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超临界水中煤基多孔炭孔隙形成过程的研究

周娴娴 ,  曲旋 ,  张荣 ,  毕继诚

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引用本文: 周娴娴, 曲旋, 张荣, 毕继诚. 超临界水中煤基多孔炭孔隙形成过程的研究[J]. 燃料化学学报, 2015, 43(9): 1025-1031. shu
Citation:  ZHOU Xian-xian, QU Xuan, ZHANG Rong, BI Ji-cheng. Pore evolution of coal based porous carbon in supercritical water[J]. Journal of Fuel Chemistry and Technology, 2015, 43(9): 1025-1031. shu

超临界水中煤基多孔炭孔隙形成过程的研究

    通讯作者: 毕继诚,E-mail:bijc@sxicc.ac.cn。
  • 基金项目:

    国家高技术研究发展计划(863计划, 2011AA05A201)。 (863计划, 2011AA05A201)

摘要: 在半连续超临界水反应器(SCWR)中考察了不同温度、反应时间下昭通褐煤的转化特性,结合半焦有机官能团及碳微晶结构分析,推测在超临界水中半焦孔隙的形成过程以及煤中矿物质的作用。结果表明,超临界水首先快速萃取出褐煤热解产物,促进了半焦石墨化,形成良好的炭素前驱体,此过程对半焦孔结构基本无作用;当温度高于550 ℃,炭素前驱体发生气化反应,产生了较多的C-O-C交联结构,比表面积明显提高,逐渐形成多孔炭材料;脱灰后的煤在升温过程中具有更高的萃取率,形成有利于微孔产生的炭素前驱体,煤中的矿物质更有利于中孔的形成。

English

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  • 收稿日期:  2015-05-19
  • 网络出版日期:  2015-07-06
通讯作者: 陈斌, bchen63@163.com
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