GB958784A - Process for the production of catalytically active coatings on reaction chambers - Google Patents
Process for the production of catalytically active coatings on reaction chambersInfo
- Publication number
- GB958784A GB958784A GB34148/60A GB3414860A GB958784A GB 958784 A GB958784 A GB 958784A GB 34148/60 A GB34148/60 A GB 34148/60A GB 3414860 A GB3414860 A GB 3414860A GB 958784 A GB958784 A GB 958784A
- Authority
- GB
- United Kingdom
- Prior art keywords
- catalyst
- methane
- gases
- evaporating
- ammonia
- 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
- 238000006243 chemical reaction Methods 0.000 title abstract 7
- 238000000576 coating method Methods 0.000 title abstract 7
- 238000000034 method Methods 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 title abstract 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 31
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 20
- 239000003054 catalyst Substances 0.000 abstract 15
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 15
- 239000007789 gas Substances 0.000 abstract 12
- 229910000069 nitrogen hydride Inorganic materials 0.000 abstract 9
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 abstract 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 6
- 229910021529 ammonia Inorganic materials 0.000 abstract 6
- 238000001035 drying Methods 0.000 abstract 6
- 238000001704 evaporation Methods 0.000 abstract 6
- 238000010438 heat treatment Methods 0.000 abstract 6
- 229910052751 metal Inorganic materials 0.000 abstract 6
- 239000002184 metal Substances 0.000 abstract 6
- 229910052697 platinum Inorganic materials 0.000 abstract 6
- 229910052707 ruthenium Inorganic materials 0.000 abstract 6
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 abstract 3
- 230000003213 activating effect Effects 0.000 abstract 3
- 239000004411 aluminium Substances 0.000 abstract 3
- 229910052782 aluminium Inorganic materials 0.000 abstract 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 3
- 239000004927 clay Substances 0.000 abstract 3
- 239000011248 coating agent Substances 0.000 abstract 3
- 229910052593 corundum Inorganic materials 0.000 abstract 3
- 239000006185 dispersion Substances 0.000 abstract 3
- 229910052741 iridium Inorganic materials 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 3
- 229910052762 osmium Inorganic materials 0.000 abstract 3
- 229910052763 palladium Inorganic materials 0.000 abstract 3
- 229910052703 rhodium Inorganic materials 0.000 abstract 3
- 229910052851 sillimanite Inorganic materials 0.000 abstract 3
- 239000002904 solvent Substances 0.000 abstract 3
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 3
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 238000003786 synthesis reaction Methods 0.000 abstract 2
- 101001009074 Homo sapiens Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1 Proteins 0.000 abstract 1
- 102100027376 Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1 Human genes 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/02—Preparation, separation or purification of hydrogen cyanide
- C01C3/0208—Preparation in gaseous phase
- C01C3/0229—Preparation in gaseous phase from hydrocarbons and ammonia in the absence of oxygen, e.g. HMA-process
- C01C3/0233—Preparation in gaseous phase from hydrocarbons and ammonia in the absence of oxygen, e.g. HMA-process making use of fluidised beds, e.g. the Shawinigan-process
-
- 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
- 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
- B01J23/42—Platinum
-
- 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
- B01J23/46—Ruthenium, rhodium, osmium or iridium
- B01J23/462—Ruthenium
-
- 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
-
- 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
-
- 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
- B01J37/0234—Impregnation and coating simultaneously
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In a process for the production of hydrocyanic acid from ammonia and methane at temperatures from 900 DEG to 1400 DEG C., catalytically active coatings are produced on the walls of the reaction chambers by a process comprising treating the walls with a hydrochloric acid solution containing aluminium and a metal of the platinum group (Ru, Rh, Pd, Os, Ir, Pt), evaporating the solvent and drying the deposited material, repeating the treating, evaporating, and drying until sufficient layers of the platinum group metal and Al2O3 have been deposited, heating the coating obtained up to 800 DEG C. in a current of a reducing gas (e.g. NH3, H2) and activating the resulting catalyst by heating at 900 DEG to 1400 DEG C. for several days in such a way that first only ammonia is passed over the catalyst and that methane is added at such a rate that the methane content in the gases, after passage over the catalyst and removal of NH3 and HCN, never exceeds 1% by volume and that not earlier than after 4 days a volume ratio of NH3 to NH4 of 1 to 0.7-0.8 is reached. The reaction chamber may comprise tubes of sillimanite or clay, and may be in the form of two concentric tubes forming an annular space through which the gases pass, all surfaces with which the gases come into contact being coated with the catalyst. In examples the catalyst is a dispersion of platinum and ruthenium in alumina.ALSO:A process for the production of catalytically active coatings on the walls of reaction chambers for the synthesis of hydrocyanic acid from ammonia and