GB595514A - Process for the preparation of hydroquinone - Google Patents

Process for the preparation of hydroquinone

Info

Publication number
GB595514A
GB595514A GB171?5/45A GB1719545A GB595514A GB 595514 A GB595514 A GB 595514A GB 1719545 A GB1719545 A GB 1719545A GB 595514 A GB595514 A GB 595514A
Authority
GB
United Kingdom
Prior art keywords
quinone
steam
hydrogen
nickel
hydroquinone
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
GB171?5/45A
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.)
Rhone Poulenc SA
Original Assignee
Rhone Poulenc SA
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 Rhone Poulenc SA filed Critical Rhone Poulenc SA
Publication of GB595514A publication Critical patent/GB595514A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/06—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by conversion of non-aromatic six-membered rings or of such rings formed in situ into aromatic six-membered rings, e.g. by dehydrogenation
    • C07C37/07—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by conversion of non-aromatic six-membered rings or of such rings formed in situ into aromatic six-membered rings, e.g. by dehydrogenation with simultaneous reduction of C=O group in that ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Hydroquinone is obtained by passing a mixture of hydrogen, steam and quinone vapour, optionally in presence of an organic solvent, stable under the reaction conditions, e.g. benzene, chlorbenzene or alcohol, over a hydrogenation catalyst, such as nickel, cobalt or copper, either separately or in admixture, advantageously employed as granules or blocks having good mechanical resistance, this state being effected by mixing with cements or clays; an alloy of nickel and aluminium superficially attacked by alkali is likewise effective. Fouling of the catalyst and formation of by-products is avoided. In examples: (1) hydrogen, steam and quinone are passed at 240 DEG C. over granular nickel-cement; (2) hydrogen, steam, quinone and chlorbenzene vapour are reacted as in (1), the vapours being fractionally condensed to obtain concentrated aqueous hydroquinone and effect recovery of chlorobenzene.
GB171?5/45A 1941-12-08 1945-07-05 Process for the preparation of hydroquinone Expired GB595514A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR595514X 1941-12-08

Publications (1)

Publication Number Publication Date
GB595514A true GB595514A (en) 1947-12-08

Family

ID=8966905

Family Applications (1)

Application Number Title Priority Date Filing Date
GB171?5/45A Expired GB595514A (en) 1941-12-08 1945-07-05 Process for the preparation of hydroquinone

Country Status (1)

Country Link
GB (1) GB595514A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954891A (en) * 1971-12-07 1976-05-04 Rutgerswerke Aktiengesellschaft Method of making substituted hydroquinones
US5761324A (en) * 1995-06-19 1998-06-02 Taiyo Yuden Co., Ltd. Piezoelectric acoustic device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954891A (en) * 1971-12-07 1976-05-04 Rutgerswerke Aktiengesellschaft Method of making substituted hydroquinones
US5761324A (en) * 1995-06-19 1998-06-02 Taiyo Yuden Co., Ltd. Piezoelectric acoustic device

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