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Adsorption of Carbonyl Sulfide on Propylamine Tethered to Porous Silica
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för material- och miljökemi (MMK).
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för material- och miljökemi (MMK).ORCID-id: 0000-0002-7284-2974
Rekke forfattare: 22018 (engelsk)Inngår i: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 34, nr 26, s. 7708-7713Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Carbonyl sulfide (COS) reacts slowly with amines in the aqueous solutions used to absorb CO2 from natural gas and flue gas and can also deactivate certain aqueous amines. The effects of COS on amines tethered to porous silica, however, have not been investigated before. Hence, the adsorption of COS on aminopropyl groups tethered to porous silica was studied using in situ IR spectroscopy. COS chemisorbed mainly and reversibly as propylammonium propylthiocarbamate ion pairs [R-NH(C= O)S- +H3N-R] under dry conditions. In addition, a small amount of another chemisorbed species formed slowly and irreversibly. Nevertheless, the CO2 capacities of the adsorbents were fully retained after COS was desorbed.

sted, utgiver, år, opplag, sider
2018. Vol. 34, nr 26, s. 7708-7713
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-159118DOI: 10.1021/acs.langmuir.8b01371ISI: 000438008200014PubMedID: 29847140OAI: oai:DiVA.org:su-159118DiVA, id: diva2:1243406
Tilgjengelig fra: 2018-08-31 Laget: 2018-08-31 Sist oppdatert: 2018-08-31bibliografisk kontrollert

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