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

Abstract:

Mesoporous solids were used for hydrogen sulfide removal from stream H <inf>2</inf>S-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 H<inf>2</inf>S breakthrough capacity. The STx-1 clay impregnated with zinc improved H<inf>2</inf>S removal, which increased with increasing the zinc content.

Año de publicación:

2011

Keywords:

• H2S removal
• Montmorillonite
• Template method

Fuente:

scopus