An electrocatalytic membrane-assisted process for hydrogen production from H2S in Black Sea: Preliminary results. (29th June 2015)

• Record Type: Journal Article
• Authors: Ipsakis, D.; Kraia, Tz.; Marnellos, G.E.; Ouzounidou, M.; Voutetakis, S.; Dittmeyer, R.; Dubbe, A.; Haas-Santo, K.; Konsolakis, M.; Figen, H.E.; Güldal, N.O.; Baykara, S.Z.
• Is Part Of: International journal of hydrogen energy. Volume 40:Number 24(2015)
• Page Start: 7530
• Page End: 7538
• Publication Date: 2015-06-29
• Subjects: Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2014.12.017
• Languages: English
• ISSNs: 0360-3199

Abstract

<abstract xml:lang="en" abstract-type="author" id="abs0010"> <title id="sectitle0010">Abstract</title> <sec> <p id="abspara0010">The feasibility of hydrogen production by the decomposition of H<sub>2</sub>S in an electrocatalytic membrane reactor for the exploitation of H<sub>2</sub>S contained in Black Sea water is investigated. A micro-structured electrochemical membrane reactor with a proton-conducting ceramic membrane is considered for processing gaseous H<sub>2</sub>S diluted (1 vol.%) in H<sub>2</sub>O mixtures. Y-doped barium zirconate (BaZr<sub>0.85</sub>Y<sub>0.15</sub>O<sub>3−δ</sub>) is employed as solid electrolyte. Ceria supported transition metal (Co, Ni, Fe, Cu) catalysts and LaCrO<sub>3</sub> composites are explored as anode materials and La<sub>0.6</sub>Sr<sub>0.4</sub>Co<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3−δ</sub> perovskite type oxides are used as cathode electrodes. Preliminary results concern materials preparation and characterization of the catalytic performance of anodic electrode materials. Co/CeO<sub>2</sub> composites show excellent H<sub>2</sub>S conversion and stability performance in wet and dry atmospheres at 873–1123 K. Presence of water has a beneficial effect on the H<sub>2</sub> formation, in accordance with thermodynamics. The overall process starting from H<sub>2</sub>S containing sea water to H<sub>2</sub> generation in the membrane reactor and H<sub>2</sub>SO<sub>4</sub> production in a sequential step is simulated and its energy balance is discussed.</p> </sec> </abstract>