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Jang, Ji-Wook
JW Energy Lab
Research Interests
  • Materials Science, Energy

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Photocatalytic selective oxidation of the terminal methyl group of dodecane with molecular oxygen over atomically dispersed Ti in a mesoporous SiO2 matrix

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Title
Photocatalytic selective oxidation of the terminal methyl group of dodecane with molecular oxygen over atomically dispersed Ti in a mesoporous SiO2 matrix
Author
Kim, Jae YulJang, Ji-WookYoun, Duck HyunKim, Eun SunChoi, Sun HeeShin, Tae JooLee, Jae Sung
Keywords
RAY-ABSORPTION-SPECTROSCOPY; N-HEXANE; QUANTITATIVE-ANALYSIS; LINEAR COMBINATION; HYDROGEN-PEROXIDE; AEROBIC OXIDATION; SIEVE CATALYSTS; BINARY OXIDES; ALKANES; XANES
Issue Date
201312
Publisher
ROYAL SOC CHEMISTRY
Citation
GREEN CHEMISTRY, v.15, no.12, pp.3387 - 3395
Abstract
Extraordinarily high selectivity (80-93%) for the oxyfunctionalization of the terminal methyl group was discovered in the photocatalytic selective oxidation of dodecane with molecular oxygen in a continuous flow system under mild gas phase reaction conditions over mesoporous TiO2-SiO 2 mixed oxide photocatalysts. The oxygenated hydrocarbon products were mainly aldehydes with carboxylic acids and ketones as minor products. By dispersing most of the Ti atomically in a tetrahedral coordination in a SiO 2 matrix, the oxygenated products were stabilized by diluting contiguous Ti sites present on the surface of TiO2 particles. The preferential oxidation of the terminal methyl group was ascribed to the extensive C-C bond breaking by photogenerated holes prior to oxyfunctionalization.
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DOI
http://dx.doi.org/10.1039/c3gc41343h
ISSN
1463-9262
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