DE2926894C2 - Verfahren zur Herstellung eines Denitrierkatalysators - Google Patents
Verfahren zur Herstellung eines DenitrierkatalysatorsInfo
- Publication number
- DE2926894C2 DE2926894C2 DE2926894A DE2926894A DE2926894C2 DE 2926894 C2 DE2926894 C2 DE 2926894C2 DE 2926894 A DE2926894 A DE 2926894A DE 2926894 A DE2926894 A DE 2926894A DE 2926894 C2 DE2926894 C2 DE 2926894C2
- Authority
- DE
- Germany
- Prior art keywords
- udf54
- udf53
- coating
- parts
- catalyst
- 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
Links
- 239000003054 catalyst Substances 0.000 title claims description 59
- 238000000034 method Methods 0.000 title claims description 13
- 230000008569 process Effects 0.000 title claims description 12
- 238000000576 coating method Methods 0.000 claims description 46
- 239000011248 coating agent Substances 0.000 claims description 44
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 29
- 239000000126 substance Substances 0.000 claims description 19
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 18
- 239000000839 emulsion Substances 0.000 claims description 13
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 10
- 238000007654 immersion Methods 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 8
- 229910052681 coesite Inorganic materials 0.000 claims description 7
- 229910052906 cristobalite Inorganic materials 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 229910052682 stishovite Inorganic materials 0.000 claims description 7
- 150000003609 titanium compounds Chemical class 0.000 claims description 7
- 229910052905 tridymite Inorganic materials 0.000 claims description 7
- 239000008119 colloidal silica Substances 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 6
- 150000003606 tin compounds Chemical class 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 24
- 239000000243 solution Substances 0.000 description 16
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 14
- 229910052720 vanadium Inorganic materials 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 11
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 11
- 239000010936 titanium Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 5
- 150000003682 vanadium compounds Chemical class 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910052787 antimony Inorganic materials 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000000499 gel Substances 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- 239000001117 sulphuric acid Substances 0.000 description 4
- 235000011149 sulphuric acid Nutrition 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 3
- 229910003206 NH4VO3 Inorganic materials 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000009477 glass transition Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 description 2
- 239000012876 carrier material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- QUVMSYUGOKEMPX-UHFFFAOYSA-N 2-methylpropan-1-olate;titanium(4+) Chemical compound [Ti+4].CC(C)C[O-].CC(C)C[O-].CC(C)C[O-].CC(C)C[O-] QUVMSYUGOKEMPX-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 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 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Chemical class 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- ALTWGIIQPLQAAM-UHFFFAOYSA-N metavanadate Chemical compound [O-][V](=O)=O ALTWGIIQPLQAAM-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Chemical class 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- OGUCKKLSDGRKSH-UHFFFAOYSA-N oxalic acid oxovanadium Chemical compound [V].[O].C(C(=O)O)(=O)O OGUCKKLSDGRKSH-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 description 1
- UUUGYDOQQLOJQA-UHFFFAOYSA-L vanadyl sulfate Chemical compound [V+2]=O.[O-]S([O-])(=O)=O UUUGYDOQQLOJQA-UHFFFAOYSA-L 0.000 description 1
- 229940041260 vanadyl sulfate Drugs 0.000 description 1
- 229910000352 vanadyl sulfate Inorganic materials 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/024—Multiple impregnation or coating
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
- B01J37/0225—Coating of metal substrates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53082564A JPS5926341B2 (ja) | 1978-07-06 | 1978-07-06 | 多孔質被膜を有する脱硝触媒 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2926894A1 DE2926894A1 (de) | 1980-01-17 |
| DE2926894C2 true DE2926894C2 (de) | 1987-02-19 |
Family
ID=13777977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2926894A Expired DE2926894C2 (de) | 1978-07-06 | 1979-07-03 | Verfahren zur Herstellung eines Denitrierkatalysators |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5926341B2 (fi) |
| BE (1) | BE877182A (fi) |
| CA (1) | CA1131197A (fi) |
| DE (1) | DE2926894C2 (fi) |
| FR (1) | FR2430260A1 (fi) |
