Examinando por Autor "de Castro, Baltazar"

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Improving Oxidative Catalytic Efficiency for Fuels Desulfurization Using Hybrid Materials Based in MOF-808@SBA-15Improving Oxidative Catalytic Efficiency for Fuels Desulfurization Using Hybrid Materials Based in MOF-808@SBA-15
(Wiley, 2024-04-11) C. Fernandes, Simone; Leo, Pedro; Santos-Vieira, Isabel; de Castro, Baltazar; Cunha-Silva, Luis; S. Balula, Salete
This work unveils a route for a new generation of heterogeneous polyoxometalate (POMs) based catalysts associated to the preparation of hybrid materials as a triad of POMs, mesoporous silica (SBA-15) and microporous MOF structures (MOF-808). The prepared catalyst, PMo12@MOF-808@SBA-15, with the main active center the phosphomolybdic acid (PMo12), was successfully applied for the desulfurization of a multicomponent fuel. Its oxidative catalytic performance showed to be considerable superior to the isolated POM@MOF and able to be recycled for more catalytic cycles without active loss. The higher catalytic performance seems to be directly related with the preparation of a more amorphous MOF structure within the channels of SBA-15, in the presence of active POM guests.