Highly active and water-resistant Lanthanum-doped platinum-cobalt oxide catalysts for CO oxidation

Xu, Liuxin; Pan, Ya; Li, Hongmei; Xu, Ruichao; Sun, Zhihu

doi:10.1016/j.apcatb.2023.122678

Cited by 25 publications

(6 citation statements)

References 58 publications

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“…[1] Studying the catalytic oxidation of CO gas is vital important not only for the human health, but also for comprehending mechanisms of heterogeneous catalytic reactions, as it is a typical probe reaction. [2] Based on prior research, noble metal catalysts, such as Pt, [3] Pd, [4] Au, [5] etc. exhibit remarkable CO oxidation performance, especially at low temperature condition.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is extremely dangerous of staying in a closed room with high CO concentration [1] . Studying the catalytic oxidation of CO gas is vital important not only for the human health, but also for comprehending mechanisms of heterogeneous catalytic reactions, as it is a typical probe reaction [2] . Based on prior research, noble metal catalysts, such as Pt, [3] Pd, [4] Au, [5] etc.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Evaluation of FeMnTi Monolithic Catalysts for High‐Efficiency CO Oxidation

Tang,

Zhang,

Wang

et al. 2024

ChemistrySelect

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A comprehensive study was conducted on the synthesis of FeMnTi monolithic catalysts using plasma electrolytic oxidation (PEO) process combined with hydrothermal method followed by depositing active nanostructures. As synthesized catalysts were characterized using a series of techniques for morphology, structure and surface chemical state investigations. Meanwhile, the CO light‐off curves demonstrate that they possess excellent low‐temperature catalytic performance compared with TiO2 based single transition oxides. Specifically, FeMnTi(0.10, 4) can achieve 100 % conversion at 201 °C, which is due to the homogeneous elements distribution, large surface area and high surface activity. The supersaturation of the deposited solution and deposition time determine the growth of MnOx and the FeMnTi(0.10, 4) has the most suitable Fe/Mn atom ratio of 2.5. Furthermore, the electron transfer between Fe (Fe2+ and Fe3+) and Mn (Mn2+, Mn3+ and Mn4+) ensures the excellent redox properties. The synthetic strategy proposed in this work has general applicability for synthesizing multiple transition oxides monolithic catalysts not only for CO oxidation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation and Evaluation of FeMnTi Monolithic Catalysts for High‐Efficiency CO Oxidation

Tang,

Zhang,

Wang

et al. 2024

ChemistrySelect

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“…The attractive activity and thermal stability of noble metal-based catalysts make them highly appealing for CO oxidation compared to transition-metal oxide catalysts. Among numerous reported noble metal-based catalysts, Pt-based catalysts have gained great interest in various catalytic oxidation reactions, including formaldehyde oxidation [ 13 ], CO oxidation [ 14 ], propane oxidation [ 15 ], and so on. It is well known that ultrafine platinum particles (<2 nm) can efficiently enhance the catalytic oxidation activity [ 16 , 17 ], probably owing to the increase in their surface area and the presence of more edge and corner atoms.…”

Section: Introductionmentioning

confidence: 99%

FeOx-Modified Ultrafine Platinum Particles Supported on MgFe2O4 with High Catalytic Activity and Promising Stability toward Low-Temperature Oxidation of CO

Wang,

Shi

2024

Molecules

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Catalytic oxidation is widely recognized as a highly effective approach for eliminating highly toxic CO. The current challenge lies in designing catalysts that possess exceptional low-temperature activity and stability. In this work, we have prepared ultrafine platinum particles of ~1 nm diameter dispersed on a MgFe2O4 support and found that the addition of 3 wt.% FeOx into the 3Pt/MgFe2O4 significantly improves its activity and stability. At an ultra-low temperature of 30 °C, the CO can be totally converted to CO2 over 3FeOx-3Pt/MgFe2O4. High and stable performances of CO-catalytic oxidation can be obtained at 60 °C on 3FeOx-3Pt/MgFe2O4 over 35 min on-stream at WHSV = 30,000 mL/(g·h). Based on a series of characterizations including BET, XRD, ICP, STEM, H2-TPR, XPS, CO-DRIFT, O2-TPD and CO-TPD, it was disclosed that the relatively high activity and stability of 3FeOx-3Pt/MgFe2O4 is due to the fact that the addition of FeOx could facilitate the antioxidant capacity of Pt and oxygen mobility and increase the proportion of adsorbed oxygen species and the amounts of adsorbed CO. These results are helpful in designing Pt-based catalysts exhibiting higher activity and stability at low temperatures for the catalytic oxidation of CO.

