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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Synthesis of new compounds involving layered titanates and niobates with copper(II)
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Synthesis of new compounds involving layered titanates and niobates with copper(II)

机译：含铜的层状钛酸酯和铌酸酯的新化合物的合成

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摘要

A series of titanates and niobates, K_2Ti_4O_9, Na_2Ti_3O_7, KNb_3O_8, K_4Nb_6O_(17), and their respective acid forms were prepared and characterized by X-ray diffraction, thermogravimetry and scanning electron microscopy. The ion exchange capacity of the alkaline and acid forms towards Cu(II) was studied and it is concluded that, as general behavior, the alkaline titanates and niobates have a higher ion exchange capacity towards copper cations than their respective acid forms. Furthermore, the sodium matrix Na_2Ti_3O_7 exhibits the highest ion exchange capacity of 3.00 mmol g~(-1). Based on the thermogravimetric results, the Cu(II) cation is coordinated to two water molecules when adsorbed on the titanate and niobate matrices.
机译：制备了一系列钛酸盐和铌酸盐，K_2Ti_4O_9，Na_2Ti_3O_7，KNb_3O_8，K_4Nb_6O_（17），并通过X射线衍射，热重分析和扫描电子显微镜对它们各自的酸形式进行了表征。研究了碱和酸形式对Cu（II）的离子交换能力，并得出结论，作为一般行为，碱式钛酸盐和铌酸盐对铜阳离子的离子交换能力高于其各自的酸形式。此外，钠基Na_2Ti_3O_7具有最高的3.00 mmol g〜（-1）离子交换能力。根据热重分析结果，当吸附在钛酸酯和铌酸酯基体上时，Cu（II）阳离子与两个水分子配位。

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