Oil Shale, 2007, Vol. 24, No. 3, pp. 423–433

 

CHEMICAL COMPOSITION OF CARBON  DISULFIDE-EXTRACTABLE FRACTION FROM OIL SHALES OF THREE CHINESE DEPOSITS

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JING-PEI CAO, ZHI-MIN ZONG, XIAO-YAN ZHAO, GUANG-FENG LIU, JIE MOU, FENG WANG, YAO-GUO HUANG, GUO-JIANG ZHOU, HAO-QUAN HU, XIAN-YONG WEI

 

Understanding chemical composition of organic matter in oil shales in detail is of importance to both organic geochemistry and efficient utilization of oil shales. Because of low boiling point and good penetrability, carbon disulfide was used for extraction of organic matter from solid fossils. In the present study, oil shale samples from Fushun, Longkou and Huadian deposits of China were extracted with carbon disulfide, and extraction solutions were analyzed with gas chromatography and gas chromatography/mass spectro­metry. The results show that alkanes, including a series of normal alkanes, isoprenoids and cyclanes, are predominant in extraction solutions. Other compounds detected in the extraction solutions are alkenes, alkylated arenes and organo-oxygen compounds. Normal alkanes are predominant in the carbon disulfide-extractable fraction (CDEF) from Huadian oil shale. CDEF from Longkou oil shale contains much more alkanes than those from other two oil shales, whereas CDEF from Fushun oil shale contains more cyclanes than those from other two oil shale deposits.

 

REFERENCES

 

1.        Russell, P. L. Oil shales of the world; their origin, occurrence and exploitation. – Oxford, 1990.

2.        Dyni, J. R. Geology and resources of some world oil-shale deposits // Oil Shale. 2003. Vol. 20, No. 3. P. 193–252.

3.        Bondar, E., Koel, M. Application of supercritical fluid extraction to organic geochemical studies of oil shales // Fuel. 1998. Vol. 77, No. 3. P. 211–213.

4.        Bondar, E., Koel, M. Liiv, M. A comparative study of the composition of biomarkers in SFE and solvent extracts of oil shales // Fuel. 1998. Vol. 77, No. 3. P. 215–218.

5.        Platonov, V. V., Proskuryakov, V. A., Glybina, A. V. Chemical composition of the organic matter of oil shale (Kerogen-70) from Leningrad Oblast (Benzene-Ethanol extract) // Russ. J. Appl. Chem. 2002. Vol. 75, No. 3. P. 495–498.
doi:10.1023/A:1016157713545

6.        Anabtawi, M. Z., Uysal, B. Z. Extraction of El-Lajjun oil shale // Sep. Sci. Technol. 1995. Vol. 30, No. 17. P. 3363–3373.

7.        Vandegrift, G. F., Winans, R. E., Scott, R. G., et al. Quantitative study of the carboxylic acids in Green River oil shale bitumen // Fuel. 1980. Vol. 59, No. 9. P. 627–633.

8.        Blanco, C. G., Prado, J. G., Guillen, M. D., et al. Preliminary results of extraction experiments in an oil shale // Org. Geochem. 1992. Vol. 18, No. 3. P. 313–316.
doi:10.1016/0146-6380(92)90072-6

9.        Pais, R., Klesment, I., Pobul, L. Hydrocarbons and oxygen compounds in the bitumen of schist-kukersite // Proc. Estonian Acad. Sci. Chem. 1979. Vol. 28, No. 3. P. 182–190 [in Russian].

10.     Klesment, I., Kuusik, M., Pobul, L. Characterization of bitumens from Borov Dol oil shale (Bulgaria) // Proc. Estonian Acad. Sci. Chem. 1981. Vol. 30, No. 2. P. 69–74 [in Russian].

11.     Pobul, L., Klesment, I., Kuusik, M. Study of the composition and genesis of arpathian menilitic oil shales. I. Composition of bitumen // Proc. Estonian Acad. Sci. Chem. 1981. Vol. 30, No. 4. P. 259–266 [in Russian].

12.     Pobul, L., Klesment, I., Kuusik, M. Study of the organic matter of Kenderlyk oil shales. 1. Composition of bitumens and general characterization of oil shales // Proc. Estonian Acad. Sci. Chem. 1982. Vol. 31, No. 1. P. 25–32 [in Russian].

13.     Adam, P., Schaeffer, P., Albrecht, P. C₄₀ monoaromatic lycopane derivatives as indicators of the contribution of the alga Botryococcus braunii race L to the organic matter of Messel oil shale (Eocene. Germany) // Org. Geochem. 2006. Vol. 37, No. 5. P. 584–596.
doi:10.1016/j.orggeochem.2006.01.001

14.     Cao, J. P., Zong, Z. M., Zhao, X. Y., et al. Identification of octathiocane, organo­nitrogens, and organosulfurs in Tongchuan shale // Energy Fuels. 2007. Vol. 21, No. 2. DOI: 10.1021/ef0602776.

15.     Wang, X. H., Xiong, Y. C., Gu, X. H., et al. GC/MS analysis of CS₂-extracts from several bituminous coals // J. Fuel. Chem. Technol. 2002. Vol. 30, No. 1. P. 72–77 [in Chinese].

16.     Wei, X. Y., Wang, X. H., Zong, Z. M.,et al. Identification of organochlorines and organobromines in coals // Fuel. 2004. Vol. 83, No. 17–18. P. 2435–2438.

17.     Wang, X. H., Wei, X. Y. Study of constituents of fractionated extraction from Datong coal // J. Chin. Univ. Min. Technol. 2005. Vol. 15, No. 4. P. 299–304.

18.     Zhao, X. Y., Zong, Z. M., Cao, J. P., et al. Difference in chemical composition of carbon disulfide-extractable fraction between vitrinite and inertinite from Shenfu-Dongsheng and Pingshuo coals // Fuel. 2007 [in press].

        doi:10.1016/j.fuel.2007.02.021.

19.     Wei, X. Y., Ni, Z. H., Xiong, Y. C., et al. Pd/C-Catalyzed release of organo­nitrogen compounds from bituminous coals // Energy Fuels. 2002. Vol. 16, No. 2. P. 527–528.
doi:10.1021/ef010219e

20.     Liu, Z. X., Liu, Z. C., Zong, Z. M., et al. GC/MS analysis of water-soluble products from the mild oxidation of Longkou brown coal with H₂O₂ // Energy Fuels. 2003. Vol. 17, No. 2. P. 424–426.
doi:10.1021/ef020071e

21.     Sun, L. B., Zong, Z. M., Kou, J. H., et al. Thermal release and catalytic removal of organicSulfur compounds from Upper Freeport coal // Energy Fuels. 2005. Vol. 19, No. 2. P. 339–342.
doi:10.1021/ef0498059

22.     Wang, Z. R., Ma, S. P., Wang, J. L. Organic geochemistry and origin of oil from continental deposits. – Beijing, 1986 [in Chinese].