公开(公告)号：CA1190534A

公开(公告)日：1985-07-16

申请号：CA423621

申请日：1983-03-15

Applicant: BASF AG

Inventor： BROECKER FRANZ J ,  DUEMBGEN GERD ,  FOUQUET GERD ,  KRABETZ RICHARD ,  MERGER FRANZ ,  NEES FRIEDBERT

IPC: C07C69/00 ,  B01J21/06 ,  B01J23/06 ,  B01J23/10 ,  B01J23/62 ,  B01J23/63 ,  C07B61/00 ,  C07C67/00 ,  C07C67/39 ,  C07C67/54 ,  C07C69/54 ,  B01J23/44

Abstract: A catalyst which is free from alkali metal compounds and alkaline earth metal compounds, contains palladium and lead as active constituents and is supported on a carrier which contains two or more of the oxides ZnO, Al2O3, La2O3 and TiO2, and the use of this catalyst for the preparation of methyl mehtacrylate from methacrolein, methanol and oxygen.

公开(公告)号：CA1212933A

公开(公告)日：1986-10-21

申请号：CA448003

申请日：1984-02-22

Applicant: BASF AG

Inventor： BAER KARL ,  BASSLER PETER ,  DUEMBGEN GERD ,  FOUQUET GERD ,  KRABETZ RICHARD ,  MERGER FRANZ ,  NEES FRIEDBERT

IPC: C07C69/54 ,  B01J23/00 ,  B01J23/06 ,  B01J23/62 ,  C07B61/00 ,  C07C67/39

Abstract: Catalysts for the preparation of carboxylates from an aldehyde and an alkanol in the presence of oxygen, which contain palladium and lead as active components, these being present on a carrier containing zinc oxide, and the palladium being applied as a palladium salt in a solution containing hydrochloric acid and then being liberated by reduction, and whose carrier consists solely of zinc oxide, are particularly active and selective.

公开(公告)号：CA1222998A

公开(公告)日：1987-06-16

申请号：CA449080

申请日：1984-03-07

Applicant: BASF AG

Inventor： DUEMBGEN GERD ,  FOUQUET GERD ,  KRABETZ RICHARD ,  MERGER FRANZ ,  NEES FRIEDBERT

IPC: B01J27/18 ,  B01J27/19 ,  B01J27/198 ,  B01J27/199 ,  C07B61/00 ,  C07C51/00 ,  C07C51/25 ,  C07C57/04 ,  C07C57/055 ,  C07C67/00

Abstract: Oxidation catalysts of the general formula W6MoaVbPcCudAseSbfXgYhOx where X is K, Rb and/or Cs, Y is Nb, Fe, Mn, Sn, Li, Na, Sr, Rh, Ce, Ti and/or Cr, a is from 2.0 to 6, b is from 0 to 3, c is from 0.1 to 3, d is from 0.01 to 1, e is from 0 to 1, f is from 0 to 2, g is from 0.01 to 3, h is from 0 to 1 and x is the number of oxygen atoms formally required to saturate the valencies of the catalyst components, give high conversions and particularly high selectivity in the oxidation of methacrolein in the gas phase to methacrylic acid.

公开(公告)号：CA1206464A

公开(公告)日：1986-06-24

申请号：CA423155

申请日：1983-03-09

Applicant: BASF AG

Inventor： KRABETZ RICHARD ,  DUEMBGEN GERD ,  NEES FRIEDBERT ,  MERGER FRANZ ,  FOUQUET GERD

IPC: B01J27/18 ,  B01J27/188 ,  B01J27/19 ,  B01J27/195 ,  C07B61/00 ,  C07C51/00 ,  C07C51/235 ,  C07C57/055 ,  C07C67/00 ,  C07C57/05

Abstract: Oxidation catalysts of the general formula Mo12PaWbSbcAsdCueXfOx where X is Nb, Fe, Mn, Sn and/or Cr, a is 0.1-3, b is 0.1-4, c is >0-2, d is 0-1, e is 0-1, d + e is >0-2, f is 0-1.5, e + f is 0-2 and x is the number of oxygen atoms formally required to saturate the valencies of the other catalyst components, may be used particularly advantageously for the preparation of methacrylic acid by gas phase oxidation of methacrolein.

公开(公告)号：CA1194037A

公开(公告)日：1985-09-24

申请号：CA425444

申请日：1983-04-07

Applicant: BASF AG

Inventor： DUEMBGEN GERD ,  FOUQUET GERD ,  KRABETZ RICHARD ,  LUCAS EKHART ,  MERGER FRANZ ,  NEES FRIEDBERT

IPC: B01J31/00 ,  B01J31/04 ,  C07B61/00 ,  C07C45/00 ,  C07C45/75 ,  C07C47/21 ,  C07C47/22 ,  C07C67/00

Abstract: .alpha.-Alkylacroleins are prepared by a process wherein an alkanal is reacted with formaldehyde in the presence of a secondary amine and, if desired, of an acid, in the liquid phase, under superatmospheric pressure and at above 150.degree.C, for not more than 25 minutes. The .alpha.-alkylacroleins obtainable by the process are useful starting materials for dyes, drugs and pesticides.