期刊
FUEL
卷 84, 期 7-8, 页码 939-941出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2004.12.001
关键词
coal; N-methyl-2-pyrrolidinone; extraction; aggregation
Tow-step extraction of Upper Freeport (UF) coal, i.e. exhaustive extraction with N-methyl-2-pyrrolidinone (NMP) solvent and subsequent extraction with the CS2/NMP mixed solvent (1: 1 by volume) with or without additive was compared with the direct extraction of UF coal with the CS2/NMP mixed solvent (1: 1 by volume) with or without additive. It was found that there is almost no difference of extraction yields between the two-step extraction and direct extraction with or without additive. The result show that NMP can only give external extraction to extract the outside fractions of coal particles, and this will not cause the new aggregation formed in the coal molecules. The interactions between coal molecule and additive are responsible for the extraction yield enhancement by additive. (c) 2005 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据