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| Catalytic hydrogenation of castor oil to prepare bio-aviation kerosene by Pt loaded on different carriers |
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| KeyWord:bio-aviation kerosene castor oil carrier catalyst one step hydrogenation |
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| Abstract: |
| Using castor oil as a raw material, under the action of a series of catalysts constructed with Pt loaded on different carriers, the one step catalytic hydrogenation to prepare bio-aviation kerosene in a high-temperature and high-pressure reactor was researched. The Pt-based series catalysts were prepared by equal volume impregnation. The influences of hydrogen pressure, reaction temperature, reaction time, and stirring speed on the catalytic effect were explored. The results showed that the optimal preparation conditions of bio-aviation kerosene were obtained as follows: hydrogen pressure 4 MPa, reaction time 7 h, stirring speed 1 100 r/min for Pt/SAPO-11 and Pt/ZSM-23, 1 000 r/min for Pt/SBA-15, reaction temperature 360℃ for Pt/SAPO-11 and Pt/ZSM-23, and 340℃ for Pt/SBA-15.Under the optimal conditions, the conversion rate, selectivity of C8-C16 alkanes and isomerization rate of C8-C16 alkanes of Pt/SAPO-11 were 90.79%, 45.86% and 9.87% respectively; the conversion rate, selectivity of C8-C16 alkanes and isomerization rate of C8-C16 alkanes of Pt/ZSM-23 were 91.04%, 56.98%, and 12.11%, respectively; the conversion rate,selectivity of C8-C16 alkanes and isomerization rate of C8-C16 alkanes of Pt/SBA-15 were 46.26%, 12.85% and 4.83%, respectively.The research indicated that the three indexes of Pt/ZSM-23 were superior to Pt/SAPO-11 and Pt/SBA-15, and it was more suitable for the preparation of bio-aviation kerosene. |
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