CN115400761B - 一种制备具有宽温区的多壳层钒锰钴基nh3-scr脱硝催化剂的方法 - Google Patents
一种制备具有宽温区的多壳层钒锰钴基nh3-scr脱硝催化剂的方法 Download PDFInfo
- Publication number
- CN115400761B CN115400761B CN202110594610.9A CN202110594610A CN115400761B CN 115400761 B CN115400761 B CN 115400761B CN 202110594610 A CN202110594610 A CN 202110594610A CN 115400761 B CN115400761 B CN 115400761B
- Authority
- CN
- China
- Prior art keywords
- catalyst
- manganese
- cobalt
- shell
- vanadium
- 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.)
- Active
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 18
- ZFTOZLBKFCZFLY-UHFFFAOYSA-N [V].[Co].[Mn] Chemical compound [V].[Co].[Mn] ZFTOZLBKFCZFLY-UHFFFAOYSA-N 0.000 title claims abstract description 8
- 229910018669 Mn—Co Inorganic materials 0.000 claims abstract description 23
- 239000013256 coordination polymer Substances 0.000 claims abstract description 17
- 229920001795 coordination polymer Polymers 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 20
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 12
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 8
- 239000011572 manganese Substances 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- FSJSYDFBTIVUFD-SUKNRPLKSA-N (z)-4-hydroxypent-3-en-2-one;oxovanadium Chemical compound [V]=O.C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O FSJSYDFBTIVUFD-SUKNRPLKSA-N 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000010335 hydrothermal treatment Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 17
- 229910052720 vanadium Inorganic materials 0.000 abstract description 12
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000005470 impregnation Methods 0.000 abstract description 4
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001935 vanadium oxide Inorganic materials 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000012018 catalyst precursor Substances 0.000 abstract 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- 239000002243 precursor Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- FSJSYDFBTIVUFD-XHTSQIMGSA-N (e)-4-hydroxypent-3-en-2-one;oxovanadium Chemical compound [V]=O.C\C(O)=C/C(C)=O.C\C(O)=C/C(C)=O FSJSYDFBTIVUFD-XHTSQIMGSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000012495 reaction gas Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001588 bifunctional effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- 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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
-
- 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
