Solid-phase MINi2MIV的一个综合体。(PO4) 3 compounds(МI ' Li, Na, K;MIV——Ti, Zr, Sn)

O. Petrenko, R. Lavrik, V. Galimova
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引用次数: 0

摘要

双磷酸盐化合物可具有催化、磁性、电物理、非线性光学性质,可用作单晶或多晶、陶瓷等。碱金属和多价金属双磷酸盐的定制合成是深入研究和调查化合物的物理化学性质、组成和结构的基础,可用于开发多用途新材料。化合物MI3MIІMIV(PO4)3, MI2MIIMIV(P2O7)2, MI2MII(PO3)4和МІMІІ4(РО4)33的连续合成(МI - Li, Na, K;МIІ - Mn, Co, Ni;MIV - Zr),由不同的原料通过烧结法制成。毕竟,为这类化合物的合成选择化合物是一项相当困难的任务,往往是不可能的。系统地选择起始试剂、温度制度、组分之间的相互作用时间是可以调整和操作以达到目标的因素。本工作采用固相合成的方法,在“模型”Na2NiZr(P2O7)2的基础上推导出合成方法。以Na2CO3、NiO、CoO、ZrO2、氢铵和磷酸二氢为起始原料进行了合成。化合物的合成是在根据相应反应方案对过程进行初步衍生学研究的基础上进行的。采用物理化学研究方法,对各阶段合成阶段的完成度进行了监测。DTA法证实了固相合成含有几种过渡金属的复合磷酸盐化合物的可能性- MINi2MIV(PO4)3(其中МI - Li, Na, K;MIV - Ti, Zr, Sn)。找到了以不同起始物质为原料合成多种磷酸盐化合物的最佳温度条件。通过x射线衍射、差热分析和红外光谱对合成的化合物进行了表征,并对其进行了完整的化学分析。若干因素对MINi2MIV(PO4)3磷酸化合物生产条件的影响(其中МI - Li, Na, K;MIV - Ti, Zr, Sn)已被发现。可以认为合成化合物的离子电导率为“NASICON”型,因此合成的物质可以作为具有有价值的电物理性质的功能材料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Solid-phase synthesis of MINi2MIV(PO4)3 compounds (МI – Li, Na, K; MIV – Ti, Zr, Sn)
Double phosphates compounds may possess catalytic, magnetic, electrophysical, non-linear optical properties and are used as monocrystals or polycrystals, ceramics etc. The tailor-made synthesis of double phosphates of alkali and multivalent metals is the basis for the in-depth research and investigation of physical and chemical properties, composition and structure of the compounds to be used for the development of new materials for multi-purpose use. Episodic syntheses of compounds MI3MIІMIV(PO4)3, MI2MIIMIV(P2O7)2, MI2MII(PO3)4 and МІMІІ4(РО4)33 (where МI – Li, Na, K; МIІ – Mn, Co, Ni; MIV – Zr), were made from various starting materials by the sintering method. After all, the selection of compounds for the synthesis of compounds of this type is a rather difficult task, often impossible. A systematic approach to the selection of starting reagents, temperature regime, interaction time between components are factors that can be adjusted and operated to achieve the target. The work used the method of solid-phase synthesis, after working out the synthesis method on the “model” Na2NiZr(P2O7)2. The synthesis was carried out starting from Na2CO3, NiO, CoO, ZrO2, ammonium hydro- and dihydrogen phosphate. The synthesis of compounds was carried out based on preliminary derivatographic studies of the passage of processes according to the corresponding reaction schemes. Completeness of synthesis stages was monitored at all stages using physico-chemical research methods. The DTA method confirmed the possibility of solid-phase synthesis of complex phosphate compounds that contain several transition metals – MINi2MIV(PO4)3 (where МI – Li, Na, K; MIV – Ti, Zr, Sn). The optimal temperature conditions for obtaining a number of phosphate compounds based on various starting substances for their synthesis have been found. The synthesized compounds were investigated by X-ray diffraction, DTA and IR spectroscopy, and their complete chemical analysis was carried out. The influence of a number of factors on the conditions of production of phosphate compounds of the MINi2MIV(PO4)3 (where МI – Li, Na, K; MIV – Ti, Zr, Sn) has been found. It can be assumed that the ionic conductivity in the synthesized compounds is of the “NASICON” type, and therefore the synthesized substances can be used as functional materials with valuable electro-physical properties.
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