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Selective Adsorption of Thiols Using Gold Nanoparticles Supported on Metal Oxides.
Sui, Ruohong; Lesage, Kevin L; Carefoot, Sarah K; Fürstenhaupt, Tobias; Rose, Chelsea J; Marriott, Robert A.
Afiliación
  • Sui R; Department of Chemistry, University of Calgary , 2500 University Drive, Northwest, Calgary, Alberta, Canada T2L 1N4.
  • Lesage KL; Department of Chemistry, University of Calgary , 2500 University Drive, Northwest, Calgary, Alberta, Canada T2L 1N4.
  • Carefoot SK; Department of Chemistry, University of Calgary , 2500 University Drive, Northwest, Calgary, Alberta, Canada T2L 1N4.
  • Fürstenhaupt T; Health Science Center, University of Calgary , 3330 Hospital Drive, Northwest, Calgary, Alberta, Canada T2N 4N1.
  • Rose CJ; Department of Chemistry, University of Calgary , 2500 University Drive, Northwest, Calgary, Alberta, Canada T2L 1N4.
  • Marriott RA; Department of Chemistry, University of Calgary , 2500 University Drive, Northwest, Calgary, Alberta, Canada T2L 1N4.
Langmuir ; 32(36): 9197-205, 2016 09 13.
Article en En | MEDLINE | ID: mdl-27552141
Selective capture of thiols from a synthetic hydrogen sulfide containing mixture using supported nanogold materials has been explored for the potential removal of thiols from sour gas production fluids. In this research, TiO2-, Al2O3-, SiO2-, and ZnO-supported gold nanoparticles have been studied for their usage as regeneratable adsorbents to capture CH3SH, C2H5SH, and i-C3H7SH. Au/TiO2 and Au/Al2O3 showed promising properties for removing the thiols efficiently from a gas-phase mixture; however, Au/Al2O3 did catalyze some undesirable side reactions, e.g., carbonyl sulfide formation. It was found that a mild temperature of T = 200 °C was sufficient for regeneration of either Au/TiO2 or Au/Al2O3 adsorbent. The metal oxide mesopores played an important role for accommodating gold particles and chemisorption of the thiols, where smaller pore sizes were found to inhibit the agglomeration/growth of gold particles. The nature of thiol adsorption and the impact of multiple adsorption-desorption cycles on the adsorbents have been studied using electron microscopy, XPS, XRD, GC, and physi/chemiadsorption analyses.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Langmuir Asunto de la revista: QUIMICA Año: 2016 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Langmuir Asunto de la revista: QUIMICA Año: 2016 Tipo del documento: Article Pais de publicación: Estados Unidos