Synthesis of High-Surface-Area Vomplex Zirconium Phosphates via Mechanochemical Activation Route | Sciact - CRIS-system of Boreskov Institute of Catalysis

Synthesis of High-Surface-Area Vomplex Zirconium Phosphates via Mechanochemical Activation Route Full article

Journal

Materials Research Innovations
ISSN: 1432-8917 , E-ISSN: 1433-075X

Output data

Year: 1999, Volume: 2, Number: 6, Pages: 328-337 Pages count : 10 DOI: 10.1007/s100190050109

Tags

Framework complex zirconium phosphates, Hydrothermal synthesis, Mechanochemical activation, Metastable cubic phase

Authors

Sadykov Vladislav A. ^1,2 , Pavlova Svetlana N. ^1,2 , Zabolotnaya Galina V. ^1,2 , Maximovskaya Raisa I. ^1,2 , Tsybulya Sergei V. ^1,2 , Burgina Elena B. ^1,2 , Zaikovskii Vladimir I. ^1,2 , Litvak Galina S. ^1,2 , Chaikina Marina V. ³ , Lunin Valerii V. ⁴ , Kuznetsova Natalya N. ⁴ , Roy Rustum ⁵ , Agrawal Dinesh K. ⁵

Affiliations

1	The Boreskov Institute of Catalysis SB RAS, Novosibirsk 630090, Lavrentieva 5, Russia
2	Novosibirsk State University
3	Institute Of Solid State Chemistry and Mechanochemistry SB RAS, Novosibirsk 630128, Kutateladze 18, Russia
4	Lomonosov State University, Chemical Department, Moscow 119899, Vorobyevy Gory, Russia
5	Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802, USA

Funding (1)

The Ministry of Education and Science of the Russian Federation

3514

High-power ball mill activation of the mixture of hydrated zirconium and lanthanum salts (oxonitrates, oxochlorides) with ammonium phosphate followed by hydrothermal treatment at temperatures not exceeding 200°C and a nearly neutral pH was found to yield crystalline dispersed phase of a cubic NH4Zr2(PO4)3 type along with admixtures of disordered orthorhombic compounds of a zirconium orthophosphate type. In the same conditions and at the same Zr/P ratio, hydrothermal treatment of gels obtained by reacting mixed zirconium and lanthanum nitrates solutions with ammonium phosphates yields no crystalline products, and only treatment in acid media generates a phase of the α-ZrPO4(OH) type coexisting with the NH4Zr2(PO4)3 phase if polyethylene oxide is present. X-ray powder diffraction, transmission electron microscopy, 31MAS-NMR, FTIRS and thermal analysis were applied to elucidate factors affecting crystallization of complex zirconium phosphates in the hydrothermal conditions. The most essential factor appears to be generation of some nuclei of zirconium phosphates under high pressures developed in the course of mixed solids mechanical activation. These nuclei are embedded into matrix of such well-crystallized solid products as ammonium nitrate or chloride. Hence, metastable cubic or orthorhombic structure of the phases obtained via mechanical activation route can be assigned to the nuclei-matrix orientation relationship. Due to easily scaled-up synthesis procedure, these results appear to be very promising for manufacturing of dispersed framework zirconium phosphates as acid catalysts or fast proton conductors.

Sadykov V.A. , Pavlova S.N. , Zabolotnaya G.V. , Maximovskaya R.I. , Tsybulya S.V. , Burgina E.B. , Zaikovskii V.I. , Litvak G.S. , Chaikina M.V. , Lunin V.V. , Kuznetsova N.N. , Roy R. , Agrawal D.K.
Synthesis of High-Surface-Area Vomplex Zirconium Phosphates via Mechanochemical Activation Route
Materials Research Innovations. 1999. V.2. N6. P.328-337. DOI: 10.1007/s100190050109 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Nov 18, 1998
Accepted:	Dec 2, 1998
Published print:	Apr 28, 1999
Published online:	Oct 13, 2016

Web of science:	WOS:000080316800006
Scopus:	2-s2.0-0000378350
Elibrary:	13325473
Chemical Abstracts:	1999:327952
Chemical Abstracts (print):	131:60681
OpenAlex:	W2032113408

DB	Citing
Web of science	9
Scopus	10
Elibrary	12
OpenAlex	9