期刊
FUEL PROCESSING TECHNOLOGY
卷 188, 期 -, 页码 153-163出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fuproc.2019.02.017
关键词
CuCo catalyst; Diesel-like hydrocarbons; Stearic acid; Deoxygenation
资金
- National Science Foundation of China [21838006, 21776159, 21576155]
In this study, a novel carbon nanotube (CNT)-supported CuCo catalyst was successfully synthesized by wet impregnation. Experimental and theoretical results on catalytic deoxygenation of stearic acid, a model compound of microalgal bio-oil, revealed that the CuCo catalyst can effectively inhibit cracking reactions and promote production of diesel-like hydrocarbons. CuCo particles in the pores of CNTs were conducive to conversion of stearic acid to long-chain alkanes, featuring a high selectivity of 94.82% at 100% conversion. CuCo catalyst in oxidation state underwent fast in-situ reduction at the beginning of deoxygenation reaction, and its catalytic performance was comparable to that of reduced CuCo catalyst. The improved catalytic conversion of stearic acid to diesel-like hydrocarbons can be achieved at a high ratio of Cu-0/(Cu+ + Cu-0) and lattice Co atoms. In addition, the reduced H-2 pressure and amounts of catalysts show potential for large-scale industrial applications.
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