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JOURNALS // Nanosystems: Physics, Chemistry, Mathematics // Archive

Nanosystems: Physics, Chemistry, Mathematics, 2023 Volume 14, Issue 1, Pages 112–119 (Mi nano1169)

This article is cited in 2 papers

CHEMISTRY AND MATERIAL SCIENCE

Synthesis and thermal behavior of KCe$_2$(PO$_4$)$_3$, a new full-member in the A$^{\mathrm{I}}$M$^{\mathrm{IV}}_2$(PO$_4$)$_3$ family

Taisiya O. Kozlovaa, Darya N. Vasilyevaab, Daniil A. Kozlovac, Mariia A. Teplonogovaac, Alexander Y. Baranchikova, Nikolay P. Simonenkoa, Vladimir K. Ivanova

a Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
b National Research University Higher School of Economics, Moscow, Russia
c Lomonosov Moscow State University, Moscow, Russia

Abstract: Hydrothermal treatment of nanoscale amorphous ceric phosphate gel in KOH aqueous solutions was found to result in a new KCe$_2$(PO$_4$)$_3$ phase. The refinement of the KCe$_2$(PO$_4$)$_3$ structure showed that it was isostructural to recently reported (NH$_4$)Ce$_2$(PO$_4$)$_3$. For the KCe$_2$(PO$_4$)$_3$ phase, the unit cell parameters (sp. gr. $C2/c$) were $a$ = 17.3781(3)$\mathring{\mathrm{A}}$, $b$ = 6.7287(1)$\mathring{\mathrm{A}}$, $c$ = 7.9711(2)$\mathring{\mathrm{A}}$, $\beta$= 102.351(1)$^\circ$, $V$ = 910.53(4)$\mathring{\mathrm{A}}^3$, $Z$ = 4. The thermal decomposition of KCe$_2$(PO$_4$)$_3$ at 800$^\circ$C resulted in the mixture of crystalline CePO$_4$ and KPO$_3$.

Keywords: cerium, potassium, polyphosphate, channel, hydrothermal.

Received: 28.11.2022
Revised: 27.12.2022
Accepted: 28.12.2022

Language: English

DOI: 10.17586/2220-8054-2023-14-1-112-119



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© Steklov Math. Inst. of RAS, 2024