Synthesis, Crystal Structure and Thermal Decomposition of [HGdP2O7•2 H2O]•NH3 Electric properties of HGdP2O7 and Gd2P4O13

被引：1

作者：

Zrelli-Annabi, R. ^{[1
]}

Chehimi-Moumen, F. ^{[1
]}

Moutaabbid, H. ^{[2
]}

Kurakevych, O. ^{[2
]}

Le Godec, Y. ^{[2
]}

Hassen-Chehimi, D. Ben ^{[1
]}

Trabelsi-Ayadi, M. ^{[1
]}

机构：

[1] Univ Carthage, Fac Sci Bizerte, Lab Applicat Chim Ressources & Subst Nat Environm, Zarzouna 7021, Bizerte, Tunisia

[2] Sorbonne Univ, Inst Mineral Phys Mat & Cosmochim, IRD, MNHN,CNRS,UMR 7590, 4 Pl Jussieu, F-75252 Paris 5, France

来源：

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS | 2019年 / 194卷 / 1-2期

关键词：

chemical synthesis; crystal structure; controlled rate thermal analysis; diphosphate; impedance spectroscopy; X-Ray diffraction; TEMPERATURE PROTONIC CONDUCTION; DIPHOSPHATE; ACID; PHOSPHATES; BEHAVIOR; SPECTRA; ADDUCT;

D O I：

10.1080/10426507.2017.1415898

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new gadolinium diphosphate [HGdP2O7 2 H2O] NH3 was synthesized via a soft chemistry route from evaporation of aqueous solution. It crystallizes in the space group P with Z = 2 and the following unit cell dimensions: a = 6.4609(2), b = 6.9810(2), c = 9.813(4) , = 81.345(3), = 80.547(3), = 88.430(3)degrees. IR spectroscopy confirmed the presence of P-OH group, and both ammonia and water molecule in the studied material.The thermal decomposition of [HGdP2O7 2 H2O] NH3, as investigated by Controlled Rate Thermal Analysis, took place in three stages between -23 and 600 degrees C leading to the anhydrous salt HGdP2O7. The calcination of the synthesized product at 850 degrees C in a static air furnace allowed us to obtain the tetraphosphate Gd2P4O13. X-ray powder diffraction and infrared spectroscopy were used to identify these materials.The electrical properties of HGdP2O7 and Gd2P4O13 were investigated through impedance complex analysis. Modest conductivity has been observed in both materials at relatively medium temperature range. Activation energies of 0.62 and 1.21eV, were deduced from the Arrhenius plots for HGdP2O7 and Gd2P4O13, respectively.

引用

页码：5 / 12

页数：8

共 35 条

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