公开(公告)号：DE3727384A1

公开(公告)日：1989-03-02

申请号：DE3727384

申请日：1987-08-17

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  HAMMES PETER DR ,  MESSLINGER REINHARD DR ,  MUNZINGER MANFRED ,  FROEHLICH HELMUT DR

IPC: G01N27/30

Abstract: Redox electrode for the determination of nitrous acid and nitrosyl compounds in aqueous acidic solution comprising a metallic conductor which has an n-type metal oxide surface.

公开(公告)号：DE3703837A1

公开(公告)日：1988-08-18

申请号：DE3703837

申请日：1987-02-07

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  ENGELHARDT HUBERT ,  GEIGER WOLFGANG ,  MAYER UDO DR ,  HAMMES PETER DR ,  SIMMLER WERNER DR

IPC: B01J27/188 ,  B01J31/16 ,  B01J31/18 ,  B01J31/26 ,  C02F1/72 ,  C02F1/00 ,  B01J21/18

Abstract: Oxidizable for organic and/or inorganic compounds in waters are subjected to catalytic degradation using a catalyst applied to an oxygen-storing inert carrier, for example of graphite, coke, a non-gassing coal or active carbon. The carrier used is coated with a cationic dye complexed with heteropolyacids and/or polyacids and/or salts or metal acids of subgroups V to VIII. The advantages of the process include the prevention of biological growth on the catalyst surface by the biocidal dye cation and the avoidance of calcium and magnesium deposits on the catalyst surface through the presence of the cationic solid.

公开(公告)号：DE3628354A1

公开(公告)日：1988-02-25

申请号：DE3628354

申请日：1986-08-21

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  MAYER UDO DR ,  HAMMES PETER DR ,  LANDMANN BERND DR

IPC: C25B3/23 ,  C25B3/02 ,  C09B11/18

Abstract: A process for the preparation of a water soluble food-grade diaminotriphenylmethane colorant containing from 2 to 4 sulfo groups, comprising anodically oxidizing the corresponding leuco compound in an electrolysis cell divided into an anode space and a cathode space in the presence of from 0.01 to 2% by weight, based on the solution being oxidized, of a C2-C4-alkanol, urea, a urea derivative or a mixture thereof, at a potential epsilon h

公开(公告)号：DE3867491D1

公开(公告)日：1992-02-20

申请号：DE3867491

申请日：1988-02-02

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  ENGELHARDT HUBERT ,  GEIGER WOLFGANG ,  MAYER UDO DR ,  HAMMES PETER DR ,  SIMMLER WERNER DR

IPC: B01J27/188 ,  B01J31/16 ,  B01J31/18 ,  B01J31/26 ,  C02F1/72

Abstract: In the catalytic breakdown of oxidisable organic and/or inorganic cpds. in water, with a supported catalyst, and oxidising agents, there is used an inert carrier, which has been coated with cationic dyes, coated with heteropolyacids and/or polyacids and/or metal salts or metal acids of Sub-gps. V-VIII.

公开(公告)号：DE4009410A1

公开(公告)日：1991-09-26

申请号：DE4009410

申请日：1990-03-23

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  BOCHNITSCHEK WERNER DR ,  FRITZMANN JOHANN DR ,  HAMMES PETER DR ,  PROLL THEO DR ,  WEISBRODT WALTER DR

IPC: C25B1/16 ,  B01D61/44 ,  B01D61/52 ,  C25B1/10 ,  C25B1/22 ,  C25B13/04

Abstract: A process is described for the electrochemical cleavage of alkali metal sulphates into relatively highly concentrated solutions of alkali metal hydroxide and sulphuric acid by means of the use of a 3-compartment electrodialysis cell at temperatures of >/= 70 to equipped with an anion exchanger membrane, the polymeric ion exchanger matrix of which is composed of a styrene/divinylbenzene copolymer, having very highly basic quaternary ammonium groups, and a hydronium ion blocker, on the side of which facing the central chamber is located an anion exchanger layer or anion exchanger membrane having tertiary or secondary amino groups.

