Title:
コバルト置換酸化クロム組成物、それらの製造、および触媒および触媒前駆物質としてのそれらの使用
Document Type and Number:
Japanese Patent JP5133500
Kind Code:
B2
Abstract:
A crystalline alpha-chromium oxide where from about 0.05 atom % to about 6 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by trivalent cobalt (Co+3) atoms is disclosed. Also disclosed is a chromium-containing catalyst composition comprising as a chromium-containing component the crystalline cobalt-substituted alpha-chromium oxide; and a method for preparing a composition comprising the crystalline cobalt-substituted alpha-chromium oxide. The method involves (a) co-precipitating a solid by adding ammonium hydroxide to an aqueous solution of a soluble cobalt salt and a soluble trivalent chromium salt that contains at least three moles of nitrate per mole of chromium in the solution and has a cobalt concentration of from about 0.05 mole % to about 6 mole % of the total concentration of cobalt and chromium in the solution; and after at least three moles E of ammonium per mole of chromium in the solution has been added to the solution, (b) collecting the co-precipitated solid formed in (a); (c) drying the collected solid; and (d) calcining the dried solid. Also disclosed is a chromium-containing catalyst composition comprising a chromium-containing component prepared by treating the crystalline cobalt-substituted alpha-chromium oxide with a fluorinating agent; and a process for changing the fluorine distribution (i.e., content and/or arrangement) in a hydrocarbon or halogenated hydrocarbon in the presence of a catalyst. The process involves using as the catalyst a composition comprising the crystalline cobalt-substituted alpha-chromium oxide and/or the treated cobalt-substituted alpha-chromium oxide.
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Inventors:
Natsupa, Mario Jei
Lao, Bella Not Malikaji Yuna
Rosen Feld, David H.
Sabra Money, Siekha
Subramanian, Manil Parum A
Allen Sea, Seabert
Lao, Bella Not Malikaji Yuna
Rosen Feld, David H.
Sabra Money, Siekha
Subramanian, Manil Parum A
Allen Sea, Seabert
Application Number:
JP2004529843A
Publication Date:
January 30, 2013
Filing Date:
August 21, 2003
Export Citation:
Assignee:
E.I.DU PONT DE NEMOURS AND COMPANY
International Classes:
C01G37/02; B01J23/26; B01J23/86; B01J27/06; B01J27/132; B01J37/03; C07B39/00; C07B61/00; C07C17/00; C07C17/08; C07C17/10; C07C17/20; C07C17/21; C07C17/23; C07C17/25; C07C17/358; C07C17/37; C07C19/08; C07C21/18; B01J35/00; B01J35/10; B01J37/02
Domestic Patent References:
| JP4943922B1 | ||||
| JP838904A | ||||
| JP2001500059A | ||||
| JP7206728A | ||||
| JP11226409A |
Attorney, Agent or Firm:
Junji Yuda
Noriyuki Takebayashi
Noriyuki Takebayashi