Hydrothermal synthesis of Mn-kaolinite using NaOH or KOH and characterization

Moaaz K. Seliem; S. Komarneni; M. Park; H. Katsuki; M. G. Shahien; A. A. Khalil; I. M. Abd El-Gaid

doi:10.1016/j.clay.2010.04.006

Hydrothermal synthesis of Mn-kaolinite using NaOH or KOH and characterization

Moaaz K. Seliem, S. Komarneni, M. Park, H. Katsuki, M. G. Shahien, A. A. Khalil, I. M. Abd El-Gaid

School of Applied Bioscience

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Mn-kaolinite containing both Mn and Al in the octahedral sheetwas prepared under hydrothermal conditions of 100-200 °C for 6-96 h by using Al-nitrate, Mn-carbonate, silicic acid and aqueous solutions of NaOH or KOH. The synthetic phases were characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and X-ray Absorption Near Edge Structure (XANES) spectroscopy. The results showed that the best hydrothermal conditions to prepare well-crystallized Mn-kaolinite were 100-175 °C for 2 days using either NaOH or KOH and the Mn species was mostly present as Mn³⁺ as determined by XANES spectroscopy.

Original language	English
Pages (from-to)	74-79
Number of pages	6
Journal	Applied Clay Science
Volume	49
Issue number	1-2
DOIs	https://doi.org/10.1016/j.clay.2010.04.006
State	Published - 2010

Keywords

Hydrothermal conditions
Mn-carbonate
Mn-kaolinite
Mn-mica

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10.1016/j.clay.2010.04.006

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title = "Hydrothermal synthesis of Mn-kaolinite using NaOH or KOH and characterization",

abstract = "Mn-kaolinite containing both Mn and Al in the octahedral sheetwas prepared under hydrothermal conditions of 100-200 °C for 6-96 h by using Al-nitrate, Mn-carbonate, silicic acid and aqueous solutions of NaOH or KOH. The synthetic phases were characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and X-ray Absorption Near Edge Structure (XANES) spectroscopy. The results showed that the best hydrothermal conditions to prepare well-crystallized Mn-kaolinite were 100-175 °C for 2 days using either NaOH or KOH and the Mn species was mostly present as Mn3+ as determined by XANES spectroscopy.",

keywords = "Hydrothermal conditions, Mn-carbonate, Mn-kaolinite, Mn-mica",

author = "Seliem, {Moaaz K.} and S. Komarneni and M. Park and H. Katsuki and Shahien, {M. G.} and Khalil, {A. A.} and {Abd El-Gaid}, {I. M.}",

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doi = "10.1016/j.clay.2010.04.006",

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volume = "49",

pages = "74--79",

journal = "Applied Clay Science",

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TY - JOUR

T1 - Hydrothermal synthesis of Mn-kaolinite using NaOH or KOH and characterization

AU - Seliem, Moaaz K.

AU - Komarneni, S.

AU - Park, M.

AU - Katsuki, H.

AU - Shahien, M. G.

AU - Khalil, A. A.

AU - Abd El-Gaid, I. M.

PY - 2010

Y1 - 2010

N2 - Mn-kaolinite containing both Mn and Al in the octahedral sheetwas prepared under hydrothermal conditions of 100-200 °C for 6-96 h by using Al-nitrate, Mn-carbonate, silicic acid and aqueous solutions of NaOH or KOH. The synthetic phases were characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and X-ray Absorption Near Edge Structure (XANES) spectroscopy. The results showed that the best hydrothermal conditions to prepare well-crystallized Mn-kaolinite were 100-175 °C for 2 days using either NaOH or KOH and the Mn species was mostly present as Mn3+ as determined by XANES spectroscopy.

AB - Mn-kaolinite containing both Mn and Al in the octahedral sheetwas prepared under hydrothermal conditions of 100-200 °C for 6-96 h by using Al-nitrate, Mn-carbonate, silicic acid and aqueous solutions of NaOH or KOH. The synthetic phases were characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and X-ray Absorption Near Edge Structure (XANES) spectroscopy. The results showed that the best hydrothermal conditions to prepare well-crystallized Mn-kaolinite were 100-175 °C for 2 days using either NaOH or KOH and the Mn species was mostly present as Mn3+ as determined by XANES spectroscopy.

KW - Hydrothermal conditions

KW - Mn-carbonate

KW - Mn-kaolinite

KW - Mn-mica

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DO - 10.1016/j.clay.2010.04.006

M3 - Article

AN - SCOPUS:83955164367

SN - 0169-1317

VL - 49

SP - 74

EP - 79

JO - Applied Clay Science

JF - Applied Clay Science

IS - 1-2

ER -

Hydrothermal synthesis of Mn-kaolinite using NaOH or KOH and characterization

Abstract

Keywords

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