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：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：CA1037060A

公开(公告)日：1978-08-22

申请号：CA182867

申请日：1973-10-09

Applicant: BASF AG

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

IPC: C07C47/22 ,  B01J21/00 ,  B01J23/00 ,  B01J23/28 ,  B01J23/31 ,  B01J23/88 ,  B01J23/887 ,  B01J23/888 ,  C07B61/00 ,  C07C45/00 ,  C07C45/34 ,  C07C45/35 ,  C07C51/25 ,  C07C67/00 ,  C07C255/08 ,  C07C45/04

Abstract: In the oxidation of .alpha.-olefins in the gas phase to a, .beta.-olefinically unsaturated aldehydes with molecular oxygen in the presence of an inert gas using a catalyst containing molybdenum and bismuth with elements as oxides or mixed oxides at from 280.degree. to 450.degree.C, a content of indium and/or lanthanum as oxide or mixed oxide results in an improvement in the conversion and/or activity and/or life of the catalyst.