GB991564A - Production of phenols - Google Patents
Production of phenolsInfo
- Publication number
- GB991564A GB991564A GB1298362A GB1298362A GB991564A GB 991564 A GB991564 A GB 991564A GB 1298362 A GB1298362 A GB 1298362A GB 1298362 A GB1298362 A GB 1298362A GB 991564 A GB991564 A GB 991564A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkyl
- cyclohexanol
- phenol
- alkaline solution
- range
- 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
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/06—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by conversion of non-aromatic six-membered rings or of such rings formed in situ into aromatic six-membered rings, e.g. by dehydrogenation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/06—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by conversion of non-aromatic six-membered rings or of such rings formed in situ into aromatic six-membered rings, e.g. by dehydrogenation
- C07C37/07—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by conversion of non-aromatic six-membered rings or of such rings formed in situ into aromatic six-membered rings, e.g. by dehydrogenation with simultaneous reduction of C=O group in that ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
A phenol or alkyl phenol (in which the alkyl radical has 1 to 6 carbons) is made by catalytic dehydrogenation in the vapour phase of a crude mixture derived from cyclohexane or an alkyl-cyclohexane by oxidation and containing cyclohexanone and cyclohexanol or alkyl nuclear substituted derivatives of cyclohexanone and cyclohexanol, characterized in that the said crude mixture is washed with an alkaline solution prior to bringing it into contact with the dehydrogenation catalyst. Preferably the crude mixture is washed with an alkaline solution, vaporized, diluted with hydrogen in an amount in the range of 1 to 15 mols. of hydrogen per mol. of total cyclohexanone and cyclohexanol therein, contacted with a dehydrogenation catalyst at a temperature in the range of 250 DEG to 425 DEG C. at a liquid hourly space velocity in the range 0.3 to 2.5 and the phenol is recovered from the reaction product. The catalyst may be platinum-on-carbon, or other catalysts such as Pd, Ru, Rh, Ni or Co. The alkaline solution may be NaOH, but KOH, Na2CO3, NaHCO3, K2CO3, ethanolamine, triethanolamine, pyridine and quaternary alkyl ammonium hydroxides are also mentioned.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11112261A | 1961-04-11 | 1961-04-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB991564A true GB991564A (en) | 1965-05-12 |
Family
ID=22336737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1298362A Expired GB991564A (en) | 1961-04-11 | 1962-04-04 | Production of phenols |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE616103A (en) |
| CH (1) | CH406240A (en) |
| DE (1) | DE1223847B (en) |
| ES (1) | ES276340A1 (en) |
| GB (1) | GB991564A (en) |
| LU (1) | LU41517A1 (en) |
| NL (1) | NL277057A (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE974067C (en) * | 1949-11-06 | 1960-09-01 | Ici Ltd | Process for the production of phenols |
| CH347186A (en) * | 1956-06-12 | 1960-06-30 | Inventa Ag | Process for the oxidation of cyclohexane |
-
1962
- 1962-04-04 GB GB1298362A patent/GB991564A/en not_active Expired
- 1962-04-06 BE BE616103A patent/BE616103A/en unknown
- 1962-04-09 LU LU41517D patent/LU41517A1/xx unknown
- 1962-04-10 ES ES276340A patent/ES276340A1/en not_active Expired
- 1962-04-11 DE DES78945A patent/DE1223847B/en active Pending
- 1962-04-11 NL NL277057D patent/NL277057A/de unknown
- 1962-04-11 CH CH440362A patent/CH406240A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE616103A (en) | 1962-10-08 |
| LU41517A1 (en) | 1963-10-09 |
| CH406240A (en) | 1966-01-31 |
| DE1223847B (en) | 1966-09-01 |
| ES276340A1 (en) | 1962-06-01 |
| NL277057A (en) | 1964-10-26 |
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