公开(公告)号：DE1812120A1

公开(公告)日：1970-06-11

申请号：DE1812120

申请日：1968-12-02

Applicant: BASF AG

Inventor： DIETER FROMM DR ,  WILHELM LEONHARD DR KARL ,  RUDOLPH MOHR DR ,  MATTHIAS SCHWARZMANN DR ,  HORST WOEHRLE DR

IPC: B24B9/14 ,  C07D251/60 ,  C07D55/28

Abstract: 1282298 Melamine BADISCHE ANILIN- & SODA-FABRIK AG 1 Dec 1969 [2 Dec 1968] 58506/69 Heading C2C Melamine is produced by reacting urea and/or its thermal decomposition products, in the presence of ammonia, using a fluidized-bed catalyst at elevated temperature, the catalyst being an aluminium oxide which has been obtained by treating at 150‹ to 450‹ C. with urea or decomposition products formed therefrom in that temperature range, an aluminium hydroxide which has not previously been calcined and which can be converted by dehydration into a heat-stable oxide. The catalyst may be produced in situ from the appropriate aluminium hydroxide.