GB793004A - Improvements in or relating to the hydrogenation of alkylanthraquinones - Google Patents
Improvements in or relating to the hydrogenation of alkylanthraquinonesInfo
- Publication number
- GB793004A GB793004A GB146956A GB146956A GB793004A GB 793004 A GB793004 A GB 793004A GB 146956 A GB146956 A GB 146956A GB 146956 A GB146956 A GB 146956A GB 793004 A GB793004 A GB 793004A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anthraquinone
- alkylated
- butyl
- hydrogenation
- hydrogenated
- 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
In the process of the parent Specification, wherein an alkylated anthraquinone is hydrogenated in solution in the presence of metallic palladium on activated alumina catalyst, and the alkylated anthrahydroquinone produced is oxidized to produce hydrogen peroxide and regenerate the alkylated anthraquinone, which is recycled to the hydrogenation, the water content of the mixture in the hydrogenator is maintained within the range corresponding with relative humidities in the gas phase of 40-98 per cent. The anthraquinones may be 2-methyl-, 2-ethyl-, 2-n-propyl-, 2-iso-propyl-, 2-sec.-butyl-, 2-t-butyl-, 2-sec-amyl-, or 1,3-, 2,3-, 1,4-, or 2,7-dimethylanthraquinones and at least part of the anthraquinone may be the alkylated tetrahydroanthraquinone. As described, 2-t-butyl anthraquinone in solution in methylnaphthalene and diisobutyl carbinol mixture is hydrogenated in the presence of the catalyst prepared as in the parent Specification, dried to a water content not exceeding that corresponding to a relative humidity of 60 per cent. The relative humidity of the incoming gas is adjusted by contact with pure water. Nitrogen is passed through first to establish water equilibrium and hydrogen is then substituted therefor. The hydrogenation may be effected at 0.4-3 atms. and 20-50 DEG C. Specification 686,572 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB146956A GB793004A (en) | 1956-01-16 | 1956-01-16 | Improvements in or relating to the hydrogenation of alkylanthraquinones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB146956A GB793004A (en) | 1956-01-16 | 1956-01-16 | Improvements in or relating to the hydrogenation of alkylanthraquinones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB793004A true GB793004A (en) | 1958-04-09 |
Family
ID=9722534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB146956A Expired GB793004A (en) | 1956-01-16 | 1956-01-16 | Improvements in or relating to the hydrogenation of alkylanthraquinones |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB793004A (en) |
-
1956
- 1956-01-16 GB GB146956A patent/GB793004A/en not_active Expired
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