公开(公告)号：DE3576436D1

公开(公告)日：1990-04-12

申请号：DE3576436

申请日：1985-08-08

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  POMMER ERNST-HEINRICH DR ,  HAMMES PETER DR ,  ENGELHARDT HUBERT ,  GEIGER WOLFGANG ,  SIMMLER WERNER DR ,  HUBER GUENTHER

IPC: C02F1/42 ,  C02F1/46 ,  C02F1/461 ,  C02F1/467 ,  H01M4/90 ,  H01M4/96 ,  H01M8/00 ,  H01M8/10

Abstract: In a fuel cell which has an activated carbon-containing anode and an activated carbon-containing cathode and is preferably used for the oxidative treatment of waste waters containing oxygen or oxygen-containing compounds, the cathode has been subjected to partial anodic oxidation in a mineral acid at a potential epsilon h of from +1.3 to +10V and then doped with molybdenum(VI) and/or tungsten(VI) and/or vanadium(V) compounds, and the anode has been subjected to partial anodic oxidation in an aqueous mineral acid, cathodically reduced in an aqueous mineral acid and then impregnated with cobalt hydroxide and/or nickel hydroxide and/or copper hydroxide and/or zinc hydroxide, the anode and the cathode being separated by a porous polyelectrolyte through which the waste water flows.

公开(公告)号：DE3761571D1

公开(公告)日：1990-03-08

申请号：DE3761571

申请日：1987-08-18

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  MAYER UDO DR ,  HAMMES PETER DR ,  LANDMANN BERND DR

IPC: C25B3/23 ,  C25B3/02

Abstract: A process for the preparation of a water soluble food-grade diaminotriphenylmethane colorant containing from 2 to 4 sulfo groups, comprising anodically oxidizing the corresponding leuco compound in an electrolysis cell divided into an anode space and a cathode space in the presence of from 0.01 to 2% by weight, based on the solution being oxidized, of a C2-C4-alkanol, urea, a urea derivative or a mixture thereof, at a potential epsilon h

公开(公告)号：DE3513246A1

公开(公告)日：1986-10-16

申请号：DE3513246

申请日：1985-04-13

Applicant: BASF AG

Inventor： BRUDER HORST DR ,  HABERMANN WOLFGANG ,  MAYER UDO DR ,  HAMMES PETER DR

IPC: C25B3/29 ,  C09B11/00 ,  C25B3/23 ,  C25B3/02 ,  C09B11/18

Abstract: 1. A process for the preparation of a water-soluble diaminotriphenylmethane dye containing from 2 to 4 sulfo groups by anodic oxidation of the leuco compound in an electrolysis cell which is divided into two compartments, wherein the leuco compound is subjected to anodic oxidation at an oxygen overvoltage of

公开(公告)号：DE3430485A1

公开(公告)日：1986-02-27

申请号：DE3430485

申请日：1984-08-18

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  POMMER ERNST-HEINRICH DR ,  HAMMES PETER DR ,  ENGELHARDT HUBERT ,  GEIGER WOLFGANG ,  SIMMLER WERNER DR ,  HUBER GUENTHER

IPC: C02F1/42 ,  C02F1/46 ,  C02F1/461 ,  C02F1/467 ,  H01M4/90 ,  H01M4/96 ,  H01M8/00 ,  H01M8/10 ,  H01M8/22 ,  H01M4/88 ,  C02F1/72

Abstract: In a fuel cell which has an activated carbon-containing anode and an activated carbon-containing cathode and is preferably used for the oxidative treatment of waste waters containing oxygen or oxygen-containing compounds, the cathode has been subjected to partial anodic oxidation in a mineral acid at a potential epsilon h of from +1.3 to +10V and then doped with molybdenum(VI) and/or tungsten(VI) and/or vanadium(V) compounds, and the anode has been subjected to partial anodic oxidation in an aqueous mineral acid, cathodically reduced in an aqueous mineral acid and then impregnated with cobalt hydroxide and/or nickel hydroxide and/or copper hydroxide and/or zinc hydroxide, the anode and the cathode being separated by a porous polyelectrolyte through which the waste water flows.

公开(公告)号：DE3347259A1

公开(公告)日：1985-07-11

申请号：DE3347259

申请日：1983-12-28

Applicant: BASF AG

Inventor： WEISS FRANZ-JOSEF DR ,  HABERMANN WOLFGANG ,  HAMMES PETER DR ,  FROMMER ELMAR DR ,  THOMAS ERWIN ,  THOMA PETER DR

IPC: C25B3/00 ,  C01B21/14 ,  C25B1/00

Abstract: Aqueous solutions of hydroxylamine are prepared from aqueous hydroxylammonium salt solutions by electrodialysis by a method in which the aqueous hydroxylammonium salt solution is fed into the middle zone of an electrolysis cell, which is divided into a cathode zone, an anode zone and a middle zone by means of semipermeable membranes, and is electrolyzed, and the catholyte used is an alkali metal hydroxide solution containing ammonia and/or amines.