Zhongguo youzhi (Jul 2022)

Pt负载于不同载体对蓖麻籽油加氢催化制备生物航油的影响Catalytic hydrogenation of castor oil to prepare bio-aviation kerosene by Pt loaded on different carriers

  • 马敏, 陈玉保, 庄诗韵, 兰青, 刘莹, 徐锐 MA Min,CHEN Yubao, ZHUANG Shiyun, LAN Qing, LIU Ying, XU Rui

DOI
https://doi.org/10.19902/j.cnki.zgyz.1003-7969.210318
Journal volume & issue
Vol. 47, no. 7
pp. 56 – 60，75

Abstract

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以蓖麻籽油为原料，在Pt负载于不同载体构建的系列催化剂催化作用下，在高温高压反应釜中开展一步加氢催化制备生物航油研究。采用等体积浸渍法制备了Pt基系列催化剂，探究了氢压、反应时间、反应转速、反应温度对催化反应效果的影响。结果表明，加氢催化制备生物航油的最佳反应条件为：氢压4 MPa，反应时间7 h，催化剂Pt/SAPO-11、Pt/ZSM-23反应转速均为1 100 r/min，催化剂Pt/SBA-15反应转速为1 000 r/min，催化剂Pt/SAPO-11和Pt/ZSM-23反应温度均为360 ℃，催化剂Pt/SBA-15反应温度为340 ℃。在最佳条件下，催化剂Pt/SAPO-11的转化率为90.79%，C8～C16烷烃选择性为45.86%，C8～C16烷烃异构率为9.87%；催化剂Pt/ZSM-23的转化率为91.04%，C8～C16烷烃选择性为56.98%，C8～C16烷烃异构率为12.11%；催化剂Pt/SBA-15的转化率为46.26%，C8～C16烷烃选择性为12.85%，C8～C16烷烃异构率为4.83%。实验表明，Pt/ZSM-23的3项指标均优于Pt/SAPO-11和Pt/SBA-15，其更适合用于催化制备生物航油。 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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