Al-Doped Apatite-Type Nanocrystalline Lanthanum Silicates Prepared by Mechanochemical Synthesis: Phase, Structural and Microstructural Study | Sciact - CRIS-система Института катализа

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

Конференция

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

Журнал

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

Вых. Данные

Год: 2008, Номер: 6, Страницы: 939-947 Страниц : 9 DOI: 10.1002/ejic.200700972

Ключевые слова

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

Авторы

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

Организации

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

Информация о финансировании (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 CAPlusCA OpenAlex

Поступила в редакцию:	14 сент. 2007 г.
Опубликована online:	10 янв. 2008 г.
Опубликована в печати:	1 февр. 2008 г.

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

БД	Цитирований
Web of science	21
Scopus	23
РИНЦ	24
OpenAlex	19