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이온성 액체 촉매를 이용한 Tricyclopentadiene 합성에 관한 연구
김수정 ( Su Jung Kim ),한정식 ( Jeongsik Han ),전종기 ( Jong Ki Jeon ),임진형 ( Jin Heong Yim ) 한국공업화학회 2015 공업화학 Vol.26 No.5
Tricyclopentadiene (TCPD) as a next generation high density fuel was synthesized by Diels-Alder oligomerization reaction of DCPD. TCPD was prepared by ionic liquid (IL) catalysts with combination of cationic and anionic precursors. Two kinds of anionic precursors such as copper(Ⅰ) chloride (CuCl) and iron(Ⅲ) chloride (FeCl3) and cationic precursors such as triethylamine hydrochloride (TEAC) and 1-butyl-3-methylimidazolium chloride (BMIC) were used. The preparation of TCPD using IL catalyst was superior to that using Diels-Alder reaction in terms of DCPD conversion and TCPD yield. In addition, TCPD yield was correlated with Lewis acidity by changing the ratio of anionic and cationic precursors. The TCPD yield was higher when using CuCl as anionic precursor than that of using FeCl3. Control of Lewis acidity by changing the molar ratio of anionic and cationic precursors could further improve TCPD yield as well.
고밀도 연료인 Binor-S형 Norbornadiene Dimer의 제조 및 특성 고찰
정병훈(Byung Hun Jeong),한정식(JeongSik Han),고승원(Seung Won Ko) 한국추진공학회 2013 한국추진공학회 학술대회논문집 Vol.2013 No.12
높은 밀도와 발열량의 장점으로 인해 Binor-S 형 노르보르나디엔 이량체의 제조를 연구하였다. 노르보르나디엔 이량체 중 하나인 Binor-S 형은 코발트 화합물 촉매사용에 의해 선택적으로 합성된다고 알려져 있으나 자세한 조건은 알려지지 않았다. 본 논문에서는 촉매의 종류와 반응변수 들의 실험을 통하여 Binor-S형 NBD 이량체를 99%의 수율로 얻을 수 있는 최적 조건을 개발하였으며, 최종적으로 여러 가지 노르보르나디엔 이량체 종류별로 물리적 특성을 비교하였다. Due to the advantage of high density and combustion heat, Binor-S type norbornadiene dimer have been researched. Binor-S NBDD, one of the 14 types norbornadiene dimer, could be synthesized selectively by use of cobalt compound catalyst, but detailed conditions were unknown. In this research, through the experiment on catalyst type and reaction parameters, optimum reaction condition was developed to acquire 99% yield of Binor-S type NBDD. Finally, physical properties of various norbornadiene dimers were tabulated and compared.
강샛별(Saetbyeol Kang),한정식(Jeongsik Han),정병훈(Byunghun Jeong) 한국추진공학회 2018 한국추진공학회 학술대회논문집 Vol.2018 No.5
본 연구에서는 향후 개발될 바이오 항공유의 특성을 비교 분석하기 위한 기초 자료를 확보하기 위해, 여러 가지 항공유의 점화지연시간을 측정하여 결과를 비교하였다. 석유계 항공유의 경우에는 590℃, 55bar 조건에서 exo-THDCP의 점화지연시간이 4.92ms로 측정되어 Jet A-1의 측정값인 1.44ms보다 3.42배 긴 것을 확인하였다. 또한 외국 바이오 항공유의 경우에는 Sasol사의 11POSF7629가 1.18ms로 점화지연시간이 가장 길게 측정되었고, UOP사의 10POSF6308은 1.06ms, 12POSF7720는 1.07ms, 그리고 Sasol사의 07POSF5172는 1.05ms로 모두 비슷하게 측정되었다. In this study, to obtain basic data for comparative analysis of the properties of bio aviation fuel to be developed in the future, the ignition delay time of various aviation fuels was measured and compared. In the case of petroleum-based aviation fuel, the ignition delay time of exo-THDCP was 4.92ms, which was 3.42 times longer than 1.44ms of Jet A-1 at 590 ℃ / 55bar. In the case of foreign bio aviation fuel, the ignition delay time of 11POSF7629 was the longest measured as 1.18ms, and the ignition delay time of 10POSF6308 (1.06ms), 12POSF7720 (1.07ms), and 07POSF5172 (1.05ms) were measured similarly.
