公开(公告)号：ID15827A

公开(公告)日：1997-08-14

申请号：ID970073

申请日：1997-01-13

Applicant: BASF AG

Inventor： MACHHAMMER OTTO ,  DOCKNER TONI ,  ENGERT GERD-JUERGEN ,  PROLL THEO

IPC: B01D9/02 ,  B01D3/00 ,  C07B61/00 ,  C07C51/235 ,  C07C51/25 ,  C07C51/43 ,  C07C51/48 ,  C07C57/04 ,  C07C57/05 ,  C07C57/055 ,  C07C57/07 ,  C07C69/54

Abstract: The production of acrylic acid (I) and/or its esters comprises; (a) catalytic gas-phase oxidation of propene and/or acrolein to give a gaseous product containing (I), (b) absorption of the reaction product with a solvent, (c) distillation in a column to give crude (I) and solvent, (d) purification of (I) by crystallisation and optionally (e) esterification of crystallised (I). Also claimed is an apparatus for the process, comprising reactor(s) for stage (a), an absorption column, a distillation column, dynamic crystalliser(s) and static crystalliser(s), and container(s) for intermediate storage.

公开(公告)号：CA1336974C

公开(公告)日：1995-09-12

申请号：CA607882

申请日：1989-08-09

Applicant: BASF AG

Inventor： MARTAN HANS ,  MROSS WOLF DIETER ,  ENGERT GERD-JUERGEN

IPC: B01J23/31 ,  B01J23/88 ,  B01J23/888 ,  B01J27/186 ,  B01J27/192 ,  B01J27/199 ,  B01J35/02 ,  B01J35/04 ,  C07C45/34 ,  C07C45/35 ,  C07C253/26 ,  B01J23/76

Abstract: Catalyst particles of an active material of the general formula ¢Mo,V,W!12Bia¢Fe,Ce!b¢Ni,Co,Zn!c¢Alkali!d¢P,As,Sb,B!e¢Si,Al,Ti)fOx where a is from 0.1 to 5, b is from 0.1 to 10, c is from 1 to 15, d is from 0.01 to 2, e is from 0 to 2, f is from 0 to 30 and x is the number of oxygen atoms required to saturate the valences of the other components, have the shape of a 3-spoked to 5-spoked wheel or of a rosette which have wall thicknesses of from 0.5 to 4 mm and a diameter of from 3 to 20 mm.