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Comparison of dimethyl disulfide and carbon disulfide in sulfurization of activated carbons for producing mercury adsorbents / Neda Asasian in Industrial & engineering chemistry research, Vol. 51 N° 37 (Septembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 37 (Septembre 2012) . - pp. 12046–12057 Titre : Comparison of dimethyl disulfide and carbon disulfide in sulfurization of activated carbons for producing mercury adsorbents Type de document : texte imprimé Auteurs : Neda Asasian, Auteur ; Tahereh Kaghazchi, Auteur Année de publication : 2012 Article en page(s) : pp. 12046–12057 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Activated  carbons  Adsorbents Résumé : In this work, the use of dimethyl disulfide (DMDS) as a sulfurizing impregnator for producing mercury adsorbents for the first time has been investigated and compared with CS2, one of the materials commonly used in this field. Sulfurized adsorbents were characterized by CHNS/O elemental analysis, N2 adsorption/desorption, XPS, and FT-IR spectroscopy. The sulfur contents of CS2 and DMDS modified activated carbons were about 3.2 and 9.6 wt %, respectively. The impregnated sulfur was found in two major organic and elemental forms in granular activated carbon modified with DMDS; however, elemental sulfur was not observed in the case modified with CS2. After comparing the equilibrium capacities and the rates of mercury adsorption, the occurrence of sulfur leaching from the sulfurized adsorbents during the adsorption processes was studied. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3001474 [article] Comparison of dimethyl disulfide and carbon disulfide in sulfurization of activated carbons for producing mercury adsorbents [texte imprimé] / Neda Asasian, Auteur ; Tahereh Kaghazchi, Auteur . - 2012 . - pp. 12046–12057. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 37 (Septembre 2012) . - pp. 12046–12057 Mots-clés : Activated  carbons  Adsorbents Résumé : In this work, the use of dimethyl disulfide (DMDS) as a sulfurizing impregnator for producing mercury adsorbents for the first time has been investigated and compared with CS2, one of the materials commonly used in this field. Sulfurized adsorbents were characterized by CHNS/O elemental analysis, N2 adsorption/desorption, XPS, and FT-IR spectroscopy. The sulfur contents of CS2 and DMDS modified activated carbons were about 3.2 and 9.6 wt %, respectively. The impregnated sulfur was found in two major organic and elemental forms in granular activated carbon modified with DMDS; however, elemental sulfur was not observed in the case modified with CS2. After comparing the equilibrium capacities and the rates of mercury adsorption, the occurrence of sulfur leaching from the sulfurized adsorbents during the adsorption processes was studied. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3001474