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Papers by Thanyaporn Pongchan
Materials Research Express
Temperature effect on propylene polymerization behavior over Ziegler-Natta catalyst with differen... more Temperature effect on propylene polymerization behavior over Ziegler-Natta catalyst with different cocatalyst systems To cite this article: Thanyaporn Pongchan et al 2020 Mater. Res. Express 7 025309 View the article online for updates and enhancements. Recent citations Insight into structural distribution of heterogeneous Ziegler-Natta catalyst from non-empirical structure determination Gentoku Takasao et al-Structure-performance relationship of Mg(OEt)2-based Ziegler-Natta catalysts Toru Wada et al
Bulletin of Chemical Reaction Engineering & Catalysis
This study aims to investigate the influences of a combination of cocatalysts including triethyla... more This study aims to investigate the influences of a combination of cocatalysts including triethylaluminum (TEA) and tri-n-octylaluminum (TnOA) for activation of a commercial Ti-based Ziegler-Natta catalyst during ethylene polymerization and ethylene/1-hexene copolymerization on the change in Ti3+ during polymerization. Thus, electron spin resonance (ESR) technique was performed to monitor the change in Ti3+ depending on the catalyst activation by a single and combination of cocatalyst. It revealed that the amount of Ti3+ played a crucial role on both ethylene polymerization and ethylene/1-hexene copolymerization. For ethylene polymerization, the activation with TEA apparently resulted in the highest catalytic activity. The activation with TEA+TnOA combination exhibited a moderate activity, whereas TnOA activation gave the lowest activity. In case of ethylene/1-hexene copolymerization, it revealed that the presence of 1-hexene decreased activity. The effect of different cocatalysts te...
Materials Research Express
Temperature effect on propylene polymerization behavior over Ziegler-Natta catalyst with differen... more Temperature effect on propylene polymerization behavior over Ziegler-Natta catalyst with different cocatalyst systems To cite this article: Thanyaporn Pongchan et al 2020 Mater. Res. Express 7 025309 View the article online for updates and enhancements. Recent citations Insight into structural distribution of heterogeneous Ziegler-Natta catalyst from non-empirical structure determination Gentoku Takasao et al-Structure-performance relationship of Mg(OEt)2-based Ziegler-Natta catalysts Toru Wada et al
Bulletin of Chemical Reaction Engineering & Catalysis
This study aims to investigate the influences of a combination of cocatalysts including triethyla... more This study aims to investigate the influences of a combination of cocatalysts including triethylaluminum (TEA) and tri-n-octylaluminum (TnOA) for activation of a commercial Ti-based Ziegler-Natta catalyst during ethylene polymerization and ethylene/1-hexene copolymerization on the change in Ti3+ during polymerization. Thus, electron spin resonance (ESR) technique was performed to monitor the change in Ti3+ depending on the catalyst activation by a single and combination of cocatalyst. It revealed that the amount of Ti3+ played a crucial role on both ethylene polymerization and ethylene/1-hexene copolymerization. For ethylene polymerization, the activation with TEA apparently resulted in the highest catalytic activity. The activation with TEA+TnOA combination exhibited a moderate activity, whereas TnOA activation gave the lowest activity. In case of ethylene/1-hexene copolymerization, it revealed that the presence of 1-hexene decreased activity. The effect of different cocatalysts te...