Advances in New and Renewable Energy >
Characteristics of Residues from Lignite Liquefaction in Near-Critical Water
Received date: 2017-02-13
Revised date: 2017-03-30
Online published: 2017-06-30
XRD and FT-IR were used to analyze the structural characteristics of the solid residues from lignite oxidation in near-critical water and low-temperature water. The results showed that the lignite was degraded rapidly and effectively under near-critical water condition, and water-soluble substances were formed. The height and diameter of the aromatic layer in the residues dramatically decreased. The contents of amino, methylene and phenolic hydroxyl decreased significantly, alkyl ether was the most stable, almost have no reaction; carboxyl completely disappeared, OH•••OH is more stable than carboxyl.
Key words： Houma lignite; near-critical water; lignite liquefaction; XRD; FT-IR; solid residue
TAO Ding-kun , RAN Jing-yu , ZHANG Li , PU Ge , YANG Zhong-qing , QING Chang-lei , DU Xue-sen . Characteristics of Residues from Lignite Liquefaction in Near-Critical Water[J]. Advances in New and Renewable Energy, 2017 , 5(3) : 226 -230 . DOI: 10.3969/j.issn.2095-560X.2017.03.010
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