Fluoride-mediated nano-sized high-silica ZSM-5 as an ultrastable catalyst for methanol conversion to propylene
发表时间：2019-03-12
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- 论文类型：
- 期刊论文
- 第一作者：
- Li, Junjie
- 通讯作者：
- Liu, M; Song, CS (reprint author), Dalian Univ Technol, PSU DUT Joint Ctr Energy Res, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Liaoning, Peoples R China.
- 合写作者：
- Liu, Min,Guo, Xinwen,Dai, Chengyi,Song, Chunshan
- 发表时间：
- 2018-07-01
- 发表刊物：
- JOURNAL OF ENERGY CHEMISTRY
- 收录刊物：
- SCIE
- 文献类型：
- J
- 卷号：
- 27
- 期号：
- 4
- 页面范围：
- 1225-1230
- ISSN号：
- 2095-4956
- 关键字：
- Fluoride route; Nano-sized; High Si/Al; Structural defects; MTP
- 摘要：
- Fluoride mediated nano-sized ZSM-5 (ZSM-5-F) with a high Si/Al ratio of 181 was fabricated using a seed-induction method and evaluated the catalysis of the methanol to propylene (MTP) reaction. High propylene selectivity (45%) was similar to ZSM-5-OH synthesized via a hydroxide route. However, ZSM5-F showed much longer lifetime (305 h) compared with ZSM-5-OH (157 h) in spite of similar crystal size and aluminum content. Characterization by NH3-TPD, Py-IR, OH-IR, SEM, TG-DTA, XRD and H-1 MAS NMR techniques indicated that the enhanced catalytic performance of ZSM-5-F is attributed to the fewer structural defects in the form of internal silanol groups and silanol nests. (C) 2017 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
- 是否译文：
- 否
