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C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen
C01B3/02—Production of hydrogen; Production of gaseous mixtures containing hydrogen
C01B3/025—Preparation or purification of gas mixtures for ammonia synthesis
Verfahren zur Waermebehandlung von Metallen und Metallegierungen, insbesondere von Eisen und Stahl in Form von Platinen, Blechen, Bandeisen, Draehten u. dgl. in einer Wasserstoffatmosphaere