Characterization of tobelite formed from kaolinite under hydrothermal conditions (200 °C)
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- 作者：Marí ; a Bentabol ; bentabol@uma.es" class="auth_mail" title="E-mail the corresponding author ; Marí ; a Dolores Ruiz Cruz
- 关键词：Ammonium ; Hydrothermal synthesis ; Tobelite ; IR spectroscopy ; Raman spectroscopy ; Transmission electron microscopy ; X-ray diffraction
- 刊名：Applied Clay Science
- 出版年：2016
- 出版时间：June 2016
- 年：2016
- 卷：126
- 期：Complete
- 页码：160-172
- 全文大小：1762 K
文摘
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Tobelite has been synthesized for the first time at 200°C and 15 MPa.
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Tobelite has been characterized by XRD, DTA-TG, TEM, FTIR and Raman spectroscopy.
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The cell parameters are: a = 5.219 Å; b = 9.021 Å; c = 10.556 Å; β = 101.41°.
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Tobelite shows a bimodal size distribution (400x60 and 2000x200 Å).
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The FTIR spectra show two close N-H ν4 bands.
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The DTA-TG indicates two different mechanisms of NH4 loss.