摘要
利用水热法对蒙东褐煤进行了改性。通过微量热仪测定和分析了煤炭表面骨架大分子和各种官能团与水结合能的大小。结果表明,水热法改性后,褐煤中的羧基和羰基随温度升高显著降低,而羟基的变化比较复杂。计算得到了低阶煤中含氧官能团和煤炭表面骨架大分子亲水能力由大到小的顺序是羧基>酚羟基>羰基>煤炭表面骨架大分子。
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.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2014年第3期284-289,共6页
Journal of Fuel Chemistry and Technology
基金
国家重点基础研究发展规划(973计划
2012CB214901)
中央高校基本科研业务费专项基金资助
关键词
含氧官能团
褐煤
水热法
oxygen containing functional groups
lignite
hydro-thermal method
