CN108906024A - Catalyst for treating waste gas and preparation method thereof and purposes - Google Patents
Catalyst for treating waste gas and preparation method thereof and purposes Download PDFInfo
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- CN108906024A CN108906024A CN201810804153.XA CN201810804153A CN108906024A CN 108906024 A CN108906024 A CN 108906024A CN 201810804153 A CN201810804153 A CN 201810804153A CN 108906024 A CN108906024 A CN 108906024A
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- Prior art keywords
- catalyst
- alumina support
- waste gas
- treating waste
- carrier
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- 239000003054 catalyst Substances 0.000 title claims abstract description 50
- 239000002912 waste gas Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims abstract description 95
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 91
- 239000007789 gas Substances 0.000 claims abstract description 19
- 239000011964 heteropoly acid Substances 0.000 claims abstract description 18
- 239000013078 crystal Substances 0.000 claims abstract description 8
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 7
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 229910001593 boehmite Inorganic materials 0.000 claims description 10
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 7
- 229910052594 sapphire Inorganic materials 0.000 claims description 6
- 229910006415 θ-Al2O3 Inorganic materials 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- DHRLEVQXOMLTIM-UHFFFAOYSA-N phosphoric acid;trioxomolybdenum Chemical compound O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.OP(O)(O)=O DHRLEVQXOMLTIM-UHFFFAOYSA-N 0.000 claims description 4
- IYDGMDWEHDFVQI-UHFFFAOYSA-N phosphoric acid;trioxotungsten Chemical compound O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.OP(O)(O)=O IYDGMDWEHDFVQI-UHFFFAOYSA-N 0.000 claims description 2
- CGFYHILWFSGVJS-UHFFFAOYSA-N silicic acid;trioxotungsten Chemical compound O[Si](O)(O)O.O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1.O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1.O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1.O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 CGFYHILWFSGVJS-UHFFFAOYSA-N 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 238000006555 catalytic reaction Methods 0.000 abstract description 5
- 239000003345 natural gas Substances 0.000 abstract description 5
- 238000007084 catalytic combustion reaction Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 4
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 229960005363 aluminium oxide Drugs 0.000 description 11
- 239000000463 material Substances 0.000 description 9
- 230000003197 catalytic effect Effects 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 description 4
- 238000003756 stirring Methods 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000007592 spray painting technique Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 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
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VLAPMBHFAWRUQP-UHFFFAOYSA-L molybdic acid Chemical compound O[Mo](O)(=O)=O VLAPMBHFAWRUQP-UHFFFAOYSA-L 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- WNUPENMBHHEARK-UHFFFAOYSA-N silicon tungsten Chemical compound [Si].[W] WNUPENMBHHEARK-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010129 solution processing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 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
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
-
- 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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- 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
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/28—Molybdenum
-
- 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
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/30—Tungsten
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J27/188—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with chromium, molybdenum, tungsten or polonium
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J27/188—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with chromium, molybdenum, tungsten or polonium
- B01J27/19—Molybdenum
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/502—Carbon monoxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The present invention provides a kind of catalyst for treating waste gas and preparation method thereof and purposes, belongs to catalyst for treating waste gas technical field.Catalyst for treating waste gas of the invention includes alumina support and the active component that is carried on alumina support, wherein alumina support be include δ~Al2O3, θ~Al2O3With α~Al2O3In at least two crystal phases carrier, active component be lanthana and heteropoly acid.Alumina support of the invention includes the carrier of at least two crystal phases, and the alumina support of multiphase has bigger specific surface area compared to the alumina support of single crystal phase, load capacity of the active component on carrier thus can be improved；In addition, active component lanthana and heteropoly acid and alumina support collective effect, suitable for purifying vehicle exhaust, organic exhaust gas elimination and the purification of natural gas catalytic combustion exhaust gas or catalysis burning.
Description
Technical field
The invention belongs to technical field of waste gas treatment, and in particular to a kind of catalyst for treating waste gas and preparation method thereof with
On the way.
