Catalytic performances of Pt–Pd/CeO2 catalysts for selective CO oxidation

Parinyaswan, Apichart; Pongstabodee, Sangobtip; Luengnaruemitchai, Apanee

doi:10.1016/j.ijhydene.2006.05.002

Cited by 62 publications

(29 citation statements)

References 23 publications

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“…These results are in agreement with those obtained in the study of the reaction by DRIFTS (see below), which reflect the influence of the presence of hydroxyl groups in the catalysts surface in the CO oxidation reaction. Parinyasawanet al [61]found the same tendency for PdPt/CeO 2 catalysts. However, Ayastuyet al [28]evaluated the catalytic activity of Pt/CeZrO 2 and found that the presence of water had a negative effect, with a decrease at low temperatures.Moreover,the activity is hardly affected at higher temperatures.…”

Section: Co Prox: Effect Of Co 2 and H 2 O In The Feedmentioning

confidence: 71%

Preferential oxidation of CO in excess of H2 on Pt/CeO2–Nb2O5 catalysts

Jardim

Rico-Francés

Coloma

et al. 2015

Applied Catalysis A: General

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Section: Co Prox: Effect Of Co 2 and H 2 O In The Feedmentioning

confidence: 71%

Preferential oxidation of CO in excess of H2 on Pt/CeO2–Nb2O5 catalysts

Jardim

Rico-Francés

Coloma

et al. 2015

Applied Catalysis A: General

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“…The rational increase of the peak characteristic of 3 with the decrease of 4 [18,[42][43][44]. Moreover, the gas exhaust usually contains water vapor and then it will be valuable to add trace amount of H 2 O vapor to the gas mixture to detect its effect on the NO + CO interaction.…”

Section: −1mentioning

confidence: 99%

Adsorption of CO and NO on Ceria- and Pt-Supported TiO<sub>2</sub>: <i>In Situ</i> FTIR Study

El‐Bahy¹

2013

MRC

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Pt/TiO 2 , Ce/TiO 2 and binary system PtCe/TiO 2 catalysts were prepared by impregnation method and the structural properties of these catalysts were investigated by means of XRD, CO-TPD and UV-vis diffuse reflectance spectroscopy. As investigated by XRD, the composition of the prepared samples anatase and rutile phases with higher amount of anatase phase and its particle size was in the range of 19 -22 nm. The band gap also decreased from 3.1 to 2.85 after addition of metal to TiO 2 . The adsorption and interaction properties of NO and/or CO gases were monitored using an in situ FTIR technique. The intensity and position of the infrared peaks were strongly dependent on the composition of the catalyst. In presence of Pt, the main oxidative reductive products of (NO + CO) are CO 2 and NCO complex. The formation of NCO depends on not only the presence of platinum in the catalyst but also the presence of Lewis acid sites which is Ti 4+ in this study. However, the interaction between NO and CO gases increased in presence of CeO 2 . The optimum Ce content in PtCe/TiO 2 was 0.1% (Ce/TiO 2 ) at which the maximum peak intensity was observed for NCO and CO 2 .

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“…In particular, some active platinum catalysts supported on them have been reported for VOCs oxidation [11][12][13][14][15][16][17][18][19]. CeO 2 and CeO 2 -ZrO 2 solid solutions can release and store oxygen corresponding to the surrounding atmosphere, and these properties make them attractive components as promoters of the automotive exhaust three-way catalysts [11].…”

Section: Introductionmentioning

confidence: 99%

Complete Toluene Oxidation on Pt/CeO2-ZrO2-ZnO Catalysts

et al. 2013

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A 0.4 wt%Pt/Ce 0.76 Zr 0.19 Zn 0.05 O 1.95 catalyst was prepared by the evaporative drying method. The catalytic toluene oxidation activity of the catalyst was investigated and the calcination temperature dependence on the toluene oxidation activity was characterized. It was confirmed that only CO 2 and steam were produced by the complete oxidation of toluene, and no toluene-derived compounds were detected as by-products with a gas chromatography-mass spectrometer. Toluene was completely oxidized at 320 °C on the 0.4 wt%Pt/Ce 0.76 Zr 0.19 Zn 0.05 O 1.95 catalyst calcined at 500 °C. The toluene oxidation activity slightly decreased with increasing the calcination temperature of the catalyst. However, significant deactivation was not recognized in the present 0.4 wt%Pt/Ce 0.76 Zr 0.19 Zn 0.05 O 1.95 catalyst, and toluene was completely oxidized at 360 °C even after calcination at 1000 °C. From these results, it became obvious that the 0.4 wt%Pt/Ce 0.76 Zr 0.19 Zn 0.05 O 1.95 catalyst has high thermal stability for toluene oxidation activity.

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Catalytic performances of Pt–Pd/CeO2 catalysts for selective CO oxidation

Cited by 62 publications

References 23 publications

Preferential oxidation of CO in excess of H2 on Pt/CeO2–Nb2O5 catalysts

Preferential oxidation of CO in excess of H2 on Pt/CeO2–Nb2O5 catalysts

Adsorption of CO and NO on Ceria- and Pt-Supported TiO<sub>2</sub>: <i>In Situ</i> FTIR Study

Complete Toluene Oxidation on Pt/CeO2-ZrO2-ZnO Catalysts

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Catalytic performances of Pt–Pd/CeO2 catalysts for selective CO oxidation

Cited by 62 publications

References 23 publications

Preferential oxidation of CO in excess of H2 on Pt/CeO2–Nb2O5 catalysts

Preferential oxidation of CO in excess of H2 on Pt/CeO2–Nb2O5 catalysts

Adsorption of CO and NO on Ceria- and Pt-Supported TiO&lt;sub&gt;2&lt;/sub&gt;: &lt;i&gt;In Situ&lt;/i&gt; FTIR Study

Complete Toluene Oxidation on Pt/CeO2-ZrO2-ZnO Catalysts

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Adsorption of CO and NO on Ceria- and Pt-Supported TiO<sub>2</sub>: <i>In Situ</i> FTIR Study