Journal
APPLIED CATALYSIS A-GENERAL
Volume 468, Issue -, Pages 68-74Publisher
ELSEVIER
DOI: 10.1016/j.apcata.2013.08.009
Keywords
Palm oil; Hydrodeoxygenation; Hydrocarbon fuel; Ni/SAPO-11 catalyst; Nano-size
Categories
Funding
- National Basic Research Program of China [2012CB215304]
- Science Foundation of Guangdong Province [S2012040006992]
- Natural Science Foundation of China [51161140331]
- Ministry of Science and Technology of China [2012DFA61080]
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Nano-sized SAPO-11s were hydrothermally synthesized with using di-n-propylamine (DPA) as structure-directing agent in mixed n-tetradecanoamine-n-propanol-H2O medium and the Ni/SAPO-11 catalysts were prepared by incipient wetness impregnation. The catalysts was characterized by XRD, SEM, BET, H-2-TPR, NH3-TPD and TG techniques and their catalytic performance was tested in hydrodeoxygenation (HDO) of palm oil to hydrocarbon fuels. Surfactant n-tetradecanoamine could mediate the minimum SAPO-11 sizes into 20-50 nm. As comparing to the commercial SAPO-11, the nano-sized SAPO-11s presented significantly enlarged surfaces and mesoporous volumes, which offered sufficient space and strong interactions for dispersing Ni. One-step HDO of palm oil demonstrated that the nano-sized SAPO-1 supported Ni catalysts showed the high yield (80%) of liquid hydrocarbons, high isomerization selectivity (80%) and excellent stability due to that the catalyst presented appropriate acidity, higher Ni dispersity, balance of metal (Ni) and acid (SAPO-11) functionalities and fast diffusion for bulky palm oil and products. These promotion effects observed over the nano-sized SAPO-11 supported Ni catalysts indicated the potential application in biorefinery of vegetable oils to hydrocarbon fuels. (C) 2013 Elsevier B.V. All rights reserved.
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