A hybrid thermochemical-electrolytic process for hydrogen production based on the Reverse Deacon Reaction.

Conference · Tue Aug 01 04:00:00 EDT 2006 · Int. J. Hydrogen Energy

DOI:https://doi.org/10.1016/j.ijhydene.2005.08.014· OSTI ID:967243

Simpson, M F; Herrmann, S D; Boyle, B D

Development has been initiated on a three-reaction, hybrid thermochemical-electrolytic process for splitting water into hydrogen and oxygen. This process can be run at 500 C, making it suitable for linking to nuclear reactors that run colder than the very highest temperature gas cooled reactors. This feature also makes the materials requirements less stringent than for high temperature cycles, many of which require temperatures in the range of 800-900 C. The process consists of three reactions - two thermochemical and one electrolytic. The thermochemical reactions sum to the reverse Deacon reaction. The electrolytic step involves the electrolysis of anhydrous HCl. The estimated energy savings for this process relative to electrolysis of water are in the vicinity of 15%, due to the low energy requirements of anhydrous HCl electrolysis. Preliminary experimental results indicate that a silicalite-supported catalyst for the reverse Deacon reaction has the potential of promoting fast reaction kinetics and long-term stability of the solids.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: LDRD
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 967243
• Report Number(s): ANL/ENT/CP-113770
• Conference Information: Journal Name: Int. J. Hydrogen Energy Journal Issue: 9 ; Aug. 2006 Journal Volume: 31
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

08 HYDROGEN
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
CATALYSTS
ELECTROLYSIS
ENGINEERS
GAS COOLED REACTORS
HYDROGEN
HYDROGEN PRODUCTION
OXYGEN
REACTION KINETICS
REACTORS
STABILITY
WATER