5.
    发明专利
    未知

    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

    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.

Patent Agency Ranking