公开(公告)号：DE58901153D1

公开(公告)日：1992-05-21

申请号：DE58901153

申请日：1989-08-15

Applicant: BASF AG

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

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

Abstract: The invention relates to catalyst particles of an active mass 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]f Ox in which a is 0.1 to 5, b is 0.1 to 10, c is 1 to 15, d is 0.01 to 2, e is 0 to 2, f is 0 to 30 and x is the number of oxygen atoms required for saturating the valencies of the other components. The catalyst particles are characterised in that they have the form of a 3- to 5-spoke wheel or of a rosette, having wall thicknesses of 0.5 to 4 mm and a diameter of 3 to 20 mm.

公开(公告)号：DE3827639A1

公开(公告)日：1990-02-22

申请号：DE3827639

申请日：1988-08-16

Applicant: BASF AG

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

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

Abstract: The invention relates to catalyst particles of an active mass 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]f Ox in which a is 0.1 to 5, b is 0.1 to 10, c is 1 to 15, d is 0.01 to 2, e is 0 to 2, f is 0 to 30 and x is the number of oxygen atoms required for saturating the valencies of the other components. The catalyst particles are characterised in that they have the form of a 3- to 5-spoke wheel or of a rosette, having wall thicknesses of 0.5 to 4 mm and a diameter of 3 to 20 mm.

公开(公告)号：DE3160176D1

公开(公告)日：1983-05-19

申请号：DE3160176

申请日：1981-05-08

Applicant: BASF AG

Inventor： MAGIN RUDOLF DR ,  NENNINGER FRANZ ,  ENGERT GERD-JUERGEN DR

IPC: B01J4/02 ,  B01J4/00 ,  B01J8/00 ,  B01J8/02 ,  B01J8/06

Abstract: A process and device for charging a plurality of tubes in a tube reactor with granular solids, preferably with catalysts, which, for this purpose, are fed from one or more stock vessels to a controllable metering device and from there, via guiding and directing devices and flexible hose connections, successively into the tubes to be filled, wherein, during the packing of the tubes, a stream of gas of constant amount is generated, which can, after an individual tube has been packed, be passed temporarily, via one or more controllable valves, through this packed tube, a pressure drop measurement being carried out at the same time and the differential between the measured value and the predetermined intended value being used to determine a small additional amount of packing material which is subsequently introduced into the tube which has been subjected to measurement, and wherein thereafter a program control triggers the mechanical packing of the next tube, metered in the same manner, with subsequent pressure drop measurement and metering of the additional amount.

公开(公告)号：DE3800991A1

公开(公告)日：1989-07-27

申请号：DE3800991

申请日：1988-01-15

Applicant: BASF AG

Inventor： WILLERSINN CARL-HEINZ DR ,  MARTAN HANS DR ,  KRABETZ RICHARD DR ,  ENGERT GERD-JUERGEN DR

IPC: C07C57/05 ,  C07C51/00 ,  C07C51/25 ,  C07C57/055 ,  C07C67/00

Abstract: A process for the manufacture of alpha , beta -monoolefinic unsaturated carboxylic acids containing 3 to 4 C atoms by gas phase oxidation of alkylenes containing 3 to 4 C atoms and the corresponding alpha , beta -monoolefinic unsaturated aldehydes using oxidic catalysts containing molybdenum and customary therefor in two oxidation steps at pressures from 0.5 to 10 bar, removal of the unsaturated carboxylic acids after the second oxidation step by absorption and return of unreacted starting substances, in which the pressure after the second oxidation step is adjusted to 0.3 to 1.0 bar.