Citation: LIU Hong-ying, GAO Xiang, ZHANG Ming-yang, ZHU Yan-ming, ZHU Shu-quan. Study on lignite modified by hydrothermal and the interaction between the oxygen containing functional groups and water[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(3): 284-289. shu

Study on lignite modified by hydrothermal and the interaction between the oxygen containing functional groups and water

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School of Chemical and Environmental Engineering, China University of Mining and Thechnology (Beijing), Beijing 100083, China

Corresponding author: LIU Hong-ying, ZHU Shu-quan,
Received Date: 22 August 2013
Available Online: 6 November 2013
Fund Project: 国家重点基础研究发展规划(973计划,2012CB214901) (973计划,2012CB214901)

An Mengdong lignite was modified by hydrothermal method. The water binding energy between the coal surface skeleton molecules and various oxygen containing functional groups was determined and analyzed by means of micro calorimeter. The results show that carboxyl and carbonyl significantly reduced with the increase of temperature, while the change of hydroxyl is complex. The order of hydrophilic ability from large to small for oxygen containing functional groups on coal surface is carboxyl, phenolic hydroxyl, carbonyl, large molecular of the coal.
- oxygen containing functional groups,
- lignite,
- hydro-thermal method
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