Background technique
Currently, atmosphere pollution is one of whole world environmental problem most outstanding, wherein vehicle exhaust and industrial organic exhaust gas are
The main source of atmosphere pollution, for example, the exhaust of some chemical industries, petrochemical industry, organic synthesis equipment, printing industry printing ink
Middle organic solvent, the spray painting of machinery industry machinery, the smell of metal product generation, the spray painting of automobile industry automobile, drying oven casting
Production equipment exhaust and hardware, the exhaust of family property factory spraying equipment etc. can generate chemical exhaust.These vehicle exhausts and industry
After organic exhaust gas one side object enters atmosphere, photochemical fog is formed under certain condition, causes secondary pollution.In addition, can be
Photochemical reaction occurs with ozone under ultraviolet irradiation, causes ozone hole, and exhaust gas can also cause greenhouse effects；It is another
Aspect, these vehicle exhausts and industrial organic exhaust gas can cause to seriously endanger to the health of human body, as these exhaust gas can be by exhaling
It inhales road and skin enters human body, temporary and permanent lesion can be caused to the systems such as the breathing of people, blood, liver and organ,
Especially benzopyrenes polycyclic aromatic hydrocarbon can make human body directly carcinogenic, be detrimental to health.Therefore, vehicle exhaust and organic waste are reduced
Gas pollution, environment protection quality, realize ecological environment and society sustainable development, guarantee human health, be it is current and
One of the important topic of China environmental protection in the following long duration.
For example, Chinese patent literature CN103349979A is disclosed, one kind being suitable for purifying vehicle exhaust, organic exhaust gas disappears
Except the Aluminium-oxide catalytic material with the waste gas purifications such as natural gas catalytic combustion or catalysis burning, the Aluminium-oxide catalytic material, by oxygen
Change aluminium and lanthana forms, wherein the mass content of lanthana is 3%~5%, remaining is aluminium oxide.
But the Aluminium-oxide catalytic material of above-mentioned technology is eliminated by purifying vehicle exhaust, organic exhaust gas or natural gas catalysis combustion
The effect is unsatisfactory for burning.Therefore, how existing catalyst for treating waste gas is improved to overcome the above shortcomings, this for
It is a technical problem urgently to be resolved for those skilled in the art.
Summary of the invention
The present invention provides a kind of catalyst for treating waste gas, which is suitable for purifying vehicle exhaust, organic exhaust gas disappears
Except the purification with natural gas catalytic combustion exhaust gas or it is catalyzed burning, the present invention simultaneously further provides preparation method and purposes.
The present invention solve the technical solution that uses of above-mentioned technical problem for:
The first aspect of the present invention, provides a kind of catalyst for treating waste gas, including alumina support and is carried on the oxygen
Change the active component on alumina supporter,
The alumina support includes δ-Al2O3、θ-Al2O3With α-Al2O3In at least two crystal phases carrier；It is preferred that
Ground, alumina support of the invention include δ-Al2O3、θ-Al2O3With α-Al2O3Three kinds of crystal phases.Ratio between three is not special
It limits, can be arbitrary proportion.
The active component is lanthana and heteropoly acid.
Above-mentioned catalyst for treating waste gas, it is preferable that the heteropoly acid is in phosphotungstic acid, silico-tungstic acid, phosphomolybdic acid or silicomolybdic acid
It is one or more.
Above-mentioned catalyst for treating waste gas, it is preferable that the quality of the alumina support and the lanthana, the heteropoly acid
Than being 100:(3.5~5):(10~35), preferably 100:(3.8~4):(11~30).
Second method of the invention provides the preparation method of above-mentioned catalyst for treating waste gas, includes the following steps:
(1) prepared by carrier
By boehmite at 700~1300 DEG C, preferably 750~1200 DEG C roastings 3~6.5h, preferably 4~6h obtain institute
State carrier；
(2) load of the lanthana on carrier
The carrier made from step (1) is added to the water with the lanthana, obtains slurries A；
The slurries A is milled to D50It is 2~4 μm, preferably 2.5~3.5 μm, then dries, at 600~650 DEG C, preferably
2~3h is roasted at 620~640 DEG C, preferably 2.5~2.8h must load the alumina support of lanthana；
(3) load of the heteropoly acid on carrier
There is the surface of the alumina support of lanthana to spray heteropoly acid aqueous solution to step (2) load obtained, then does
It is dry, obtain the catalyst for treating waste gas.
Preferably, in the step of above-mentioned preparation method (1), Kong Rongwei 0.3~0.7g/mL of the boehmite is excellent
Select 0.4~0.6g/mL.
Preferably, in the step of above-mentioned preparation method (2), the carrier made from step (1) is added with the lanthana
Enter into water, at 80~100 DEG C, 1~4h, 2~3h is stirred at preferably 90~95 DEG C, obtains slurries A.
Preferably, in the step of above-mentioned preparation method (2), the carrier, the lanthana and the water mass ratio be
(10~30):(2.2~3.5):100, preferably (12~28):(2.5~3.4):100.
Preferably, in the step of above-mentioned preparation method (3), the drying temperature be 90~145 DEG C, preferably 100~140
DEG C, the time be 1~3h, preferably 2~2.5h.
