Title:
【発明の名称】オキソ合成の反応生成物からロジウムを回収する方法
Document Type and Number:
Japanese Patent JP2003521434
Kind Code:
A
Abstract:
Recovery of rhodium from rhodium complexes comprises: (i) extraction of the organic phase with an aqueous solution of a phosphate or phosphonate; and (ii) treating the organic phase with an oxidizing agent and with an aqueous solution of an arylphosphine at increased temperature and pressure to recover the rhodium-containing aqueous solution from the organic phase. A process for the recovery of rhodium from rhodium complexes, optionally cobalt complexes and optionally complex ligand-containing organic solutions comprises: (i) extraction of the organic phase with an aqueous solution of a phosphate of formula (1) or phosphonate of formula (2); (ii) washing the organic phase with water at pH 0-8; (iii) treating the organic phase with an oxidizing agent at 0-100 [deg]C; (iv) treating the organic phase with an aqueous solution of a water-soluble arylphosphine at increased temperature and pressure; and (v) phase separation of the rhodium containing aqueous solution (I) from the organic phase. (O)P(OR1>)(OR2>)(OR3>) (1) R4>P(O)(OR5>)(OR6>) (2) R1>-R6>H, 1-10C alkyl or 6-10 C aryl, optionally substituted with 1-4C alkyl. Independent claims are also included for: (i) A catalyst for hydroformylation of aldehydes, comprising the recovered aqueous rhodium-containing solution (I) (ii) A process for the treatment of the recovered rhodium-containing aqueous solution (I) at 50-200 [deg]C and 0.1-2.0 MPa with an oxidizing agent followed by extraction using an organic (di)phosphine-containing organic solvent. (iii) The recovered rhodium-containing organic solution (II).
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Inventors:
Bonen Hans-Villi
Fisher Richard
Hewlett Mark
Tugorzelsky Wolfgang
Schepper Norbert
Fisher Richard
Hewlett Mark
Tugorzelsky Wolfgang
Schepper Norbert
Application Number:
JP2001556787A
Publication Date:
July 15, 2003
Filing Date:
January 24, 2001
Export Citation:
Assignee:
Celanese Chemicals Europe Geselsyaft Mito Vesyurenktel Haftung
International Classes:
C01G55/00; B01J20/34; B01J31/24; B01J31/40; B01J38/00; B01J38/48; C07B63/00; C07C45/50; C07F15/00; C22B3/00; C22B3/38; C22B11/00; (IPC1-7): C01G55/00; B01J31/24; B01J31/40; B01J38/00
Domestic Patent References:
| JPS5520782A | 1980-02-14 | |||
| JPH0248419A | 1990-02-19 | |||
| JPH05261296A | 1993-10-12 | |||
| JPH05261297A | 1993-10-12 | |||
| JP2000302452A | 2000-10-31 | |||
| JP2000325802A | 2000-11-28 | |||
| JPS5520782A | 1980-02-14 | |||
| JPH0248419A | 1990-02-19 | |||
| JPH05261296A | 1993-10-12 | |||
| JPH05261297A | 1993-10-12 | |||
| JP2000302452A | 2000-10-31 | |||
| JP2000325802A | 2000-11-28 |
Attorney, Agent or Firm:
Mitsufumi Ezaki (3 others)