methane at temperatures from 900-1400 DEG C. comprises treating the walls with a hydrochloric acid solution containing aluminium and a metal of the platinum group (Ru, Rh, Pd, Os, Ir, Pt), evaporating the solvent and drying the deposited material, repeating the treating, evaporating, and drying until sufficient layers of the platinum group metal and Al2O3 have been deposited, heating the coating obtained up to 800 DEG C. in a current of a reducing gas (e.g. NH3, H2) and activating the resulting catalyst by heating at 900-1400 DEG C. for several days at such a rate that first only ammonia is passed over the catalyst and that methane is added at such a rate that the methane content in the gases, after passage over the catalyst and removal of NH3 and HCN, never exceeds 1% by volume and that not earlier than after 4 days a volume ratio of NH3 to CH4 of 1:0.7-0.8 is reached. The reaction chamber may comprise tubes of sillimanite or clay, and may be in the form of two concentric tubes forming an annular space through which the gases pass, all surfaces with which the gases come into contact being coated with the catalyst. In examples the catalyst is a dispersion of platinum and ruthenium in alumina.ALSO:A process for the production of catalytically active coatings on the walls of reaction chambers for the synthesis of hydrocyanic acid from ammonia and methane at temperatures from 900 to 1400 DEG C. comprises treating the walls with a hydrochloric acid solution containing aluminium and a metal of the platinum group (Ru, Rh, Pd, Os, Ir, Pt), evaporating the solvent and drying the deposited material, repeating the treating, evaporating, and drying until sufficient layers of the platinum group metal and Al2O3 have been deposited, heating the coating obtained up to 800 DEG C. in a current of a reducing gas (e.g. NH3, H2) and activating the resulting catalyst by heating at 900-1400 DEG C. for several days in such a way that first only ammonia is passed over the catalyst and that methane is added at such a rate that the methane content in the gases, after passage over the catalyst and removal of NH3 and HCN1 never exceeds 1% by volume and that not earlier than after four days a volume ratio of NH3 to CH4 of 1 to 0,7-0,8 is reached. The reaction chamber may comprise tubes of sillimanite or clay, and may be in the form of two concentric tubes forming an annular space through which the gases pass, all surfaces with which the gases come into contact being coated with the catalyst. In examples the catalyst is a dispersion of platinum and ruthenium in alumina.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH7925859A CH385175A (en) | 1959-10-09 | 1959-10-09 | Process for the production of catalytically active coatings on reaction spaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB958784A true GB958784A (en) | 1964-05-27 |
Family
ID=4537074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34148/60A Expired GB958784A (en) | 1959-10-09 | 1960-10-05 | Process for the production of catalytically active coatings on reaction chambers |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH385175A (en) |
| GB (1) | GB958784A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3723535A1 (en) * | 1987-07-16 | 1989-01-26 | Degussa | METHOD FOR PRODUCING CYAN HYDROGEN |
| US5437933A (en) * | 1992-02-18 | 1995-08-01 | Johnson Matthey Public Limited Company | Coated ceramic article |
| WO2004076351A1 (en) * | 2003-02-28 | 2004-09-10 | Degussa Ag | Process for the production of hydrogen cyanide by the bma process and catalyst for the implementation thereof |
| WO2006050781A2 (en) * | 2004-11-12 | 2006-05-18 | Degussa Gmbh | Method for producing hydrogen cyanide and a reaction tube used for carrying out said method |
| WO2008000390A1 (en) * | 2006-06-27 | 2008-01-03 | Dsm Ip Assets B.V. | Process for the preparation of nitrogen-containing compounds |
-
1959
- 1959-10-09 CH CH7925859A patent/CH385175A/en unknown
-
1960
- 1960-10-05 GB GB34148/60A patent/GB958784A/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3723535A1 (en) * | 1987-07-16 | 1989-01-26 | Degussa | METHOD FOR PRODUCING CYAN HYDROGEN |
| US4961914A (en) * | 1987-07-16 | 1990-10-09 | Degussa Aktiengesellschaft | Method of preparing hydrogen cyanide |
| US5437933A (en) * | 1992-02-18 | 1995-08-01 | Johnson Matthey Public Limited Company | Coated ceramic article |
| WO2004076351A1 (en) * | 2003-02-28 | 2004-09-10 | Degussa Ag | Process for the production of hydrogen cyanide by the bma process and catalyst for the implementation thereof |
| US7429370B2 (en) | 2003-02-28 | 2008-09-30 | Degussa Ag | Process for the production of hydrogen cyanide by the BMA process and catalyst for the implementation therefor |
| CN100509628C (en) * | 2003-02-28 | 2009-07-08 | 德古萨股份公司 | Process for the production of hydrogen cyanide by the BMA process and catalyst for the implementation thereof |
| WO2006050781A2 (en) * | 2004-11-12 | 2006-05-18 | Degussa Gmbh | Method for producing hydrogen cyanide and a reaction tube used for carrying out said method |
| WO2006050781A3 (en) * | 2004-11-12 | 2007-01-25 | Degussa | Method for producing hydrogen cyanide and a reaction tube used for carrying out said method |
| WO2008000390A1 (en) * | 2006-06-27 | 2008-01-03 | Dsm Ip Assets B.V. | Process for the preparation of nitrogen-containing compounds |
Also Published As
| Publication number | Publication date |
|---|---|
| CH385175A (en) | 1964-12-15 |
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