IPC Main Group
C01B 3/00 Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen
Introduced: January 1980
Last revised: January 2026
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- INORGANIC CHEMISTRY
- Subclass:
- NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
Related Keywords
AMMONIA synthesis gasHYDROGENgas mixture containing HYDROGENSYNTHESIS gasWATER gas
5 direct subcodes
Child Classifications
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- C01B 3/0005 Reversible storage of hydrogen, e.g. by hydrogen getters or electrodes
- C01B 3/0089 Ortho-para conversion
- C01B 3/0094 Atomic hydrogen
- C01B 3/02 Production of hydrogen; Production of gaseous mixtures containing hydrogen
- C01B 3/5 Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification