GB746385A - Improvements in or relating to catalytic hydrogenation - Google Patents
Improvements in or relating to catalytic hydrogenationInfo
- Publication number
- GB746385A GB746385A GB1882253A GB1882253A GB746385A GB 746385 A GB746385 A GB 746385A GB 1882253 A GB1882253 A GB 1882253A GB 1882253 A GB1882253 A GB 1882253A GB 746385 A GB746385 A GB 746385A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sodium
- catalyst
- solution
- carbonate
- arylated
- 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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
- C01B15/01—Hydrogen peroxide
- C01B15/022—Preparation from organic compounds
- C01B15/023—Preparation from organic compounds by the alkyl-anthraquinone process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Alkylated or arylated anthraquinhydrones or alkylated or arylated anthraquinols are produced from alkylated or arylated anthraquinones by hydrogenation in solvent medium in the presence of a catalyst comprising palladium deposited on a siliceous carrier which has been pretreated with an aqueous alkaline solution, e.g. of sodium hydroxide, carbonate or bicarbonate. Quinones specified are 2-ethyl anthraquinone and 2-tertiary butyl anthraquinone. The siliceous carrier may be silica gel, sodium aluminium silicate, or a silica-alumina catalyst. According to the examples, silica gel is pretreated with a boiling solution of sodium carbonate, hydroxide, or carbonate (examples 1, 2, and 5) and artificial sodium aluminium silicate is moistened with sodium bicarbonate solution and then dried (example 4). The treated carrier is palladized in the usual manner. The catalyst may be employed in suspension, a particle size corresponding to a screen aperture between 0.001 and 0.1 being suitable for this purpose, or as a fixed bed, the solution being passed either in co- or counter-current flow. The solvent may be a two-component mixture, the first component being e.g. cyclohexanyl acetate or propionate, or methyl cyclohexanyl acetate or propionate, and the second component being e.g. benzene, toluene or xylene. Specifications 465,070, 508,081, 580,897, 686,574, [all in Group III], 718,305 and 718,306 are referred to.ALSO:In the production of hydrogen peroxide by the successive hydrogenation and oxidation of alkylated or arylated anthraquinones in solvent medium, the hydrogenation is carried out in the presence of a catalyst comprising palladium deposited on a siliceous carrier which has been pre-treated with an aqueous alkaline solution e.g. of sodium hydroxide, carbonate, or bicarbonate. The siliceous carrier may be silica gel, sodium aluminium silicate or a silicaalumina catalyst. According to the examples, silica gel is pretreated with a boiling solution of sodium carbonate, hydroxide or bicarbonate, washed, and dried (Exs. 1, 2 and 5), and artificial sodium aluminium silicate is moistened with sodium bicarbonate solution and then dried (Ex. 4). The treated carrier is palladised in the usual way. The catalyst may be employed in suspension, a particle size corresponding to a screen aperture between 0.001 and 0.1 being suitable for this purpose, or as a fixed bed, the solution being passed either in co- or counter-current flow. Quinones specified are 2-ethyl anthraquinone and 2-tertiary butyl anthraquinone. The solvent may be a two-component mixture, the first component being e.g. cyclohexanyl acetate or propionate, or methyl cyclohexanyl acetate or propionate, and the second compound being e.g. benzene, toluene, or xylene. Specifications 465,070, 508,081, 624,353, 686,574, 718,305 and 718,306 are referred to.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1882253A GB746385A (en) | 1953-07-07 | 1953-07-07 | Improvements in or relating to catalytic hydrogenation |
ES0216244A ES216244A1 (en) | 1953-07-07 | 1954-06-30 | Improvements in or relating to catalytic hydrogenation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1882253A GB746385A (en) | 1953-07-07 | 1953-07-07 | Improvements in or relating to catalytic hydrogenation |
Publications (1)
Publication Number | Publication Date |
---|---|
GB746385A true GB746385A (en) | 1956-03-14 |
Family
ID=10119002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1882253A Expired GB746385A (en) | 1953-07-07 | 1953-07-07 | Improvements in or relating to catalytic hydrogenation |
Country Status (2)
Country | Link |
---|---|
ES (1) | ES216244A1 (en) |
GB (1) | GB746385A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3055838A (en) * | 1957-12-06 | 1962-09-25 | Pittsburgh Plate Glass Co | Method of regenerating a degraded solution, including an autoxidizable quinone |
-
1953
- 1953-07-07 GB GB1882253A patent/GB746385A/en not_active Expired
-
1954
- 1954-06-30 ES ES0216244A patent/ES216244A1/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3055838A (en) * | 1957-12-06 | 1962-09-25 | Pittsburgh Plate Glass Co | Method of regenerating a degraded solution, including an autoxidizable quinone |
Also Published As
Publication number | Publication date |
---|---|
ES216244A1 (en) | 1955-09-01 |
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