C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 251/60 (2006.01) C07D 251/62 (2006.01)
Patent
CA 2097177
2097177 9209585 PCTABS00013 The invention relates to a selective removal of impurities from the gas stream leaving a melamine synthesis reactor in the preparation of melamine from urea by means of a treatment with steam at elevated temperature in the presence of a catalyst which is shape-selective. For instance a molecular sieve is chosen.
Janssen Hendrik J.
Schroijen Josephus C.
Van de Moesdijk Cornelis G. M.
Dsm N.v.
Fetherstonhaugh & Co.
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