Revista Técnica de la Facultad de Ingeniería (May 2011)

Removal of H2S using a natural clay modified with a surfactant and incorporating Cu, Fe and Zn into the structure

  • Leiner Semprún,
  • Roger Solano,
  • Jorge Sánchez,
  • Gabriela Carruyo,
  • Miguel íngel Ramos,
  • José Antonio Enao,
  • Reinaldo Atencio,
  • Tereza Bandosz,
  • Mykola Seredych,
  • Alexander Moronta

Journal volume & issue
Vol. 34, no. 1

Abstract

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Mesoporous solids were used for hydrogen sulfide removal from stream H2S-Air. These solids were synthesized from a natural montmorillonite clay (STx-1) using the template method with a non-ionic surfactant and exchanged with Fe3+, Cu2+ and Fe3+-Cu2+; additionally, MgO/surfactant-clay solids impregnated with different contents of Zn, Fe-Zn and Cu-Zn were also prepared. The solids were characterized by using XRF, XRD, surface area, TPR and TGA-DTG. An increase in the surface area, pore volume and mesoporosity of STx-1 modified with surfactant was observed. The natural clay modified with surfactant and exchanged with copper cation enhanced the H2S breakthrough capacity. The STx-1 clay impregnated with zinc improved H2S removal, which increased with increasing the zinc content.

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