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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F14%3A39897861%21RIV15-MSM-25310___
rdf:type
n14:Vysledek skos:Concept
dcterms:description
In this paper, we report results of thermoanalytical investigation on the reaction between ZrOCl2 center dot 8H(2)O and (NH4)(2)HPO4 in molar ratio 1:2. Differential thermal-thermogravimetric and X-ray diffraction analyses were performed in order to reveal the chemical transformations, which took place during heating of the individual compounds ZrOCl2 center dot 8H(2)O, (NH4)(2)HPO4 and the mixture ZrOCl2 center dot 8H(2)O:2(NH4)(2)HPO4. It was shown that the transformations in the mixture below 160 A degrees C were connected with dehydration of ZrOCl2 center dot 8H(2)O and interaction between the components of the mixture, which resulted in the formation of NH4Cl, NH4H2PO4 and a mainly amorphous zirconium phase, most likely t-ZrO2. The zirconium component subsequently reacted with ammonium dihydrophosphate (below 200 A degrees C) or with dehydrated phosphate derivatives (above 200 A degrees C), which in both cases yielded an amorphous product. The interaction between the components of the mixture resulting in the formation of ZrP2O7 was completed by its crystallisation at 610 A degrees C. Our study indicates an alternative low-temperature approach for the synthesis of the technologically important ZrP2O7 material. In this paper, we report results of thermoanalytical investigation on the reaction between ZrOCl2 center dot 8H(2)O and (NH4)(2)HPO4 in molar ratio 1:2. Differential thermal-thermogravimetric and X-ray diffraction analyses were performed in order to reveal the chemical transformations, which took place during heating of the individual compounds ZrOCl2 center dot 8H(2)O, (NH4)(2)HPO4 and the mixture ZrOCl2 center dot 8H(2)O:2(NH4)(2)HPO4. It was shown that the transformations in the mixture below 160 A degrees C were connected with dehydration of ZrOCl2 center dot 8H(2)O and interaction between the components of the mixture, which resulted in the formation of NH4Cl, NH4H2PO4 and a mainly amorphous zirconium phase, most likely t-ZrO2. The zirconium component subsequently reacted with ammonium dihydrophosphate (below 200 A degrees C) or with dehydrated phosphate derivatives (above 200 A degrees C), which in both cases yielded an amorphous product. The interaction between the components of the mixture resulting in the formation of ZrP2O7 was completed by its crystallisation at 610 A degrees C. Our study indicates an alternative low-temperature approach for the synthesis of the technologically important ZrP2O7 material.
dcterms:title
DTA-TG and XRD Study on the Reaction Between ZrOCl2.8H(2)O and (NH4)(2)HPO4 for Synthesis of ZrP2O7 DTA-TG and XRD Study on the Reaction Between ZrOCl2.8H(2)O and (NH4)(2)HPO4 for Synthesis of ZrP2O7
skos:prefLabel
DTA-TG and XRD Study on the Reaction Between ZrOCl2.8H(2)O and (NH4)(2)HPO4 for Synthesis of ZrP2O7 DTA-TG and XRD Study on the Reaction Between ZrOCl2.8H(2)O and (NH4)(2)HPO4 for Synthesis of ZrP2O7
skos:notation
RIV/00216275:25310/14:39897861!RIV15-MSM-25310___
n4:aktivita
n6:P
n4:aktivity
P(EE2.3.30.0021)
n4:cisloPeriodika
2
n4:dodaniDat
n17:2015
n4:domaciTvurceVysledku
Gorodylova, Nataliia Oleksandrivna n19:6868983
n4:druhVysledku
n11:J
n4:duvernostUdaju
n18:S
n4:entitaPredkladatele
n8:predkladatel
n4:idSjednocenehoVysledku
12460
n4:idVysledku
RIV/00216275:25310/14:39897861
n4:jazykVysledku
n13:eng
n4:klicovaSlova
X-ray Diffraction Analysis; Thermal Ynalysis; Zirconium(IV) Pyrophosphate; Diammonium Hydrophosphate; Zirconium(IV) Oxychloride Octahydrate
n4:klicoveSlovo
n5:Diammonium%20Hydrophosphate n5:Thermal%20Ynalysis n5:Zirconium%28IV%29%20Oxychloride%20Octahydrate n5:Zirconium%28IV%29%20Pyrophosphate n5:X-ray%20Diffraction%20Analysis
n4:kodStatuVydavatele
NL - Nizozemsko
n4:kontrolniKodProRIV
[EC896265A4E6]
n4:nazevZdroje
Journal of Thermal Analysis and Calorimetry
n4:obor
n10:CA
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
4
n4:projekt
n7:EE2.3.30.0021
n4:rokUplatneniVysledku
n17:2014
n4:svazekPeriodika
118
n4:tvurceVysledku
Gorodylova, Nataliia Oleksandrivna Filipek, Elzbieta Šulcová, Petra Bosacka, Monika
n4:wos
000344098200061
s:issn
1388-6150
s:numberOfPages
6
n16:doi
10.1007/s10973-014-3890-4
n15:organizacniJednotka
25310