Hydrogen production from a chemical cycle of H2S splitting

Apparent kinetics of a gas–liquid–liquid system of Bunsen reaction with iodine-toluene solution for hydrogen production through H2S splitting cycle

“…The Bunsen reaction, i.e., reaction (2) in the abstract, is the center reaction in the H 2 S splitting cycle [1] as well as in the SulfureIodine (SeI) water splitting cycle for hydrogen production. General Atomics (GA) Company developed the Bunsen reaction stoichiometry according to the following reaction, reaction (4) [2], which suggested to operate the Bunsen reaction in a large excess of iodine and water in order to separate the two acid products into two immiscible liquid phases: a heavy HIx phase and a light sulfuric acid phase [3e5]:…”

Kinetics of hydrogen iodide decomposition over activated carbon catalysts in pellets

“…), thermochemical 'watersplitting' cycles have been considered and studied, aiming at replacing this reaction with two or more reactions which require very lower temperatures and whose sum is again water decomposition. Among the many cycles proposed and studied for this purpose [1,2], the iodine-sulfur (I-S) process, developed by General Atomic in 1970s [3,4], seems to be one of the most promising, as demonstrated in an experimental test loop [5][6][7].…”

Biohydrogen

“…The sulfur-iodine thermochemical water-splitting cycle (S-I cycle) developed for hydrogen production from water is fundamentally based on the following three chemical reactions (Wang, 2007): This new cycle cannot only produce more H 2 and extra H 2 SO 4 but also facilitate a flexible H 2 to H 2 SO 4 production ratio. In gas plants, H 2 from H 2 S splitting is an alternative clean fuel.…”