A New Approach to Lanthanum Silicates with Apatite Structure Synthesis Using β-Cyclodextrin | Sciact - CRIS-system of Boreskov Institute of Catalysis

A New Approach to Lanthanum Silicates with Apatite Structure Synthesis Using β-Cyclodextrin Full article

Journal

Colloids and Surfaces A: Physicochemical and Engineering Aspects
ISSN: 0927-7757

Output data

Year: 2025, Volume: 708, Article number : 135979, Pages count : 11 DOI: 10.1016/j.colsurfa.2024.135979

Tags

lanthanum silicates; iron doping; sol-gel method; cyclodextrin; isotopic exchange; ethanol steam reforming

Authors

Lopatin M.Yu. ¹ , Sadovskaya E.M. ² , Ksenz A.S. ¹ , Vorobyova A.A. ^1,3 , Boltalin A.I. ¹ , Knotko A.V. ^1,4 , Sorokina N.M. ¹ , Shatalova T.B. ^1,4 , Petukhov D.I. ^1,4 , Fedorova Yu.E. ² , Eremeev N.F. ² , Sadykov V.A. ^2,5 , Morozov I.V. ¹ , Fedorova A.A. ¹

Affiliations

1	Department of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
2	Federal Research Center Boreskov Institute of Catalysis SB RAS, Novosibirsk, 630090, Russia
3	HSE University, Moscow, 109028, Russia
4	Faculty of Materials Science, Lomonosov Moscow State University, Moscow, 119991, Russia
5	Novosibirsk State University, Novosibirsk, 630090, Russia

Funding (1)

Ministry of Science and Higher Education of the Russian Federation

FWUR-2024-0033

Apatite-type lanthanum silicates attract the attention of scientists due to their high oxygen mobility and, therefore, the opportunity for different applications. The samples of undoped and iron-doped lanthanum silicates with apatite structure were obtained by the modified sol-gel method using β-cyclodextrin as a template. The precursor decomposition was investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) methods with mass-spectrometry registration of evolved gaseous products. Obtained lanthanum silicates were studied by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX) and low-temperature nitrogen adsorption (BET and BJH). Oxygen mobility in samples was examined with a temperature-programmed isotopic exchange using 18O2 and C18O2, which complement each other. The catalytic activity of samples with supported nickel was investigated in the ethanol steam reforming reaction. It was shown that the described synthesis method allows obtaining lanthanum silicates at relatively low temperatures. Synthesized samples have a high oxygen mobility, which increases with iron doping. Also, it was shown that catalyst based on iron-doped lanthanum silicate possesses higher oxygen mobility and catalytic activity than catalysts based on undoped apatites.

Lopatin M.Y. , Sadovskaya E.M. , Ksenz A.S. , Vorobyova A.A. , Boltalin A.I. , Knotko A.V. , Sorokina N.M. , Shatalova T.B. , Petukhov D.I. , Fedorova Y.E. , Eremeev N.F. , Sadykov V.A. , Morozov I.V. , Fedorova A.A.
A New Approach to Lanthanum Silicates with Apatite Structure Synthesis Using β-Cyclodextrin
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2025. V.708. 135979 :1-11. DOI: 10.1016/j.colsurfa.2024.135979 WOS Scopus OpenAlex

Submitted:	Oct 16, 2024
Accepted:	Dec 12, 2024
Published online:	Dec 12, 2024
Published print:	Mar 5, 2025

Web of science:	WOS:001391068200001
Scopus:	2-s2.0-85212202215
OpenAlex:	W4405311709

Пока нет цитирований