Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Yong-Kul Lee"'
Publikováno v:
Korean Journal of Chemical Engineering. 38:1179-1187
CoMoS2/Al2O3 catalysts prepared by adding citric acid (CA) were synthesized and applied tor hydrodesulfurization (HDS) of fluid-catalytic cracking decant-oils (FCC-DO). The HDS of FCC-DO was carried out in an autoclave batch reactor at 653 K and 9.4
Autor:
Youngtae Park, Kihyun Shin, Changsoo Lee, Sang-Yeon Lee, Yong-Kul Lee, Chang-Hee Kim, Hyun-Seok Cho, Graeme Henkelman, Hyuck Mo Lee
Publikováno v:
Chemical Engineering Journal. 446:136966
Autor:
Han-Beyol Park, Yong-Kul Lee
Publikováno v:
Fuel. 239:1265-1273
In order to design a suitable catalyst for hydrocracking (HCK) of vacuum residue (VR), a series of NiMoS/γ-Al2O3 catalysts were prepared with varying Mo loading amounts, Ni addition, P addition, and porosity of γ-Al2O3 support, and were applied for
Publikováno v:
Fuel. 222:105-113
The effects of tetralin as an H-donor on the reactivity of asphaltenes in a petroleum pitch were investigated under thermal cracking or catalytic hydrocracking conditions at 693 K and 10.0 MPa N2 or H2. Reaction temperatures, pressures, and tetralin
Publikováno v:
Chemical Engineering Journal. 314:1-10
The effects of various organic solvents having different H-donor index, asphaltene solubility, and alkyl-substitution on the upgrading of vacuum residue (VR) were investigated under thermal cracking or catalytic hydrocracking conditions at 673 K and
Publikováno v:
Fuel. 263:116620
The asphaltene hydrocracking (HCK) was carried out at 693 K and 11.0 MPa H2 to examine the phase transformation of V species contained in the asphaltene and the catalytic activity of the resulting V compounds in the HCK. The V K-edge X-ray absorption
Autor:
So Jin Ahn, Yong-Kul Lee
Publikováno v:
Journal of Industrial and Engineering Chemistry. 19:2060-2063
The synthesis of 2-hydroxy-6-naphthoic acid (2,6-HNA) from carboxylation of alkali-naphthoxide was studied with varying alkali cation types and reaction conditions such as reactant concentration, reaction time, temperature, and pressure. The product
Publikováno v:
Journal of Industrial and Engineering Chemistry. 19:2072-2078
Six-carbon containing model compounds of 1-hexanol, 1,6-hexanediol and sorbitol for the reforming were employed to study the effect of hydroxyl functional group on the thermodynamic equilibrium product distribution in a wide range of conditions of te
Autor:
Yong-Kul Lee, Gwang-Nam Yun
Publikováno v:
Fuel Processing Technology. 114:1-5
The amphiphilic phosphotungstic acid catalyst (A-PTA) was prepared with quaternary ammonium salt to apply for the oxidative desulfurization (ODS) of light cycle oil (LCO), resulting in high activity of the ODS conversion of 95%, at H 2 O 2 /S ratio o
Publikováno v:
Energy & Fuels. 19:353-364
The kinetics for the initial stage of the hydrodesulfurization (HDS) of 4,6-dimethyldibenzothiophene (4,6-DMDBT) and dibenzothiophene (DBT) were comparatively examined over NiMo and CoMo sulfide catalysts and newly developed nickel phosphide catalyst