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AuthorShah, Parag R.
AuthorKhader, Mahmoud M.
AuthorVohs, John M.
AuthorGorte, Raymond J.
Available date2024-06-05T06:52:30Z
Publication Date2015-03-12
Publication NameJournal of Physical Chemistry C
Identifierhttp://dx.doi.org/10.1021/jp710516d
CitationAl-Marri, M. J., Khader, M. M., Tawfik, M., Qi, G., & Giannelis, E. P. (2015). CO2 sorption kinetics of scaled-up polyethylenimine-functionalized mesoporous silica sorbent. Langmuir, 31(12), 3569-3576.
ISSN0743-7463
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=39849106904&origin=inward
URIhttp://hdl.handle.net/10576/55831
AbstractThe thermodynamics of oxidation and reduction were investigated for a series of vanadium-containing oxides, including CeVO4, LaVO 4, ZrV2O7, Mg3(VO4) 2, CrVO4, AlVO4, and V2O 5, in the temperature range between 873 and 973 K, using coulometric titration to measure oxidation isotherms. For each of the compounds, the oxygen uptakes corresponded to oxidation from V+3 to V+5 as oxygen fugacities increased from 10-25 to 10-2 atm. With V2O5 and ZrV2O7, the only materials in this group that contain V-O-V linkages, there was evidence for two oxidation processes, corresponding to V+3- V+4 and V+4- V+5 equilibria, whereas oxidation occurred in a single step for the other materials. CrVO4 and AlVO4 were unstable to deep reduction, but oxidation enthalpies and entropies were reported for CeVO 4, ZrV2O7, Mg3(VO4) 2, and V2O5. © 2008 American Chemical Society.
SponsorThis paper was made possible by an NPRP Grant #5-1437-1-243 from the Qatar National Research Fund (a member of Qatar Foundation) and generous research computing support from Cornell University.
Languageen
PublisherAmerican Chemical Society (ACS)
SubjectSorbents
Carbon dioxide
TitleA comparison of the redox properties of vanadia-based mixed oxides
TypeArticle
Pagination3569-3576
Issue Number7
Volume Number112
ESSN1520-5827
dc.accessType Full Text


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