Sooknoi, Tawan

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Sooknoi, Tawan
Alternative Name
Sooknoi, T.
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Email
tawan.so@kmitl.ac.th

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    Item type:Publication,
    Regioselective alkane oxygenation with H2O2 catalyzed by titanosilicalite TS-1
    (2006-05-01)
    Shul'pin, Georgiy B.
    ;
    Sooknoi, Tawan
    ;
    Romakh, Vladimir B.
    ;
    Süss-Fink, Georg
    ;
    Shul'pina, Lidia S.
    Titanosilicalite TS-1 catalyses oxidation of light (methane, ethane, propane and n-butane) and normal higher (hexane, heptane, octane and nonane) alkanes to give the corresponding isomeric alcohols and ketones. The oxidation of higher alkanes proceeds in many cases with a unique regioselectivity. Thus, in the reaction with n-heptane the CH<inf>2</inf> groups in position 3 exhibited a reactivity 2.5 times higher than those of the other methylene groups. This selectivity can be enhanced if hexan-3-ol is added to the reaction mixture, the 3-CH<inf>2</inf>/2-CH<inf>2</inf> ratio becoming 10. It is assumed that the unusual selectivity in the oxidation of n-heptane (and other higher alkanes) is due to steric hindrance in the catalyst cavity. As a result, the catalytically active species situated on the catalyst walls can only easily react with certain methylenes of the alkane, which is adsorbed in the cavity taking U-shape (hairpin) conformations. © 2006 Elsevier Ltd. All rights reserved.
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    Catalytic conversion of bioethanol to value-added chemicals and fuels: A review
    (2022-03-01)
    Xiang, Huan
    ;
    Xin, Ruojia
    ;
    Prasongthum, Natthawan
    ;
    Natewong, Paweesuda
    ;
    Sooknoi, Tawan
    Bioethanol produced via valorisation of renewable biomass is of great interest to many industries. The increased availability and decreased cost of bioethanol make it a promising platform molecule to produce a wide range of value-added chemicals and fuels via the catalytic conversions. This paper provides a comprehensive review of catalytic conversions of bioethanol to a variety of chemicals/fuels such as hydrogen, C<inf>2</inf>–C<inf>4</inf> olefins, gasoline and small oxygenates. Specifically, the focus was placed on the relationship between the catalyst property (such as pore structure, acidity, active metal sites, and catalyst supports) and the catalytic performance (including catalyst activity and stability), as well as the reaction mechanisms involved. Future research avenues on the catalyst design for improving catalytic valorisation of bioethanol are also discussed.