E3S Web Conf.
Volume 83, 20192018 International Symposium on Hydrogen Energy and Energy Technologies (HEET 2018)
|Number of page(s)||10|
|Published online||11 February 2019|
Material screening for two-step thermochemical splitting of H2S using metal sulfide
Department of Chemical Engineering, Khalifa University, Masdar Institute, Masdar City,
P.O. Box 54224,
The United Arab Emirates
2 Center for Catalysis and Separation, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
* Corresponding author: firstname.lastname@example.org
Associated with the rise in energy demand is the increase in the amount of H2S evolved to the environment. H2S is toxic and dangerous to life and the environment, thus, the need to develop efficient and costeffective ways of disposing of the H2S gas has become all-important. To this end, a two-step thermochemical H2S splitting cycle is proposed in this work which does more than just getting rid of the toxic gas but has the potential to produce valuable H2 gas as well as store the solar heat energy. Studies have proved that the type of material used, such as metal sulfides, is critical to the efficiency of this thermochemical splitting process. As follows, this study focuses on establishing a criterion to aid in selecting favorable metal sulfides for application and further development in the H2S thermochemical decomposition sphere. Using a computational approach, via the HSC Chemistry 8®, evaluations such as the equilibrium yield from the sulfurization and decomposition reaction steps, the temperature required for reaction spontaneity, and the Reversibility Index were determined. Investigations proved that sulfides of Zirconium, Niobium, and Nickel were auspicious candidates for the thermochemical decomposition.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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