期刊
SUSTAINABLE ENERGY & FUELS
卷 5, 期 16, 页码 4032-4040出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1se00522g
关键词
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资金
- Portuguese national funds (FCT/MCTES, FundacAo para a Ciencia e Tecnologia and Ministerio da Ciencia, Tecnologia e Ensino Superior) [UIDB/50006/2020]
- European Union (FEDER funds) [COMPETE POCI-01-0145-FEDER-031983]
- FCT/MCTES [PTDC/CTM-CTM/31983/2017, CEECIND/00793/2018, CEECIND/03877/2018]
- FCT/MCTES
- ESF (European Social Fund) [SFRH/BD/150659/2020]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/150659/2020] Funding Source: FCT
The encapsulation of PMo12O40·nH(2)O in the MOF-808 framework prepared a nanocomposite PMo12@MOF-808 with remarkable catalytic activity for simultaneous oxidative desulfurization and denitrogenation of model fuel. The material exhibited high stability and ideal pore dimensions for efficient diffusion of sulfur/nitrogen compounds and oxidant during the reactions.
The encapsulation of a polyoxomolybdate, H-3(PMo12O40)center dot nH(2)O (PMo12), in the nanoporous MOF-808 framework was carried out for the first time by a straightforward in situ method based on a bottle-around-the ship approach, to prepare an unprecedented nanocomposite, PMo12@MOF-808. This material revealed notable catalytic activity for simultaneous oxidative desulfurization and denitrogenation of a model fuel containing the most representative refractory sulfur and nitrogen compounds in fuels: near complete desulfurization and denitrogenation were achieved after 1 h using the H2O2 oxidant. Moreover, PMo12@MOF-808 showed high stability and the nonexistence of activity loss for consecutive recycling reactions. The absence of PMo12 leaching and, simultaneously, the non-occurrence of cavity blockage reflects the ideal synergistic combination of the pore size to accommodate guest active PMo12 with pore entrance dimensions that promote a high diffusion of sulfur/nitrogen compounds and H2O2 during concurrent oxidative desulfurization and denitrogenation reactions.
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