公开(公告)号：DE2145851A1

公开(公告)日：1973-03-22

申请号：DE2145851

申请日：1971-09-14

Applicant: DEGUSSA

Inventor： FRIEDRICH HEINZ DR DIPL CHEM ,  NEUGEBAUER WALTER DIPL CHEM DR

IPC: C07C47/052 ,  B01J23/88 ,  B01J23/881 ,  C07B61/00 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  B01J11/54

Abstract: 1397153 Formaldehyde DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 7 Sept 1972 [14 Sept 1971] 41551/72 Heading C2C [Also in Division B1] Formaldehyde is produced by the oxidation of methanol with a free oxygen-containing gas at elevated temperature over a catalyst comprising oxidic compounds of molybdenum and iron in a weight ratio calculated as MoO 3 to Fe 2 O 3 of less than 10 to 1 and having a titanium dioxide content of up to 90% wt, wherein the catalyst has been prepared by a specified method of coprecipitation, shaping and calcining (see Division B1). The oxidation is effected at 275-310‹ C., using a methanol to air molar ratio of from 129 : 1 to 15 : 1 by passage of the gas mixture through a tubular reactor immersed in an oil bath.

公开(公告)号：CZ9202633A3

公开(公告)日：1993-04-14

申请号：CS263392

申请日：1992-08-26

Applicant: DEGUSSA

Inventor： PFEFFERLE WALTER DR DIPL BIOL ,  LOTTER HERMANN DR DIPL CHEM ,  FRIEDRICH HEINZ DR DIPL CHEM ,  DEGENER WOLFGANG DR DIPL CHEM

IPC: C12P13/00 ,  C07K16/00 ,  C12N1/20 ,  C12P13/04 ,  C12P13/08 ,  C12R1/15

CPC classification number: C07K16/00 ,  C12P13/04 ,  C12P13/08

公开(公告)号：DE3267083D1

公开(公告)日：1985-12-05

申请号：DE3267083

申请日：1982-02-23

Applicant: DEGUSSA

Inventor： BESCHKE HELMUT ,  FRIEDRICH HEINZ DR DIPL CHEM ,  HEILOS JOHANNES

IPC: B01J23/16 ,  B01J21/16 ,  B01J23/22 ,  B01J23/34 ,  B01J23/84 ,  B01J23/847 ,  B01J35/10 ,  C07B61/00 ,  C07D213/84 ,  C07D213/85

公开(公告)号：DE3166837D1

公开(公告)日：1984-11-29

申请号：DE3166837

申请日：1981-07-25

Applicant: DEGUSSA

Inventor： BESCHKE HELMUT ,  DAHM FRANZ-LUDWIG DIPL ING ,  FRIEDRICH HEINZ DR DIPL CHEM ,  PRESCHER GUNTER DR DIPL CHEM

IPC: C07D213/82 ,  C07D213/81

公开(公告)号：CZ263392A3

公开(公告)日：1993-04-14

申请号：CS263392

申请日：1992-08-26

Applicant: DEGUSSA

Inventor： PFEFFERLE WALTER DR DIPL BIOL ,  LOTTER HERMANN DR DIPL CHEM ,  FRIEDRICH HEINZ DR DIPL CHEM ,  DEGENER WOLFGANG DR DIPL CHEM

IPC: C12P13/00 ,  C07K16/00 ,  C12N1/20 ,  C12P13/04 ,  C12P13/08 ,  C12R1/15

Abstract: The invention relates to a process for the fermentative production of amino acids, in which a strain of the genera Brevibacterium or Corynebacterium producing one or more amino acids is cultured in a nutrient medium and, at the end of the fermentation, the amino acid(s) is/are isolated from the culture fluid, which process is characterised in that following the strong growth phase the bacterial culture has less assimilable carbon source available than it could metabolise on account of the strain construction and of the amount of the otherwise necessary supplements provided in the nutrient medium.

公开(公告)号：DE3273159D1

公开(公告)日：1986-10-16

申请号：DE3273159

申请日：1982-06-18

Applicant: DEGUSSA

Inventor： BESCHKE HELMUT ,  DAHM FRANZ LUDWIG DIPL ING ,  FRIEDRICH HEINZ DR DIPL CHEM

IPC: C07D213/84 ,  C07D213/85

Abstract: The gaseous mixture resulting from the catalytic reaction of 3-methylpyridine with ammonia and oxygen is treated with water to recover 3-cyanopyridine. The treatment takes place in two steps. In the first step there is used a temperature of about 30 DEG to 60 DEG C. and in the second step at a temperature about 10 DEG to 30 DEG C. lower than in the first step.

公开(公告)号：DE3166836D1

公开(公告)日：1984-11-29

申请号：DE3166836

申请日：1981-07-25

Applicant: DEGUSSA

Inventor： BESCHKE HELMUT ,  DAHM FRANZ-LUDWIG DIPL ING ,  FRIEDRICH HEINZ DR DIPL CHEM ,  PRESCHER GUNTER DR DIPL CHEM

IPC: C07D213/82 ,  C07D213/81

Abstract: Crude nicotinamide is purified by a recrystallization and in this way freed especially from nicotinic acid and salts of nicotinic acid. As solvent there is used a 2-methylpropanol-1 containing water. The recrystallization takes place at a pH between about 7 and 10.