公开(公告)号：DE19705326A1

公开(公告)日：1998-08-13

申请号：DE19705326

申请日：1997-02-12

Applicant: BASF AG

Inventor： NOE RALF DR ,  HAGEMEYER ALFRED DR ,  HOELZLE MARKUS DR ,  HIBST HARTMUT PROF DR ,  KUEHBAUCH HARTWIG DR ,  FISCHER MARTIN DR ,  NEUMANN HANS-PETER DR

IPC: B01J23/68 ,  C07B41/00 ,  C07C45/34 ,  C07C51/25 ,  B01J23/89 ,  B01J27/224 ,  C07C47/06 ,  C07C47/22 ,  C07C47/28 ,  C07C57/05 ,  C07D307/36 ,  C07D307/60

Abstract: A process for the selective oxidation of non-cyclic unsaturated hydrocarbons (UHC) other than isobutene, especially non-cyclic poly-unsaturated alkenes, to give oxygen-containing organic compounds. The process comprises reacting the UHC, or a gas mixture containing UHC, at 150-600 (preferably 180-450) deg C with an optionally supported catalyst material based on a silver- vanadium mixed oxide of formula AgxMyVOz (I), in which x = 0.001-3; M = another element, preferably from main groups 1-6 or sub-Groups 1-3 and 5-8; y = 0-0.5; z = the number required for charge neutrality between cations and oxygen anions. Preferably x = 0.001-1, with y and z as above. Preferred (I) is a beta - or delta -silver-vanadium bronze. The catalyst may be used as an unsupported bulk material, or supported on clay, pillared clay, zeolites, aluminium phosphate, silicon carbide, silicon nitride, boron nitride, carbon, or oxides of titanium, zirconium, zinc, thorium, magnesium, calcium, barium or silicon. The process comprises (a) at least partial reduction of (I) by contact with the UHC or an oxygen-free gas mixture containing UHC, and (b) re-oxidation of the reduced catalyst with gas containing molecular oxygen or another oxygen- containing oxidising agent. Stage (a) is preferably carried out with a gas containing the UHC and a sub-stoichiometric amount of O2 (especially using air) or other oxidising agent as above, preferably dinitrogen oxide.

公开(公告)号：DE19705328A1

公开(公告)日：1998-08-13

申请号：DE19705328

申请日：1997-02-12

Applicant: BASF AG

Inventor： HOELZLE MARKUS DR ,  HAGEMEYER ALFRED DR ,  LAUTH GUENTER PROF DR

IPC: B01J23/22 ,  B01J27/232 ,  C07D307/36 ,  B01J27/236 ,  C07B33/00

Abstract: Vanadium-containing catalyst material with a hydrotalcite structure of formula VaMe(II)bMe(III)c(OH)y(CO3)z.nH2O (I), in which Me(II) = divalent metal(s), preferably magnesium, calcium and/or zinc; Me(III) = mono-, tri- or tetra-valent metal(s), preferably aluminium, chromium, titanium, iron, lithium and/or caesium; b/a = 0.2-2.0; c/a = 0-2.0; a = greater than 0; n = any integer; y, z = greater than 0; y + z = the number required for charge neutrality between the cations V, Me(II) and Me(III) and the anions OH and CO3. (I) is obtained by mixing a solution (1) containing compound(s) of V and of Me(II) with a solution (2) containing at least OH ions and working up the resulting precipitate by washing ageing, drying and possibly calcining, plus hydrothermal treatment if required; regeneration of (I) comprises treatment in a stream of oxygen or air at between room temperature and 500 (preferably 100-500) deg C. Also claimed is a process for the selective oxidation of hydrocarbons, especially polyunsaturated alkenes, by reaction with (I) at 300-500 deg C.