| GB (1) | GB2024640B (fi) |
| IT (1) | IT1119768B (fi) |
| NL (1) | NL179552C (fi) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60106535A (ja) * | 1983-11-16 | 1985-06-12 | Mitsubishi Heavy Ind Ltd | 廃ガス処理用触媒 |
| ATE45295T1 (de) * | 1985-08-19 | 1989-08-15 | Siemens Ag | Verfahren zum herstellen eines katalysators zur selektiven reduktion von stickoxiden in abgasen. |
| JPS62237947A (ja) * | 1986-04-09 | 1987-10-17 | Toshiaki Kabe | 触媒体 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3518206A (en) * | 1968-05-17 | 1970-06-30 | Du Pont | Supported catalysts composed of substrate coated with colloidal silica and catalyst |
| GB1490977A (en) * | 1973-12-10 | 1977-11-09 | Atomic Energy Authority Uk | Catalysts |
| NL7400525A (fi) * | 1973-01-27 | 1974-07-30 | ||
| SE464798B (sv) * | 1973-10-24 | 1991-06-17 | Johnson Matthey Co Ltd | Katalysator innefattande ett substrat, ett mellanliggande oxidskikt och ett katalytiskt skikt |
| DE2402519C3 (de) * | 1974-01-19 | 1980-10-09 | Kali-Chemie Ag, 3000 Hannover | Autoabgasreinigungs-Katalysator |
| GB1471138A (en) * | 1974-05-06 | 1977-04-21 | Atomic Energy Authority Uk | Supports for catalyst materials |
| JPS5812057B2 (ja) * | 1974-07-31 | 1983-03-05 | 武田薬品工業株式会社 | シヨクバイソセイブツ |
| JPS524491A (en) * | 1975-06-30 | 1977-01-13 | Hitachi Zosen Corp | Method of preparing catalyst for removing nox by selective catalytic r eduction with ammonia |
| GB1574069A (en) * | 1976-11-09 | 1980-09-03 | Hitachi Shipbuilding Eng Co | Denitrating catalysts |
-
1978
- 1978-07-06 JP JP53082564A patent/JPS5926341B2/ja not_active Expired
-
1979
- 1979-06-01 GB GB7919186A patent/GB2024640B/en not_active Expired
- 1979-06-08 NL NLAANVRAGE7904504,A patent/NL179552C/xx not_active IP Right Cessation
- 1979-06-22 IT IT49522/79A patent/IT1119768B/it active
- 1979-06-22 BE BE2/57900A patent/BE877182A/xx not_active IP Right Cessation
- 1979-06-27 FR FR7916608A patent/FR2430260A1/fr active Granted
- 1979-07-03 DE DE2926894A patent/DE2926894C2/de not_active Expired
- 1979-07-06 CA CA331,302A patent/CA1131197A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2024640A (en) | 1980-01-16 |
| NL179552C (nl) | 1986-10-01 |
| NL179552B (nl) | 1986-05-01 |
| NL7904504A (nl) | 1980-01-08 |
| BE877182A (fr) | 1979-10-15 |
| FR2430260A1 (fr) | 1980-02-01 |
| IT7949522A0 (it) | 1979-06-22 |
| IT1119768B (it) | 1986-03-10 |
| JPS558875A (en) | 1980-01-22 |
| DE2926894A1 (de) | 1980-01-17 |
| GB2024640B (en) | 1983-01-06 |
| CA1131197A (en) | 1982-09-07 |
| FR2430260B1 (fi) | 1983-07-22 |
| JPS5926341B2 (ja) | 1984-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2927246C2 (de) | Plattenförmiger Katalysator zur Reduktion von Stickstoffoxiden in Abgasen | |
| DE69118161T2 (de) | Katalysator und Methode zum Zersetzen von Ozon durch seine Verwendung | |
| DE3619337C2 (fi) | ||
| DE69615228T2 (de) | Adsorbtionsmittel für Stickstoffoxyde | |
| DE4016688A1 (de) | Verfahren zur entfernung von stickstoffoxiden aus abgasen | |
| DE2844294C2 (de) | Metallischer Katalysator | |
| DE2029500A1 (fi) | ||
| DE2629037C2 (de) | Verfahren zur Herstellung von Denitrier-Katalysatoren | |
| DE68918345T2 (de) | Katalysator, verwendbar für die selektive Reduktion von Stickstoffoxiden. | |
| DE2319277A1 (de) | Verfahren zum aufbringen von oxidschichten | |
| DE3826155C2 (fi) | ||
| DE3855307T2 (de) | Verfahren zur Entfernung von Stickoxiden und Katalysator zur Anwendung in diesem Verfahren | |
| DE2362922A1 (de) | Verfahren zur herstellung eines katalysators auf der basis von ruthenium und dabei hergestellte produkte | |
| DE2360724B2 (de) | Katalysator zur Reinigung von Abgasen und Verfahren zu dessen Herstellung | |
| DE2927253C2 (de) | Verfahren zur Herstellung eines Denitrierkatalysators | |
| DE2742709A1 (de) | Verfahren zur herstellung praktisch sphaerischer aluminiumoxidteilchen | |
| DE2926894C2 (de) | Verfahren zur Herstellung eines Denitrierkatalysators | |
| DE2538706C2 (de) | Verfahren zur Reinigung von Autoabgasen | |
| EP0348768B1 (de) | Verfahren zur Entfernung von Stickoxiden aus Verbrennungsabgasen | |
| US4176091A (en) | Denitrating catalysts having porous coating and process for producing same | |
| DE3543719C2 (fi) | ||
| DE2525880C2 (de) | Verfahren zum Entfernen von Stickstoffoxiden aus Abgasen | |
| DE3823089A1 (de) | Pyrolytisch beschichtetes flachglas und verfahren zu seiner herstellung | |
| DE2411888B2 (de) | Verfahren zur beseitigung von stickstoffoxiden in abgasen | |
| DE2363137C3 (de) | Reinigung von Abgasen von Verbrennungsmotoren |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| 8128 | New person/name/address of the agent |
Representative=s name: PAUL, D., DIPL.-ING., PAT.-ANW., 4040 NEUSS |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |