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- W2040804172 abstract "In the quest of better CO elimination catalysts, Fe oxide was employed to promote platinum supported on HY zeolite. Fe-free and Fe-promoted PtY catalysts were prepared by ion exchange method and calcined at 500 °C. The prepared samples were characterized using XRD, FTIR, TEM, CO adsorption and CO-TPD. The particles size calculated from XRD patterns and TEM images was ≈18–20 nm in PtY and ≈8–15 nm in PtFeY. The CO removal performance over the prepared solids has been investigated by means of in situ technique using FTIR spectroscopy. Platinum surface modified with Fe oxide has a pronounced catalytic activity towards the CO oxidation more than Fe-free Pt containing catalyst. Reduction of the prepared catalysts with H2 gas prior to admission of gas mixtures increased the catalytic activity more than that of as prepared catalysts. A strong positive water-effect was established when a trace amount of water (more realistic conditions) was added to the gas mixture (CO + O2) during the CO oxidation particularly over PtFeY. In presence of water, the amount of CO2 adsorbed over PtFeY is ≈5 and ≈600 times more than that of water free reaction over PtFeY and PtY catalysts, respectively." @default.
- W2040804172 created "2016-06-24" @default.
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- W2040804172 date "2011-06-01" @default.
- W2040804172 modified "2023-09-23" @default.
- W2040804172 title "In situ FTIR studies of CO oxidation over Fe-free and Fe-promoted PtY catalysts: Effect of water vapor addition" @default.
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- W2040804172 doi "https://doi.org/10.1016/j.molcata.2011.05.008" @default.
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