The third aspect of the present invention provides the catalyst for treating waste gas that above-mentioned preparation method is prepared.
The fourth aspect of the present invention provides above-mentioned catalyst for treating waste gas or exhaust gas that above-mentioned preparation method is prepared
Handle purposes of the catalyst in exhaust-gas treatment.
Above-mentioned technical proposal of the invention has the following advantages that:
(1) catalyst for treating waste gas of the invention, on the one hand, alumina support includes the carrier of at least two crystal phases, is mixed
The alumina support of synthetic phase has bigger specific surface area compared to the alumina support of single crystal phase, and active group thus can be improved
Divide the load capacity on carrier, while it is more uniform that active component is dispersed on carrier；On the other hand, biggish specific surface
Product can prevent the reunion and sintering of active component, extend the service life of catalyst；In addition, active component lanthana and miscellaneous more
Acid and alumina support collective effect are suitable for purifying vehicle exhaust, organic exhaust gas is eliminated and the exhaust gas such as natural gas catalytic combustion
Purification or catalysis burning.
(2) preparation method of catalyst for treating waste gas of the present invention is by carrying out water to alumina support and lanthana
Solution processing, hydrothermal synthesis lanthanum modified aluminas, strengthens aluminium oxide and lanthana interacts, and load is finally had lanthana
The load of alumina support progress heteropoly acid.Above-mentioned preparation method has simple process, and no wastewater treatment is easy to industrial production etc.
Advantage.
Specific embodiment
Technical solution of the present invention will be clearly and completely described below, it is clear that described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.In addition, below
Technical characteristic involved in described different embodiments of the present invention as long as they do not conflict with each other can be mutual
In conjunction with.
It is recommended that summary of the invention is described in detail.
Embodiment 1
The preparation method of catalyst for treating waste gas provided in this embodiment includes the following steps:
(1) prepared by carrier
It weighs the hole 30g to hold the boehmite for being 0.5g/mL and obtains δ-Al in 850 DEG C of roasting 4.5h2O3With θ-Al2O3's
The alumina support of multiphase；
(2) load of the lanthana on carrier
It takes alumina support made from 20g step (1) and 3g lanthana to be added in 100mL water, stirs 3h at 90 DEG C,
Obtain slurries A；
By above-mentioned slurries A through being milled to D50It is 3 μm, then the dry 2h at 50 DEG C, roasts 2.5h at 630 DEG C, obtain
Load has the alumina support of lanthana；
(3) load of the heteropoly acid on carrier
There is the phosphorus that the surface spray concentration of the alumina support of lanthana is 0.5mmol/L to step (2) load obtained
Aqueous tungstic acid solution 50mL, then the dry 2h at 130 DEG C, obtains the catalyst for treating waste gas A.
In the present embodiment, the alumina support in catalyst for treating waste gas A obtained and the lanthana, described miscellaneous more
The mass ratio of acid is 100:4:20.
Embodiment 2
The preparation method of catalyst for treating waste gas provided in this embodiment includes the following steps:
(1) prepared by carrier
It weighs the hole 30g to hold the boehmite for being 0.3g/mL and obtains θ-Al in 950 DEG C of roasting 3h2O3With α-Al2O3It is mixed
The alumina support of synthetic phase；
(2) load of the lanthana on carrier
It takes alumina support made from 10g step (1) and 3.5g lanthana to be added in 100mL water, is stirred at 80 DEG C
4h obtains slurries A；
By above-mentioned slurries A through being milled to D50It is 4 μm, then in 50 DEG C of dry 2h, roasts 3h at 600 DEG C, loaded
There is the alumina support of lanthana；
(3) load of the heteropoly acid on carrier
There is the silicon that the surface spray concentration of the alumina support of lanthana is 0.5mmol/L to step (2) load obtained
The total 50mL of phosphomolybdic acid aqueous solution that aqueous tungstic acid solution and concentration are 0.5mmol/L, wherein silicon tungsten acid solution and phosphomolybdic acid are water-soluble
The volume ratio of liquid is 1:1, then the dry 3h at 90 DEG C, obtains the catalyst for treating waste gas B.
In the present embodiment, the alumina support in catalyst for treating waste gas B obtained and the lanthana, described miscellaneous more
The mass ratio of acid is 100:5:10.
