Catalytic Activity of W-O and Fe-O in H2S Decomposition

Ataseven Y., Doğan M. Y., Yaşyerli S., Taşdemir H. M., Arbağ H., Yaşyerli N.

8th International Hydrogen Technologies, Diyarbakır, Türkiye, 12 - 15 Mayıs 2024, ss.174-177

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Diyarbakır
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.174-177
  • Gazi Üniversitesi Adresli: Evet

Özet

The catalytic thermal H2S decomposition reaction has recently attracted intense attention from researchers for the production of COx-free H2. In this study, tungsten oxide (W-O) and iron oxide (Fe-O) catalysts were prepared by the complexation method. Catalytic activity tests of single metal oxides were performed in a continuously flow packed-bed reactor system at 800 °C using a conventional heating system and 1% H2S-N2 mixture. Catalysts properties were determined using XRD, EDS and N2-Adsorption-desorption technique. As a result of activity tests, 12% H2S and 4% H2S conversions were obtained with W-O catalyst and Fe-O catalyst, respectively. At the same temperature and gas composition, the thermodynamic equilibrium H2S conversion is 28%. Activity test results performed in 60 minutes showed that the W-O catalyst was more stable and had higher activity in obtaining H2 through H2S decomposition. Synthesis and characterization studies continue within the scope of this study.

 

Keywords: Tungsten, Iron, H2 Production, H2S decomposition