Investigation of solid solution of ZrP2O7–Sr2P2O7

Seyyidoğlu, Semih; Özenbaş, Macit; Yazici, N.; Yılmaz, Ali Özgür

doi:10.1007/s10853-006-0673-8

Cited by 27 publications

(16 citation statements)

References 29 publications

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“…7)9) Because of its potential applications as a catalyst, a catalyst support, a host material for luminescence, a dielectric material and so on, 10) 15) the synthesis for each purpose is of practical importance. Conventionally, ZrP 2 O 7 has been synthesized by reacting ZrCl 4 with (NH 4 ) 2 HPO 4 at 900°C, 6) ZrO 2 and H 3 PO 4 at 1000°C, 16) and/or ZrOCl 2 and H 3 PO 4 at 1000°C for 12 h. 17) However, these hightemperature solid-state reactions require longer times and cause possible undesired products due to volatilization of phosphorus. To overcome these problems, Parhi et al 18) recently studied the synthesis by solid-state metathesis under microwave irradiation.…”

Section: )6)mentioning

confidence: 99%

Synthesis of ZrP2O7 by hydrothermal reaction and post-calcination

Samed

Zhang

Hinokuma

et al. 2011

J. Ceram. Soc. Japan

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A new method of synthesis of single phase ZrP 2 O 7 was studied using hydrothermal reaction of amorphous ZrO(OH) 2 with H 3 PO 4 and subsequent air calcination. The reaction steps to ZrP 2 O 7 were analyzed by means of XRD, TG/DTA and FT-IR. The hydrothermal reaction at 200°C for 18 h yielded well-crystallized tetraphosphate, Zr 3 (PO 4 ) 4 , loaded with unreacted H 3 PO 4 . Upon heating above 500°C, the mixture caused the stoichiometric reaction to form ZrP 2 O 7 , but impurities such as ZrO 2 and Zr 2 P 2 O 9 were not formed. TEM observation confirmed that ZrP 2 O 7 after calcination at 900°C consisted of crystallites in size of several ten nanometers.

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Section: )6)mentioning

confidence: 99%

Synthesis of ZrP2O7 by hydrothermal reaction and post-calcination

Samed

Zhang

Hinokuma

et al. 2011

J. Ceram. Soc. Japan

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“…For the synthesis we have used the most basic and simple method of preparation of inorganic ceramics -solid state reaction. However, according to the literature data, formation of the ZrP 2 O 7 materials via solid state reaction conventionally requires temperatures above 900 • C with prolonged calcination [39][40][41]. The temperature can be reduced by application of a highly reactive zirconium precursor, such as, for example, tetragonal modification of ZrO 2 .…”

Section: Investigation Of Zr 1−x Cu X P 2 O 7−x (Model I) and Zr 1-x mentioning

confidence: 99%

“…Some years later, the structure of ZrP 2 O 7 attracted attention of several researches as a basis for the development of luminophore materials; activation of ZrP 2 O 7 by different elements, such as Tb 3+ , Eu 3+ , Eu 2+ , Nb 5+ and Cu 1+ , became a subject of the intense study [4][5][6]. Later, interesting results on thermoluminescent properties of ZrP 2 O 7 -Sr 2 P 2 O 7 solid solutions were reported as well [13]. The investigated molar rates in this research did not exceed 10% of each phase and the formation of the solid solutions was observed only on basis of the ZrP 2 O 7 structure, which, in result, were considered as potential thermoluminescent materials.…”

Section: Introductionmentioning

confidence: 99%

Heterovalent Zr4+-Cu2+ substitution in zirconium pyrophosphate: From theoretical models to synthesis and utilization

Gorodylova

Šulcová

Bosacka

et al. 2015

Journal of the European Ceramic Society

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“…Conventionally, ZrP 2 O 7 ceramic was synthesised by high temperature solid state reaction using ZrCl 4 and (NH 4 ) 2 HPO 4 at 900°C [11], ZrO 2 or ZrOCl 2 and H 3 PO 4 at 1,000°C [12,13]. In order to decrease the calcination temperature, several alternative methods have been developed as well.…”

Section: Introductionmentioning

confidence: 99%

DTA-TG and XRD study on the reaction between ZrOCl2·8H2O and (NH4)2HPO4 for synthesis of ZrP2O7

Gorodylova

Šulcová

Bosacka

et al. 2014

J Therm Anal Calorim

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In this paper, we report results of thermoanalytical investigation on the reaction between ZrOCl 2 Á8H 2 O and (NH 4 ) 2 HPO 4 in molar ratio 1:2. Differential thermalthermogravimetric and X-ray diffraction analyses were performed in order to reveal the chemical transformations, which took place during heating of the individual compounds ZrOCl 2 Á8H 2 O, (NH 4 ) 2 HPO 4 and the mixture ZrOCl 2 Á8H 2 O:2(NH 4 ) 2 HPO 4 . It was shown that the transformations in the mixture below 160°C were connected with dehydration of ZrOCl 2 Á8H 2 O and interaction between the components of the mixture, which resulted in the formation of NH 4 Cl, NH 4 H 2 PO 4 and a mainly amorphous zirconium phase, most likely t-ZrO 2 . The zirconium component subsequently reacted with ammonium dihydrophosphate (below 200°C) or with dehydrated phosphate derivatives (above 200°C), which in both cases yielded an amorphous product. The interaction between the components of the mixture resulting in the formation of ZrP 2 O 7 was completed by its crystallisation at 610°C. Our study indicates an alternative low-temperature approach for the synthesis of the technologically important ZrP 2 O 7 material.

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Investigation of solid solution of ZrP2O7–Sr2P2O7

Cited by 27 publications

References 29 publications

Synthesis of ZrP2O7 by hydrothermal reaction and post-calcination

Synthesis of ZrP2O7 by hydrothermal reaction and post-calcination

Heterovalent Zr4+-Cu2+ substitution in zirconium pyrophosphate: From theoretical models to synthesis and utilization

DTA-TG and XRD study on the reaction between ZrOCl2·8H2O and (NH4)2HPO4 for synthesis of ZrP2O7

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