制备方法对Fe2O3/Al2O3-ZrO2在乙苯脱氢反应中催化性能的影响

张淑娇; 李文英; 李晓红

制备方法对Fe₂O₃/Al₂O₃-ZrO₂在乙苯脱氢反应中催化性能的影响

张淑娇^1,2,
李文英^1,2,,
李晓红^1,2

1.
太原理工大学煤科学与技术教育部重点实验室, 山西太原 030024;
2.
煤科学与技术省部共建国家重点实验室培育基地, 山西太原 030024

基金项目: 山西省归国留学人员科技项目(2012-3);高等学校博士学科点专项科研基金(20121402110016)。

详细信息

通讯作者:
李文英, Tel&Fax:0351-6018453, E-mail:ying@tyut.edu.cn。

中图分类号: O643.3
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出版历程
- 收稿日期: 2014-12-17
- 刊出日期: 2015-04-30

Effect of preparation methods on the catalytic properties of Fe₂O₃/Al₂O₃-ZrO₂ for ethylbenzene dehydrogenation

1.
Key Laboratory of Coal Science and Technology (Taiyuan University of Technology), Ministry of Education and Shanxi Province, Taiyuan 030024, China;
2.
Training Base of Jointly Constructed by Shanxi Province and Ministry of Science and Technology, Taiyuan 030024, China

摘要

摘要: 为提高含铁催化剂的脱氢活性,采用浸渍法和一步沉淀法制备了Fe、Al和Zr含量相同的F4AZ10-imp和F4AZ10-pre催化剂,在550 ℃考察了其在乙苯CO₂氧化脱氢制苯乙烯反应过程中的催化性能,并结合XRD、N₂-吸附、NH₃-TPD、CO₂-TPD和H₂-TPR等表征手段对催化剂进行了分析。结果表明,与浸渍法相比,一步沉淀法制备的催化剂更有利于活性组分Fe₂O₃在催化剂表面的分散及反应物CO₂的转化。
- 制备方法 /
- Fe₂O₃/Al₂O₃-ZrO₂催化剂 /
- 乙苯 /
- 二氧化碳 /
- 脱氢反应
Abstract: To improve the catalytic performance of iron-based catalysts for dehydrogenation of ethylbenzene with CO₂, two samples, F4AZ10-imp and F4AZ10-pre, with the same contents of Fe, Al and Zr were prepared by the impregnation method and one-step precipitation method. The catalytic performance of these two samples for the dehydrogenation of ethylbenzene with CO₂ was tested at 550 ℃. Both the samples are characterized with XRD, NH₃-TPD, CO₂-TPD and H₂-TPR techniques and N₂ sorption experiment. It was shown that the preparation methods had a great effect on the catalytic performance. Compared to the impregnation method, the one-step precipitation method gave a more active catalyst because of a higher dispersion of active Fe₂O₃ on the catalyst surface and a stronger activation of CO₂.
- preparation method /
- Fe₂O₃/Al₂O₃-ZrO₂ catalysts /
- ethylbenzene /
- carbon dioxide /
- dehydrogenation

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参考文献(14)

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