| 直馏汽油在纳米ZSM-5上的异构化反应研究 |
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| 引用本文： | 程晓晶,程伟,王雪枫. 直馏汽油在纳米ZSM-5上的异构化反应研究[J]. 石油炼制与化工, 2013, 44(7): 48-52 |
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| 作者姓名： | 程晓晶 程伟 王雪枫 |
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| 作者单位： | 新疆大学石油与天然气精细化工教育部重点实验室 |
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| 基金项目： | 新疆大学石油天然气精细化学品实验室开放课题(XJDX0908-2010-02);新疆大学博士启动基金(BS100112) |
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| 摘 要： | 在固定床反应器中研究了不同反应条件下纳米HZSM-5和微米HZSM-5在直馏汽油异构化反应中的催化性能，并对纳米HZSM-5和微米HZSM-5进行了XRD、NH3–TPD及低温N2吸附等表征。结果表明：纳米HZSM-5粒径小、外表面酸量丰富、扩散路径短，直馏汽油异构化反应性能优于微米HZSM-5，具体表现在环烷烃和芳烃的生成量大。由于纳米颗粒之间的二次孔可以大量容纳积炭，纳米HZSM5的稳定性好；当反应温度为320?360 ℃、质量空速为1 h-1时，纳米HZSM-5的催化性能最佳。
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| 关 键 词： | 纳米HZSM-5 微米HZSM-5 直馏汽油 异构 |
| 收稿时间： | 2012-10-29 |
| 修稿时间： | 2012-11-22 |
ISOMERIZATION OF STRAIGHT RUN GASOLINE OVER NANOSIZED HZSM-5 |
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| Cheng Xiaojing,Cheng Wei,Wang Xuefeng. ISOMERIZATION OF STRAIGHT RUN GASOLINE OVER NANOSIZED HZSM-5[J]. Petroleum Processing and Petrochemicals, 2013, 44(7): 48-52 |
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| Authors: | Cheng Xiaojing Cheng Wei Wang Xuefeng |
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| Affiliation: | (Key Laboratory of Ministry of Education in Fine Chemical of Oil and Gas,Xinjiang University,Urumqi 830046) |
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| Abstract: | This paper introduces the performance of nanosized HZSM-5 and micronsized HZSM-5 in straight-run gasoline isomerization in a fixed bed under reaction conditions. The characterization of two molecular sieves were conducted by XRD, NH3–TPD and BET analysis. It is found that the nanosized HZSM-5 is more suitable for catalytic isomerization of straight-run gasoline than micronsized HZSM-5. This is because nanosized HZSM-5 has more external acid sites which favor the cyclization of paraffin and riches in secondary pores allowing more coke deposition. At 320-360 ℃ and WHSV of 1 h-1, nanosized HZSM-5 shows the best catalytic performance. Nanosized HZSM-5 can be used as an efficient catalyst for straight-run gasoline isomerization. |
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