Chemical state of boron in coal fly ash investigated by focused-ion-beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS) and satellite-transition magic angle spinning nuclear magnetic resonance (STMAS NMR)

Shun Ichi Hayashi; Takafumi Takahashi; Koji Kanehashi; Naoyoshi Kubota; Kaoru Mizuno; Shunsuke Kashiwakura; Tetsuo Sakamoto; Tetsuya Nagasaka

doi:10.1016/j.chemosphere.2010.05.015

Chemical state of boron in coal fly ash investigated by focused-ion-beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS) and satellite-transition magic angle spinning nuclear magnetic resonance (STMAS NMR)

Shun Ichi Hayashi, Takafumi Takahashi, Koji Kanehashi, Naoyoshi Kubota, Kaoru Mizuno, Shunsuke Kashiwakura, Tetsuo Sakamoto, Tetsuya Nagasaka

New Industry Creation Hatchery Center (NICHe)

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

21 Citations (Scopus)

Abstract

The chemical states of boron in coal fly ash, which may control its leaching into the environment, were investigated by focused-ion-beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS) and satellite-transition magic angle spinning nuclear magnetic resonance (STMAS NMR) spectroscopy. The distribution of boron on the surface and in the interior of micron-sized fly ash particles was directly observed by FIB-TOF-SIMS. Coordination numbers of boron and its bonding with different atoms from particles of bulk samples were investigated by STMAS NMR. Boron in coal fly ash with relatively poor leaching characteristics appears as trigonal BO₃ and coexists with Ca and Fe at the outer layer of every particle and inside CaO-MgO particles. In contrast, boron in coal fly ash with better leaching characteristics appears as CaO- or MgO-trigonal BO₃ and tetragonal BO₄, and it is distributed only on the outer surface of each ash particle without showing any correlation with a particular element.

Original language	English
Pages (from-to)	881-887
Number of pages	7
Journal	Chemosphere
Volume	80
Issue number	8
DOIs	https://doi.org/10.1016/j.chemosphere.2010.05.015
Publication status	Published - 2010 Aug

Keywords

Boron
Chemical state
Coal fly ash
Leaching characteristics
NMR
TOF-SIMS

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Hayashi, S. I., Takahashi, T., Kanehashi, K., Kubota, N., Mizuno, K., Kashiwakura, S., Sakamoto, T., & Nagasaka, T. (2010). Chemical state of boron in coal fly ash investigated by focused-ion-beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS) and satellite-transition magic angle spinning nuclear magnetic resonance (STMAS NMR). Chemosphere, 80(8), 881-887. https://doi.org/10.1016/j.chemosphere.2010.05.015

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title = "Chemical state of boron in coal fly ash investigated by focused-ion-beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS) and satellite-transition magic angle spinning nuclear magnetic resonance (STMAS NMR)",

abstract = "The chemical states of boron in coal fly ash, which may control its leaching into the environment, were investigated by focused-ion-beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS) and satellite-transition magic angle spinning nuclear magnetic resonance (STMAS NMR) spectroscopy. The distribution of boron on the surface and in the interior of micron-sized fly ash particles was directly observed by FIB-TOF-SIMS. Coordination numbers of boron and its bonding with different atoms from particles of bulk samples were investigated by STMAS NMR. Boron in coal fly ash with relatively poor leaching characteristics appears as trigonal BO3 and coexists with Ca and Fe at the outer layer of every particle and inside CaO-MgO particles. In contrast, boron in coal fly ash with better leaching characteristics appears as CaO- or MgO-trigonal BO3 and tetragonal BO4, and it is distributed only on the outer surface of each ash particle without showing any correlation with a particular element.",

keywords = "Boron, Chemical state, Coal fly ash, Leaching characteristics, NMR, TOF-SIMS",

author = "Hayashi, {Shun Ichi} and Takafumi Takahashi and Koji Kanehashi and Naoyoshi Kubota and Kaoru Mizuno and Shunsuke Kashiwakura and Tetsuo Sakamoto and Tetsuya Nagasaka",

note = "Funding Information: The authors would like express their appreciation for the financial support of the Japan Science and Technology Agency “Development of System and Technology for Advanced Measurement and Analysis”.",

year = "2010",

month = aug,

doi = "10.1016/j.chemosphere.2010.05.015",

language = "English",

volume = "80",

pages = "881--887",

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Hayashi, SI, Takahashi, T, Kanehashi, K, Kubota, N, Mizuno, K, Kashiwakura, S, Sakamoto, T & Nagasaka, T 2010, 'Chemical state of boron in coal fly ash investigated by focused-ion-beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS) and satellite-transition magic angle spinning nuclear magnetic resonance (STMAS NMR)', Chemosphere, vol. 80, no. 8, pp. 881-887. https://doi.org/10.1016/j.chemosphere.2010.05.015

