g/100mL4·H2O and 80mL mass concentrations are 5g/
100mL (NH4)2S2O8Solution is in 500mL steps (1) slurry, lasting stirring, and heat up 80 DEG C of reaction 2.5h；After reaction completely
Product is filtered, washed, dries, that is, obtains 7wt.% γ-MnO2/ Concave-convex clay rod low-temperature denitration catalyst.
Mix the clay loaded γ-MnO of nonmetallic ore2Low-temperature denitration catalyst performance test
The present invention carries out active evaluation test on fixed reaction bed (TORCH) to above-mentioned catalyst.Using KM9106 types
Flue gas analyzer measurement inlet and outlet NO concentration, is accurately controlled from high-precision mass flowmenter (Sevenstar-HC, D07-19B types)
Gas flow processed.Select N2As reaction gas carrier gas, each road gas composition is：[NO]=1000ppm, [NH3]=1000ppm,
O2=3vol%, reaction velocity=25000h-1, it is 50~400 DEG C to select reaction temperature.
Test process inserts 5mL catalyst in packed column first, opens each road gas, adjusts with gas velocity, measurement
Import NO gas concentrations, are designated as [NOin], ventilate at room temperature half an hour, after Catalyst Adsorption saturation heat up 50 DEG C, afterwards every
25 DEG C of measurements once export NO concentration, are designated as [NOout].Measurement data is as shown in table 1.
Denitration efficiency is calculated as follows：
From table 1, the clay loaded γ-MnO of mixing nonmetallic ore prepared by the present invention2Low-temperature denitration catalyst has
Relatively low active temperature, wider active temperature section and excellent denitration effect.
The denitration performance evaluation test data of table 1
| Optimal denitration rate/% | Most highly active temperature/(DEG C) | Most highly active temperature range/(DEG C) | |
| Embodiment 1 | 98.9 | 150 | 150-350 |
| Embodiment 2 | 97.4 | 150 | 150-350 |
| Embodiment 3 | 97.9 | 150 | 150-350 |
| Embodiment 4 | 94.1 | 175 | 175-325 |
| Embodiment 5 | 98.1 | 150 | 150-350 |
| Comparative example 1 | 89.5 | 225 | 225-350 |
| Comparative example 2 | 94.3 | 200 | 200-350 |
Claims (4)
1. the clay loaded γ-MnO of one kind mixing nonmetallic ore2The preparation method of low-temperature denitration catalyst, it is characterised in that：It is described
Preparation method step is as follows：
(1) nonmetallic ore clay is dissolved separately in HCl, until solution does not produce bubble, stands 18~24h；After being acidified
Nonmetallic ore clay be scattered in deionized water, using 4000~5000r/min mulser slurrying, choose upper liquid and hanged
Turbid slurry；
(2) at room temperature, MnSO is dissolved4·H2O and (NH4)2S2O8Solution persistently stirs in the suspension slurry described in step (1)
Mix, be warming up to 75~85 DEG C of 1.5~2h of reaction；Product is filtered after reaction completely, washed, is dried, that is, obtains mixing nonmetallic
Clay loaded γ-the MnO of ore deposit2Low-temperature denitration catalyst；
Wherein, the clay loaded γ-MnO of obtained mixing nonmetallic ore2Low-temperature denitration catalyst is to mix nonmetallic ore clay as load
Body, with γ-MnO2For the active component of load；The mixing nonmetallic ore clay is Concave-convex clay rod/sepiolite clay, illiteracy
One kind in de- stone clay/sepiolite clay or cordierite clay/sepiolite clay.
2. the clay loaded γ-MnO of mixing nonmetallic ore as claimed in claim 12The preparation method of low-temperature denitration catalyst, its
It is characterised by：γ-MnO in the catalyst2Content is 1wt%~10wt% of catalyst gross mass, and two kinds of nonmetallic ores mix
Composition and division in a proportion example is 1~3:1.
3. the clay loaded γ-MnO of mixing nonmetallic ore as claimed in claim 12The preparation method of low-temperature denitration catalyst, its
It is characterised by：The substance withdrawl syndrome of HCl described in step (1) is 1.5~2mol/L, and the mass concentration of suspension slurry is 3
~8g/100mL.
