ES225056A1 - Improvements in or relating to the regeneration of catalysts - Google Patents
Improvements in or relating to the regeneration of catalystsInfo
- Publication number
- ES225056A1 ES225056A1 ES0225056A ES225056A ES225056A1 ES 225056 A1 ES225056 A1 ES 225056A1 ES 0225056 A ES0225056 A ES 0225056A ES 225056 A ES225056 A ES 225056A ES 225056 A1 ES225056 A1 ES 225056A1
- Authority
- ES
- Spain
- Prior art keywords
- hydrogenation
- reactivation
- benzene
- drying
- hydrogen peroxide
- 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
-
- 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
- B01J23/90—Regeneration or reactivation
- B01J23/96—Regeneration or reactivation of catalysts comprising metals, oxides or hydroxides of the noble metals
-
- 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
-
- 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)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Abstract
In the manufacture of hydrogen peroxide by the alternate hydrogenation and autoxidation of an organic compound dissolved in a solvent or solvent mixture with removal of the hydrogen peroxide formed and recycling of the autoxidized compound, the supported palladium hydrogenation catalyst, after it has become deactivated, is reactivated by treatment with a non-oxidizing aqueous alkaline solution, preferably at a pH greater than 12. The reactivating solution preferably contains a caustic alkali such as sodium hydroxide, but solutions of alkali metal carbonates or phosphates may also be used. In an example a palladium catalyst prepared according to Specification 718,306 is used in the hydrogenation stage of a process employing 2-ethyl anthraquinone dissolved in a mixture of benzene and methyl cyclohexanol acetate. Reactivation is carried out by washing with benzene, drying, stirring twice with sodium hydroxide solution at 80 DEG C., and finally washing and drying. Reactivation with an aqueous solution containing sodium bicarbonate and sodium hypochlorite, described for comparative purposes, shows inferior results. Specifications 465,070, 686,574, 741,444, 744,634, 760,737 and French Specification 1,068,893 also are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB35710/54A GB787340A (en) | 1954-12-09 | 1954-12-09 | Improvements in or relating to the regeneration of catalysts |
Publications (1)
Publication Number | Publication Date |
---|---|
ES225056A1 true ES225056A1 (en) | 1956-01-16 |
Family
ID=10380714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES0225056A Expired ES225056A1 (en) | 1954-12-09 | 1955-11-17 | Improvements in or relating to the regeneration of catalysts |
Country Status (2)
Country | Link |
---|---|
ES (1) | ES225056A1 (en) |
GB (1) | GB787340A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5098215B2 (en) | 2006-05-01 | 2012-12-12 | 三菱瓦斯化学株式会社 | Method for activating hydrogenation catalyst and method for producing hydrogen peroxide containing the same |
CN107619024A (en) * | 2017-10-20 | 2018-01-23 | 山东明化新材料有限公司 | Hydrogen peroxide manufacture anthraquinone degradation products Dual alkali regenerating unit |
CN111437889A (en) * | 2020-04-01 | 2020-07-24 | 安徽泉盛化工有限公司 | Regeneration method of catalyst of hydrogenation system for producing hydrogen peroxide by anthraquinone process |
CN113289694B (en) * | 2021-06-28 | 2023-04-28 | 广西田东达盛化工科技有限公司 | Method for regenerating palladium catalyst in anthraquinone process hydrogen peroxide production |
FR3131227A1 (en) | 2021-12-23 | 2023-06-30 | Arkema France | HYDROGENATION CATALYST REACTIVATION |
-
1954
- 1954-12-09 GB GB35710/54A patent/GB787340A/en not_active Expired
-
1955
- 1955-11-17 ES ES0225056A patent/ES225056A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB787340A (en) | 1957-12-04 |
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