Title:
ニッケル置換ならびに混合ニッケルおよびコバルト置換酸化クロム組成物、それらの製造、ならびに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 JP5096661
Kind Code:
B2
Abstract:
A crystalline alpha-chromium oxide where from about 0.05 atom % to about 2 atom % of the chromium atoms in the alpha-chromium oxide lattice are substituted by nickel atoms, and optionally, additional chromium atoms in the alpha-chromium oxide lattice are substituted by trivalent cobalt atoms (provided that the total amount of the nickel atoms and the trivalent cobalt atoms in the alpha-chromium oxide lattice is no more than 6 atom %) is disclosed. Also disclosed is a chromium-containing catalyst composition comprising as a chromium-containing component the crystalline substituted alpha-chromium oxide; and a method for preparing a composition comprising the crystalline substituted alpha-chromium oxide. The method comprises (a) co-precipitating a solid by adding ammonium hydroxide to an aqueous solution of a soluble divalent nickel salt, a soluble trivalent chromium salt, and optionally, a soluble divalent or trivalent cobalt salt, that contains at least three moles of nitrate per mole of chromium in the solution, has a nickel concentration of from about 0.05 mole % to about 2 mole % of the total of nickel, chromium, and cobalt in the solution, and has a combined concentration of nickel and cobalt of no more than 6 mole % of the total of nickel, chromium, and cobalt in the solution; and after at least three moles of ammonium per mole of chromium 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 said crystalline 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 substituted alpha-chromium oxide and/or the treated substituted alpha-chromium oxide.
Inventors:
Natsupa, Mario Jei
Lao, Bella Not Malikaji Yuna
Rosen Feld, H. David
Sabra Money, Siekha
Subramanian, Manil Parum A
Allen Sea, Seabert
Lao, Bella Not Malikaji Yuna
Rosen Feld, H. David
Sabra Money, Siekha
Subramanian, Manil Parum A
Allen Sea, Seabert
Application Number:
JP2004529844A
Publication Date:
December 12, 2012
Filing Date:
August 21, 2003
Export Citation:
Assignee:
E.I.DU PONT DE NEMOURS AND COMPANY
International Classes:
C01G37/02; B01J23/00; B01J23/26; B01J23/86; B01J35/00; B01J37/03; B01J37/26; C07B61/00; C07C17/08; C07C17/10; C07C17/158; C07C17/20; C07C17/21; C07C17/23; C07C17/25; C07C17/358; C07C17/37; C07C19/07; B01J35/02; B01J37/02
Domestic Patent References:
| JP4943922B1 | ||||
| JP838904A | ||||
| JP2001500059A | ||||
| JP7206728A | ||||
| JP11226409A |
Attorney, Agent or Firm:
Junji Yuda
Noriyuki Takebayashi
Noriyuki Takebayashi