Al<sub>2</sub>O<sub>3</sub>孔结构对纳米HZSM-5基催化剂改质FCC汽油性能的影响

赵晓波; 王文举; 郭新闻; 王祥生

Al₂O₃孔结构对纳米HZSM-5基催化剂改质FCC汽油性能的影响

1.
白城师范学院化学学院, 吉林白城 137000;
2.
大连理工大学精细化工国家重点实验室, 辽宁大连 116012

基金项目: 中国石油天然气股份有限公司FCC汽油改质催化剂及工艺研究项目(20090392);吉林省教育厅"十二五"科学技术研究项目(吉教科合字[2012]第364号)。

详细信息

通讯作者:
赵晓波(1972- ),男,吉林白城人,博士,副教授。E-mail:zhaoxb0514@yahoo.com.cn。

中图分类号: O643.36
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- 文章访问数: 1083
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- 被引次数: 0
出版历程
- 收稿日期: 2013-04-08
- 修回日期: 2013-06-07
- 刊出日期: 2013-11-30

Effects of Al₂O₃ pore structure on FCC gasoline upgrading properties of the nanosized HZSM-5 based catalysts

1.
College of Chemistry, Baicheng Normal University, Baicheng 137000, China;
2.
State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China

摘要

摘要: 采用NH₃-TPD、FT-IR、N₂吸附-脱附等手段对两种不同来源的氧化铝样品进行了表征。结果表明,两种Al₂O₃的总酸量及酸强度没有明显差别,酸类型均以Lewis酸为主,其中,Al₂O₃ (b)的平均孔径及孔体积较大。在固定床微型反应装置上考察了以两种Al₂O₃为载体制备的纳米HZSM-5基催化剂改质全馏分FCC汽油的性能。实验结果表明,以大孔Al₂O₃为载体的HZSM-5基催化剂具有较好的降烯烃、芳构化、异构化活性及稳定性。改性纳米HZSM-5负载的LaNiMo催化剂对FCC汽油的300 h评价结果表明,烯烃饱和率为83%,脱硫率为87%,同时维持了油品的辛烷值。
- Al₂O₃载体 /
- 纳米HZSM-5 /
- 催化裂化汽油 /
- 辛烷值
Abstract: Two Al₂O₃ supports were characterized by means of NH₃-TPD, FT-IR and N₂ adsorption-desorption. The characterization results showed that the two Al₂O₃ supports have no significant differences in their total acidity and acidity strength. The acid sites are mainly Lewis ones, but Al₂O₃ (b) has larger average pore diameter and pore volume than Al₂O₃ (a). The influence of the pore structures of the Al₂O₃ supports on the full range FCC gasoline upgrading performance of the nanosized HZSM-5 based catalysts was investigated in a fixed-bed reactor. The results indicated that the HZSM-5 catalyst extruded with macroporous Al₂O₃ exhibited superior activity, stability and performance in reducing olefin content of FCC gasoline. The modified nanosized LaNiMo/HZSM-5 catalyst reduced olefin and sulfur concentration in FCC gasoline by about 83% and 87% within 300 h time on stream, respectively, meanwhile the gasoline octane number was preserved.
- alumina support /
- nanosized HZSM-5 /
- FCC gasoline /
- octane number

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