DE1959137A1 - Pt catalyst for ammonia oxidn - Google Patents
Pt catalyst for ammonia oxidnInfo
- Publication number
- DE1959137A1 DE1959137A1 DE19691959137 DE1959137A DE1959137A1 DE 1959137 A1 DE1959137 A1 DE 1959137A1 DE 19691959137 DE19691959137 DE 19691959137 DE 1959137 A DE1959137 A DE 1959137A DE 1959137 A1 DE1959137 A1 DE 1959137A1
- Authority
- DE
- Germany
- Prior art keywords
- catalyst
- weight
- platinum
- ammonia
- rhodium
- 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.)
- Pending
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 27
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims description 18
- 229910021529 ammonia Inorganic materials 0.000 title claims description 9
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 14
- 229910052703 rhodium Inorganic materials 0.000 claims abstract description 12
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 5
- 229910052707 ruthenium Inorganic materials 0.000 claims abstract description 4
- 229910052737 gold Inorganic materials 0.000 claims abstract description 3
- 229910052741 iridium Inorganic materials 0.000 claims abstract description 3
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 25
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 16
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 12
- 239000010948 rhodium Substances 0.000 claims description 11
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 11
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 5
- 229910017604 nitric acid Inorganic materials 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- -1 Platinum Metals Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
- C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
- C01C1/0411—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst characterised by the 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
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
-
- 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
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/58—Fabrics or filaments
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
Description
Beschreibung zu der Patentanmeldung KATALYSATOR MIT ERNIEDRIGTEM PLATINGEHALT ZUR OXYDATION VON AMMONIAK ZU STICKSTOFFOXID Die vorliegende Erfindung bezieht sich auf Katalysatoren, die bei der Herstellung von Salpetersäure für die Oxydation von ammoniak zu Stickstoffoxid verwendet werden.Description of the patent application CATALYST WITH LOW PLATING CONTENT FOR THE OXYDATION OF AMMONIA TO NITROGEN OXIDE The present invention relates on catalysts used in the production of nitric acid for the oxidation of ammonia can be used to make nitric oxide.
Es sind bekannt großtechnische Katalysatoren für die Oxydation von Ammoniak zu Stiokstoffoxid, die Netze aus Legierungen darstellen, die 90-95 Gew.% Platin und 5-10 Gew.% Rhodium enthalten (siehe "Handbuch der Salpetersäuretechnik" Bd.2, Seite 42, 1969, Verlag "Chimija", Moskau, in Russisch; H.Conner, Platinum Metals Review, 11, Nr. 1, Seite 60, 1967). There are known large-scale catalysts for the oxidation of Ammonia to nitrogen oxide, which represent networks of alloys that contain 90-95% by weight Contains platinum and 5-10% by weight of rhodium (see "Handbook of Nitric Acid Technology" Vol. 2, page 42, 1969, publishing house "Chimija", Moscow, in Russian; H.Conner, Platinum Metals Review, 11, No. 1, page 60, 1967).
Bekannt sind auch Katalysatoren in Form von Netzen aus Legierungen, die 93 Ge.% Platin, 3 Gew.% Rhodium und 4 Ges.% Palladium enthalten (siehe W.I.Atroschtschenko, S.J.Kargin "Technologie der Salpetersäure", Seite 39, 1963, "Goschimizdat Verlag Moskau, in Russisch). Also known are catalysts in the form of nets made of alloys, which contain 93% by weight platinum, 3% by weight rhodium and 4% by weight palladium (see W.I.Atroschtschenko, S.J. Kargin "Technologie der Nitric Acid", page 39, 1963, "Goschimizdat Verlag Moscow, in Russian).
Die bekannten Katalysatoren enthalten größere Mengen von Mangel- und teueren Metallen, von Platin und Rhodium. The known catalysts contain larger amounts of deficiency and expensive metals, from platinum and rhodium.
Das Ziel der vorliegenden Erfindung ist die Beseitigung des genannten Nachteils. The aim of the present invention is to eliminate the aforesaid Disadvantage.
Der Erfindung wurde die Aufgabe zugrundegelegt, einen Katalysator für die Oxydation von Ammoniak zu Stickstoffoxfd zu entwickeln, der Netze aus Legierungen auf der Grundlage von Platin, Palladium und Rhodium darstellt, die eine erniedrigte Menge von Mangel- und koRtspieligen Metallen, von Platin und Rhodium enthalten. The invention was based on the object of a catalyst For the oxidation of ammonia to nitrogen oxide to develop nets made of alloys based on platinum, palladium and rhodium, which represents a degraded Contains an abundance of deficient and deficient metals, such as platinum and rhodium.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß man einen Katalysator verwendet, der 75-82 Gew.% Platin, 15-22 Gew.S Palladium, 2-3,5 Gew.% Rhodium sowie 0,05-0,15 Gew.S Gold, Eisen und Iridium enthält. This object is achieved by the fact that one Catalyst used that contains 75-82% by weight of platinum, 15-22% by weight of palladium, 2-3.5% by weight Contains rhodium and 0.05-0.15 wt. S gold, iron and iridium.