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/396—Distribution of the active metal ingredient
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- 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)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
本发明公开了一种制备具有宽温区的多壳层钒锰钴基NH3‑SCR脱硝催化剂的方法。此催化剂的制备过程为:1、溶剂水热法制备Mn‑Co配位聚合物球;2、采用浸渍法将钒前驱体负载在Mn‑Co配位聚合物球,得到催化剂前驱体;3、将催化剂前驱体焙烧得到V2O5/MnCo2O4。本发明通过调控制备的条件,能够得到一种多壳层的V2O5/MnCo2O4催化剂,充分发挥MnCo2O4的低温活性优势和钒氧化物催化剂的高温活性优势,在125~400℃的活性温度范围内展现出>90%的NOx转化率和N2选择性,具有很大的潜力应用于工业。
Description
技术领域
发明涉及一种制备具有宽温区的多壳层钒锰钴基NH3-SCR脱硝催化剂的方法,该催化剂采用包含钒、锰、钴和氧元素,制得的催化剂钒含量在0.5~6%之间,催化剂为多壳层结构。
背景技术
我国化石能源消费日益增加导致大量污染物排放,其中排放的氮氧化物是雾霾、酸雨等环境问题的元凶之一。我国从2013年左右开始逐渐要求一些工厂进行超低排放改造,其中最为关键的指标之一是对氮氧化物的排放限制。氨气选择性催化还原(NH3-SCR)氮氧化物是目前最有效的脱硝技术,采用V2O5-WO3-TiO2催化体系,活性温区一般为350~420℃,在电厂等领域广泛应用。由于我国工业构成复杂,不同工厂、不同工况和负荷下,烟气温度改变较大,钒催化剂的适应性受到限制,且移动源柴油车对尾气脱硝的温区要求更高。因此,研发温区更宽的NH3-SCR催化剂具有重要的意义。
柴油车、轮船等移动源的尾气温度波动范围较大,对NH3-SCR催化剂的温区要求很高,一般需要150~450 ℃。由于高温氨氧化副反应的存在,导致单一的金属氧化物的温区很难达到移动源脱硝的需求。金属氧化物在催化SCR反应时,其内部的氧化还原性位Mn+/M(n -1)+是重要的催化活性位点,反应的起始温度和活性跟其氧化还原性能密切相关。然而,SCR体系中的反应物NH3也会发生氧化,跟NH3-SCR反应竞争,在较低温度时NH3-SCR会占据主导,但是随着温度升高,氨氧化会加速,生成N2O和NO,导致氮氧化物脱硝效率低下。所以,目前尚没有单一的金属氧化物催化剂能够同时实现在低温和高温区域(150~450 ℃)脱硝效率大于90%。即使是一些复合的金属氧化物催化剂,由于在制备的过程中混合较为均匀,更多的也只是体现出相对低温的催化剂的活性,并不能同时兼具低温和高温NH3-SCR活性。
中国专利CN101380578A中公开了一种用于NH3-SCR的复合氧化物催化剂。NH3-SCR活性区间为250~400℃,虽然该催化剂的在高温区活性较好,但是低温活性较差。中国专利CN10898136A公开了一种宽温度窗口NH3-SCR去除柴油机NO的钛基多元金属氧化物催化剂,该专利中催化剂以二氧化钛为载体,以Mn、Ce、V、Fe的氧化物作为主活性,虽然该专利发明的催化剂在250~450℃之间NO转化率达到80%以上,但是实验空速只有10770 h-1,且低温活性仍然较差,无法满足移动源脱硝的需求。
发明内容
本专利的目的主要是将具有低温活性的锰基催化剂和高温活性的钒基催化剂结合起来,通过对催化剂形貌上的控制,低温时反应气体接触具有低温活性的Mn基催化剂,高温时反应气体接触具有高温活性的钒基催化剂,复合两种脱硝催化剂的功能,就可以达到一个比较宽的温区,可以适应柴油车尾气等在低温和高温范围内波动较大的环境,有效脱除氮氧化物。因此,本专利内容主要是设计了一种具有多壳层的双功能催化剂(V2O5/MnCo2O4),活性组分是锰氧化物和钒氧化物,钒氧化物主要在外部的壳层,锰氧化物主要在内部的壳层。
本发明是通过以下技术方案加以实现的:通过水热法、浸渍法调节催化的形貌、元素比例和催化剂活性,钒元素含量在0.5~6%之间,锰元素含量在5~20%之间,其特征在于包括以下过程:
1)制备Mn-Co配位聚合物球:将一定量的 N,N二甲基甲酰胺、丙酮、Mn(NO3)2·4H2O、Co(NO3)2·6H2O和间苯二甲酸混合,搅拌2小时,形成透明溶液。然后,将溶液转移到特氟龙内衬的水热釜中,在水热一定时间,然后降温,离心分离,100 ℃下干燥,得到Mn-Co配位聚合物球;
2)制备多壳层双功能V2O5/MnCo2O4催化剂:Mn-Co配位聚合物球浸渍一定量的含有乙酰丙酮氧钒的丙酮溶液,丙酮溶液在室温下放置至完全挥发,然后样品升温焙烧,得到了负载V2O5的多壳Mn-Co复合氧化物催化剂V2O5/MnCo2O4。
本发明的优点在于:
多壳层的V2O5/MnCo2O4催化剂可以同时拥有钒基催化剂的高温NH3-SCR性能和锰基催化剂的低温NH3-SCR性能,可以在125~400 ℃的活性温度范围内展现出>90%的NOx转化率和N2选择性,并在较宽的温区范围内具有较好的耐水耐硫性能,适用于移动源,这对于NH3-SCR脱硝具有重要意义。
附图说明
图1为本发明实施例1得到的NO转化率随温度变化曲线图。
图2为本发明实施例2得到的NO转化率随温度变化曲线图。
具体实施方式
下面通过具体实施例和附图对本发明做进一步说明。以下实验均是在实验室小批量进行,该催化剂制备方法操作较为简单。
实施例1
