High temperature production of hydrogen: Assessment of non-renewable resources technologies and emerging trends

Conventional productions of large volume of hydrogen from fossil based resources continue to play a key role in the hydrogen economy. This paper recalls the contribution of these conventional technologies with new technological development and researches. Providing gradual integration of renewable solutions into large-scale production, some emerging developments in the use of the renewable based feedstock and energy resources in reforming processes in order to bridge the gaps from conventional use of fossil feedstock to improve various conversion processes were discussed. This paper focuses on high temperature process technologies for producing hydrogen via non-renewable resources and various industrial technologies and processes (700 degrees C and above) for the beneficiation of the available carbonaceous feedstocks like natural gas, other hydrocarbons (other fossil based options), coal etc. The paper concludes with the analysis of some development gaps in hydrogen production from various resources, which interplays between the renewable and non-renewable resources as well as likely future trends that should be expected in the Gasification hydrogen market in the next decades. (C) 2019 Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC.