TY - JOUR
T1 - Isomerization of endo- to exo-tetrahydrotricyclopentadiene over alumino-silicate catalysts
AU - Cho, Young Hoon
AU - Kim, Chan Hun
AU - Lee, Seong Ho
AU - Han, Jeongsik
AU - Kwon, Tae Soo
AU - Lee, Kwan Young
N1 - Funding Information:
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) ( NRF-2016M3D1A1021143 ).
Funding Information:
This work was supported by a National Research Foundation of Korea ( NRF ) grant funded by the Korean Government (MSIP) ( NRF-2015R1A2A1A13001856 ).
Publisher Copyright:
© 2018 Elsevier Ltd
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/6/1
Y1 - 2018/6/1
N2 - Isomerization studies have been carried out to improve the physical properties of tetrahydrotricyclopentadiene (THTCPD), which has been attracting attention as a liquid fuel for aviation and military use. However, there have been few studies on heterogeneous catalysts for environmentally friendly process until now. In this study, the isomerization activities over various alumino-silicate catalysts (ZSM-5, MOR, HY, Cu-HY, Al-MCM-41) were evaluated using a batch reactor, and the catalytic properties suitable for the reaction were investigated. The catalytic performances were significantly affected by the microchannel or pore size, acid strength and acid type of each catalyst. N2 adsorption-desorption, NH3-temperature-programmed-desorption and pyridine Fourier-transform-infra-red analyses indicated that the pore size of the catalyst and the acid strength on the catalyst surface affected the conversion rate of endo-THTCPD, and the type of acid on the catalyst surface affected the exo-THTCPD selectivity. The HY catalyst showed the highest yield and productivity among all of the catalysts evaluated. The study of the time-on-stream reaction over the HY catalyst showed that some by-products continued to increase during the reaction time, and there was an optimum reaction time to obtain the highest yield.
AB - Isomerization studies have been carried out to improve the physical properties of tetrahydrotricyclopentadiene (THTCPD), which has been attracting attention as a liquid fuel for aviation and military use. However, there have been few studies on heterogeneous catalysts for environmentally friendly process until now. In this study, the isomerization activities over various alumino-silicate catalysts (ZSM-5, MOR, HY, Cu-HY, Al-MCM-41) were evaluated using a batch reactor, and the catalytic properties suitable for the reaction were investigated. The catalytic performances were significantly affected by the microchannel or pore size, acid strength and acid type of each catalyst. N2 adsorption-desorption, NH3-temperature-programmed-desorption and pyridine Fourier-transform-infra-red analyses indicated that the pore size of the catalyst and the acid strength on the catalyst surface affected the conversion rate of endo-THTCPD, and the type of acid on the catalyst surface affected the exo-THTCPD selectivity. The HY catalyst showed the highest yield and productivity among all of the catalysts evaluated. The study of the time-on-stream reaction over the HY catalyst showed that some by-products continued to increase during the reaction time, and there was an optimum reaction time to obtain the highest yield.
KW - Brönsted acid
KW - HY zeolite
KW - High-energy-density fuel
KW - Isomerization
KW - Tetrahydrotricyclopentadiene
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U2 - 10.1016/j.fuel.2018.01.003
DO - 10.1016/j.fuel.2018.01.003
M3 - Article
AN - SCOPUS:85042462003
SN - 0016-2361
VL - 221
SP - 399
EP - 406
JO - Fuel
JF - Fuel
ER -