公开(公告)号：MY129066A

公开(公告)日：2007-03-30

申请号：MYPI20022821

申请日：2002-07-26

Applicant: BASF AG

Inventor： HIBST HARTMUT PROF DR ,  NOE RALF DR ,  EXNER KAI MICHAEL DR ,  DUDA MARK DR

IPC: C07D307/60 ,  C07B61/00

Abstract: A PROCESS FOR PREPARING MALEIC ANHYDRIDE BY HETEROGENEOUSLY CATALYZED GAS-PHASE OXIDATION OF AN N-BUTENE-CONTAINING HYDROCARBON STREAM BY MEANS OF OXYGEN-CONTANING GASES IN A SHELL-AND-TUBE REACTOR HAVING TWO SUCCESSIVE REACTION ZONES, WHERE THE FIRST, FEED-SIDE REACTION ZONE CONTAINS AT LEAST ONE CATALYST WHICH IS SUITABLE FOR THE OXYDEHYDROGENATION OF N-BUTENES TO 1, 3-BUTADIENE AND THE SECOND, PRODUCT-SIDE REACTION ZONE CONTAINS AT LEAST ONE CATALYST WHICH IS SUITABLE FOR THE OXIDATION OF1, 3-BUTADIENE TO MALEIC ANHYDRIDE, IS CARRIED OUT USING A SHELL-AND-TUBE REACTOR WHICH HAS AT LEAST ONE HEAT TRANSFER MEDIUM CIRCUIT IN THE REGION OF THE FIRST, FEED-SIDE REACTION ZONE AND AT LEAST ONE FURTHER HEAT TRANSFER MEDIUM CIRCUIT IN THE REGION OF THE SECOND, PRODUCT-SIDE REACTION ZONE.

公开(公告)号：MY138064A

公开(公告)日：2009-04-30

申请号：MYPI20030151

申请日：2003-01-17

Applicant: BASF AG

Inventor： MAASE MATTHIAS DR ,  BECKER MICHAEL DR ,  MASSONNE KLEMENS DR ,  HALBRITTER KLAUS DR ,  NOE RALF DR ,  BARTSCH MICHAEL DR ,  SIEGEL WOLFGANG DR ,  STEGMANN VEIT DR ,  FLORES MIGUEL DR ,  HUTTENLOCH OLIVER DR

IPC: C07D233/58 ,  B01J31/24 ,  C07B61/00 ,  C07B63/00 ,  C07B63/02 ,  C07C1/30 ,  C07C7/10 ,  C07C13/23 ,  C07C45/50 ,  C07C67/14 ,  C07C67/58 ,  C07C69/14 ,  C07C69/78 ,  C07C403/12 ,  C07D233/60 ,  C07D403/12 ,  C07F7/18 ,  C07F9/02 ,  C07F9/12 ,  C07F9/142 ,  C07F9/145 ,  C07F9/22 ,  C07F9/46 ,  C07F9/48 ,  C07F9/50 ,  C07F9/52 ,  C07F9/572 ,  C07F9/6503 ,  C07F9/6574 ,  C07F9/6584

Abstract: A PROCESS FOR REMOVING ACIDS FROM REACTION MIXTURES USING AN AUXILIARY BASE, IN WHICH THE AUXILIARY BASEB) COMBINES WITH THE ACID TO FORM A SALT WHICH IS LIQUID AT TEMPERATURES AT WHICH THE PRODUCT OF VALUE DOES NOT SIGNIFICANTLY DECOMPOSE DURING THE REMOVAL OF THE LIQUID SALT, AND @C)THE SALT OF THE AUXILIARY BASE WITH THE PRODUCT OF VALUE OR THE SOLUTION OF THE PRODUCT OF VALUE IN A SUITABLE SOLVENT FORMS TWO IMMISCIBLE LIQUID PHASES.

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.