Journal
ISCIENCE
Volume 24, Issue 6, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.isci.2021.102689
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Funding
- National Natural Science Foundation of China [21976117, 22006098]
- Shanghai Sailing Program [20YF1413300]
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This study demonstrated efficient catalytic combustion of toluene over Pt/gamma-Al2O3 catalysts by tailoring active Pt species spatially. The catalyst with low Pt-content showed super activity and water-resistant stability. The strong metal-support interaction at the Al-OH-Pt interfaces elongated the Pt-O bond and contributed to the oxidation of toluene.
Exploring highly efficient and low-cost supported Pt catalysts is attractive for the application of volatile organic compounds (VOCs) combustion. Herein, efficient catalytic combustion of toluene at low temperature over Pt/gamma-Al2O3 catalysts has been demonstrated by tailoring active Pt species spatially. Pt/gamma-Al2O3 catalyst with low Pt-content (0.26 wt%) containing both interfacial Pt-Al(OH)(x) and surficial-metallic Pt (Pt-0) species exhibited super activity andwater-resistant stability for toluene oxidation. The strongmetal-support interaction located at the Al-OH-Pt interfaces elongated the Pt-O bond and contributed to the oxidation of toluene. Meanwhile, the OH group at the Al-OH-Pt interfaces had the strongest adsorption and activation capability for toluene and the derived intermediate species were subsequently oxidized by oxygen species activated by surficial Pt-0 to yield carbon dioxide and water. This work initiated an inspiring sight to the design of active Pt species for the VOCs combustion.
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