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《Acta Sedimentologica Sinica》 2002-04
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Micro-FTIR Spectroscopy of Maceral from Jurassic Coals in Tu-ha Basin

SUN Xu guang 1 CHEN Jian ping 2 WANG Yan bin 3 1(School of Earth and Space Sciences, Peking University, Beijing 100871) 2(Institute of Petroleum Exploration and Development, CNPC, Beijing 100083) 3(Beijing Graduate School, China University of Mining and Technology, Beijing 100083)  
Fourier transformation infrared microspectroscopy (Micro FTIR) is one of effective ways for identifying the chemical structure. Based on the high purity coal macerals separating and concentrating,in this paper, Micro FTIR technique was used to investigate the chemical composition and structures of alginite, sporinite, cutinite, desmocollinite and fusinite from Jurassic coals in Tu ha basin. The results show that the chemical structure of aliginite and sporinite are mainly composed of long aliphatic side chain, and minor amounts of aromatic compounds. Cutinite and desmocollinite are mostly composed of aromatic compounds, in addition to large amount of aliphatic compounds. Whereas fusinite are dominant by aromatic structure. These indicate that aliginite and sporinite are one of the best oil source rocks, with the highest hydrocarbon generation potential; cutinite and desmocollinite are also the better oil and gas source rocks, and have higher hydrocarbon generating potential; fusinite has little hydrocarbon generating potential. Desmocollinite is one of the most amount of macerals in Jurassic coals in Tu ha basin, so it is one of the most important macerals for contribution to oil from coals in Tu ha basin
【Fund】: 国家自然科学基金项目 (批准号 :40 1 0 2 0 1 4 )资助
【CateGory Index】: P618.11
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