합성연료 제조를 위한 GTL(Gas To Liquid) 기술동향
정병훈(Byunghun Jeong),한정식(Jeongsik Han) 한국추진공학회 2011 한국추진공학회 학술대회논문집 Vol.2011 No.11
석유자원 고갈, 높은 원유가격 문제 그리고 온실가스인 CO2 에 의한 지구온난화 문제 때문에 바이오매스를 이용한 GTL(Gas To Liquid) 공정으로 제조하는 청정 합성연료에 대한 관심이 크게 증가하고 있다. 본 논문에서는 GTL 기술의 3가지 핵심인 천연가스 개질반응, 피셔-트롭스 합성 그리고 물성조절 공정에 관한 기술을 설명하고 각국의 개발현황을 비교하였다. Due to the depletion of fossil fuel, high oil price and global warming issue by green house gas such as CO2, clean synthetic fuel technologies using biomass, especially GTL(Gas To Liquid) technology, have been greatly attracted. This paper has examined and compared the worldwide technologies trend of natural gas reforming reaction, F-T(Fisher-Tropsch) synthesis and upgrading process which are three backbones of GTL technology.
층류 유동반응기를 이용한 프로핀 반응 실험 및 축소 메커니즘의 검증
조천현(Cheon Hyeon Cho),한가람(Ka Ram Han),손채훈(Chae Hoon Sohn),한정식(Jeongsik Han) 한국연소학회 2019 한국연소학회지 Vol.24 No.3
Flow reactors are classified into laminar flow, turbulent flow and jet-stirred reactors depending on flow condition. Laminar flow reactor is a device that measures oxidation process of gaseous fuel and vaporized liquid fuels. Propene oxidation process was observed in a laminar flow reactor with a specified residence time at 6 atm, 968 K, and equivalence ratio of 0.71 and compared with numerical simulations. The Aramco 2.0 chemistry was adopted as a kinetic mechanism which includes 493 species and about 2,700 reaction steps. Oxygen, carbon monoxide, and carbon dioxide concentrations were measured. Numerical results with a time shift of 0.216 s show a good agreement with experimental results. And, a reduced kinetic mechanism was generated and validated based on the Aramco 2.0. The reaction steps are reduced by 23%.
진유인(Yu-In Jin),이형주(Hyung Ju Lee),한정식(Jeongsik Han) 한국추진공학회 2019 한국추진공학회지 Vol.23 No.3
The laminar burning velocity of endothermic fuel surrogates is measured in this study, in order to investigate combustion characteristics of aviation fuel after being used as coolant in an active cooling system of a hypersonic flight vehicle. A Bunsen burner was manufactured such that the laminar burning velocity can be taken for two types of surrogate fuels, SF-1 and 2. The results showed that the burning velocity of surrogate fuels was faster at high equivalence ratio conditions than that of the reference fuel (RF), and specifically, the velocity of SF-1 had the maximum value at the highest equivalence ratio compared with those of SF-2 and RF.
이온성 액체가 담지된 메조포로스 실리카 촉매를 이용한 Tricyclopentadiene 합성
김수정 ( Su Jung Kim ),전종기 ( Jong Ki Jeon ),한정식 ( Jeongsik Han ),임진형 ( Jin Heong Yim ) 한국공업화학회 2016 공업화학 Vol.27 No.2
Tricyclopentadiene (TCPD) is one of the important precursors for making tetrahydrotricyclopentadiene, which is well known as a next-generation fuel with high energy density. In this study, TCPD was obtained by polymerization reaction of dicyclopentadiene (DCPD) using an ionic liquid (IL) supported mesoporous silica catalysts. ILs were supported to two kinds of mesoporous silica catalysts with different pore sizes such as MCM-41 and SBA-15. Four different ILs were supported to mesoporous silicas using anionic precursors such as CuCl or FeCl3 and cationic precursors such as triethylamine hydrochloride or 1-butyl-3-methylimidazolium chloride. We proved that IL supported mesoporous silicas showed better catalytic performance than those of using non-supported prestine IL in the aspect of TCPD yield and DCPD conversion. Among four kinds of IL supported mesoporous silica catalysts, CuCl-based IL supported MCM-41 system showed the highest TCPD yield.