4. the clay loaded γ-MnO of mixing nonmetallic ore as claimed in claim 12The preparation method of low-temperature denitration catalyst, its
It is characterised by：MnSO described in step (2)4·H2O and (NH4)2S2O8The mass concentration of solution is respectively 1~5g/100mL and 3
~5g/100mL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610031366.4A CN105561984B (en) | 2016-01-18 | 2016-01-18 | The clay loaded γ MnO of one kind mixing nonmetallic ore2Low-temperature denitration catalyst and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610031366.4A CN105561984B (en) | 2016-01-18 | 2016-01-18 | The clay loaded γ MnO of one kind mixing nonmetallic ore2Low-temperature denitration catalyst and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105561984A CN105561984A (en) | 2016-05-11 |
| CN105561984B true CN105561984B (en) | 2017-11-10 |
Family
ID=55872939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610031366.4A Expired - Fee Related CN105561984B (en) | 2016-01-18 | 2016-01-18 | The clay loaded γ MnO of one kind mixing nonmetallic ore2Low-temperature denitration catalyst and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105561984B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106423192B (en) * | 2016-09-19 | 2018-12-28 | 常州大学 | A kind of metal pillared montmorillonite load γ-MnO2Low-temperature denitration catalyst and preparation method thereof |
| CN110721674A (en) * | 2019-09-26 | 2020-01-24 | 合肥工业大学 | Manganese-based montmorillonite low-temperature SCR catalyst and preparation method thereof |
| CN112156782A (en) * | 2020-08-07 | 2021-01-01 | 光大水务（深圳）有限公司 | Fenton-mud-containing catalyst for water treatment and preparation and application methods thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014133824A1 (en) * | 2013-02-27 | 2014-09-04 | Isp Investments Inc. | A novel high pressure high temperature (hpht) aqueous drilling mud composition and process for preparing the same |
| CN103962188A (en) * | 2014-05-15 | 2014-08-06 | 合肥天竞蓝环保科技有限公司 | Novel low-temperature SCR denitrification catalyst for automobile tail gas and preparation method of catalyst |
| CN104607180B (en) * | 2015-01-21 | 2017-01-25 | 常州大学 | Mixed-crystal MnO2/rod-like clay low-temperature denitration catalyst and preparation method thereof |
-
2016
- 2016-01-18 CN CN201610031366.4A patent/CN105561984B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105561984A (en) | 2016-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105126825B (en) | A kind of low-temperature denitration of flue gas catalyst and preparation method thereof | |
| CN104607180B (en) | Mixed-crystal MnO2/rod-like clay low-temperature denitration catalyst and preparation method thereof | |
| CN100369669C (en) | Selective catalytic reducing NOx catalyst based on MnOx/TiO2 system at low-temperature and production thereof | |
| CN103240079B (en) | Cerium-zirconium-tungsten composite oxide catalyst as well as preparation method and usage thereof | |
| CN108393085B (en) | Attapulgite-loaded cerium-doped MnTiOX ternary-component low-temperature denitration catalyst and preparation method thereof | |
| CN105561984B (en) | The clay loaded γ MnO of one kind mixing nonmetallic ore2Low-temperature denitration catalyst and preparation method | |
| CN111450841A (en) | Reduction method simultaneous desulfurization and denitrification catalyst prepared from red mud and preparation method thereof | |
| CN101966451A (en) | Preparation method and application of nanometer ceria-zirconia solid solution-based catalyst for selectively catalytically oxidizing ammonia | |
| CN103316685A (en) | Low-dimensional nano-structured iron vanadate denitration catalyst, and preparation method and application thereof | |
| CN108525701A (en) | For low temperature NH3- SCR removes diesel engine NOxCopper-based molecular sieve catalyst and preparation method thereof | |
| CN106423192B (en) | A kind of metal pillared montmorillonite load γ-MnO2Low-temperature denitration catalyst and preparation method thereof | |
| CN107754849A (en) | A kind of preparation method of support type high temperature denitrating catalyst | |
| CN101869833B (en) | Catalyst for SCR denitration of furnace middle temperature fume and preparation method thereof | |
| CN109701524A (en) | Remove the catalyst and preparation method thereof of nitrogen oxides | |
| CN104923213B (en) | A kind of nontoxic rare-earth type denitrating catalyst and its preparation method and application | |
| CN108355664A (en) | A kind of attapulgite load TiO2-SrTiO3Hetero-junctions SCR low-temperature denitration catalysts | |
| CN105817229A (en) | Rare earth element modified load type cobaltosic oxide catalyst and preparation method thereof | |
| CN103007943A (en) | Catalyst used for preparing ethanol by hydrogenation of acetic ester as well as preparation method and application of catalyst | |
| CN103272636B (en) | Cu/ETS-10 supported SCR catalyst synthesis method | |
| CN105879869A (en) | Catalyst used for hydrogen selective reduction of nitric oxide as well as preparation method and application thereof | |
| CN109589969A (en) | Aluminium manganese is total to the preparation method and application of pillared montmorillonite load Eu-Ce composite catalyst | |
| CN108479786A (en) | A kind of attapulgite load CeO2-NiTiO3Hetero-junctions SCR low-temperature denitration catalysts | |
| CN112958075A (en) | Ce-doped sodium-manganese composite oxide catalyst and preparation method and application thereof | |
| CN102179243B (en) | Catalyst for selective catalytic reduction of nitrogen oxide in moderate/low temperature environment | |
| CN107469811A (en) | A kind of wide temperature window denitrating catalyst and its preparation method and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171110 |