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“…Noble metals (e.g., Pt, Pd, and Au) have been reported to show excellent performance in the catalytic oxidation of CO, but their scarcity and high price limited their wider application. Transition metal oxides can be replacements for noble metal oxides in CO oxidation.…”

Section: Introductionmentioning

confidence: 99%

“…The CO oxidation catalyst works in the same temperature range of 300−400 °C as the replaced SCR catalyst under a high SO 2 concentration. 5,6 Noble metals (e.g., Pt, 7 Pd, 8 and Au 9 ) have been reported to show excellent performance in the catalytic oxidation of CO, but their scarcity and high price limited their wider application. Transition metal oxides can be replacements for noble metal oxides in CO oxidation.…”

Section: Introductionmentioning

confidence: 99%

SO₂-Poisoning-Resistant CeO₂@TiO₂ Nanorod with the core–shell Structure for the Catalytic Oxidation of CO

Gao,

Dong,

et al. 2023

J. Phys. Chem. C

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The core−shell-structured CeO 2 @TiO 2 nanorods and traditional CeTiO x nanoparticles were prepared to study the role of the core−shell structure in CO catalytic oxidation and SO 2 resistance. CeO 2 @TiO 2 maintained a higher than 98% CO conversion at 300 °C in the flue gas containing 1000 ppm CO and achieved about 68% CO conversion after adding 500 ppm SO 2 for 5 h. The core−shell structure mitigated the crystallinity loss of the CeO 2 core and pore blockage of CeO 2 @TiO 2 . TiO 2 avoided the reaction between SO 2 and CeO 2 to protect CeO 2 from SO 2 poisoning. In the case of SO 2 passing through the shell, TiO 2 could inhibit the formation of Ce 2 (SO 4 ) 3 , delaying the deactivation of the CeO 2 core. Furthermore, the sulfate deposited on CeO 2 @TiO 2 possessed a smaller amount and poorer thermal stability than that on CeTiO x . The design of the core−shell structure provides an effective route to enhance the SO 2 -poisoning resistance of catalysts in CO oxidation.

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Highly active and water-resistant Lanthanum-doped platinum-cobalt oxide catalysts for CO oxidation

Cited by 25 publications

References 58 publications

Preparation and Evaluation of FeMnTi Monolithic Catalysts for High‐Efficiency CO Oxidation

Preparation and Evaluation of FeMnTi Monolithic Catalysts for High‐Efficiency CO Oxidation

FeOx-Modified Ultrafine Platinum Particles Supported on MgFe2O4 with High Catalytic Activity and Promising Stability toward Low-Temperature Oxidation of CO

SO₂-Poisoning-Resistant CeO₂@TiO₂ Nanorod with the core–shell Structure for the Catalytic Oxidation of CO

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Highly active and water-resistant Lanthanum-doped platinum-cobalt oxide catalysts for CO oxidation

Cited by 25 publications

References 58 publications

Preparation and Evaluation of FeMnTi Monolithic Catalysts for High‐Efficiency CO Oxidation

Preparation and Evaluation of FeMnTi Monolithic Catalysts for High‐Efficiency CO Oxidation

FeOx-Modified Ultrafine Platinum Particles Supported on MgFe2O4 with High Catalytic Activity and Promising Stability toward Low-Temperature Oxidation of CO

SO2-Poisoning-Resistant CeO2@TiO2 Nanorod with the core–shell Structure for the Catalytic Oxidation of CO

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SO₂-Poisoning-Resistant CeO₂@TiO₂ Nanorod with the core–shell Structure for the Catalytic Oxidation of CO