GB636743A - Improvements in and relating to the dehydrogenation of secondary alcohols to ketones - Google Patents
Improvements in and relating to the dehydrogenation of secondary alcohols to ketonesInfo
- Publication number
- GB636743A GB636743A GB9392/47A GB939247A GB636743A GB 636743 A GB636743 A GB 636743A GB 9392/47 A GB9392/47 A GB 9392/47A GB 939247 A GB939247 A GB 939247A GB 636743 A GB636743 A GB 636743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- catalyst
- hydrogen
- dehydrogenated
- ignited
- copper
- 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
- C07C45/002—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by dehydrogenation
-
- 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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/80—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with zinc, cadmium or mercury
-
- 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
- Y02P20/584—Recycling of catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Aliphatic secondary alcohols are dehydrogenated to the corresponding ketones at elevated temperatures using a catalyst comprising copper and zinc oxide in proportions, expressed as a molecular ratio of cupric oxide to zinc oxide, in the range 2 : 1 to 1 : 2. The alcohols, anhydrous or mixed with water, for example in azeotropic proportions, may be vaporized by the passage of hydrogen and preheated before feeding to the reaction zone. The catalyst may be prepared by coprecipitation by alkali metal hydroxide or carbonate from water soluble salts of copper and zinc, e.g. nitrate or sulphate. After washing and drying it is ignited, pelleted and reduced by hydrogen at 300 DEG C. The presence of alkali in the catalyst in an amount expressed as sodium oxide, of not greater than 0.21 by weight, improves the yield and conversion and lengthens the life. The catalyst is washed to the required alkali content, dried, ignited, if desired, sieved and admixed with graphite, pelleted and reduced as above. The catalyst may be reactivated, after contamination by carbon, by treatment with air or air-nitrogen mixtures at 500 DEG C., followed by reduction with hydrogen at 300 DEG C. In examples, isopropanol is dehydrogenated to acetone, and secondary butanol to methyl ethyl ketone.ALSO:Aliphatic secondary alcohols are dehydrogenated to the corresponding ketones at elevated temperatures, e.g. 300-440 DEG C., and atmospheric, subatmospheric or superatmospheric pressure, using a catalyst comprising copper and zinc oxide in proportions, expressed as a molecular ratio of cupric oxide to zinc oxide, in the range 2 : 1 to 1 : 2. The alcohols, anhydrous or mixed with water, for example in azeotropic proportions, may be vaporized by the passage of hydrogen, and preheated before feeding to the reaction zone. The catalyst, which may comprise inert supports, e.g. kieselguhr or pumice, may be prepared by co-precipitation by alkali metal hydroxide or carbonate from water soluble salts of copper and zinc, e.g. nitrate or sulphate. After washing and drying it is ignited and reduced by hydrogen at 300 DEG C. The presence of alkali in the catalyst in an amount expressed as sodium oxide, of not greater than 0.2 per cent by weight, improves the yield and conversion. The catalyst is washed to the required alkali content, dried, ignited and may be sieved and admixed with a little graphite, pelleted and reduced as above. In examples, isopropanol is dehydrogenated to acetone, and secondary butanol to methyl ethyl ketone.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR964317D FR964317A (en) | 1947-04-09 | ||
GB9392/47A GB636743A (en) | 1947-04-09 | 1947-04-09 | Improvements in and relating to the dehydrogenation of secondary alcohols to ketones |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9392/47A GB636743A (en) | 1947-04-09 | 1947-04-09 | Improvements in and relating to the dehydrogenation of secondary alcohols to ketones |
Publications (1)
Publication Number | Publication Date |
---|---|
GB636743A true GB636743A (en) | 1950-05-03 |
Family
ID=9871095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9392/47A Expired GB636743A (en) | 1947-04-09 | 1947-04-09 | Improvements in and relating to the dehydrogenation of secondary alcohols to ketones |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR964317A (en) |
GB (1) | GB636743A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2835706A (en) * | 1958-05-20 | Secondary | ||
DE1155429B (en) * | 1957-05-02 | 1963-10-10 | Engelhard Ind Inc | Process for the production of aldehydes or ketones by catalytic dehydrogenation of primary or secondary alcohols |
EP0127874A2 (en) * | 1983-06-01 | 1984-12-12 | Lehigh University | Catalyst and method for production of alkylamines |
EP0204046A2 (en) * | 1985-05-31 | 1986-12-10 | Industrial Technology Research Institute | Process and catalyst for the conversion of cyclohexanol to cyclohexanone |
CN117548111A (en) * | 2023-10-25 | 2024-02-13 | 广东绿峰能源科技有限公司 | Catalyst for hydrogen production from natural gas and preparation method and application thereof |
-
0
- FR FR964317D patent/FR964317A/fr not_active Expired
-
1947
- 1947-04-09 GB GB9392/47A patent/GB636743A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2835706A (en) * | 1958-05-20 | Secondary | ||
DE1155429B (en) * | 1957-05-02 | 1963-10-10 | Engelhard Ind Inc | Process for the production of aldehydes or ketones by catalytic dehydrogenation of primary or secondary alcohols |
EP0127874A2 (en) * | 1983-06-01 | 1984-12-12 | Lehigh University | Catalyst and method for production of alkylamines |
EP0127874A3 (en) * | 1983-06-01 | 1985-10-02 | Lehigh University | Catalyst and method for production of alkylamines |
EP0204046A2 (en) * | 1985-05-31 | 1986-12-10 | Industrial Technology Research Institute | Process and catalyst for the conversion of cyclohexanol to cyclohexanone |
EP0204046A3 (en) * | 1985-05-31 | 1987-09-09 | Industrial Technology Research Institute | Process and catalyst for the conversion of cyclohexanol to cyclohexanone |
CN117548111A (en) * | 2023-10-25 | 2024-02-13 | 广东绿峰能源科技有限公司 | Catalyst for hydrogen production from natural gas and preparation method and application thereof |
CN117548111B (en) * | 2023-10-25 | 2024-06-11 | 广东绿峰能源科技有限公司 | Catalyst for hydrogen production from natural gas and preparation method and application thereof |
Also Published As
Publication number | Publication date |
---|---|
FR964317A (en) | 1950-08-10 |
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