Analysis of water in Loy Yang brown coal using solid-state 1H NMR

Hyun Seok Kim; Yusuke Nishiyama; Keiko Ideta; Jin Miyawaki; Yohsuke Matsushita; Joo Il Park; Isao Mochida; Seong Ho Yoon

doi:10.1016/j.jiec.2013.02.005

Analysis of water in Loy Yang brown coal using solid-state ¹H NMR

Hyun Seok Kim, Yusuke Nishiyama, Keiko Ideta, Jin Miyawaki, Yohsuke Matsushita, Joo Il Park, Isao Mochida, Seong Ho Yoon

Department of Advanced Device Materials

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

22 Citations (Scopus)

Abstract

¹H spin-echo MAS NMR and ¹H saturated spin-echo MAS NMR were applied to classify the water in Loy Yang coal. Adsorbed water was examined based on the proton spectra, in which four major portions were identified according to the moisture contents. Free water could be quantified by analyzing the proton free induction decays (FIDs) obtained using the ¹H saturated spin-echo technique. By comparing the proton intensity of the CH portion to the aromatic and N portion in the proton spectra, and by evaluating the FIDs, the water in Loy Yang coal could be classified.

Original language	English
Pages (from-to)	1673-1679
Number of pages	7
Journal	Journal of Industrial and Engineering Chemistry
Volume	19
Issue number	5
DOIs	https://doi.org/10.1016/j.jiec.2013.02.005
Publication status	Published - Sept 25 2013

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)

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title = "Analysis of water in Loy Yang brown coal using solid-state 1H NMR",

abstract = "1H spin-echo MAS NMR and 1H saturated spin-echo MAS NMR were applied to classify the water in Loy Yang coal. Adsorbed water was examined based on the proton spectra, in which four major portions were identified according to the moisture contents. Free water could be quantified by analyzing the proton free induction decays (FIDs) obtained using the 1H saturated spin-echo technique. By comparing the proton intensity of the CH portion to the aromatic and N portion in the proton spectra, and by evaluating the FIDs, the water in Loy Yang coal could be classified.",

author = "Kim, {Hyun Seok} and Yusuke Nishiyama and Keiko Ideta and Jin Miyawaki and Yohsuke Matsushita and Park, {Joo Il} and Isao Mochida and Yoon, {Seong Ho}",

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AU - Kim, Hyun Seok

AU - Nishiyama, Yusuke

AU - Ideta, Keiko

AU - Miyawaki, Jin

AU - Matsushita, Yohsuke

AU - Park, Joo Il

AU - Mochida, Isao

AU - Yoon, Seong Ho

PY - 2013/9/25

Y1 - 2013/9/25

N2 - 1H spin-echo MAS NMR and 1H saturated spin-echo MAS NMR were applied to classify the water in Loy Yang coal. Adsorbed water was examined based on the proton spectra, in which four major portions were identified according to the moisture contents. Free water could be quantified by analyzing the proton free induction decays (FIDs) obtained using the 1H saturated spin-echo technique. By comparing the proton intensity of the CH portion to the aromatic and N portion in the proton spectra, and by evaluating the FIDs, the water in Loy Yang coal could be classified.

AB - 1H spin-echo MAS NMR and 1H saturated spin-echo MAS NMR were applied to classify the water in Loy Yang coal. Adsorbed water was examined based on the proton spectra, in which four major portions were identified according to the moisture contents. Free water could be quantified by analyzing the proton free induction decays (FIDs) obtained using the 1H saturated spin-echo technique. By comparing the proton intensity of the CH portion to the aromatic and N portion in the proton spectra, and by evaluating the FIDs, the water in Loy Yang coal could be classified.

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Analysis of water in Loy Yang brown coal using solid-state ¹H NMR

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