Thermal characteristics of a synthetic hydrotalcite-like material

Autor:	William Jones, Vesna Markovic, Snezana Salipurovic, Winnie Kagunya, Lidija Pesic, Dusan R. Vucelic
Rok vydání:	1992
Předmět:	chemistry.chemical_compound Hydrotalcite Chemistry Thermal transition Bicarbonate Thermal Inorganic chemistry Materials Chemistry Carbonate General Chemistry Crystal structure Ion
Zdroj:	Journal of Materials Chemistry. 2:1069
ISSN:	1364-5501 0959-9428
DOI:	10.1039/jm9920201069
Popis:	The thermal and structural characteristics of a synthetic hydrotalcite-like material are described. Weight losses at 68 and 218 °C are observed, which are attributed to the loss of physisorbed and intercalated water, respectively. The loss of the intercalated water is accompanied by a decrease in the (003) repeat distance from 7.59 to 6.60 A. A broad thermal transition is reported between 270 and 420 °C which results from dehydroxylation of the lattice and decomposition of the charge-balancing carbonate anion. During this decomposition, water and CO2are evolved simultaneously. The changes in crystal structure of the material which accompany these losses are described. Chemical analysis suggests that both carbonate and bicarbonate species are present within the interlayer region.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2309e0bb716aac589e1c65aba8507cdd https://doi.org/10.1039/jm9920201069 Zobrazit plný text záznamu