Synthesis and characterization of metal mixed oxides from Layered Double Hydroxides

被引：21

作者：

Balsamo, N. ^{[1
]}

Mendieta, S. ^{[1
]}

Oliva, M. ^{[2
,3
]}

Eimer, G. ^{[1
,4
]}

Crivello, M. ^{[1
]}

机构：

[1] Univ Tecnol Nacl, Ctr Invest & Tecnol Quim, CITeQ UTN, Fac Reg Cordoba Maestro Lopez & Cruz Roja Argenti, RA-5016 Cordoba, Argentina

[2] Univ Nacl Cordoba, FAMAF, RA-5016 Cordoba, Argentina

[3] Univ Nacl Cordoba, Inst Fis Enrique Gaviola CONICET, RA-5016 Cordoba, Argentina

[4] Consejo Nacl Invest Cient & Tecn, Cordoba, Argentina

来源：

11TH INTERNATIONAL CONGRESS ON METALLURGY & MATERIALS SAM/CONAMET 2011 | 2012年 / 1卷

关键词：

Layered double hydroxides; Metal mixed oxides; Co-precipitation method; Wet impregnation method; CATALYSTS; AL; NANOPARTICLES; HYDROTALCITES; CLAYS;

D O I：

10.1016/j.mspro.2012.06.068

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work reports the synthesis and characterization of metal mixed oxides (MMOxs) obtained from precursors like Layered Double Hydroxides (LDHs). These materials were synthesized with two hydroxides of Mg-Al with the incorporation of mono, di and trivalent metal ions, such as Li, K, Ca, Ba, Ce, and La. The third metal incorporation took place through two different ways: the direct incorporation by the co-precipitation method and the incorporation through the impregnation of the mixed oxides by the wet impregnation method. All materials were characterized by XRD, SEM-EDX and specific surface area. The samples synthesized by both methods show the characteristic structure from the LDHs compounds derived and the third metal incorporated. However MMOxs obtained by co-precipitation method showed higher specific surface area and smaller particle size. (C) 2012 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of SAM/CONAMET 2011, Rosario, Argentina.

引用

页码：506 / 513

页数：8

共 20 条

[1] MgM (M = Al and Ca) oxides as basic catalysts in transesterification processes [J].