Journal
BIORESOURCE TECHNOLOGY
Volume 156, Issue -, Pages 1-5Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.01.010
Keywords
Hydrothermal liquefaction; Ce/HZSM-5; Bio-oil; Chlorella pyrenoidosa
Funding
- National High Technology Research and Development Program of China (863 Program) [2012AA051803]
- National Natural Science Foundation of China [51275143]
- Anhui Provincial Natural Science Foundation [11040606Q37, 1408085ME90]
- Fundamental Research Funds for the Central Universities [2012HGBZ0857]
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This paper investigated a novel hydrothermal liquefaction process of Chlorella pyrenoidosa catalyzed by Ce/HZSM-5. The chemical groups and components of the residues of C. pyrenoidosa were analyzed by Fourier transform infrared spectrometry and Gas Chromatograph-Mass Spectrometer. The crystal structure and micro surface topography of C. pyrenoidosa before and after catalytic liquefaction were characterized by X-ray diffraction and Scanning electron microscopy, respectively. The experimental results showed that the catalytic cracking effects of Ce/HZSM-5 were superior to that of HZSM-5 as a liquefaction catalyst of C. pyrenoidosa. Compared with HZSM-5, Ce/HZSM-5 has a significantly enhanced Lewis acid active center, smaller particle size, larger specific surface, and highly dispersed Ce4O7 with trivalent and tetravalent cerium in the zeolite skeleton channel that accelerate the catalytic liquefaction of C. pyrenoidosa. The rare earth modified zeolite Ce/HZSM-5 exhibits good potential and a beneficial nature for the preparation of bio-oil from microalgae with high efficiency. (C) 2014 Elsevier Ltd. All rights reserved.
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