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

• Leiner Semprún Universidad del Zulia-Venezuela
• Roger Solano Universidad del Zulia-Venezuela
• Jorge Sánchez Universidad del Zulia-Venezuela
• Gabriela Carruyo Universidad del Zulia-Venezuela
• Miguel íngel Ramos 2Instituto Zuliano de Investigaciones Tecnológicas-Venezuela
• José Antonio Enao 2Instituto Zuliano de Investigaciones Tecnológicas-Venezuela
• Reinaldo Atencio 2Instituto Zuliano de Investigaciones Tecnológicas-Venezuela
• Tereza Bandosz The City College of The City of New York-Estados Unidos
• Mykola Seredych The City College of The City of New York-Estados Unidos
• Alexander Moronta Universidad del Zulia-Venezuela

Palabras clave: H2S removal, montmorillonite, template method

Resumen

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.