将25 ml N,N二甲基甲酰胺、25 ml丙酮、0.18 g Mn(NO3)2·4H2O、0.29 g Co(NO3)2·6H2O和0.25 g间苯二甲酸混合,形成透明溶液。然后,将溶液转移到特氟龙内衬的水热釜中,在160 ℃下加热4 h。降温至室温后,离心分离,100 ℃下干燥 6 h,得到Mn-Co配位聚合物球(Mn-Co CPs)。以5 ℃/min的速率将Mn-Co CPs升温至500 ℃,并在500℃下煅烧30 min,得到多壳Mn-Co混合氧化物催化剂MnCo2O4。0.5 g Mn-Co CPs浸渍 1 ml含有0.02 gVO(acac)2和0.05 g H2C2O4的丙酮溶液,丙酮溶液在25 ℃下放置24 h至完全挥发,然后样品以5 ℃/min 升温至500 ℃并煅烧30 min,得到了负载2%V2O5的多壳层Mn-Co复合氧化物催化剂。
本实施例中制得的催化剂取0.15 g,置于内径为0.4 mm的固定床反应器中,体积空速为30000 h-1,NO和NH3浓度均为1000 ppm,在125~400℃范围内,脱硝效率为>90%,效果较好。
实施例2
本实施例是在实施例1的基础上改变钒的含量。
将25 ml N,N二甲基甲酰胺、25 ml丙酮、0.18 g Mn(NO3)2·4H2O、0.29 g Co(NO3)2·6H2O和0.25 g间苯二甲酸混合,形成透明溶液。然后,将溶液转移到特氟龙内衬的水热釜中,在160 ℃下加热4 h。降温至室温后,离心分离,100 ℃下干燥 6 h,得到Mn-Co配位聚合物球(Mn-Co CPs)。以5 ℃/min的速率将Mn-Co CPs升温至500 ℃,并在500℃下煅烧30 min,得到多壳Mn-Co混合氧化物催化剂MnCo2O4。0.5 g Mn-Co CPs浸渍 0.5 ml含有0.02g VO(acac)2和0.05 g H2C2O4的丙酮溶液,丙酮溶液在25 ℃下放置24 h至完全挥发,然后样品以5 ℃/min 升温至500 ℃并煅烧30 min,得到了负载1%V2O5的多壳层Mn-Co复合氧化物催化剂。
本实施例中制得的催化剂取0.15 g,置于内径为0.4 mm的固定床反应器中,体积空速为30000 h-1,NO和NH3浓度均为1000 ppm,在125~325℃范围内,脱硝效率为>90%。
Claims (4)
1.一种制备具有宽温区的多壳层钒锰钴基NH3-SCR脱硝催化剂的方法,通过水热法、浸渍法调节催化剂的形貌、元素比例和催化剂活性,钒元素质量含量在0.5~6%之间,锰元素含量在5~20%之间,其特征在于包括以下过程:
步骤一制备Mn-Co配位聚合物球:将一定量的N,N二甲基甲酰胺、丙酮、Mn(NO3)2·4H2O、Co(NO3)2·6H2O和间苯二甲酸混合,搅拌2小时,形成透明溶液,然后,将溶液转移到特氟龙内衬的水热釜中,再水热一定时间,然后降温,离心分离,100℃下干燥,得到Mn-Co配位聚合物球;
步骤二制备多壳层双功能V2O5/MnCo2O4催化剂:Mn-Co配位聚合物球浸渍一定量的含有乙酰丙酮氧钒的丙酮溶液,丙酮溶液在室温下放置至完全挥发,然后样品升温焙烧,得到了负载V2O5的多壳Mn-Co复合氧化物催化剂V2O5/MnCo2O4。
2.按照权利要求1所述的制备具有宽温区的多壳层钒锰钴基NH3-SCR脱硝催化剂的方法,其特征在于步骤一Mn-Co配位聚合物球的锰和钴元素摩尔比为1:0.5~4。
3.按照权利要求1所述的制备具有宽温区的多壳层钒锰钴基NH3-SCR脱硝催化剂的方法,其特征在于步骤一水热过程温度为110~200℃。
4.按照权利要求1所述的制备具有宽温区的多壳层钒锰钴基NH3-SCR脱硝催化剂的方法,其特征在于步骤二焙烧温度在300~700℃之间。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110594610.9A CN115400761B (zh) | 2021-05-28 | 2021-05-28 | 一种制备具有宽温区的多壳层钒锰钴基nh3-scr脱硝催化剂的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110594610.9A CN115400761B (zh) | 2021-05-28 | 2021-05-28 | 一种制备具有宽温区的多壳层钒锰钴基nh3-scr脱硝催化剂的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN115400761A CN115400761A (zh) | 2022-11-29 |
CN115400761B true CN115400761B (zh) | 2023-06-27 |
Family
ID=84155029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110594610.9A Active CN115400761B (zh) | 2021-05-28 | 2021-05-28 | 一种制备具有宽温区的多壳层钒锰钴基nh3-scr脱硝催化剂的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115400761B (zh) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104437538A (zh) * | 2014-12-02 | 2015-03-25 | 南开大学 | 一种低温高效脱硝催化剂MnCo2O4的制备方法 |
CN107570205A (zh) * | 2017-10-23 | 2018-01-12 | 上海歌通实业有限公司 | 一种改性Beta分子筛催化剂的制备方法 |
CN109012703A (zh) * | 2018-09-21 | 2018-12-18 | 四川大学 | 一种制备铁硫钛基高温nh3-scr脱硝催化剂的新方法 |
