Fourier-transform infrared study of surface species on carbon mixed with KBr and reacted with CO2, O2 and CO
- 1 January 1990
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions
- Vol. 86 (21) , 3647-3652
- https://doi.org/10.1039/ft9908603647
Abstract
Infrared spectra of C/KBr heated in carbon dioxide showed bands due to several types of carbon–oxygen surface species C(O)* which were also formed by heat treatment in oxygen. Oxygen was more efficient than carbon dioxide at generating C(O)* species and formed some surface groups which did not appear for carbon dioxide. The latter groups were reactive with carbon monoxide whereas C(O)* species formed both by oxygen and carbon dioxide did not react with carbon monoxide. Contrasting behaviour of carbon dioxide with C/KBr and C/K2CO3 has been identified. The results are discussed in terms of surface species which may be involved in carbon gasification reactions.Keywords
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