Citation: LIU Yang, HE Kun, LI Xian-qing, HAN Rui, WANG Zhe, XU Hong-wei. Performance of various catalysts in hydropyrolysis of organic matters and reaction mechanisms[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(1): 53-59. shu

Performance of various catalysts in hydropyrolysis of organic matters and reaction mechanisms

LIU Yang ^1,2,3 ,
HE Kun ³ ,
LI Xian-qing ^1,2,*,, ,
HAN Rui ² ,
WANG Zhe ^1,2 ,
XU Hong-wei ^1,2

1.
State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, China
2.
College of Geoscience and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
3.
Key Laboratory of Petroleum Geochemistry, China National Petroleum Corporation, Beijing 100083, China

Corresponding author: LI Xian-qing, lixq@cumtb.edu.cn
Received Date: 28 July 2015
Revised Date: 9 November 2015

Fund Project: The project was supported by the National Natural Science Foundation of China 41572125National Special Fund for Research in the Public Interest 201311022Important National Science & Technology Specific Projects of China during the 12th Five-year Plan Period 2011ZX05007-002Independent Scientific Research Project of State Key Lab-oratory of Coal Resources and Safe Mining SKLCRSM10B04Important National Science & Technology Specific Projects of China during the 12th Five-year Plan Period 2011ZX05033-004

Figures(6)

The hydropyrolysis of organic matters was comparatively conducted over various catalysts including ZnCl₂, NiCl₂, Fe₂O₃, NaY and MoS₂ and the reaction mechanisms over different catalysts were then investigated. The results indicate that the yield and composition of liquid products from hydropyrolysis are related to the type of catalyst, though various catalysts do not have significant difference in the product biomarker parameters. Meanwhile, for the organic matters with different maturities and types, various catalysts are also quite different in their actual performance. The element analysis, infrared spectra and X-ray diffractograms of the solid residues illustrate that various catalysts are obviously different in the catalytic reaction mechanism. In comparison with NiCl₂, mass transfer is an important factor in the ZnCl₂ system, besides the catalytic cracking and catalytic hydrogenation. With Fe₂O₃ as the catalyst, the formation of H free radical by the adsorption of H₂ at the surface active O sites may promote the hydrogenation of organic matters. MoS₂ as the catalyst may involve two mechanisms, viz., the hydrogenation over transition metal Mo and the initiation of free radicals from H₂S intermediates.
- organic matters,
- hydropyrolysis,
- biomarkers,
- catalytic reaction mechanism
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