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

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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 (US)
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

All Science Journal Classification (ASJC) codes

Geology
Geochemistry and Petrology

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10.1016/j.clay.2010.04.006

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@article{157847d22cf0491789aa8cf4800d03bc,

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.",

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.}",

note = "Funding Information: We thank David Eisenberg and Roland Luthy for their computer analysis and continued interest; Emil Reisler, Douglas Root, David Sigman. Arnie Berk. Bill Wickner, Paul Boyer. and Tony Hunter for their many constructive discussions and comments on the manuscript. 0. N. W. is an Investigator and Y. M. is an Associate of the Howard Hughes Medical Institute. This work was partly supported by grants from the National Cancer Institute (ROl CA27507 and R35 CA53867).",

year = "2010",

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

language = "English (US)",

volume = "49",

pages = "74--79",

journal = "Applied Clay Science",

issn = "0169-1317",

publisher = "Elsevier B.V.",

number = "1-2",

}

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.

N1 - Funding Information: We thank David Eisenberg and Roland Luthy for their computer analysis and continued interest; Emil Reisler, Douglas Root, David Sigman. Arnie Berk. Bill Wickner, Paul Boyer. and Tony Hunter for their many constructive discussions and comments on the manuscript. 0. N. W. is an Investigator and Y. M. is an Associate of the Howard Hughes Medical Institute. This work was partly supported by grants from the National Cancer Institute (ROl CA27507 and R35 CA53867).

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.

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U2 - 10.1016/j.clay.2010.04.006

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

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