Synthesis of novel Na-rich mica and selective strontium ion exchange and fixation

Tatsuya Kodama; Sachiko Nagai; Kumiko Hasegawa; Ken Ichi Shimizu; Sridhar Komarneni

doi:10.1081/SS-120003052

Synthesis of novel Na-rich mica and selective strontium ion exchange and fixation

Tatsuya Kodama, Sachiko Nagai, Kumiko Hasegawa, Ken Ichi Shimizu, Sridhar Komarneni

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Abstract

A novel swelling mica of composition, Na_2.94(Mg_5.55Ti_0.07Fe_0.04) (Al_2.07Si_5.83)O₂₀F₄ ·1.72H₂O, was synthesized from kaolinite, and this mica was found to be very selective for Sr with a high capacity for uptake. Apparently, both tetrahedral and octahedral sheets contribute to the total negative charge in this mica. A relatively low-temperature heat treatment at 250°C of the Sr-exchanged mica resulted in the collapse of the hydrated interlayer spacings of the mica to immobilize strontium in a stable unhydrated phase.

Original language	English (US)
Pages (from-to)	1927-1942
Number of pages	16
Journal	Separation Science and Technology
Volume	37
Issue number	8
DOIs	https://doi.org/10.1081/SS-120003052
State	Published - 2002

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
Process Chemistry and Technology
Filtration and Separation

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title = "Synthesis of novel Na-rich mica and selective strontium ion exchange and fixation",

abstract = "A novel swelling mica of composition, Na2.94(Mg5.55Ti0.07Fe0.04) (Al2.07Si5.83)O20F4 ·1.72H2O, was synthesized from kaolinite, and this mica was found to be very selective for Sr with a high capacity for uptake. Apparently, both tetrahedral and octahedral sheets contribute to the total negative charge in this mica. A relatively low-temperature heat treatment at 250°C of the Sr-exchanged mica resulted in the collapse of the hydrated interlayer spacings of the mica to immobilize strontium in a stable unhydrated phase.",

author = "Tatsuya Kodama and Sachiko Nagai and Kumiko Hasegawa and Shimizu, {Ken Ichi} and Sridhar Komarneni",

year = "2002",

doi = "10.1081/SS-120003052",

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T1 - Synthesis of novel Na-rich mica and selective strontium ion exchange and fixation

AU - Kodama, Tatsuya

AU - Nagai, Sachiko

AU - Hasegawa, Kumiko

AU - Shimizu, Ken Ichi

AU - Komarneni, Sridhar

PY - 2002

Y1 - 2002

N2 - A novel swelling mica of composition, Na2.94(Mg5.55Ti0.07Fe0.04) (Al2.07Si5.83)O20F4 ·1.72H2O, was synthesized from kaolinite, and this mica was found to be very selective for Sr with a high capacity for uptake. Apparently, both tetrahedral and octahedral sheets contribute to the total negative charge in this mica. A relatively low-temperature heat treatment at 250°C of the Sr-exchanged mica resulted in the collapse of the hydrated interlayer spacings of the mica to immobilize strontium in a stable unhydrated phase.

AB - A novel swelling mica of composition, Na2.94(Mg5.55Ti0.07Fe0.04) (Al2.07Si5.83)O20F4 ·1.72H2O, was synthesized from kaolinite, and this mica was found to be very selective for Sr with a high capacity for uptake. Apparently, both tetrahedral and octahedral sheets contribute to the total negative charge in this mica. A relatively low-temperature heat treatment at 250°C of the Sr-exchanged mica resulted in the collapse of the hydrated interlayer spacings of the mica to immobilize strontium in a stable unhydrated phase.

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DO - 10.1081/SS-120003052

M3 - Article

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SP - 1927

EP - 1942

JO - Separation Science and Technology

JF - Separation Science and Technology

IS - 8

ER -

Synthesis of novel Na-rich mica and selective strontium ion exchange and fixation

Abstract

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