公开(公告)号：US3868417A

公开(公告)日：1975-02-25

申请号：US39101273

申请日：1973-08-23

Applicant: BASF AG

Inventor： DUEMBGEN GERD ,  ENGELBACH HEINZ ,  FREY WALTER ,  KRABETZ RICHARD ,  LEBERT ULRICH ,  TRIESSEN FRITZ ,  WILLERSINN CARL-HEINZ

IPC: B01D53/14 ,  B01D53/72 ,  B01D53/77 ,  C07C51/00 ,  C07C51/25 ,  C07C51/48 ,  C07C57/07 ,  C07C67/00 ,  C07C57/04

CPC classification number: C07C51/252 ,  B01D53/1487 ,  B01D53/1493 ,  C07C51/48 ,  Y10S203/22 ,  C07C57/04

Abstract: On the separation of acrylic acid from reaction gases from the oxidation of propylene or acrolein a countercurrent absorption is carried out with at least 8 parts by weight of carboxylic ester per part by weight of acrylic acid contained in the reaction gas, the dissolved acetic acid and the dissolved water are substantially completely expelled from the resulting absorption solution at elevated temperature by means of inert gases, the loaded inert gases are passed to the countercurrent absorption for the recovery of the acrylic acid contained therein, and the acrylic acid is distilled off under reduced pressure from the carboxylic ester solution which is free from acetic acid and water.

Abstract translation: 在从丙烯或丙烯醛的氧化反应气体中分离丙烯酸的同时，对于反应气体中所含的每重量份丙烯酸中的至少8重量份的羧酸酯，溶解的乙酸和 溶解的水通过惰性气体在升高的温度下基本上完全从所得吸收溶液中排出，所加载的惰性气体被传递到逆流吸收以回收其中所含的丙烯酸，并且将丙烯酸在还原 来自不含乙酸和水的羧酸酯溶液的压力。

公开(公告)号：US3606732A

公开(公告)日：1971-09-21

申请号：US3606732D

申请日：1968-11-04

Applicant: BASF AG

Inventor： WOERNER ALFRED ,  DUEMBGEN GERD ,  SPERBER HEINRICH ,  HAAS HANS ,  GRABOWSKY OTTO

IPC: C07C47/058 ,  C07C45/00 ,  C07C45/38 ,  C07C45/78 ,  C07C67/00 ,  B01D53/16

CPC classification number: C07C45/38 ,  C07C45/783 ,  C07C47/04

Abstract: A PROCESS FOR THE ABSORPTION OF FORMALDEHYDE FROM GAS CONTAINING FORMALDEHYDE (OBTAINED IN THE DEHYDROGENATING OXIDATION OF METHANOL OVER SILVER CATALYSTS) AT ELEVATED TEMPERATURE IN A PLURALITY OF STAGES, WHEREIN THE GAS PASSES THROUGH AT LEAST THREE ABSORPTION STAGES AT TEMPERATURES OF FROM 60* TO ABOUT 90*C., PAARICULARLY FROM 70* TO 85*C., AND IS CONTACTED IN EACH OF THE STAGES FROM THE FIRST STAGE TO THE PENULTIMATE STAGE WITH AN AQUEOUS SOLUTION OF A UREA-FORMALDEHYDE PRECONDENSATE AND IN THE FINAL STAGE IS CONTACTED WITH AN AQUEOUS SOLUTION OF UREA.

公开(公告)号：CA1001655A

公开(公告)日：1976-12-14

申请号：CA179316

申请日：1973-08-21

Applicant: BASF AG

Inventor： DUEMBGEN GERD ,  ENGELBACH HEINZ ,  FREY WALTER ,  KRABETZ RICHARD ,  LEBERT ULRICH ,  THIESSEN FRITZ ,  WILLERSINN CARL-HEINZ

IPC: B01D53/14 ,  B01D53/72 ,  B01D53/77 ,  C07C51/00 ,  C07C51/25 ,  C07C51/48 ,  C07C57/07 ,  C07C67/00

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：DK250184A

公开(公告)日：1984-11-26

申请号：DK250184

申请日：1984-05-22

Applicant: BASF AG ,  LINDE AG

Inventor： BROECKER FRANZ JOSEF ,  DUEMBGEN GERD ,  PIES WOLFGANG ,  SCHLICHTHAERLE GOTTFRIED ,  WEBER GUENTHER

IPC: C07C29/15 ,  C07C29/154 ,  C07C31/04 ,  C07C

Abstract: Methanol is prepared by catalytic conversion of a synthesis gas mixture, containing hydrogen, carbon monoxide, carbon dioxide and/or water, at from 200 DEG to 320 DEG C. and under from 30 to 300 bar in adiabatic and/or isothermal reactions in the presence of a catalyst containing copper and zinc, by a process in which the fresh catalyst is reduced with a hydrogen-containing gas before the start-up of the process, and then the synthesis is started under conventional conditions and is continued until the formation of methanol in the reaction zone has declined substantially, after which the reaction is interrupted and the catalyst is regenerated.

