Al-Doped Apatite-Type Nanocrystalline Lanthanum Silicates Prepared by Mechanochemical Synthesis: Phase, Structural and Microstructural Study | Sciact - CRIS-system of Boreskov Institute of Catalysis

Al-Doped Apatite-Type Nanocrystalline Lanthanum Silicates Prepared by Mechanochemical Synthesis: Phase, Structural and Microstructural Study Full article

Conference

2007 E-MRS Fall Meeting. Symposium - Chemistry and Processes for the Design of Metal Oxide Nanoparticles
17-21 Sep 2007 , Warsaw

Journal

European Journal of Inorganic Chemistry
ISSN: 1434-1948 , E-ISSN: 1099-0682

Output data

Year: 2008, Number: 6, Pages: 939-947 Pages count : 9 DOI: 10.1002/ejic.200700972

Tags

Apatite-type silicates, Conducting materials, Doping, Formation mechanism, Mechanochemical synthesis

Authors

Kharlamova Tamara ¹ , Pavlova Svetlana ¹ , Sadykov Vladislav ¹ , Chaikina Marina ² , Krieger Tamara ¹ , Lapina Olga ¹ , Khabibulin Dzhalil ¹ , Ishchenko Arcady ¹ , Zaikovskii Vladimir ¹ , Argirusis Christos ³ , Frade Jorge ⁴

Affiliations

1	Boreskov Institute of Catalysis SB RAS, pr. Lavrentieva, 5, 630090 Novosibirsk, Russia
2	Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutatetadze Street, 18, 630128 Novosibirsk, Russia
3	Clausthal University of Technology, 38678 Clausthal-Zellerfeld, Germany
4	University of Aveiro, 3810-193 Aveiro, Portugal

Funding (1)

European Commission

33410 FP6-2004-NMP-TI-4 STREP MATSILC

Al-doped La9.33+x/3+ySi6–xAlxO26+3y/2 (x = 0–1.5, y = 0–0.67) apatite-type lanthanum silicates (ATLS) were synthesized with a high-power (1200 rpm) planetary ball mill that allows the formation of the lanthanum silicate phase after milling for 20–35 min at room temperature. The apatite phase already appears after milling for 5 min. Phase, structural and microstructural studies on the nanocrystalline lanthanum silicates were carried out by using XRD, TEM, and IR, 27Al and 29Si MAS NMR spectroscopy to clarify the mechanism of ATLS formation. The cluster-topotactic mechanism of the formation of apatite by mechanochemical treatment involving hydration of the starting compounds and acid–base reactions is suggested. Al-doping results in promoting the formation of apatite. However, a secondary LaAlO3 phase may be present in the sample depending on its stoichiometry. This suggests the existence of a biphase domain in the La2O3–SiO2–Al2O3 phase diagram at room temperature, in which Al-doped apatite and LaAlO3 phases coexist.

Kharlamova T. , Pavlova S. , Sadykov V. , Chaikina M. , Krieger T. , Lapina O. , Khabibulin D. , Ishchenko A. , Zaikovskii V. , Argirusis C. , Frade J.
Al-Doped Apatite-Type Nanocrystalline Lanthanum Silicates Prepared by Mechanochemical Synthesis: Phase, Structural and Microstructural Study
European Journal of Inorganic Chemistry. 2008. N6. P.939-947. DOI: 10.1002/ejic.200700972 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Sep 14, 2007
Published online:	Jan 10, 2008
Published print:	Feb 1, 2008

Web of science:	WOS:000254593900018
Scopus:	2-s2.0-48349097682
Elibrary:	13589454
Chemical Abstracts:	2008:510406
Chemical Abstracts (print):	151:20827
OpenAlex:	W2110987907

DB	Citing
Web of science	21
Scopus	23
Elibrary	24
OpenAlex	19