Title:
【発明の名称】炭化水素の混合物を二塩基酸にする酸化においてコバルト触媒を処理するためのプロセス
Document Type and Number:
Japanese Patent JP2002502837
Kind Code:
A
Abstract:
This invention relates to methods and reactor devices for controlling the oxidation of hydrocarbons to dibasic acids, in the presence of a cobalt catalyst and a monobasic acid, such as acetic acid, by treating the catalyst from the reaction mixture, outside the oxidation zone, after the oxidation has taken place at least partially. In one preferred embodiment, the catalyst is reduced to contain, preferably predominantly and more preferably substantially, cobalt ions in valence II, and at least partially precipitated by de-watering and/or thermal treatment. In a different preferred embodiment, the catalyst in the reaction mixture is first oxidized or maintained, preferably predominantly and more preferably substantially, at valence III, the reaction mixture is de-watered, the catalyst is reduced, preferably predominantly and more preferably substantially, to valence II, causing precipitation either spontaneously at a predetermined temperature or after further thermal treatment. The precipitated catalyst is preferably recycled directly or indirectly.
Inventors:
Basilieu, Justasios
Dassell, Mark W.
Rostami, Adele M.
Dod Jeon, Douglas Jay.
Deco Star, David Sea.
Dassell, Mark W.
Rostami, Adele M.
Dod Jeon, Douglas Jay.
Deco Star, David Sea.
Application Number:
JP2000530490A
Publication Date:
January 29, 2002
Filing Date:
January 14, 1999
Export Citation:
Assignee:
RPC Inc.
International Classes:
B01J37/16; C07B61/00; C07C51/31; C07C55/02; C07C55/14; C08G63/78; C08G69/28; C08G73/10; B01J37/14; (IPC1-7): C07C51/31; B01J37/14; B01J37/16; C07C55/02; C07C55/14; C08G63/78; C08G69/28; C08G73/10
Attorney, Agent or Firm:
Shusaku Yamamoto