1. Facile synthesis Cobalt catalysts for regulating the deoxygenation pathways in producing diesel-like hydrocarbon fuels.
- Author
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Ding, Zhoutian, Zhao, Tong, Zhu, Qing, Liao, Shengyun, Ning, Liangmin, Bi, Yadong, and Chen, Hui
- Subjects
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FOSSIL fuels , *DEOXYGENATION , *COBALT catalysts , *HETEROGENEOUS catalysts , *CATALYST synthesis , *CATALYTIC hydrogenation , *FISCHER-Tropsch process , *DIESEL motor combustion - Abstract
The key technical issues for establishing an economical and advanced deoxygenation process of vegetable oil for producting the diesel-like hydrocarbons are to develop the low-cost non-sulfided heterogeneous catalytic systems with good performance. Herein, we report two facile strategies for preparing Co-based catalysts in an effort to explore the highly efficient heterogeneous catalysts for the deoxygenation of laurate ester. Interestingly, the deoxygenation paths can be regulated by altering the synthesized methods of the Co-based catalysts. For example, the Co-MOF-700 catalyst prepared via pyrolysis of one cobalt metal-organic framework (Co-MOF: [Co(tia)(H 2 O) 2 ] n , tia2− = 5-(1 H -1,2,3-triazol-1-yl) isophthalate) at 700 °C under N 2 atmosphere for 4 h can orient the catalytic hydrogenation of laurate ester towards decarboxylation/decarbonylation with full conversion and 67.6% selectivity of undecane. While, Co/ZSM-5 synthesized through impregnation-reduction method can promote transformation of methyl laurate to dodecane via hydrodeoxygenation path, in which the conversion and selectivity can be up to 100% and79.12%, respectively. Image 1 • Two novel Co-based catalytic systems for efficiently and selectively catalyze the deoxygenation of methyl laurate. • The hydrogenolysis pathways of methyl laurate can be regulated by these catalysts. • Co-MOF-700 favors the decarboxylation/decarbonylation pathway, while Co/ZSM-5 prefers to the hydrodeoxygenation path. • The Co-MOF-700 catalyst shows excellent cycle performance. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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