In dem erfindungsgemäßen Katalysator ist ein Teil von Platin und Rhodium durch aktiveres Palladium ersetzt, was nicht nur zu einer Verbilligung des Katalysators führt, sondern auch etwas die Aktivität des letzteren erhöht. In the catalyst of the present invention, part of platinum is and Rhodium replaced by more active palladium, which not only makes the Catalyst, but also slightly increases the activity of the latter.
Man verwendet zweckmäßig einen Katalysator, der neben den genannten Komponenten auch 0,15-2 Gew.% Ruthenium enthält. Durch die Vereinigung von Ruthenium mit den übrigen Komponenten des Katalysators wird es möglich, die Lebensdauer des Katalysators zu verlängern. It is expedient to use a catalyst which, in addition to those mentioned Components also contains 0.15-2 wt.% Ruthenium. By the union of ruthenium with the other components of the catalyst it is possible to extend the life of the To extend the catalyst.
Der erfindungsgemäße Katalysator wird auf konventionellen Ausrüstungen in Form von Netzen beliebigen Durchmessers aus einem Dreht von 0,07-0,09 mm Dicke mit einer Maschenzahl von 1024 in 1 cm2 hergestellt. The catalyst of the invention is run on conventional equipment in the form of nets of any diameter from a twist of 0.07-0.09 mm thick made with a number of meshes of 1024 in 1 cm2.
Der Katalysator ist für die Oxydation von ammoniak in den Systemen zur Herstellung von Salpetersäure bestimmt, die bei atmosphärischem und erhöhten Druck (bis 6 at) und Temperaturen bis 850°C betrieben werden. Der genannte Katalysator wurde auf großtechnischen Kontaktapparaten mit Ammoniak-Luft-Gemischen verschiedenen Reinheitgrades bei verschiedenen Belastungen geprüft, Dabei betrug der Umwandlungsgrad von ammoniak in Stickstoffoxid mindestens 97-98%. The catalyst is for the oxidation of ammonia in the systems intended for the production of nitric acid at atmospheric and elevated levels Pressure (up to 6 at) and temperatures up to 850 ° C can be operated. The said catalyst was different on large-scale contact apparatus with ammonia-air mixtures Degree of purity tested at various loads, the degree of conversion was of ammonia in nitric oxide at least 97-98%.
Der erfindungsgemäße Katalysator besttzt folgende Vorteile gegenüber dem Platin-Rhodium- und anderen bekannten Katalysatoren: 1. Erniedrigter Gehalt an Platin und Rhodium (weniger um 12-20 Gew.%). wodurch der Katalysator zugänglicher und wirtschaftlicher wird. The catalyst according to the invention has the following advantages over the platinum-rhodium and other known catalysts: 1. Decreased content of platinum and rhodium (less by 12-20% by weight). making the catalyst more accessible and becomes more economical.
2. Das Gewicht des Katalysators ist um 8-10% geringer bei gleicher katalytischer Oberfläche. 2. The weight of the catalyst is 8-10% less for the same catalytic surface.
3. Die spezifischen Verluste pro 1 Tonne Salpetersäure sind um 12-20% geringer gegenüber den Platin-R@odium-Katalysatoren, die 93-95 Gew.% Platin und 5-7 Gew.% Rhodium enthalten. 3. The specific losses per 1 ton of nitric acid are around 12-20% lower compared to the platinum-R @ odium catalysts, the 93-95 wt.% platinum and Contains 5-7% by weight of rhodium.
4. Der Katalysator ist weniger empfindlich gegen die Wirkung katalytischer Gifte. 4. The catalyst is less sensitive to the catalytic action Poisons.
5. Be@ gleicher Belastung beträgt der Umwandlungsgrad des Ammoniaks in Schwefeloxid in Gegenwart von erfindungsgemäße@ Katalysator mindestens 97-98%, was den Umwandlungsgraß an @in ihrer Zusammonsetzung) besser@@@ Platin-Rhodium-Katalysatoron etwas übersteigt. 5. With the same load, the degree of conversion of the ammonia is in sulfur oxide in the presence of @ catalyst according to the invention at least 97-98%, what the conversion rate to @ in their composition) better @@@ platinum-rhodium catalyst something exceeds.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691959137 DE1959137A1 (en) | 1969-11-25 | 1969-11-25 | Pt catalyst for ammonia oxidn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691959137 DE1959137A1 (en) | 1969-11-25 | 1969-11-25 | Pt catalyst for ammonia oxidn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1959137A1 true DE1959137A1 (en) | 1971-05-27 |
Family
ID=5752021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19691959137 Pending DE1959137A1 (en) | 1969-11-25 | 1969-11-25 | Pt catalyst for ammonia oxidn |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1959137A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6649134B2 (en) | 2000-05-15 | 2003-11-18 | W. C. Heraeus Gmbh & Co. Kg | Method and apparatus for reducing nitrous oxide |
-
1969
- 1969-11-25 DE DE19691959137 patent/DE1959137A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6649134B2 (en) | 2000-05-15 | 2003-11-18 | W. C. Heraeus Gmbh & Co. Kg | Method and apparatus for reducing nitrous oxide |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHJ | Non-payment of the annual fee |