Fe-modified HZSM-5 catalysts for ethanol conversion into light olefins

被引：0
|
作者：
Jiangyin Lu
机构：
来源：
Journal of Natural Gas Chemistry | 2011年 / 04期
基金：
中国国家自然科学基金;
关键词：
bio-ethanol; light olefins; HZSM-5; Fe modification;
D O I：
暂无
中图分类号：
TQ203.2 [催化过程];
学科分类号：
081705 ;
摘要：
A series of Fe/HZSM-5 catalysts with different iron loadings were prepared by impregnation method.Characterization was performed by N2 adsorption-desorption,X-ray diffraction(XRD),NH3 temperature-programmed desorption(NH3-TPD),temperature-programmed reduction (TPR),temperature-programmed oxidation(TPO)and thermogravimetry(TG)analysis.Iron content in the synthesized samples varied from 1.1 wt%to 20 wt%.The obtained samples have been used for ethanol conversion into light olefins.It was found that the amount of strong acidity at 300 -5 50-C on Fe-modified samples was decreased,going with another new acid site appearance at 550- 600-C and that Fe/HZSM-5 catalysts were highly selective towards light olefins,especially the 9FZ sample.In addition,Fe-modified catalysts suppressed the conversion of ethanol to aromatics and paraffins and enhanced their anti-carbon deposit ability.
引用
收藏
页码：423 / 427
页数：5
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