Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Yong-Kul Lee"'
Autor:
Yoon-Hyun Hwang, Yong-Kul Lee
Publikováno v:
Journal of Catalysis. 403:131-140
The catalytic activities of the dispersed NixW(1−x)S2 catalysts were investigated for hydrocracking (HCK) of vacuum residue (VR) at 693 K, 9.5 MPa H2 with the same amount of catalyst loading of 0.113 mmol as a metal basis. The catalysts were prepar
Publikováno v:
Journal of Catalysis. 390:117-125
Dispersed MoxW(1−x)S2 catalysts were obtained in situ in the hydrocracking (HCK) of vacuum residue (VR) at 693 K at 9.5 MPa H2 with the same metal loading of 0.113 mmol with varying Mo:W ratios. The intrinsic activities of the catalysts were compar
Autor:
Hyun-Rok Jeong, Yong-Kul Lee
Publikováno v:
Applied Catalysis A: General. 572:90-96
Oil-dispersed WS2 catalysts were prepared in situ using an oil-soluble W precursor of W(CO)6 in the hydrocracking (HCK) of vacuum residue (VR). Smaller size of WS2 catalyst (WS2-DMDS) was also obtained by the addition of dimethyl disulfide (DMDS) wit
Autor:
Ki-Duk Kim, Yong-Kul Lee
Publikováno v:
Journal of Catalysis. 369:111-121
Different morphologies of oil-dispersed MoS2 catalysts were obtained by a ligand stabilization method using Mo(CO)6 as a Mo precursor and trioctylphosphine oxide (TOPO) as a coordinating agent to identify the active site of MoS2 in the hydrocracking
Publikováno v:
Journal of Catalysis. 364:131-140
The effects of Co, Ni, or Mo precursors having different oil solubility and oxidation state on the slurry phase hydrocracking (HCK) of vacuum residue (VR) was investigated at 673 K and 9.5 MPa H2. X-ray diffraction and extended X-ray absorption fine
Publikováno v:
Catalysis Today. 302:108-114
A series of Pt/Nb 2 O 5 catalysts were synthesized at different temperature conditions to investigate metal-support interaction effect on the catalytic activities in the aqueous phase hydrodeoxygenation of 1,6-hexanediol at 523 K and 5.5 MPa. The inc
Autor:
Jisue Moon, Yong-Kul Lee
Publikováno v:
Journal of the Korean Physical Society. 63:1395-1398
This study focused on the elucidation of the Co phase in NaCo/ZnO catalysts with different Co loadings for ethanol steam reforming. The catalysts were applied for ethanol steam reforming with a feed of 20 wt% ethanol in water at 773 K. The characteri
Publikováno v:
The Journal of Physical Chemistry B. 110:4207-4216
Silica-supported manganese oxide catalysts with loadings of 3, 10, 15, and 20 wt % (as MnO2) were characterized with use of X-ray absorption spectroscopy and X-ray diffraction (XRD). The edge positions in the X-ray absorption spectra indicated that t