C-2-C-4 light olefins from bioethanol catalyzed by Ce-modified nanocrystalline HZSM-5 zeolite catalysts
发布时间：2019-03-09
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- 论文类型：
- 期刊论文
- 发表时间：
- 2011-08-31
- 发表刊物：
- APPLIED CATALYSIS B-ENVIRONMENTAL
- 收录刊物：
- EI、SCIE
- 文献类型：
- J
- 卷号：
- 107
- 期号：
- 1-2
- 页面范围：
- 68-76
- ISSN号：
- 0926-3373
- 关键字：
- Bioethanol; Transformation; Light olefins; Ce-modified; Nanocrystalline HZSM-5
- 摘要：
- Conversion of bioethanol into bulk chemicals besides ethylene is a promising process in which the stability of catalyst and the selectivity of products are important. In this study, a series of Ce-modified nanocrystalline HZSM-5 catalysts were prepared and their catalytic performance in the conversion of bioethanol into C-2-C-4 light olefins was investigated in a fixed-bed reactor at 400 degrees C under atmospheric pressure. The results show that the stability of catalyst and the distribution of products depend strongly on the content of cerium and the calcination temperature: both cerium content and calcination temperature affect not only the acid properties of the tested catalyst samples but also the composition of cerium species (Ce3+/Ce4+) as revealed by XPS. Among the tested catalyst samples, the catalyst with 5 wt% cerium loading and 520 degrees C calcination temperature exhibits the best stability and selectivity to C-3-C-4 light olefins. (C) 2011 Elsevier B.V. All rights reserved.
- 第一作者
- Bi, Jiandong
- 合写作者
- Wang, Xiangsheng,Guo, Xinwen,Liu, Min,Song, Chunsan
- 通讯作者
- Guo, XW (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, PSU DUT Joint Ctr Energy Res, Dept Catalysis Chem & Engn,Sch Chem Engn, Dalian 116012, Peoples R China.