Enhanced catalytic performance of cobalt and iron co-doped ceria catalysts for soot combustion

Gao, Yibo; Teng, Shichang; Wang, Zhongpeng; Wang, Baoqin; Liu, Wei; Liu, Wenxu; Wang, Liguo

doi:10.1007/s10853-019-03973-z

Cited by 20 publications

(11 citation statements)

References 56 publications

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“…A series of cobalt and/or iron-modified ceria catalysts for diesel soot combustion was synthesized using CTAB-assisted co-precipitation method [ 23 ]. It was shown that all prepared systems had mesoporous texture and monomodal pore size distribution.…”

Section: Ceria Preparation Methods Based On Artificial Templatesmentioning

confidence: 99%

“…Artificial templating agents/precursors can be based on pure organics and polymers [ 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ], silicon-organic compounds and mesoporous silica [ 27 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 ], metal-organic frameworks [ 42 , 43 ], synthetic carbon materials [ 44 , 45 , 46 , 47 ], etc.…”

Section: General Strategies For Template Synthesis Of Porous Catalmentioning

confidence: 99%

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Template Synthesis of Porous Ceria-Based Catalysts for Environmental Application

et al. 2020

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Porous oxide materials are widely used in environmental catalysis owing to their outstanding properties such as high specific surface area, enhanced mass transport and diffusion, and accessibility of active sites. Oxides of metals with variable oxidation state such as ceria and double oxides based on ceria also provide high oxygen storage capacity which is important in a huge number of oxidation processes. The outstanding progress in the development of hierarchically organized porous oxide catalysts relates to the use of template synthetic methods. Single and mixed oxides with enhanced porous structure can serve both as supports for the catalysts of different nature and active components for catalytic oxidation of volatile organic compounds, soot particles and other environmentally dangerous components of exhaust gases, in hydrocarbons reforming, water gas shift reaction and photocatalytic transformations. This review highlights the recent progress in synthetic strategies using different types of templates (artificial and biological, hard and soft), including combined ones, in the preparation of single and mixed oxide catalysts based on ceria, and provides examples of their application in the main areas of environmental catalysis.

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Section: Ceria Preparation Methods Based On Artificial Templatesmentioning

confidence: 99%

Section: General Strategies For Template Synthesis Of Porous Catalmentioning

confidence: 99%

Template Synthesis of Porous Ceria-Based Catalysts for Environmental Application

et al. 2020

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“…The catalysts exhibited four Raman peaks at 468.2 cm −1 , 510.4 cm −1 , 608.1 cm −1 , and 673.8 cm −1 , corresponding to the E g , F 2 2g , F 3 2g and A 1g modes of the spinel-type Co 3 O 4 , respectively. 41 3D-Co x Ce 1 O y has similar Raman spectra to pure Co 3 O 4 (bulk Co 3 O 4 and 3D-Co 3 O 4 ) catalysts, implying that the 3D-Co x Ce 1 O y catalysts are dominated by Co 3 O 4 . In addition, it is clear from Fig.…”

Section: Resultsmentioning

confidence: 84%

High-performance Ce doped three-dimensional ordered macroporous Co-based catalysts on CO oxidation

Zhou

Zhao

et al. 2023

Catal. Sci. Technol.

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“…Three distinct peaks were observed at 511, 639, and 934 °C labeled as u , v , and w , respectively, over pristine CeO 2 . The low-temperature peaks labeled as u and v correspond to Ce 4+ to Ce 3+ reduction in the surface, respectively, while w is assigned to bulk reduction of Ce 4+ to Ce 3+ . − − On the contrary, Ce 0.95 Ni 0.05 O 2−δ exhibited three peaks at 395, 480, and 934.6 °C denoted u 1 , v , and w corresponding to the reduction of Ni 2+ , surface Ce 4+ , and bulk Ce 4+ , respectively. Apparently, the introduction of Ni into the CeO 2 matrix promotes the reducibility of the material at lower temperatures.…”

Section: Resultsmentioning

confidence: 99%

Unveiling the Mechanistic Significance of Reducibility and Lattice Oxygen Evolution in the Ce_1–x–yZr_xNi_yO_2−δ Catalyst for Methanol Electro-Oxidation

Meenu,

Roy

2023

ACS Appl. Energy Mater.

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Ni-based catalysts have garnered significant attention as alternative materials for the methanol oxidation reaction with its interesting Ni2+/Ni3+ redox couple. Enhancing the challenging Ni2+ → Ni3+ oxidation process can further improve catalytic methanol oxidation. In this study, through structural and surface analyses, we demonstrate that the highly reducible CeO2–ZrO2 support in the Ce1–x–y Zr x Ni y O2−δ solid solution effectively facilitates the Ni2+ → Ni3+ oxidation process and the evolution of lattice oxygen during methanol oxidation. The presence of Ni3+ species along with the surface oxygen vacancy promotes the formation of –OOH surface intermediates, while the evolved lattice oxygen facilitates the oxidation of CO, resulting in improved CO tolerance and enhanced methanol oxidation activity in Ce1–x–y Zr x Ni y O2−δ catalysts.

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Enhanced catalytic performance of cobalt and iron co-doped ceria catalysts for soot combustion

Cited by 20 publications

References 56 publications

Template Synthesis of Porous Ceria-Based Catalysts for Environmental Application

Template Synthesis of Porous Ceria-Based Catalysts for Environmental Application

High-performance Ce doped three-dimensional ordered macroporous Co-based catalysts on CO oxidation

Unveiling the Mechanistic Significance of Reducibility and Lattice Oxygen Evolution in the Ce_1–x–yZr_xNi_yO_2−δ Catalyst for Methanol Electro-Oxidation

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Enhanced catalytic performance of cobalt and iron co-doped ceria catalysts for soot combustion

Cited by 20 publications

References 56 publications

Template Synthesis of Porous Ceria-Based Catalysts for Environmental Application

Template Synthesis of Porous Ceria-Based Catalysts for Environmental Application

High-performance Ce doped three-dimensional ordered macroporous Co-based catalysts on CO oxidation

Unveiling the Mechanistic Significance of Reducibility and Lattice Oxygen Evolution in the Ce1–x–yZrxNiyO2−δ Catalyst for Methanol Electro-Oxidation

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Unveiling the Mechanistic Significance of Reducibility and Lattice Oxygen Evolution in the Ce_1–x–yZr_xNi_yO_2−δ Catalyst for Methanol Electro-Oxidation