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

被引：30

作者：

Kim, Hyun-Seok ^{[1
]}

Nishiyama, Yusuke ^{[2
]}

Ideta, Keiko ^{[3
]}

Miyawaki, Jin ^{[1
]}

Matsushita, Yohsuke ^{[4
]}

Park, Joo-Il ^{[1
]}

Mochida, Isao ^{[4
]}

Yoon, Seong-Ho ^{[1
]}

机构：

[1] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Kasuga, Fukuoka 8168580, Japan

[2] JEOL Resonance Inc, Akishima, Tokyo 1968558, Japan

[3] Kyushu Univ, Inst Mat Chem & Engn, Kasuga, Fukuoka 8168580, Japan

[4] Kyushu Univ, Res & Educ Ctr Carbon Resources, Kasuga, Fukuoka 8168580, Japan

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2013年 / 19卷 / 05期

关键词：

Loy Yang brown coal; Adsorbed water; Spin-echo MAS NMR; COAL/WATER SYSTEM; NMR;

D O I：

10.1016/j.jiec.2013.02.005

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

H-1 spin-echo MAS NMR and H-1 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 H-1 saturated spin-echo technique. By comparing the proton intensity of the C-H 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. (C) 2013 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：1673 / 1679

页数：7

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