Comparison of catalytic consequences of ionic liquid-templated ZSM-22 and ZSM-5 zeolites in propene dimerization
- Authors
- Li, Xuemin; Pan, Tao; Choi, Jungkyu; Park, Heon; Wu, Zhijie; Yip, Alex C. K.
- Issue Date
- 5월-2022
- Publisher
- ELSEVIER
- Keywords
- ZSM-22; ZSM-5; Acid catalysis; Propene dimerization; Zeolite
- Citation
- MICROPOROUS AND MESOPOROUS MATERIALS, v.337
- Indexed
- SCIE
SCOPUS
- Journal Title
- MICROPOROUS AND MESOPOROUS MATERIALS
- Volume
- 337
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/141838
- DOI
- 10.1016/j.micromeso.2022.111941
- ISSN
- 1387-1811
- Abstract
- The ionic liquid-templated TON- and MFI-type zeolites having 10-membered rings were synthesized and their catalytic performances on propene dimerization were studied. The comparable acid site strength among TON- or MFI-type zeolites accounted for the nearly identical propene dimerization turnover rates despite their different Si/Al ratios. At the low propene conversion (<5%), the TON- and MFI-type zeolites (with a Si/Al ratio of 30-120) obtained a dimer selectivity of over 70% and less than 42%, respectively. The different channel structures and acid properties of zeolite were responsible for the different catalytic selectivity in TON- and MFI-type zeolites. Compared to MFI zeolite, TON with a smaller void size was much more suitable for stabilizing the transition states and intermediates for dimers under the reaction conditions. In addition, a three-stage and a three-in-one dimerization reaction pathways were proposed for the ZSM-22 and ZSM-5 zeolites, respectively.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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