Preparation of HZSM-5 catalysts with different ratios of structure directing agents and their effects on the decomposition of exo-tetrahydrodicyclopentadiene under supercritical conditions and coke formation
- Authors
- Lee, Tae Ho; Jeong, Hyunchul; Jeong, Byung Hun; Han, Jung Sik; Gim, Min Yeong; Kim, Do Heui; Kim, Sung Hyun; Lee, Ki Bong
- Issue Date
- 1-5월-2020
- Publisher
- ELSEVIER
- Keywords
- Catalytic endothermic reaction; Exo-Tetrahydrodicyclopentadiene; Zeolite catalyst; Deactivation; Structure directing agent; Coke formation
- Citation
- APPLIED SURFACE SCIENCE, v.511
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED SURFACE SCIENCE
- Volume
- 511
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/56046
- DOI
- 10.1016/j.apsusc.2020.145398
- ISSN
- 0169-4332
- Abstract
- Zeolite catalysts (ZSM-5) were synthesized using different ratios of structure directing agents (SDA) and Si/Al, and the synthesized ZSM-5 samples were used in the endothermic decomposition reaction of exo-tetrahydrodicyclopentadiene (exo-THDCP). The ZSM-5 synthesized with a 6.0:100 SDA/SiO2 ratio and Si/Al ratio of 20 (520/P6.0) showed higher mesoporosity than those of the other synthesized and commercial ZSM-5 catalysts. The decomposition reaction of exo-THDCP using the S20/P6.0 catalyst yielded the highest conversion of 58.4% after 65 min, whereas the commercial catalyst rapidly became deactivated and exhibited only 31.2% conversion, which was the same conversion obtained without the catalyst. The coke analysis results indicated that the ratio of mesopore to micropore volume of the catalyst was a major factor in determining the amount of internal and external coke produced in the catalyst. Moreover, the mesopore/micropore volume ratio affected the composition of soluble coke.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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