Chemical state of boron in coal fly ash investigated by focused-ion-beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS) and satellite-transition magic angle spinning nuclear magnetic resonance (STMAS NMR). / Hayashi, Shun Ichi; Takahashi, Takafumi; Kanehashi, Koji et al.
In: Chemosphere, Vol. 80, No. 8, 08.2010, p. 881-887.

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

TY - JOUR

T1 - Chemical state of boron in coal fly ash investigated by focused-ion-beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS) and satellite-transition magic angle spinning nuclear magnetic resonance (STMAS NMR)

AU - Hayashi, Shun Ichi

AU - Takahashi, Takafumi

AU - Kanehashi, Koji

AU - Kubota, Naoyoshi

AU - Mizuno, Kaoru

AU - Kashiwakura, Shunsuke

AU - Sakamoto, Tetsuo

AU - Nagasaka, Tetsuya

N1 - Funding Information: The authors would like express their appreciation for the financial support of the Japan Science and Technology Agency “Development of System and Technology for Advanced Measurement and Analysis”.

PY - 2010/8

Y1 - 2010/8

N2 - The chemical states of boron in coal fly ash, which may control its leaching into the environment, were investigated by focused-ion-beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS) and satellite-transition magic angle spinning nuclear magnetic resonance (STMAS NMR) spectroscopy. The distribution of boron on the surface and in the interior of micron-sized fly ash particles was directly observed by FIB-TOF-SIMS. Coordination numbers of boron and its bonding with different atoms from particles of bulk samples were investigated by STMAS NMR. Boron in coal fly ash with relatively poor leaching characteristics appears as trigonal BO3 and coexists with Ca and Fe at the outer layer of every particle and inside CaO-MgO particles. In contrast, boron in coal fly ash with better leaching characteristics appears as CaO- or MgO-trigonal BO3 and tetragonal BO4, and it is distributed only on the outer surface of each ash particle without showing any correlation with a particular element.

AB - The chemical states of boron in coal fly ash, which may control its leaching into the environment, were investigated by focused-ion-beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS) and satellite-transition magic angle spinning nuclear magnetic resonance (STMAS NMR) spectroscopy. The distribution of boron on the surface and in the interior of micron-sized fly ash particles was directly observed by FIB-TOF-SIMS. Coordination numbers of boron and its bonding with different atoms from particles of bulk samples were investigated by STMAS NMR. Boron in coal fly ash with relatively poor leaching characteristics appears as trigonal BO3 and coexists with Ca and Fe at the outer layer of every particle and inside CaO-MgO particles. In contrast, boron in coal fly ash with better leaching characteristics appears as CaO- or MgO-trigonal BO3 and tetragonal BO4, and it is distributed only on the outer surface of each ash particle without showing any correlation with a particular element.

KW - Boron

KW - Chemical state

KW - Coal fly ash

KW - Leaching characteristics

KW - NMR

KW - TOF-SIMS

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DO - 10.1016/j.chemosphere.2010.05.015

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AN - SCOPUS:77954955575

SN - 0045-6535

VL - 80

SP - 881

EP - 887

JO - Chemosphere

JF - Chemosphere

IS - 8

ER -

Hayashi SI, Takahashi T, Kanehashi K, Kubota N, Mizuno K, Kashiwakura S et al. Chemical state of boron in coal fly ash investigated by focused-ion-beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS) and satellite-transition magic angle spinning nuclear magnetic resonance (STMAS NMR). Chemosphere. 2010 Aug;80(8):881-887. doi: 10.1016/j.chemosphere.2010.05.015

Chemical state of boron in coal fly ash investigated by focused-ion-beam time-of-flight secondary ion mass spectrometry (FIB-TOF-SIMS) and satellite-transition magic angle spinning nuclear magnetic resonance (STMAS NMR)

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