WO2019206870A1 (en) * | 2018-04-23 | 2019-10-31 | Basf Corporation | A selective catalytic reduction catalyst for the treatment of an exhaust gas of a diesel engine |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11827757B2 (en) * | 2018-02-20 | 2023-11-28 | Ut-Battelle, Llc | Carbon fiber-nanoparticle composites with electromechanical properties |
-
2021
- 2021-05-28 CN CN202110594610.9A patent/CN115400761B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104437538A (zh) * | 2014-12-02 | 2015-03-25 | 南开大学 | 一种低温高效脱硝催化剂MnCo2O4的制备方法 |
CN107570205A (zh) * | 2017-10-23 | 2018-01-12 | 上海歌通实业有限公司 | 一种改性Beta分子筛催化剂的制备方法 |
WO2019206870A1 (en) * | 2018-04-23 | 2019-10-31 | Basf Corporation | A selective catalytic reduction catalyst for the treatment of an exhaust gas of a diesel engine |
CN109012703A (zh) * | 2018-09-21 | 2018-12-18 | 四川大学 | 一种制备铁硫钛基高温nh3-scr脱硝催化剂的新方法 |
Non-Patent Citations (2)
Title |
---|
A Bifunctional Multishell Catalyst with a Wide Operating Temperature Window for NOx Abatement by Ammonia-Selective Catalytic Reduction;Lei Song;《Ind. Eng. Chem. Res.》;第61卷;5410-5418 * |
低温抗毒性SCR催化剂的制备与性能研究;戎丽;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》;B027-404 * |
Also Published As
Publication number | Publication date |
---|---|
CN115400761A (zh) | 2022-11-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105561983A (zh) | 一种Mn-Ce负载型低温脱硝催化剂及其制备方法 | |
CN107456964A (zh) | 用于碳氢化合物低温氧化的超大比表面积钙钛矿型复合氧化物催化剂及其制备 | |
CN105771961B (zh) | 一种CeO2纳米管担载的脱硝催化剂及其制备方法 | |
CN105833901A (zh) | 一种PrOx-MnOx/SAPO-34低温SCR烟气脱硝催化剂及其制备方法与应用 | |
CN110280250B (zh) | 一种沸石咪唑骨架材料衍生金属氧化物的制备方法及其应用 | |
CN104941655B (zh) | 一种新型铁钨复合氧化物脱硝催化剂及其制备和应用 | |
CN105797714B (zh) | 一种钬改性的锰钛复合氧化物低温脱硝催化剂及其制备方法 | |
CN108671946A (zh) | 磷掺杂铈钛催化剂、制备及其在选择性催化还原脱硝中的应用 | |
CN103657632A (zh) | 一种碱液处理整体式氧化铬催化剂及制备方法和应用 | |
CN110314681A (zh) | 一种基于高岭土的低温scr脱硝催化剂及其制备方法 | |
CN108097239B (zh) | 一种新型煤焦二氧化碳气化催化剂及其制备方法 | |
CN101433837B (zh) | 宽活性温度窗口的scr催化剂及其制备方法和应用 | |
CN106513005A (zh) | 一种铁基复合氧化物催化剂的制备方法 | |
CN108993481A (zh) | 一种棒状氧化铈负载的钐锰复合氧化物催化剂及制备方法 | |
CN105879869A (zh) | 一种用于氢气选择性还原氮氧化物的催化剂及其制备方法和应用 | |
CN113877611A (zh) | 一种磷酸改性锰氧化物负载型催化剂及制备方法 | |
CN115400761B (zh) | 一种制备具有宽温区的多壳层钒锰钴基nh3-scr脱硝催化剂的方法 | |
CN105903478A (zh) | 一种较宽使用温度的中低温scr催化剂及其制备方法 | |
CN105032398B (zh) | 一种片状形貌为载体V2O5/TiO2低温NH3‑SCR催化剂的制备及其在脱硝中的应用 | |
CN109046324B (zh) | 一种以介孔氧化铈为载体的中低温脱硝催化剂及制备方法 | |
CN115999543A (zh) | 一种多壳层结构co-scr脱硝催化剂及其制备方法 | |
KR102558168B1 (ko) | 암모니아 산화용 촉매 및 이의 제조 방법 | |
CN102188979A (zh) | 一种催化氧化法烟气脱硝催化剂及其制备方法 | |
CN108236948A (zh) | 一种低温锰基氧化物催化剂的制备方法 | |
CN107790122A (zh) | 一种钼锰锆脱硝催化剂及其制备方法和应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |