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CO 2 Decomposition by Oxide Ceramics Intercalated in Layered Compound
Author(s) -
Tsuji Masamichi,
Tabata Masahiro,
Tamaura Yutaka
Publication year - 1994
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1994.tb06971.x
Subject(s) - decomposition , magnetite , reactivity (psychology) , oxide , thermal decomposition , iron oxide , phase (matter) , materials science , ceramic , inorganic chemistry , chemistry , chemical engineering , metallurgy , organic chemistry , medicine , alternative medicine , pathology , engineering
Iron oxide polymers intercalated and/or loaded within täniolite have been studied as a CO 2 decomposition medium. Fe 2+ was exchanged for Li + in täniolite, oxidized by air‐bubbling at 60°–70°C. The basic d ‐spacing (13.75 Å in the Li + form) was expanded to give 14.86 Å in the Fe 2+ form. Oxidation by air in the form of suspension gave a 15.3‐Å phase, which was ascribed to formation of magnetite within the interlayer. The interlayer distance of the intercalated phase remained the same upon heating at 300°C. The magnetite–intercalated täniolite was heated to activate in a H 2 and/or H 2 O steam. CO 2 decomposition reactivity at 300°C has been evidenced by evolution of CO gas. The high reactivity for CO 2 decomposition is ascribed to the highly dispersed iron oxide ceramics within the interlayer of täniolite Li[(Mg 2 Li)(Si 4 O 10 )]F 2 n H 2 O.