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추고연,조동우,박종호,안민회,김권일 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
Many catalysts will work, including; nickel, palladium, platinum, cobalt, and iron in hydrotreating which involves temperatures of about 325°C and pressures of about 50 atm. Hydrocracking that breaks longer molecules into smaller ones, involves temperatures over 350°C and pressures up to 200 atm. In both cases, very long residence times (about an hour) are required because of the slow nature of the reactions. In this study, feasibility of catalytic thermal cracking was investigated and compared through thermal decomposition behavior of vacuum residual oils over iron and nickel oxide catalysts which prepared on silicate as a support using glycine-nitrate combustion method and wet impregnation method.
1PA-26 용융손실이 MmNi5 합금의 특성에 미치는 영향
추고연,최정식,김태환,성재석,유윤종 한국공업화학회 1999 한국공업화학회 연구논문 초록집 Vol.1999 No.1
N/A N/A
Inverse Chromatography를 이용한 질소, 이산화탄소, 메탄, 그리고 일산화탄소의 활성탄에 대한 흡착 등온선 계산
추고연,한재찬,박종기 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.1
활성탄(12 ~ 20 mesh, 유림탄소)을 충진한 내경 4.57 mm, 길이 200 mm의 칼럼을 GC의 오븐에 장착하고 30 ~ 60°C의 온도 범위에서 질소, 이산화탄소, 메탄, 그리고 일산화탄소를 각각 0.25 ~ 5.0 cm3 범위 내에서 주입하여 크로마토그램을 얻었다. GC 칼럼의 동적 거동을 모델링하고 이를 이용하여 실험으로 얻어진 크로마토그램을 해석하였으며 크로마토그램을 가장 잘 해석할 수 있는 Langmuir Isotherm 모델의 매개변수를 회귀분석하였다.
효소반응기를 이용한 D-Fructose의 전류법적 정량
추고연,이은숙,윤종훈,이흥락 경북대학교 센서기술연구소 1995 센서技術學術大會論文集 Vol.6 No.1
The amperometric determination method of D-fructose using an enzyme reactor was developed. The enzyme reactor was fabricated by immobilizing enzyme on the glutaraldehyde-activated aminoalkyl silanized controlled-pore glass beads. The principle of measurement is based on the amperometric detection of ferrocyanide ion when D-fructose was oxidized specifically by the enzyme reactor in the presence of ferricyanide ion as an electron acceptor. The optimal experimental conditions were as follows : applied potential, 0.70 volts vs. Ag/AgCl (sat'd KCl) reference electrode; flow rate of carrier solution (3.0x10^(-2) M K_(3)Fe(CN)_(6) + 0.12% Triton X-100 + McIlvaine buffer of pH 5.00), 0.18 μl/min ; injection volume of sample solution, 20 μl, and temperature of enzyme reactor, 20 ℃.
추고연,김권일,박종기 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-
Glutaric acid produced by biological methods is contained in water based systems with various impurities. Herein, counter-current multistage extraction was investigated using 2-butanone for the effective and economical recovery of glutaric acid from the water based systems. 7-stage consecutive extraction was carried out at the mass ratio between aqueous phase(water based system) and solvent phase (2-butanone) of 1:1 and 2:1. In the 7-stage extraction, most of the glutaric acid could be recovered from the aqueous phase, but colourful dye components were extracted simultaneously. In order to increase the purity of glutaric acid, back extraction was performed using water with a mass ratio of 0.5 but the dye components could not be completely removed.