公开(公告)号：DE3028791A1

公开(公告)日：1982-02-25

申请号：DE3028791

申请日：1980-07-30

Applicant: DEGUSSA

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

IPC: C07D213/82 ,  C07D213/81

公开(公告)号：DE3107756A1

公开(公告)日：1982-09-16

申请号：DE3107756

申请日：1981-02-28

Applicant: DEGUSSA

Inventor： BERGSTEIN WOLFGANG DR ,  BESCHKE HELMUT ,  FRIEDRICH HEINZ DIPL CHEM DR ,  KLEEMANN AXEL DIPL CHEM DR ,  PRESCHER GUENTHER DIPL CHEM DR

IPC: B01J21/16 ,  B01J23/22 ,  B01J23/34 ,  B01J23/84 ,  B01J35/10 ,  C07B61/00 ,  C07D241/24 ,  B01J21/08 ,  B01J23/16 ,  C07D213/84

Abstract: For the catalytic reaction of 2-methylpyrazine with ammonia and oxygen to form 2-cyanopyrazine there are used compounds of the elements antimony, vanadium, and oxygen and at least one of the elements iron, copper, titanium, cobalt, manganese, and nickel, whereby the atomic ratio of antimony to vanadium is greater than 1 and which contain besides these compounds a lattice layer silicate and a highly dispersed silica. These catalysts are very selective and result in high yields and high space-time-yields.

公开(公告)号：DE3107755A1

公开(公告)日：1982-09-16

申请号：DE3107755

申请日：1981-02-28

Applicant: DEGUSSA

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

IPC: B01J23/16 ,  B01J21/16 ,  B01J23/22 ,  B01J23/34 ,  B01J23/84 ,  B01J23/847 ,  B01J35/10 ,  C07B61/00 ,  C07D213/84 ,  C07D213/85 ,  B01J23/76 ,  B01J21/08

公开(公告)号：DE2304762A1

公开(公告)日：1974-08-15

申请号：DE2304762

申请日：1973-02-01

Applicant: DEGUSSA

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

IPC: C07C47/052 ,  B01J8/34 ,  C07C45/00 ,  C07C45/38 ,  C07C47/04 ,  C07C47/055 ,  C07C67/00

公开(公告)号：DE3028904A1

公开(公告)日：1982-02-25

申请号：DE3028904

申请日：1980-07-30

Applicant: DEGUSSA

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

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.

公开(公告)号：DE2554946A1

公开(公告)日：1977-06-23

申请号：DE2554946

申请日：1975-12-06

Applicant: DEGUSSA

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

IPC: C07D213/08 ,  C07D213/09 ,  C07D213/12 ,  C07D213/16