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Your search keyword '"Choi, Jae-Wook"' showing total 12 results
Start Over Author "Choi, Jae-Wook" Journal applied catalysis a: general
12 results on '"Choi, Jae-Wook"'

10. One-pot catalytic reaction to produce high-carbon-number dimeric deoxygenated hydrocarbons from lignin-derived monophenyl vanillin using Al2O3-cogelled Ru nanoparticles.

Author

Yati, Indri, Dwiatmoko, Adid Adep, Yoon, Ji Sun, Choi, Jae-Wook, Suh, Dong Jin, Jae, Jungho, and Ha, Jeong-Myeong

Subjects
*CATALYTIC reduction, *HYDROCARBONS, *CATALYTIC activity, *RUTHENIUM catalysts, *ALUMINUM oxide
Abstract

Al 2 O 3 -cogelled Ru nanoparticle (Ru@Al) catalyst was prepared by a one-pot in-situ alumina gelation method using a PVP-stabilized Ru colloid solution. The Ru@Al catalyst exhibited excellent catalytic activity during the liquid-phase hydrodeoxygenation of vanillin, demonstrating 100% conversion, as well as significantly higher yields of fully deoxygenated compounds compared to other conventional alumina-supported Ru catalysts. We also observed better selectivity to deoxygenated dimers with the Ru@Al catalyst. The improved catalytic selectivity was attributed to the hypothesized three-dimensional structures of Al 2 O 3 surrounding the Ru nanoparticles, which improved the two-step reaction, containing the dimerization of the phenolic compounds and the hydrodeoxygenation of phenolic dimers to produce deoxygenated high-carbon-number hydrocarbons. [ABSTRACT FROM AUTHOR]

Published
2016
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11. Oxidative coupling of methane to C2 hydrocarbons on the Mg–Ti mixed oxide-supported catalysts at the lower reaction temperature: Role of surface oxygen atoms.

Author

Jeon, Wonjin, Lee, Jong Yeol, Lee, Maro, Choi, Jae-Wook, Ha, Jeong-Myeong, Suh, Dong Jin, and Kim, Il Won

Subjects
*OXIDATION, *METHANE, *HYDROCARBONS, *METALLIC oxides, *METAL catalysts, *CHEMICAL reactions, *TEMPERATURE effect, *OXYGEN atom transfer reactions, *CARBON compounds
Abstract

Highlights: [•] Oxidative coupling of methane (OCM) on the Mg–Ti mixed oxide-supported catalysts. [•] High catalytic activity at the lower reaction temperature for the development of energy-saving processes. [•] Improved catalytic activity by the active surface lattice oxygen atoms. [Copyright &y& Elsevier]

Published
2013
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12. Design and preparation of high-surface-area Cu/ZnO/Al2O3 catalysts using a modified co-precipitation method for the water-gas shift reaction.

Author

Budiman, Adeline, Ridwan, Muhammad, Kim, Sung Min, Choi, Jae-Wook, Yoon, Chang Won, Ha, Jeong-Myeong, Suh, Dong Jin, and Suh, Young-Woong

Subjects
*METALLIC surfaces, *ZINC oxide, *METAL catalysts, *ALUMINUM oxide, *COPRECIPITATION (Chemistry), *WATER-gas, *GAS phase reactions
Abstract

Highlights: [•] Design and synthesis of highly dispersed Cu nanoparticle catalyst. [•] The high Cu surface area of 45.5m2/g obtained by the modified co-precipitation method. [•] Increased catalytic water-gas-shift reaction activity by increased Cu surface. [Copyright &y& Elsevier]

Published
2013
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