Analysis of oxygen-functional groups in brown coals

被引：152

作者：

Murata, S ^{[1
]}

Hosokawa, M ^{[1
]}

Kidena, K ^{[1
]}

Nomura, M ^{[1
]}

机构：

[1] Osaka Univ, Fac Engn, Dept Appl Chem, Suita, Osaka 5650871, Japan

来源：

FUEL PROCESSING TECHNOLOGY | 2000年 / 67卷 / 03期

基金：

日本学术振兴会;

关键词：

brown coal; oxygen-functionality; ether bond cleavage; solubility;

D O I：

10.1016/S0378-3820(00)00102-8

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Distribution of oxygen-functional groups (alcohol, phenol, carboxyl, carbonyl, and ether groups) in four brown coals, Australian Yallourn (abbreviated as YL), Indonesian South Banko (SB) and Adaro (AD), and US Beulah Zap (BZ), was evaluated based on chemical analysis and C-13 NMR measurement. Concentrations of carbonyl and ether groups were about 20%, based on total oxygen in coal, while the distribution of carboxyl, alcohol, and phenol changed from coal to coal. The evaluation of the amount of reactive ether groups was conducted by treating the sample coals with SiCl4-NaI, which is able to cleave alkylaryl- and dialkylethers. The results indicate that the sample coals contained reactive ether groups ranging from 0.3 to 1.8 groups per 100 carbon in coal. The relationships between the amounts of oxygen-functional groups and the solubility of coal were also investigated. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：231 / 243

页数：13

共 18 条

[11]

PRSADA JV, 1991, FUEL, V70, P627

[12] DETERMINATION OF AROMATIC AND ALIPHATIC-CH GROUPS IN COAL BY FT-IR .2. STUDIES OF COALS AND VITRINITE CONCENTRATES [J].

RIESSER, B ;

STARSINIC, M ;

SQUIRES, E ;

DAVIS, A ;

PAINTER, PC .

FUEL, 1984, 63 (09) :1253-1261

[13]

SCHAFER HNS, 1970, FUEL, V55, P138

[14]

TSUKASHIMA H, 1967, J FUEL SOC JPN, V46, P873

[15]

VANKREVELEN DW, 1993, COAL, pCH9

[16] EFFECTS OF PRETREATMENT OF ZAO-ZHUANG AND AKABIRA BITUMINOUS COALS WITH SICL4-NAI REAGENTS ON PYROLYTIC BEHAVIOR OF EXTRACTS [J].

YAMAMOTO, A ;

MURATA, S ;

NOMURA, M .

CHEMISTRY LETTERS, 1994, (08) :1387-1390

[17]

Yamamoto O., 1994, J JPN I ENERGY, V73, P267

[18] ELUCIDATION OF STRUCTURAL AND HYDROLIQUEFACTION CHARACTERISTICS OF YALLOURN BROWN COAL BY C-13 CP MAS NMR SPECTROMETRY [J].

YOSHIDA, T ;

NAKATA, Y ;

YOSHIDA, R ;

UEDA, S ;

KANDA, N ;

MAEKAWA, Y .

FUEL, 1982, 61 (09) :824-830

← 1 2 →