Study of kinetics of iron minerals in coal by 57Fe Mossbauer and FT-IR spectroscopy during natural burning

被引：0

作者：

Bandyopadhyay, Debashis ^{[1
]}

机构：

[1] Birla Inst Technol & Sci, Phys Grp, Rajasthan, India

来源：

HYPERFINE INTERACTIONS | 2005年 / 163卷 / 1-4期

关键词：

Mossbauer spectroscopy; pyrite; coal burning; chemical kinetics;

D O I：

10.1007/s10751-006-9227-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The process of burning of sulphur rich coal from Jaipur mine in North-Eastern India was carried out at a temperature of (675 +/- 5) degrees C for different time intervals. Fe-57 Mossbauer spectroscopy was applied to study the reaction products of iron compounds in each step of thermal treatment. The transformation of Szomolnokite (FeSO4 center dot H2O) and Pyrite (FeS2) in the as received coal sample finally transformed to gamma-Fe2O3 and alpha-Fe2O3. Other clay minerals produce some low spin silicate ash. Fourier Transmission Infrared (FT-IR) spectroscopy gives the ratio of several structural parameters such as H-ar/H-al and H-ar/C-ar. DTA analysis of the coal sample gives the exothermic reaction at different temperatures. TGA and TG analysis of the coal sample in an inert atmosphere shows the weight loss of the coal sample in different temperature ranges.

引用

页码：167 / 176

页数：10

共 20 条

[1] Characterisation of an Egyptian coal by Mossbauer and FT-IR spectroscopy [J].

Ahmed, MA ;

Blesa, MJ ;

Juan, R ;

Vandenberghe, RE .

FUEL, 2003, 82 (14) :1825-1829

[2] Study of the roasting of chalcopyrite minerals by 57Fe Mossbauer spectroscopy [J].

Bandyopadhyay, D ;

Singru, RM ;

Biswas, AK .

MINERALS ENGINEERING, 2000, 13 (8-9) :973-978

[3] Chemical demineralization of a Turkish high ash bituminous coal [J].

Bolat, E ;

Saglam, S ;

Piskin, S .

FUEL PROCESSING TECHNOLOGY, 1998, 57 (02) :93-99

[4]

BROWN JK, 1960, FUEL, V39, P87

[5] MOSSBAUER STUDIES OF COAL AND COKE - QUANTITATIVE PHASE IDENTIFICATION AND DIRECT DETERMINATION OF PYRITIC AND IRON SULFIDE SULFUR-CONTENT [J].

HUFFMAN, GP ;

HUGGINS, FE .

FUEL, 1978, 57 (10) :592-604

[6] FTIR study of the evolution of coal structure during the coalification process [J].

Ibarra, JV ;

Munoz, E ;

Moliner, R .

ORGANIC GEOCHEMISTRY, 1996, 24 (6-7) :725-735

[7] MAGNETIC AND MOSSBAUER SPECTROSCOPIC CHARACTERIZATION OF COAL [J].

JACOBS, IS ;

LEVINSON, LM ;

HART, HR .

JOURNAL OF APPLIED PHYSICS, 1978, 49 (03) :1775-1780

[8]

Li W, 1996, FUEL SCI TECHN INT, V14, P651

[9]

MONTANO PA, 1981, MOSSBAUER SPECTROSCO, P235

[10] MOSSBAUER-SPECTROSCOPY STUDY OF THE CHEMICAL-STATE OF IRON IN DANISH MESOZOIC SEDIMENTS [J].

MORUP, S ;

FRANCK, J ;

VANWONTERGHEM, J ;

ROYPOULSEN, H ;

LARSEN, L .

FUEL, 1985, 64 (04) :528-539

← 1 2 →