文献类型：期刊文献

英文题名：Hydrogen Transfer Route during Hydrothermal Treatment of Lignite Using the Isotope Tracer Method and Improving the Pyrolysis Tar Yield

作者：Wang, Lanlan[1];Pan, Tieying[1];Liu, Peng[2];Zhang, Dexiang[2]

机构：[1]E China Univ Sci & Technol, Anal & Res Ctr, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Key Lab Coal Gasificat & Energy Chem Engn, Dept Chem Engn Energy Resources, Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2016

卷号：30

期号：6

起止页码：4562

外文期刊名：ENERGY & FUELS

收录：;EI(收录号：20162602539158);WOS:【SCI-EXPANDED(收录号:WOS:000378195600020)】；

基金：The authors are grateful to the National Key Basic Research Development Program of China (973 Program, 2011CB201304) for financial support.

语种：英文

外文关键词：Nuclear magnetic resonance - Water treatment - Pyrolysis - Hydrogen - Aromatic compounds - Gas chromatography - Lignite - Mass spectrometry - Tar

摘要：Hydrothermal treatment was used to upgrade Inner Mongolia lignite (IML) before pyrolysis. The hydrogen transfer route during hydrothermal treatment of lignite by the isotope tracer method was carried out in an autoclave. Typical experiments of D2O substituted for pure water under four treatment temperatures (180, 220, 260, and 300 degrees C) were also performed. The pyrolysis tar composition was analyzed by H-1 nuclear magnetic resonance (NMR) and gas chromatography and mass spectrometry (GC MS). Four kinds of typical substances were studied in detail in tar from D2O-treated lignite, and the deuterated extent (D1, D2, D3, and D4) was quantitated by selected peaks in mass spectra. The results showed that the deuterium atom was more prone to incorporate into the aromatic ring with respect to aliphatic carbon chains. The values of D2, D3, and D4 were all increased with the increase of the treatment temperature. Toluene and phenol analyses showed that deuterium atoms incorporated into the aromatic ring were distinct by different substituents. The route of hydrogen transfer during hydrothermal treatment was well-investigated by the deuterium tracer method.