Deoxygenation of Fatty Acid Over Three-Dimensionally Ordered Mesoporous Carbon Supported Palladium Catalysts
- Authors
- Kim, Tae-Wan; Hwang, Si-Ra; Suh, Young-Woong; Kim, Chul-Ung
- Issue Date
- Jul-2017
- Publisher
- SPRINGER/PLENUM PUBLISHERS
- Keywords
- Deoxygenation; Fatty acid; Palladium; Mesoporous carbon; Pd/carbon catalyst; Biofuels
- Citation
- TOPICS IN CATALYSIS, v.60, no.9-11, pp.677 - 684
- Indexed
- SCIE
SCOPUS
- Journal Title
- TOPICS IN CATALYSIS
- Volume
- 60
- Number
- 9-11
- Start Page
- 677
- End Page
- 684
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/152028
- DOI
- 10.1007/s11244-017-0768-2
- ISSN
- 1022-5528
- Abstract
- Two ordered mesoporous carbons (OMCs) possessing three-dimensionally (3-D) well-ordered mesoporosity with different framework configurations were prepared via a hard template route. The OMCs were treated with different surface-oxidation methods for the preparation of OMC supported highly dispersed Pd catalysts (Pd/OMC). Among the different surface oxidation conditions, the 3-D ordered mesoporous structure of CMK-9 is preserved under a mild surface-oxidation condition by an ammonium persulfate solution at 30 degrees C for 2 h. The Pd/OMCs were introduced as catalysts for the catalytic deoxygenation of a fatty acid without hydrogen or different amounts of hydrogen. The catalytic performance of the deoxygenation of a fatty acid (stearic acid) was investigated in a batch reactor without hydrogen and a continuous fixed-bed reactor with different amounts of hydrogen (H-2/stearic acid = 0-3 molar ratios). The Pd/OMC catalysts were found to be less prone to deactivation than a commercially available activated carbon supported Pd catalyst (Pd/AC). This was attributed to the well-ordered 3-D mesoporosity in the OMC supports, which facilitated the facile diffusion of the liquid reactant and product with a long carbon chain length in the catalyst during the deoxygenation reaction, leading to less Pd metal sintering during the deoxygenation reaction as compared to that with Pd/AC catalyst.
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