CO gas-fermentation 1 CO-PROX 1 CO-SMET 1 CO2 methanation 1 Chemical engineering 1 NiS-NiS2 1 Technology: general issues 1 acetic acid 1 active phase 1 aluminum alloy foam 1 ammonia borane 1 bio-photolysis 1 bioalcohol 1 biomass conversion 1 catalyst stability 1 ceria 1 chemical hydrogen 1 cobalt 1 coke 1 dark-fermentation electrolysis 1 gasification 1 hydrogen 1 hydrogen energy and fuel cells 1 hydrogen evolution 1 hydrogen production 1 hydrogen purification 1 impurity 1 kinetic models 1 kinetics 1