Structural aspects related to the ion exchange process in layered niobate K4Nb6O17

[摘要] The niobate with formula K4Nb6O17 has a layered structure formed by stacked negative sheets and exchangeable cations in the interlayer region. In this study we discuss some structural aspects related to the ion exchange in layered hexaniobate based on X-ray diffractometry and vibrational Raman spectroscopy data. Hexaniobate has two distinct interlayer regions and the potassium ions of one interlayer in particular are preferably exchanged by other cations, leading to an interstratified material.

[学科分类] 化学（综合）

[关键词] K4Nb6O17;ion exchange;intercalation.