公开(公告)号：DE2758953A1

公开(公告)日：1978-07-06

申请号：DE2758953

申请日：1977-12-30

Applicant: STAMICARBON

Inventor： VANDENBOOREN FRANCISCUS HENRIC ,  VERHEIJEN EGIDIUS JOHANNES MAR

IPC: C07D233/74 ,  B01J23/00 ,  C07B61/00 ,  C07C67/00 ,  C07C239/00 ,  C07C273/18 ,  C07C275/16 ,  C07D233/76 ,  C07D237/04 ,  C07C127/15

公开(公告)号：DE3567846D1

公开(公告)日：1989-03-02

申请号：DE3567846

申请日：1985-03-05

Applicant: STAMICARBON

Inventor： VAN HARDEVELD RUDOLF ,  VAN DE MOND THEODORUS JOHANNES ,  VANDENBOOREN FRANCISCUS HENRIC

IPC: B01J35/10 ,  C01C3/16

Abstract: An improved process for the preparation of cyanamide or a cyanamide-containing gas mixture by passing urea and/ or urea decomposition products over a catalyst at a temperature in the range of between about 200°C and 600°C. A porous catalyst is utilized which has an intracrystalline pore diameter of at most 8 A, whereby a high conversion to cyanamide is obtained and the formation of melamine by-products is substantially reduced.

公开(公告)号：AT40343T

公开(公告)日：1989-02-15

申请号：AT85200320

申请日：1985-03-05

Applicant: STAMICARBON

Inventor： VAN HARDEVELD RUDOLF ,  VAN DE MOND THEODORUS JOHANNES ,  VANDENBOOREN FRANCISCUS HENRIC

IPC: B01J35/10 ,  C01C3/16

Abstract: An improved process for the preparation of cyanamide or a cyanamide-containing gas mixture by passing urea and/ or urea decomposition products over a catalyst at a temperature in the range of between about 200°C and 600°C. A porous catalyst is utilized which has an intracrystalline pore diameter of at most 8 A, whereby a high conversion to cyanamide is obtained and the formation of melamine by-products is substantially reduced.

公开(公告)号：DE2715518A1

公开(公告)日：1977-10-27

申请号：DE2715518

申请日：1977-04-06

Applicant: STAMICARBON

Inventor： KONIJNENBERG ERIK NUTH ,  VANDENBOOREN FRANCISCUS HENRIC ,  VERHEIJEN EGIDIUS JOHANNES MAR

IPC: C07D233/74 ,  B01J23/00 ,  C07B61/00 ,  C07C67/00 ,  C07C239/00 ,  C07C273/18 ,  C07C275/16 ,  C07D233/76 ,  C07D237/06