Abstract: Three types of the leached fiber glass materials of silicate origin modified with Zr, Al and rare earth metals (REM) were nitridated with ammonia at temperatures ranging from 673 to 973 K. DRIFTS (Diffuse Reflectance Infrared Fourier-Transform Spectroscopy) and H/D exchange using ND3 were applied for characterization of the formed NHx species. Along with nitridation of silanol groups their dehydroxilation as well as hydrolysis of NHx species take place. In situ DRIFTS study showed that the limiting steps are slow chemical reactions, but not a diffusion of NH3 or H2O molecules in the bulk of glasses. The concept on strained siloxane bridges formed due to dehydroxylation of two adjacent silanol groups was used for explanation of the reaction kinetics features.

Cite: Gulyaeva Y.K. , Suknev A.P. , Paukshtis N.A. , Balʹzhinimaev B.S.
Gas Phase Nitridation of Silicate Fiber Glass Materials with Ammonia: Three Case Studies
Journal of Non-Crystalline Solids. 2011. V.357. N18. P.3338-3344. DOI: 10.1016/j.jnoncrysol.2011.05.032 WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	Mar 17, 2011
Accepted:	May 20, 2011
Published online:	Jun 25, 2011
Published print:	Sep 1, 2011

Identifiers:

Web of science:	WOS:000294593000008
Scopus:	2-s2.0-79960930296
Elibrary:	16988486
Chemical Abstracts:	2011:963297
Chemical Abstracts (print):	155:365247
OpenAlex:	W2146061230

Citing:

DB	Citing
Web of science	8
Scopus	8
Elibrary	10
OpenAlex	9

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