Thermal Stability Improvement of exo-Tetrahydrodicyclopentadiene by 1,2,3,4-Tetrahydroquinoxaline: Mechanism and Kinetics
- Authors
- Park, Sun Hee; Kwon, Cheong Hoon; Kim, Joongyeon; Chun, Jeong Hwan; Chung, Wonkeun; Chun, Byung-Hee; Han, Jeong Sik; Jeong, Byung Hun; Han, Hogyu; Kim, Sung Hyun
- Issue Date
- 18-4월-2013
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF PHYSICAL CHEMISTRY C, v.117, no.15, pp.7399 - 7407
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PHYSICAL CHEMISTRY C
- Volume
- 117
- Number
- 15
- Start Page
- 7399
- End Page
- 7407
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/103493
- DOI
- 10.1021/jp3113599
- ISSN
- 1932-7447
- Abstract
- We investigated the thermal stability of exo-tetrahydrodicyclopentadiene (exo-THDCP, C10H16) in the absence and presence of three additives, 3,4-dihydro-2H-1,4-benzoxazine (Benzox), 1,2,3,4-tetrahydroquinoline (THQ), and 1,2,3,4-tetrahydroquinoxaline (THQox), which act as hydrogen donors (H donors). Conversion of exo-THDCP was slowed in the presence of the H donor. The order of the H-donor effects on the decrease in the conversion of exo-THDCP was Benzox << THQ < THQox. The H-donor-induced decrease in the conversion of exo-THDCP was smaller at higher temperature. In addition, the H-donor-induced decrease in the rate of <C-10 product formation was smaller than that of >= C-10. We proposed the mechanism for the thermal decomposition of exo-THDCP in the presence of the H donor. The proposed mechanism explains the unusual thermal decomposition kinetics of exo-THDCP and H donors: (i) exo-THDCP does not follow first-order kinetics and (ii) THQ and THQox show the S-shaped concentration-time curves. We also proposed the mechanism for H donations by Benzox, THQ, and THQox. The proposed mechanism elucidates that THQox performs faster H donation than THQ and has higher thermal stability than Benzox, which accounts for the more effective thermal stability improvement of exo-THDCP by THQox compared to THQ and Benzox.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
- College of Science > College of Science > 1. Journal Articles
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