Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Hyun-Sik Hahm"'
Publikováno v:
Research on Chemical Intermediates. 42:109-121
Dimethyl carbonate (DMC) was synthesized via transesterification of ethylene carbonate and methanol with ionic liquid catalysts. For this reaction, 1,4-diazobicyclo[2.2.2]octane (DABCO), [Choline]OH, and [BMIM]Cl were used as a homogeneous catalyst,
Publikováno v:
Volume: 39, Issue: 1 159-168
Turkish Journal of Chemistry
Turkish Journal of Chemistry
This study aimed to develop a photocatalyst that responds to visible light. For the preparation of visible light sensitive photocatalysts, N was doped into TiO2 (N-TiO2). To inhibit the recombination of excited electrons and holes, transition metals
Publikováno v:
Journal of the Korean Oil Chemists' Society. 31:446-452
Publikováno v:
Korean Chemical Engineering Research. 50:41-49
This study was aimed at the development of catalysts for the direct methanol synthesis by partial oxidation of methane. Mo-Bi-V-Al mixed oxide catalysts were prepared and characterized and used in the direct methanol synthesis reaction. The catalysts
Publikováno v:
Research on Chemical Intermediates. 34:793-801
The capability of metal (Cu, Zn)-pillared ilerites and metal oxide (CuO, ZnO)-impregnated metal-pillared ilerites for direct synthesis of dimethyl ether (DME) from synthesis gas was explored. The metal-pillared ilerites were synthesized and character
Publikováno v:
Korean Journal of Chemical Engineering. 25:466-470
The effect of pressure on the direct synthesis of dimethyl ether (DME) from syngas over metal (Cu, Zn) pillared ilerites and metal (Cu, Zn) impregnated metal-pillared ilerites was explored. The prepared catalysts were char- acterized by XRD, BET, ICP
Publikováno v:
Materials Science Forum. :30-33
Catalytic decomposition of methane is an environmentally attractive approach to CO2-free hydrogen production. The decomposition of methane over carbon nanofibers was carried out in a fixed bed flow reactor. The objectives of this study are to demonst
Publikováno v:
Materials Science Forum. :750-753
Activated carbon fibers were prepared from stabilized PAN-based fibers by chemical activation using hydroxides at different concentrations. The experimental data showed variations in specific surface area, microstructure, pore size distribution, and
Autor:
Hyuk-Jae You, Hyun-Sik Hahm, Seong-Kil Kim, Hye-Jin Jo, II-Woo Shim, Young-Geun Kim, Hong-Soo Park
Publikováno v:
Journal of Coatings Technology and Research. 3:53-60
Three phosphorous functional groups were introduced in one structural unit of polymer backbone to enhance the flame retardancy of PU coatings. In the first step, we synthesized tetramethylene bis(orthophosphate) (TBOP) that contained two phosphorus f
Publikováno v:
Macromolecular Research. 12:399-406
Glass-like carbon precursors shrink significantly during curing and carbonization, which leads to crack formation and bending. Cured furan resin powder and ethanol were added to furan resin to diminish the weight loss, to suppress the shrinkage and b