Embodiment 3
The preparation method of catalyst for treating waste gas provided in this embodiment includes the following steps:
(1) prepared by carrier
It weighs the hole 30g to hold the boehmite for being 0.7g/mL and obtains δ-Al in 750 DEG C of roasting 6.5h2O3、θ-Al2O3With α-
Al2O3Multiphase alumina support；
(2) load of the lanthana on carrier
It takes alumina support made from 30g step (1) and 2.2g lanthana to be added in 100mL water, is stirred at 100 DEG C
1h obtains slurries A；
By above-mentioned slurries A through being milled to D50It is 2 μm, then in 50 DEG C of dry 2h, roasts 2h at 650 DEG C, loaded
There is the alumina support of lanthana；
(3) load of the heteropoly acid on carrier
There is the silicon that the surface spray concentration of the alumina support of lanthana is 0.5mmol/L to step (2) load obtained
Molybdic acid aqueous solution 50mL, then the dry 1h at 145 DEG C, obtains the catalyst for treating waste gas C.
In the present embodiment, the alumina support in catalyst for treating waste gas C obtained and the lanthana, described miscellaneous more
The mass ratio of acid is 100:3.5:35.
Embodiment 4
The preparation method of catalyst for treating waste gas provided in this embodiment includes the following steps:
(1) prepared by carrier
It weighs the hole 30g to hold the boehmite for being 0.6g/mL and obtains δ-Al in 900 DEG C of roasting 5h2O3With α-Al2O3It is mixed
The alumina support of synthetic phase；
(2) load of the lanthana on carrier
It takes alumina support made from 25g step (1) and 2g lanthana to be added in 100mL water, stirs 2h at 85 DEG C,
Obtain slurries A；
By above-mentioned slurries A through being milled to D50It is 2 μm, then in 50 DEG C of dry 2h, roasts 2.9h at 640 DEG C, born
It is loaded with the alumina support of lanthana；
(3) load of the heteropoly acid on carrier
There is the silicon that the surface spray concentration of the alumina support of lanthana is 0.5mmol/L to step (2) load obtained
Aqueous tungstic acid solution 50mL, then the dry 2.5h at 100 DEG C, obtains the catalyst for treating waste gas D.
In the present embodiment, the alumina support in catalyst for treating waste gas D obtained and the lanthana, described miscellaneous more
The mass ratio of acid is 100:3.8:13.
Embodiment 5
The preparation method of catalyst for treating waste gas provided in this embodiment includes the following steps:
(1) prepared by carrier
It weighs the hole 30g to hold the boehmite for being 0.7g/mL and obtains δ-Al in 700 DEG C of roasting 3h2O3With α-Al2O3It is mixed
The alumina support of synthetic phase；
(2) load of the lanthana on carrier
It takes alumina support made from 30g step (1) and 2.8g lanthana to be added in 100mL water, is stirred at 95 DEG C
2h obtains slurries A；
By above-mentioned slurries A through being milled to D50It is 3 μm, then in 50 DEG C of dry 2h, roasts 2.3h at 610 DEG C, born
It is loaded with the alumina support of lanthana；
(3) load of the heteropoly acid on carrier
There is the silicon that the surface spray concentration of the alumina support of lanthana is 0.5mmol/L to step (2) load obtained
Aqueous tungstic acid solution 50mL, then the dry 1h at 145 DEG C, obtains the catalyst for treating waste gas E.
In the present embodiment, the alumina support in catalyst for treating waste gas E obtained and the lanthana, described miscellaneous more
The mass ratio of acid is 100:3.8:13.
Comparative example 1
The Aluminium-oxide catalytic material that Chinese patent literature CN 103349979A is prepared, preparation method are as follows：
Aperture is 0.31g/ml, solid content is 70% boehmite 135.7kg, lanthana 3kg are added to
In 1250kg pure water, it is heated to 80 DEG C of stirring 4h；Through being milled to D50It is 2 μm, then through 70 DEG C of dry 20h, is roasted at 700 DEG C
4h obtains the Aluminium-oxide catalytic material.
The group of the material becomes, lanthana 3%, aluminium oxide 97%.
Experimental example 1
Using fixed bed reactors as automotive exhaust catalysis burner to exhaust gas made from the embodiment of the present invention 1~5
It handles Aluminium-oxide catalytic material made from catalyst and comparative example 1 and carries out activity rating, specific determination condition is:It will be obtained
Catalyst A~E is broken into 40~60 mesh with Aluminium-oxide catalytic material made from comparative example 1, CO concentration in the vehicle exhaust of measurement
For 5.0% (V), NO concentration is 3.0% (V).It is 25000h in air speed-1, under conditions of temperature is 200 DEG C, measurement CO's and NO
Conversion ratio.The results are shown in Table 1.
