The relationship between benzene carboxylic acids from coal via selective oxidation and coal rank
The relationship between benzene carboxylic acids from coal via selective oxidation and coal rank
复制标题
煤选择性氧化苯甲酸与煤阶的关系
DOI：
10.1016/j.fuproc.2017.02.035
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发表时间：
2017-06
影响因子：
7.5
通讯作者：
Ren Shuhang
中科院分区：
文献类型：
--
作者：
Yang Fan;Hou Yucui;Wu Weize;Wang Qian;Niu Muge;Ren Shuhang
煤的氧化制苯羧酸(BCAs)一直是人们研究的热点。然而，煤级与煤的BCA之间的关系尚不清楚。本研究以8种不同煤阶的煤种为研究对象，研究了煤阶对BCA产量分布的影响。结果表明，随着煤阶的增加，BCAs的产率增加，煤的结构越来越难降解。此外，随着煤阶的增加，BCA的产率分布也发生了明显的变化。~(13)C核磁共振结果表明，随着煤化程度的增加，芳香碳(FA)和芳香桥头碳在芳香碳中的摩尔分数(XB)逐渐增加，芳环的烷基取代度(δ)和平均亚甲基链长(CN)均减小。随着煤阶的提高，煤中含有越来越多的邻苯二甲酸、偏苯三烯酸、偏苯四甲酸和先驱酸的母体结构。当煤的含碳量为-87%时，煤的结构具有突变性质，即煤的结构中存在越来越多的芳环环状连接。
The oxidation of coal to produce benzene carboxylic acids (BCAs) was widely researched. However, the relationship between coal rank and BCAs from coal is unknown. In this study, 8 kinds of coal with different ranks were investigated and the effect of coal rank on the BCA yield distribution was studied. The results indicate that with the increase of coal rank, the yield of BCAs increases, and the structure of coal becomes more and more difficult to be degraded. In addition, BCA yield distribution varies significantly with the increase of coal rank. The results of13C NMR show that with increasing coal rank, the fraction of aromatic carbon (fa) and mole fraction of aromatic bridgehead carbon in aromatic carbon (Xb) both are increased gradually, and alkyl-substituted degree of aromatic ring (δ) and average methylene chain length (Cn) both are decreased. More and more parent structures of phthalic acid, trimellitic acid, hemimellitic acid and prehnitic acid exist in the coal with the increase of coal rank. When the carbon content of coal is > 87%, the structure of coal has a mutation property that more and more circular catenations of aromatic rings exist in the structure of coal.
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影响因子：
5.3
作者：
SOLUM, MS;PUGMIRE, RJ;GRANT, DM
通讯作者：
GRANT, DM
影响因子：
15
作者：
Jacob Entel
通讯作者：
Jacob Entel
影响因子：
5.3
作者：
P. Hatcher;J. Faulon;K. Wenzel;G. Cody
通讯作者：
P. Hatcher;J. Faulon;K. Wenzel;G. Cody
影响因子：
5.3
作者：
J. Hayashi;S. Aizawa;H. Kumagai;T. Chiba;Tadashi Yoshida;S. Morooka
通讯作者：
J. Hayashi;S. Aizawa;H. Kumagai;T. Chiba;Tadashi Yoshida;S. Morooka
影响因子：
5.3
作者：
L. Stock;M. Obeng
通讯作者：
L. Stock;M. Obeng