GB664741A - Improvements in or relating to the production of formaldehyde - Google Patents
Improvements in or relating to the production of formaldehydeInfo
- Publication number
- GB664741A GB664741A GB1996049A GB1996049A GB664741A GB 664741 A GB664741 A GB 664741A GB 1996049 A GB1996049 A GB 1996049A GB 1996049 A GB1996049 A GB 1996049A GB 664741 A GB664741 A GB 664741A
- Authority
- GB
- United Kingdom
- Prior art keywords
- formaldehyde
- reaction zone
- pressure
- methane
- oxides
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
- C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
- C07C45/33—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Formaldehyde is produced by the oxidation of methane using oxides of nitrogen as catalyst by passing methane mixed with air and/or oxygen and with the catalyst through a heated reaction zone maintained at a pressure below atmospheric, and then separating formaldehyde from the gases leaving the reaction zone. The pressure may be between 0.05 and 0.9 atmospheres. A 38-40 per cent solution of formaldehyde in water may be obtained by scrubbing the gases leaving the reaction zone with water either at the reaction pressure or at atmospheric pressure. Paraformaldehyde can be obtained directly by chilling the product gases to, for example, 0 DEG C. In the examples mixtures of methane, oxygen and oxides of nitrogen are passed into a heated reaction zone at various temperatures and at various pressures below atmospheric pressure to give formaldehyde.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1996049A GB664741A (en) | 1949-07-29 | 1949-07-29 | Improvements in or relating to the production of formaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1996049A GB664741A (en) | 1949-07-29 | 1949-07-29 | Improvements in or relating to the production of formaldehyde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB664741A true GB664741A (en) | 1952-01-09 |
Family
ID=10137997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1996049A Expired GB664741A (en) | 1949-07-29 | 1949-07-29 | Improvements in or relating to the production of formaldehyde |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB664741A (en) |
-
1949
- 1949-07-29 GB GB1996049A patent/GB664741A/en not_active Expired
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