Insight into the structural features of organic species in Fushun oil shale via thermal dissolution

doi:10.1016/j.cjche.2018.05.013

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (10): 2162-2168.DOI: 10.1016/j.cjche.2018.05.013

• Energy, Resources and Environmental Technology • 上一篇下一篇

Insight into the structural features of organic species in Fushun oil shale via thermal dissolution

Shengkang Wang¹, Xianyong Wei^1,2, Zhimin Zong¹

1 Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou 221116, China;
2 State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China

收稿日期:2017-12-16 修回日期:2018-05-02 出版日期:2018-10-28 发布日期:2018-11-14
通讯作者: Xianyong Wei,E-mail address:wei_xianyong@163.com
基金资助:
Supported by the Fundamental Research Funds for the Central Universities (2017BSCXB27) and the Research and the Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX17_1507).

Insight into the structural features of organic species in Fushun oil shale via thermal dissolution

Shengkang Wang¹, Xianyong Wei^1,2, Zhimin Zong¹

1 Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou 221116, China;
2 State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China

Received:2017-12-16 Revised:2018-05-02 Online:2018-10-28 Published:2018-11-14
Contact: Xianyong Wei,E-mail address:wei_xianyong@163.com
Supported by:
Supported by the Fundamental Research Funds for the Central Universities (2017BSCXB27) and the Research and the Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX17_1507).

摘要/Abstract

摘要： Fushun oil shale (FOS) was subjected to thermal dissolution (TD) under different conditions. The results show that the optimal solvent, temperature, time, and ratio of solvent to FOS are ethanol, 300℃, 2 h, and 5 ml·g^-1, respectively and the corresponding yield of the soluble portion (SP) is 32.2% (daf), which is much higher than the oil content of FOS (ca. 6%), suggesting that TD in ethanol is an excellent way to extract organics from FOS. According to 3 direct analyses, aliphatic moieties in FOS are the most abundant followed by C-O-containing moieties and each cluster in FOS has 3 conjugated aromatic rings on average with fewer substituents. According to the analysis with a gas chromatograph/mass spectrometer, alkanes are predominant in all the SPs. A number of alkenes were identified in the SPs from the TD, while none of the alkenes were detected in acetone-SP obtained at room temperature, implying that the TD can destroy the π-π and intertwining interactions between alkenes and macromolecular structures in FOS. Moreover, a small amount of alkyl-substituted phenols and alkoxysubstituted phenols were detected in ethanol-SP from the TD, which could be the products from ethanolyzing the macromolecular moiety of FOS.

关键词: Oil shale, Structural feature, Thermal dissolution

Abstract: Fushun oil shale (FOS) was subjected to thermal dissolution (TD) under different conditions. The results show that the optimal solvent, temperature, time, and ratio of solvent to FOS are ethanol, 300℃, 2 h, and 5 ml·g^-1, respectively and the corresponding yield of the soluble portion (SP) is 32.2% (daf), which is much higher than the oil content of FOS (ca. 6%), suggesting that TD in ethanol is an excellent way to extract organics from FOS. According to 3 direct analyses, aliphatic moieties in FOS are the most abundant followed by C-O-containing moieties and each cluster in FOS has 3 conjugated aromatic rings on average with fewer substituents. According to the analysis with a gas chromatograph/mass spectrometer, alkanes are predominant in all the SPs. A number of alkenes were identified in the SPs from the TD, while none of the alkenes were detected in acetone-SP obtained at room temperature, implying that the TD can destroy the π-π and intertwining interactions between alkenes and macromolecular structures in FOS. Moreover, a small amount of alkyl-substituted phenols and alkoxysubstituted phenols were detected in ethanol-SP from the TD, which could be the products from ethanolyzing the macromolecular moiety of FOS.

Key words: Oil shale, Structural feature, Thermal dissolution

Shengkang Wang, Xianyong Wei, Zhimin Zong. Insight into the structural features of organic species in Fushun oil shale via thermal dissolution[J]. Chinese Journal of Chemical Engineering, 2018, 26(10): 2162-2168.

Shengkang Wang, Xianyong Wei, Zhimin Zong. Insight into the structural features of organic species in Fushun oil shale via thermal dissolution[J]. Chin.J.Chem.Eng., 2018, 26(10): 2162-2168.

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Insight into the structural features of organic species in Fushun oil shale via thermal dissolution

Insight into the structural features of organic species in Fushun oil shale via thermal dissolution

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