Structure and Properties of Victorian Brown Coal

Jun ichiro Hayashi, Chun Zhu Li

Research output: Chapter in Book/Report/Conference proceedingChapter

35 Citations (Scopus)

Abstract

Victorian brown coal is a family of low-rank coals with unique physical and chemical properties. This chapter deals with petrography of Victorian brown coal, its structure and composition at the macroscopic and microscopic levels when it is examined as an organic rock using optical microscopy at up to 1,000 magnifications. From the petrographic description of Victorian brown coal, it is clear that the brown coal has not undergone extensive coalification that could only take place at elevated temperature and pressure for prolonged time under geological conditions. As a result, the coal seam contains large amounts of water, amounting up to 66% of its mass. The transformation of coal at this stage confers special physical structure and properties to the Victorian brown coal, which contains abundant oxygen-containing functional groups, making the coal hydrophilic. This is the primary reason for its water contents as much as around 65 wt% on a wet basis. Therefore, water is an integral part of the brown coal in its natural status.

Original languageEnglish
Title of host publicationAdvances in the Science of Victorian Brown Coal
PublisherElsevier Inc.
ISBN (Electronic)9780080526447
ISBN (Print)9780080442693
DOIs
Publication statusPublished - Dec 13 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Energy(all)

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    Hayashi, J. I., & Li, C. Z. (2004). Structure and Properties of Victorian Brown Coal. In Advances in the Science of Victorian Brown Coal Elsevier Inc.. https://doi.org/10.1016/B978-008044269-3/50003-0