Incorporation of cerium ions by sonication in Ni–Mg–Al layered double hydroxides

Autor:	Octávio R. Macedo Neto, Martin Schmal, Mariana M.V.M. Souza, Nielson F.P. Ribeiro, Carlos A.C. Perez
Rok vydání:	2010
Předmět:	Materials science Hydrotalcite Coprecipitation Rietveld refinement Sonication Inorganic chemistry Layered double hydroxides chemistry.chemical_element Geology engineering.material law.invention Cerium chemistry Geochemistry and Petrology law Specific surface area engineering Calcination
Zdroj:	Applied Clay Science. 48:542-546
ISSN:	0169-1317
DOI:	10.1016/j.clay.2010.02.015
Popis:	The incorporation of Ce in Ni–Mg–Al layered double hydroxides (LDHs) was studied by coprecipitation and under sonication. Mixed oxides were obtained by calcination. X-ray diffraction (XRD) patterns of the as-synthesized samples showed formation of well-crystallized LDHs and CeO2. Rietveld refinement was employed to calculate the content of cerium that was incorporated in the LDH structure. Sonication increased the incorporation of Ce in the structure. The specific surface areas of cerium-containing LDHs prepared by the conventional method were similar to that of free-Ce sample. Synthesis under sonication significantly increased the specific surface area. After calcination both specific surface areas and pore volumes increased compared to the corresponding LDH.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::abf12f6dcc7caeca533c231bb1cad044 https://doi.org/10.1016/j.clay.2010.02.015 Zobrazit plný text záznamu Full Text from ScienceDirect