• Title/Summary/Keyword: Biochemical engineering

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Thermal Curing Property of Silicone Encapsulant Containing Quantum Dot Surrounded by Various Types of Ligands

  • Lee, Chae Sung;Kim, BeomJong;Jeon, Seongun;Han, Cheul Jong;Hong, Sung-Kyu
    • Bulletin of the Korean Chemical Society
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    • v.34 no.12
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    • pp.3787-3789
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    • 2013
  • In this study, the silicone thermal curing degree of the silicone-encapsulated quantum dot light emission diode was measured using the various types of chemical ligands around quantum dot. It was confirmed that the trioctyl phosphin oxide (TOPO) ligand around the quantum dot was responsible for dispersion of the quantum dot in silicone encapsulant and decline of the thermal curing degree of the silicone encapsulant. Also, it was confirmed that the thermal curing degree of silicone encapsulants containing the steric acid (SA) and the dodecanoic acid (DA) ligands were higher than the one of TOPO ligand.

A Simulation Study of Inter Heat Exchanger Process in SI Cycle Process for Hydrogen Production (수소 생산을 위한 SI Cycle 공정에서의 중간 열교환 공정 모사 연구)

  • Shin, Jae Sun;Cho, Sung Jin;Choi, Suk Hoon;Qasim, Faraz;Lee, Heung N.;Park, Jae Ho;Lee, Won Jae;Lee, Euy Soo;Park, Sang Jin
    • Korean Chemical Engineering Research
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    • v.52 no.4
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    • pp.459-466
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    • 2014
  • SI Cyclic process is one of the thermochemical hydrogen production processes using iodine and sulfur for producing hydrogen molecules from water. VHTR (Very High Temperature Reactor) can be used to supply heat to hydrogen production process, which is a high temperature nuclear reactor. IHX (Intermediate Heat Exchanger) is necessary to transfer heat to hydrogen production process safely without radioactivity. In this study, the strategy for the optimum design of IHX between SI hydrogen process and VHTR is proposed for various operating pressures of the reactor, and the different cooling fluids. Most economical efficiency of IHX is also proposed along with process conditions.