An electrocatalytic membrane-assisted process for hydrogen production from H2S in Black Sea: Preliminary results

Ipsakis D., Kraia T., Marnellos G. E., Ouzounidou M., Voutetakis S., Dittmeyer R., ...Daha Fazla

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, cilt.40, ss.7530-7538, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 40
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.ijhydene.2014.12.017
  • Dergi Adı: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.7530-7538
  • Anahtar Kelimeler: Hydrogen production, Hydrogen sulphide, Electro-catalytic membrane reactors, Proton conducting solid electrolyte, Electro-catalysis, Integrated process energy analysis, FUEL-CELL, THERMAL-DECOMPOSITION, CHEMICAL-STABILITY, SULFIDE, SULFUR, ELECTROLYTE, OZONATION, OXIDATION, KINETICS, REMOVAL
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

The feasibility of hydrogen production by the decomposition of H2S in an electrocatalytic membrane reactor for the exploitation of H2S contained in Black Sea water is investigated. A micro-structured electrochemical membrane reactor with a proton-conducting ceramic membrane is considered for processing gaseous H2S diluted (1 vol.%) in H2O mixtures. Y-doped barium zirconate (BaZr0.83Y0.15O3-delta) is employed as solid electrolyte. Ceria supported transition metal (Co, Ni, Fe, Cu) catalysts and LaCrO3 composites are explored as anode materials and La0.6Sr0.4CO0.2Fe0.8O3-delta perovskite type oxides are used as cathode electrodes. Preliminary results concern materials preparation and characterization of the catalytic performance of anodic electrode materials. Co/CeO2 composites show excellent H2S conversion and stability performance in wet and dry atmospheres at 873-1123 K. Presence of water has a beneficial effect on the H-2 formation, in accordance with thermodynamics. The overall process starting from H2S containing sea water to H-2 generation in the membrane reactor and H2SO4 production in a sequential step is simulated and its energy balance is discussed.