ES225056A1 - Improvements in or relating to the regeneration of catalysts - Google Patents

Improvements in or relating to the regeneration of catalysts

Info

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
Application number
ES0225056A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik LCL Ltd
Original Assignee
Laporte Chemicals Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Laporte Chemicals Ltd filed Critical Laporte Chemicals Ltd
Publication of ES225056A1 publication Critical patent/ES225056A1/en
Expired legal-status Critical Current

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.
ES0225056A 1954-12-09 1955-11-17 Improvements in or relating to the regeneration of catalysts Expired ES225056A1 (en)

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
GB787340A (en) 1957-12-04

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