Patent classifications
C
CHEMISTRY; METALLURGY
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C01
INORGANIC CHEMISTRY
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C01C
AMMONIA; CYANOGEN; COMPOUNDS THEREOF
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C01C1/02
Preparation,; purification; or separation of ammonia
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C01C1/04
Preparation of ammonia by synthesis; in the gas phase
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C01C1/0405
from N2 and H2 in presence of a catalyst
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