Active Pt/CeO2 catalysts prepared by an alcohol-reduction process for low-temperature CO-PROX reaction

Queiroz, Carla; Machado, Arthur Pignataro; Paiva, Ana Rita Noborikawa; Antoniassi, Rodolfo M.; Vaz, Jorge Moreira; Spinacé, Estevam V.

doi:10.1007/s40243-019-0155-y

Cited by 12 publications

(3 citation statements)

References 27 publications

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“…Ag/CeO 2 obtains two peaks of H 2 consumption at around 200 and 700 °C, corresponding to the reduction of Ag 2 O and lattice oxygen in Ag/CeO 2 . In the H 2 -TPR of CeO 2 , Queiroz et al 75 showed two reduction peaks: one at 456 °C attributed to the reduction of CeO 2 species on the surface, and another one at 790 °C stood for that of CeO 2 containing bulk. Wei et al 76 and Yao et al 77 pointed out the peaks at low (400 °C) and high (500 °C) temperatures to the reduction of surface adsorbed oxygen and lattice oxygen of ceria, respectively.…”

Section: Resultsmentioning

confidence: 99%

Effect of Metal Oxides (CeO₂, ZnO, TiO₂, and Al₂O₃) as the Support for Silver-Supported Catalysts on the Catalytic Oxidation of Diesel Particulate Matter

Promhuad,

Sawatmongkhon,

Theinnoi

et al. 2024

ACS Omega

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This work presented the influence of metal oxides as the support for silver-supported catalysts on the catalytic oxidation of diesel particulate matter (DPM). The supports selected to be used in this work were CeO 2 (reducible), ZnO (semiconductor), TiO 2 (reducible and semiconductor), and Al 2 O 3 (acidic). The properties of the synthesized catalysts were investigated using XRD, TEM, H 2 -TPR, and XPS techniques. The DPM oxidation activity was performed using the TGA method. Different states of silver (e.g., Ag°and Ag + ) were formed with different concentrations and affected the performance of the DPM oxidation. Ag 2 O and lattice oxygen, which were mainly generated by Ag/ZnO and Ag/CeO 2 , were responsible for combusting the VOCs. The metallic silver (Ag°) formed primarily on Ag/Al 2 O 3 and Ag/TiO 2 was the main component promoting soot combustion. Contact between the catalyst and DPM had a minor effect on VOC oxidation but significantly affected the soot oxidation activity.

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Section: Resultsmentioning

confidence: 99%

Effect of Metal Oxides (CeO₂, ZnO, TiO₂, and Al₂O₃) as the Support for Silver-Supported Catalysts on the Catalytic Oxidation of Diesel Particulate Matter

Promhuad,

Sawatmongkhon,

Theinnoi

et al. 2024

ACS Omega

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“…The ARM utilizes ethylene glycol (EG) as a reducing agent [28,29]. Briefly, proper amounts of Pd precursor and ZnO were dispersed in an aqueous solution containing EG in a ratio of 3:1 EG/H 2 O.…”

Section: Alcohol-reduction Methods (Arm)mentioning

confidence: 99%

“…All chemicals were of analytical grade and used without any further purification. The Pd/ZnO photocatalysts were prepared by the alcohol-reduction method (ARM) [28,29] and by the borohydride reduction method (BRM) [30].…”

Section: Photocatalysts Preparationmentioning

confidence: 99%

Photocatalytic Methane Conversion over Pd/ZnO Photocatalysts under Mild Conditions

Machado

Carminati

Januario

et al. 2023

Methane

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Here, Pd nanoparticles supported on ZnO were prepared by the alcohol-reduction and the borohydride-reduction methods, and their efficiency towards the photocatalytic conversion of methane under mild conditions were evaluated. The resulting Pd/ZnO photocatalysts were characterized by X-ray fluorescence, X-ray diffraction, X-ray photoelectron spectroscopy, UV–Vis, and transmission electron microscopy. The reactions were performed with the photocatalysts dispersed in water in a bubbling stream of methane under UV-light illumination. The products formed were identified and quantified by gas chromatography (GC-FID/TCD/MSD). The principal products formed were C2H6 and CO2 with minor quantities of C2H4 and CO. No H2 production was observed. The preparation methods influenced the size and dispersion of Pd nanoparticles on the ZnO, affecting the performance of the photocatalysts. The best performance was observed for the photocatalyst prepared by borohydride reduction with 0.5 wt% of Pd, reaching a C2H6 production rate of 686 µmol·h−1·g−1 and a C2H6 selectivity of 46%.

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Investigation on synergistic effect of CuO and Cu–O–Ce on efficient oxidation of ethyl acetate over CuO/CeO2 catalysts

Ye,

Wang,

Chen

et al. 2024

Res Chem Intermed

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Active Pt/CeO2 catalysts prepared by an alcohol-reduction process for low-temperature CO-PROX reaction

Cited by 12 publications

References 27 publications

Effect of Metal Oxides (CeO₂, ZnO, TiO₂, and Al₂O₃) as the Support for Silver-Supported Catalysts on the Catalytic Oxidation of Diesel Particulate Matter

Effect of Metal Oxides (CeO₂, ZnO, TiO₂, and Al₂O₃) as the Support for Silver-Supported Catalysts on the Catalytic Oxidation of Diesel Particulate Matter

Photocatalytic Methane Conversion over Pd/ZnO Photocatalysts under Mild Conditions

Investigation on synergistic effect of CuO and Cu–O–Ce on efficient oxidation of ethyl acetate over CuO/CeO2 catalysts

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Active Pt/CeO2 catalysts prepared by an alcohol-reduction process for low-temperature CO-PROX reaction

Cited by 12 publications

References 27 publications

Effect of Metal Oxides (CeO2, ZnO, TiO2, and Al2O3) as the Support for Silver-Supported Catalysts on the Catalytic Oxidation of Diesel Particulate Matter

Effect of Metal Oxides (CeO2, ZnO, TiO2, and Al2O3) as the Support for Silver-Supported Catalysts on the Catalytic Oxidation of Diesel Particulate Matter

Photocatalytic Methane Conversion over Pd/ZnO Photocatalysts under Mild Conditions

Investigation on synergistic effect of CuO and Cu–O–Ce on efficient oxidation of ethyl acetate over CuO/CeO2 catalysts

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Product

Resources

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Effect of Metal Oxides (CeO₂, ZnO, TiO₂, and Al₂O₃) as the Support for Silver-Supported Catalysts on the Catalytic Oxidation of Diesel Particulate Matter

Effect of Metal Oxides (CeO₂, ZnO, TiO₂, and Al₂O₃) as the Support for Silver-Supported Catalysts on the Catalytic Oxidation of Diesel Particulate Matter