Electrospinning synthesis and characterization of nanofibers of Co, Ce and mixed Co-Ce oxides. Their application to oxidation reactions of diesel soot and CO

Stegmayer, María Ángeles; Irusta, Silvia; Miró, Eduardo Ernesto; Milt, Viviana Guadalupe

doi:10.1016/j.cattod.2020.12.018

Cited by 19 publications

(6 citation statements)

References 46 publications

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“…Based on the previous research, in order to increase the contact point between catalyst and PM, many catalysts with engineering form have been proposed to enhance the solid–solid interaction between catalyst and PM (Di Sarli et al 2016 ). Fibers (Stegmayer et al 2022 ), rods (Wei et al 2020c ), sheets (Yang et al 2022b ), cubes (Wei et al 2020c ), 3DOM (Zhao et al 2020b ), and star structures (Woźniak et al 2020 ) had been shown that they had played a positive role in catalysis. Wei et al (Wei et al 2020c ) investigated the soot removal efficiency of different exposed surfaces of CeO / Au and found that the rod catalyst can achieve the highest removal efficiency at the lowest temperature.…”

Section: Diesel Particulate Filter Regenerationmentioning

confidence: 99%

Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

Zhang

Dong

Lan

et al. 2023

Environ Sci Pollut Res

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Diesel particulate filter (DPF) is considered as an effective method to control particulate matter (PM) emissions from diesel engines, which is included in the mandatory installation list by more and more national/regional laws and regulations, such as CHINA VI, Euro VI, and EPA Tier3. Due to the limited capacity of DPF to contain PM, the manufacturer introduced a method of treating deposited PM by oxidation, which is called regeneration. This paper comprehensively summarizes the most advanced regeneration technology, including filter structure, new catalyst formula, accurate soot prediction, safe and reliable regeneration strategy, uncontrolled regeneration and its control methods. In addition, due to the change of working conditions in the regeneration process, the additional emissions during regeneration are discussed in this paper. The DPF is not only the aftertreatment device but also can be combined with diesel oxidation catalyst (DOC), selective catalytic reduction (SCR) and exhaust recirculation (EGR). In addition, the impact of DPF modification on the original system of some old models has been reasonably discussed in order to achieve emission targets.

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Section: Diesel Particulate Filter Regenerationmentioning

confidence: 99%

Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

Zhang

Dong

Lan

et al. 2023

Environ Sci Pollut Res

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“…In this sense, Milt el at. [106] prepared Ce3O4/CeO2 electrospun nanofibers that probed to be active for soot and CO oxidation, which are reactions with j-l). Note that the scale of each figure has been adapted to the size of the sample.…”

Section: Other Materialsmentioning

confidence: 99%

Research Progress on the Applications of Electrospun Nanofibers in Catalysis

Guerrero‐Pérez

2021

Catalysts

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During the last two decades, electrospinning has become a very popular technique for the fabrication of nanofibers due to its low cost and simple handling. Nanofiber materials have found utilization in many areas such as medicine, sensors, batteries, etc. In catalysis, these materials also present important advantages, since they present a low resistance to internal diffusion and a high surface area to volume ratio. These advantages are mainly due to the diameter–length proportion. A bibliographic analysis on the applications of electrospun nanofibers in catalysis shows that there are two important groups of catalysts that are being investigated, based on TiO2 and in carbon materials. The main applications found are in photo- and in electro-catalysis. The present study contributes by reviewing these catalytic applications of electrospun nanofibers and demonstrating that they are promising materials as catalysts, underlining some works to prove the advantages and possibilities that these materials have as catalysts. On one hand, the possibilities of synthesis are almost infinite, since with coaxial electrospinning quite complex nanofibers with different layers can be prepared. On the other hand, the diameter and other properties can be controlled by monitoring the applied voltage and other parameters during the synthesis, being quite reproducible procedures. The main advantages of these materials can be grouped in two: one related to their morphology, as has been commented, relative to their low resistance and internal diffusion, that is, their fluidynamic behavior in the reactor; the second group involves advantages related to the fact that the active phases can be nanoscaled and dispersed, improving the activity and selectivity in comparison with conventional catalytic materials with the same chemical composition.

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“…The morphology of catalysts significantly impacts the reaction rate of catalytic oxidation. [22][23][24] According to the spatial dimension, the morphology can be divided into 1D structures 25,26 (nanowires and nanofibers), 2D structures 9,27 (nanosheets and porous nanosheets) and 3D structures 22,23,28 (3DOM, nano-cubes and nano-flowers). The porous structure of the catalyst facilitates the diffusion of reactive gas in the solid-gas-gas reaction, thus enhancing the activity of the catalyst.…”

Section: Introductionmentioning

confidence: 99%

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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Electrospinning synthesis and characterization of nanofibers of Co, Ce and mixed Co-Ce oxides. Their application to oxidation reactions of diesel soot and CO

Cited by 19 publications

References 46 publications

Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

Research Progress on the Applications of Electrospun Nanofibers in Catalysis

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

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