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

被引：17
作者：
Macedo Neto, Octavio R. [1 ]
Ribeiro, Nielson F. P. [2 ]
Perez, Carlos A. C. [2 ]
Schmal, Martin [2 ]
Souza, Mariana M. V. M. [1 ]
机构：
[1] Univ Fed Rio de Janeiro, Escola Quim, Ctr Tecnol, BR-21941909 Rio De Janeiro, Brazil
[2] NUCAT PEQ COPPE UFRJ, Ctr Technol, BR-21945970 Rio De Janeiro, Brazil
来源：
APPLIED CLAY SCIENCE | 2010年 / 48卷 / 03期
关键词：
Layered double hydroxide; Hydrotalcite-like compounds; Mixed oxides; Coprecipitation; Sonication; TEXTURAL PROPERTIES; PARTIAL OXIDATION; HYDROTALCITE PRECURSORS; CATALYTIC-ACTIVITY; ANIONIC CLAY; MIXED OXIDES; METHANE; ULTRASOUND; CHEMISTRY; HYDROGEN;
D O I：
10.1016/j.clay.2010.02.015
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：542 / 546
页数：5
相关论文
共 25 条
[1]   Ni/Mg/Al anionic clay derived catalysts for the catalytic partial oxidation of methane - Residence time dependence of the reactivity features [J].
Basile, F ;
Basini, L ;
D'Amore, M ;
Fornasari, G ;
Guarinoni, A ;
Matteuzzi, D ;
Del Piero, G ;
Trifiro, F ;
Vaccari, A .
JOURNAL OF CATALYSIS, 1998, 173 (02) :247-256
[2]   A reexamination of hydrotalcite crystal chemistry [J].
Bellotto, M ;
Rebours, B ;
Clause, O ;
Lynch, J ;
Bazin, D ;
Elkaim, E .
JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (20) :8527-8534
[3]   Influence of microwave radiation on the textural properties of layered double hydroxides [J].
Benito, P. ;
LabajoS, F. M. ;
Rocha, J. ;
Rives, V. .
MICROPOROUS AND MESOPOROUS MATERIALS, 2006, 94 (1-3) :148-158
[4]   Microwave effect during aging on the porosity and basic properties of hydrotalcites [J].
Bergada, Olga ;
Vicente, Isabel ;
Salagre, Pilar ;
Cesteros, Yolanda ;
Medina, Francisco ;
Sueiras, Jesus E. .
MICROPOROUS AND MESOPOROUS MATERIALS, 2007, 101 (03) :363-373
[5]   Textural properties of layered double hydroxides: effect of magnesium substitution by copper or iron [J].
Carja, G ;
Nakamura, R ;
Aida, T ;
Niiyama, H .
MICROPOROUS AND MESOPOROUS MATERIALS, 2001, 47 (2-3) :275-284
[6]   Acid-base properties of Mg-Ni-Al mixed oxides using LDH as precursors [J].
Casenave, S ;
Martinez, H ;
Guimon, C ;
Auroux, A ;
Hulea, V ;
Cordoneanu, A ;
Dumitriu, E .
THERMOCHIMICA ACTA, 2001, 379 (1-2) :85-93
[7]   HYDROTALCITE-TYPE ANIONIC CLAYS: PREPARATION, PROPERTIES AND APPLICATIONS [J].
Cavani, F. ;
Trifiro, F. ;
Vaccari, A. .
CATALYSIS TODAY, 1991, 11 (02) :173-301
[8]   Increasing the basicity and catalytic activity of hydrotalcites by different synthesis procedures [J].
Climent, MJ ;
Corma, A ;
Iborra, S ;
Epping, K ;
Velty, A .
JOURNAL OF CATALYSIS, 2004, 225 (02) :316-326
[9]   Hydrogen production by aqueous-phase reforming of ethanol over nickel catalysts prepared from hydrotalcite precursors [J].
Cruz, Ivna O. ;
Ribeiro, Nielson F. P. ;
Aranda, Donato A. G. ;
Souza, Mariana M. V. M. .
CATALYSIS COMMUNICATIONS, 2008, 9 (15) :2606-2611
[10]   Preparation and characterization of Mg-Al hydrotalcite-like compounds containing cerium [J].
Das, J. ;
Das, D. ;
Parida, K. M. .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2006, 301 (02) :569-574
123