公开(公告)号：CA894254A

公开(公告)日：1972-02-29

申请号：CA894254D

Applicant: BASF AG

Inventor： DUEMBGEN GERD ,  WALZ HELMUT ,  HOHENSCHUTZ HEINZ ,  KERBER HORST ,  HEESEMANN GUENTHER ,  ROTHE ROBERT ,  GAERTNER DIETER

公开(公告)号：CA1194030A

公开(公告)日：1985-09-24

申请号：CA421118

申请日：1983-02-08

Applicant: BASF AG

Inventor： DANZ ECKEHARD ,  DUEMBGEN GERD ,  MIESEN ERNEST ,  SCHMIDT JOHANNES E ,  WIRTH FRIEDRICH

IPC: C07D307/60 ,  C07C51/573 ,  C07D307/89

Abstract: A process for the continuous isolation of phthalic anhydride and maleic anhydride from the reaction gases obtained by catalytic oxidation of o-xylene or naphthalene with air, wherein the reaction gases are treated with a hydrocarbon of boiling range from 115 to 175.degree.C as the solvent in a column, and are then treated with an organic solvent of boiling range from 180 to 290.degree.C in a second column, the phthalic anhydride and maleic anhydride being isolated from the liquid bottom product of the first column.

公开(公告)号：CA1095491A

公开(公告)日：1981-02-10

申请号：CA279112

申请日：1977-05-25

Applicant: BASF AG

Inventor： KRABETZ RICHARD ,  HERRMANN WALTER ,  SCHOLZ NORBERT ,  ENGELBACH HEINZ ,  ENGERT GERD-JUERGEN ,  WILLERSINN CARL-HEINZ ,  DUEMBGEN GERD ,  THIESSEN FRITZ

IPC: B01J23/00 ,  B01J23/24 ,  B01J23/28 ,  B01J23/30 ,  B01J23/31 ,  B01J23/34 ,  B01J23/88 ,  B01J23/89 ,  B01J37/02 ,  C07B61/00 ,  C07C51/00 ,  C07C51/25 ,  C07C57/055 ,  C07C67/00 ,  B01J23/16

Abstract: O.Z. 32,051 Catalysts which consist of a molded carrier, the surface of which is coated with an active catalyst composition of the general formula Mo12AaBbCcDdOx, where A is V and/or W, B is Cu and/or Fe and/or Mn and/or Ni and/or Cr, C is Nb and/or Ta and/or Bi and/or Sb and/or Sn and/or Th and/or Ce and/or U, D is Li and/or Na and/ or K and/or Rb and/or Cs and/or T1 and a is from 0.1 to 18, b is from O to 8, c is from O to 10, d is from O to 2 and x is from 36 to 135, which are particularly active and selective for the oxidation of acrolein and methacrolein with oxygen-containing gases to give acrylic acid and methacrylic acid, respectively, are obtained by first manufacturing the catalyst composition, before applying it to the carrier, from thermally easily decomposed salts of the components by mixing aqueous solutions, slurries or moist solid masses of the salts of the components, drying the mixture and calcining the dried composition at from 140 to 600.degree.C, then milling it to a particle size of less than 150/um and thereafter applying it, as a mixture with water, as a layer from 10 to 1,500 um thick, to the premolded carrier, which has a rough surface.

公开(公告)号：GB1135476A

公开(公告)日：1968-12-04

申请号：GB1524066

申请日：1966-04-06

Applicant: BASF AG

Inventor： AMBROS DIETER ,  BAUMEISTER WILHELM ,  DUEMBGEN GERD ,  GERLOFF ULRICH

IPC: C07C45/38 ,  C07C47/055

Abstract: 1,135,476. Oxidation of methanol. BADISCHE ANILIN- & SODA-FABRIK A.G. 6 April, 1966 [7 April, 1965], No. 15240/66. Heading C2C. Production of formaldehyde by removing a fraction of lower boiling point than methanol from a crude liquid methanol, vaporizing the remainder, subjecting the resulting vapour to oxidative dehydrogenation with oxygen or a gas containing free oxygen in contact with a metallic silver catalyst, optionally in the presence of steam, at elevated temperature to form formaldehyde characterized by adding alkali to the crude methanol before, during and/or after removal of the said fraction of lower boiling point than methanol and before vaporization of the remainder. The liquid crude methanol used is obtained by conventional methods from carbon monoxide and hydrogen and may contain water and other specified impurities. The fraction of lower boiling point than methanol may be contaminated with iron carbonyl and boils in the range 55‹ to 64‹ C. The preferred alkalis are hydroxides, oxides or carbonates of the alkali metals or alkaline earth metals in solid form or dissolved in water and are added, at a temperature in the range 30‹ to 150‹ C., in amounts such that a pH of 11 to 13À5 is established in the crude liquid methanol. Conventional metallic silver catalysts are used in the oxidative dehydrogenation which is effected at from 400‹ to 750‹ C.

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.