The conversion ratio of CO and NO in 1 vehicle exhaust of table
| Catalyst | CO conversion ratio (%) | NO conversion ratio (%) | |
| Embodiment 1 | Catalyst for treating waste gas A | 90 | 80 |
| Embodiment 2 | Catalyst for treating waste gas B | 88 | 82 |
| Embodiment 3 | Catalyst for treating waste gas C | 87 | 80 |
| Embodiment 4 | Catalyst for treating waste gas D | 89 | 86 |
| Embodiment 5 | Catalyst for treating waste gas E | 90 | 85 |
| Comparative example 1 | Aluminium-oxide catalytic material | 69 | 71 |
As shown in Table 1, the catalyzed conversion effect to automobile exhaust gas for the catalyst for treating waste gas that the present invention is prepared compared with
It is good.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of catalyst for treating waste gas comprising alumina support and the active component being carried on the alumina support,
It is characterized in that,
The alumina support be include δ-Al2O3、θ-Al2O3With α-Al2O3In at least two crystal phases carrier；
The active component is lanthana and heteropoly acid.
2. catalyst for treating waste gas according to claim 1, which is characterized in that the heteropoly acid be phosphotungstic acid, silico-tungstic acid,
One of phosphomolybdic acid or silicomolybdic acid are a variety of.
3. catalyst for treating waste gas according to claim 1 or 2, which is characterized in that the alumina support and the oxygen
Change lanthanum, the mass ratio of the heteropoly acid is 100:(3.5~5):(10~35).
4. a kind of method for preparing the described in any item catalyst for treating waste gas of claims 1 to 3, which is characterized in that including such as
Lower step:
(1) prepared by carrier
Boehmite is obtained into the carrier in 700~950 DEG C of 3~6.5h of roasting；
(2) load of the lanthana on carrier
The carrier made from the step (1) is added to the water with the lanthana, obtains slurries A；
The slurries A is milled to D50It is 2~4 μm, then dries, 2~3h is roasted at 600~650 DEG C, obtaining load has oxidation
The alumina support of lanthanum；
(3) load of the heteropoly acid on carrier
There is the surface of the alumina support of lanthana to spray heteropoly acid aqueous solution to step (2) load obtained, then dries, i.e.,
The catalyst for treating waste gas is made.
5. the preparation method according to claim 4, which is characterized in that in the step (1), the boehmite
0.3~0.7g/mL of Kong Rongwei.
6. preparation method according to claim 4 or 5, which is characterized in that in the step (2), by the step (1)
The carrier obtained is added to the water with the lanthana, and 1~4h is stirred at 80~100 DEG C, obtains slurries A.
7. the preparation method according to claim 4, which is characterized in that in the step (2), the carrier, the oxygen
The mass ratio for changing lanthanum and the water is (10~30):(2.2~3.5):100.
8. according to the described in any item preparation methods of claim 4~7, which is characterized in that described dry in the step (3)
Dry temperature is 90~145 DEG C, the time is 1~3h.
9. a kind of catalyst for treating waste gas being prepared by the described in any item preparation methods of claim 4~8.
10. purposes of described in any item catalyst for treating waste gas in exhaust-gas treatment according to claim 1~3.
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| CN110732321A (en) * | 2019-09-18 | 2020-01-31 | 沈阳化工大学 | Preparation method of silicotungstic acid modified cerium dioxide catalyst |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349979A (en) * | 2013-06-25 | 2013-10-16 | 上海华明高纳稀土新材料有限公司 | Aluminium-oxide catalytic material and preparation method thereof |
| US20170007990A1 (en) * | 2014-04-24 | 2017-01-12 | Tongji University | Honeycomb denitration catalyst for flue gas at 400°c-600°c and preparation method thereof |
| CN106732647A (en) * | 2016-12-02 | 2017-05-31 | 北京三聚环保新材料股份有限公司 | A kind of perovskite type methyl hydride combustion catalyst and preparation method and application |
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2018
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349979A (en) * | 2013-06-25 | 2013-10-16 | 上海华明高纳稀土新材料有限公司 | Aluminium-oxide catalytic material and preparation method thereof |
| US20170007990A1 (en) * | 2014-04-24 | 2017-01-12 | Tongji University | Honeycomb denitration catalyst for flue gas at 400°c-600°c and preparation method thereof |
| CN106732647A (en) * | 2016-12-02 | 2017-05-31 | 北京三聚环保新材料股份有限公司 | A kind of perovskite type methyl hydride combustion catalyst and preparation method and application |
Non-Patent Citations (1)
| Title |
|---|
| 马涛: "具有吸附-分解NOx功能的多酸催化新体系构建及过程特性研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732321A (en) * | 2019-09-18 | 2020-01-31 | 沈阳化工大学 | Preparation method of silicotungstic acid modified cerium dioxide catalyst |
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