Journal of the Brazilian Chemical Society | |
Catalytic dehydration of ethanol to ethylene over alkali-Treated HZSM-5 zeolites | |
Ling, Kaicheng1  Sheng, Qingtao1  Taiyuan University of Technology, Taiyuan, P. R. China1  Guo, Shaoqing1  Zhao, Liangfu1  Chinese Academy of Sciences, Taiyuan, P. R. China1  Taiyuan University of Science and Technology, Taiyuan, P. R. China1  | |
关键词: HZSM-5; alkali treatment; ethanol dehydration; desilication; | |
DOI : 10.5935/0103-5053.20140118 | |
学科分类:化学(综合) | |
来源: SciELO | |
【 摘 要 】
The catalytic performance of alkali-treated HZSM-5 catalysts was investigated in a continuous fixed-bed microreactor. The properties of the parent and modified HZSM-5 catalysts were characterized by X-ray diffraction (XRD), inductively coupled plasma atomic emission spectroscopy (ICP-AES), N2 adsorption and temperature programmed desorption of NH3 (NH3-TPD). The results show that the alkali treatment is a suitable method to modify the HZSM-5 catalyst for ethanol dehydration to ethylene. The HZSM-5 catalyst with 0.4 mol L1 NaOH shows high activity and good stability. The improved catalytic performances of alkali-treated catalysts are mainly attributed to the created mesopores and the decreased number of strong acid sites during the alkali treatment.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912050582244ZK.pdf | 422KB | download |