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Perspectives on the adsorption of CO2 on amine-modified silica studied by infrared spectroscopy
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för material- och miljökemi (MMK).ORCID-id: 0000-0002-7284-2974
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för material- och miljökemi (MMK).
Rekke forfattare: 22019 (engelsk)Inngår i: Current opinion in green and sustainable chemistry, ISSN 2452-2236, Vol. 16, s. 13-19Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Amine-modified adsorbents are being researched for their potential to capture CO2 from various gas mixtures, and we review how IR spectroscopy has been used to study the associated CO2-amine chemistry. It has been used to reveal that CO2 chemisorbs as ammonium-carbamate ion pairs especially when the amine density is high. Carbamic acid and related other moieties tend to form in parallel to the ion pairs when the amine density is low. The amines have been shown to degrade on cyclic heat treatment. To further study the formation of bicarbonates on reactive adsorption of CO2 and H2O, degradation of the organics, and the use of other supports than silica are suggested.

sted, utgiver, år, opplag, sider
2019. Vol. 16, s. 13-19
Emneord [en]
Green & Sustainable Science & Technology
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-169295DOI: 10.1016/j.cogsc.2018.11.010ISI: 000465022900004OAI: oai:DiVA.org:su-169295DiVA, id: diva2:1320552
Tilgjengelig fra: 2019-06-05 Laget: 2019-06-05 Sist oppdatert: 2019-12-17bibliografisk kontrollert

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