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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    Structure–property relationships in Mg–Al hydrotalcites and derived mixed oxides for biomass conversion
    (2026-09-01)
    Lakhani, Pratikkumar
    ;
    Sooknoi, Tawan
    ;
    Kawi, Sibudjing
    ;
    Tomishige, Keiichi
    ;
    Srifa, Atthapon
    Mg–Al hydrotalcites are prototypical layered double hydroxides whose physicochemical properties arise from highly tunable local atomic environments and reversible structural transformations. Derived from brucite-like layers of edge-sharing MgO<inf>6</inf> and AlO<inf>6</inf> octahedra, these materials exhibit adjustable layer charge density, controlled cation distribution, and chemically responsive interlayer galleries composed of anions and hydrogen-bonded water networks. Variations in Mg/Al ratio, interlayer composition, synthesis strategy, and post-synthesis treatments strongly influence local coordination geometry, defect density, acid-base site distribution, and surface reactivity. Upon thermal activation, hydrotalcites undergo topotactic transformation into homogeneous Mg–Al mixed metal oxides, generating coordinatively unsaturated metal centers, lattice defects, and a balanced ensemble of Brønsted basic and Lewis acidic sites. Notably, these oxides retain a structural memory effect, enabling partial reconstruction of the layered framework under aqueous or reactive environments and imparting dynamic adaptability to the local surface structure. This reversible interplay between layered and oxide states governs metal anchoring, electronic metal-support interactions, and stabilization of highly dispersed mono- and bimetallic active phases. This review examines Mg–Al hydrotalcites and their calcined derivatives from a structural and surface chemistry perspective, correlating synthesis-induced structural features, local coordination environments, and catalytic functionality using insights from advanced diffraction, spectroscopic, microscopic, and operando techniques. By correlating coordination structure with catalytic behavior, this article provides a unified framework for the rational design of Mg–Al hydrotalcite-based materials as versatile catalyst supports and multifunctional catalytic systems.
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    A Career in Catalysis: Daniel Resasco
    (2025-05-02)
    Resasco, Joaquin
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    Albanese, Jimmy Faria
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    Alvarez, Walter
    ;
    Crossley, Steven
    ;
    Haller, Gary L.
    Daniel Resasco is widely recognized for his significant contributions to the science and application of heterogeneous catalysis. In this Account, we highlight key points along his career path, demonstrating how fundamental insights─drawn from rigorous kinetic analysis, precise materials synthesis, and in situ characterization─enabled breakthroughs in areas ranging from strong metal-support interactions to biomass upgrading. Daniel’s work on selective ring opening of hydrocarbons influenced the production of cleaner diesel fuels, while his innovative methods for synthesizing single-walled carbon nanotubes accelerated progress in nanomaterial applications. He later pioneered the use of Pickering emulsions in catalysis, employing amphiphilic materials to control selectivity and facilitate product separation at water-oil interfaces. Throughout these varied application areas, Daniel consistently blended a rigorous mechanistic approach with pragmatic goals, ensuring that the concepts he uncovered could be translated across topics and have practical impact. Beyond his scientific contributions, we highlight Daniel’s commitment to supporting the next generation of researchers in catalysis science.
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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.