公开(公告)号：FI931487A

公开(公告)日：1993-10-04

申请号：FI931487

申请日：1993-04-01

Applicant: BASF AG

Inventor： KIEFER HANS ,  HUPFER LEOPOLD ,  LIPPERT FERDINAND

IPC: C07C51/02 ,  C07C53/02

Abstract: A process for preparing formic acid by thermal cleavage of quaternary ammonium formates of the general formula I (* CHEMICAL STRUCTURE *) (I) where R1, R2 and R3 are C1- to C14-alkyl, C3- to C8-cycloalkyl, aryl or C7- to C16-aralkyl, or together are 1,4- or 1,5-alkylene which is unsubstituted or substituted one to four times by C1-to C4-alkyl, with the proviso that the sum of the carbon atoms of R1, R2 and R3 in the quaternary ammonium formates I is 7 to 40, comprises carrying out the cleavage in the presence of secondary formamides of the general formula II (* CHEMICAL STRUCTURE *) (II) where R4 and R5 are C2- to C10-alkyl, C3- to C8-cycloalkyl, aryl or C7- to C16-aralkyl, or together are 1,4- or 1,5-alkylene which is unsubstituted or substituted one to four times by C1- to C4-alkyl, which formamides boil 30 degrees to 150 degrees C. lower than the tertiary amine of the general formula III (* CHEMICAL STRUCTURE *) (III) where R1, R2 and R3 have the abovementioned meanings, contained in the formate I.

公开(公告)号：FI933664A0

公开(公告)日：1993-08-19

申请号：FI933664

申请日：1993-08-19

Applicant: BASF AG

Inventor： LIPPERT FERDINAND ,  HOEHN ARTHUR

IPC: C07C51/02 ,  C07C51/10 ,  C07C53/02 ,  C07C53/04 ,  C07C53/06

Abstract: Process for the preparation of formic acid by reacting carbon monoxide with water at temperatures from 100 to 250 DEG C and absolute pressures from 100 to 350 bar, by adding, to the reaction mixture, tertiary amines of the general formula I in which R , R and R represent C1- to C14-alkyl, C3- to C8-cycloalkyl, aryl and C7- to C16-aralkyl, or together represent a 1,4- or 1,5-alkylene group which is optionally mono- to tetrasubstituted by C1- to C4-alkyl, with the proviso that the total of the carbon atoms of R , R and R is 3 to 40.