Catalytic soot oxidation activity of Cr-doped ceria (Ce1-xCrxO2-δ) synthesized by sol-gel method with organic additives

Satya Deepika Neelapala; Harshini Dasari

doi:10.1016/j.mset.2018.06.009

Catalytic soot oxidation activity of Cr-doped ceria (Ce_1-xCr_xO_2-δ) synthesized by sol-gel method with organic additives

Satya Deepika Neelapala
, Harshini Dasari^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Cr-doped ceria catalysts (Ce_1-xCr_xO_2-δ: x = 0.05 to 0.25) were prepared by sol-gel synthesis using glucose and fructose as organic additives. The structural and morphological properties were investigated by XRD, BET surface area, Raman and SEM analysis. Catalytic soot oxidation activity of the samples was analyzed by thermogravimetric analysis. XRD results established the evidence for the formation of Ce_1-xCr_xO_2-δ solid solutions and Cr₂O₃ formation had taken place when the dopant level is x ≥ 0.15. Pure ceria possessed higher surface area when compared to Cr-doped samples due to agglomeration as evidenced by SEM analysis. Raman analysis proved the formation of fluorite phase and also oxygen vacancies. Among the synthesized catalysts pure and Cr-doped exhibited superior catalytic activities when compared to uncatalysed soot. These materials can be used for fabricating effective DPF regeneration systems which require lesser energy consumption.

Original language	English
Pages (from-to)	155-159
Number of pages	5
Journal	Materials Science for Energy Technologies
Volume	1
Issue number	2
DOIs	https://doi.org/10.1016/j.mset.2018.06.009
Publication status	Published - 12-2018

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

All Science Journal Classification (ASJC) codes

Chemical Engineering (miscellaneous)
Fuel Technology
Renewable Energy, Sustainability and the Environment
Materials Science (miscellaneous)

Access to Document

10.1016/j.mset.2018.06.009

Cite this

@article{fd81b40fd6a640459d544fec0a9390ef,

title = "Catalytic soot oxidation activity of Cr-doped ceria (Ce1-xCrxO2-δ) synthesized by sol-gel method with organic additives",

abstract = "Cr-doped ceria catalysts (Ce1-xCrxO2-δ: x = 0.05 to 0.25) were prepared by sol-gel synthesis using glucose and fructose as organic additives. The structural and morphological properties were investigated by XRD, BET surface area, Raman and SEM analysis. Catalytic soot oxidation activity of the samples was analyzed by thermogravimetric analysis. XRD results established the evidence for the formation of Ce1-xCrxO2-δ solid solutions and Cr2O3 formation had taken place when the dopant level is x ≥ 0.15. Pure ceria possessed higher surface area when compared to Cr-doped samples due to agglomeration as evidenced by SEM analysis. Raman analysis proved the formation of fluorite phase and also oxygen vacancies. Among the synthesized catalysts pure and Cr-doped exhibited superior catalytic activities when compared to uncatalysed soot. These materials can be used for fabricating effective DPF regeneration systems which require lesser energy consumption.",

author = "Neelapala, \{Satya Deepika\} and Harshini Dasari",

note = "Funding Information: This project was supported by Korea Institute of Science and Technology , the Republic of Korea under KIST School Partnership project with the project code 2Z05280-18- 007. Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = dec,

doi = "10.1016/j.mset.2018.06.009",

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T1 - Catalytic soot oxidation activity of Cr-doped ceria (Ce1-xCrxO2-δ) synthesized by sol-gel method with organic additives

AU - Neelapala, Satya Deepika

AU - Dasari, Harshini

N1 - Funding Information: This project was supported by Korea Institute of Science and Technology , the Republic of Korea under KIST School Partnership project with the project code 2Z05280-18- 007. Publisher Copyright: © 2018

PY - 2018/12

Y1 - 2018/12

N2 - Cr-doped ceria catalysts (Ce1-xCrxO2-δ: x = 0.05 to 0.25) were prepared by sol-gel synthesis using glucose and fructose as organic additives. The structural and morphological properties were investigated by XRD, BET surface area, Raman and SEM analysis. Catalytic soot oxidation activity of the samples was analyzed by thermogravimetric analysis. XRD results established the evidence for the formation of Ce1-xCrxO2-δ solid solutions and Cr2O3 formation had taken place when the dopant level is x ≥ 0.15. Pure ceria possessed higher surface area when compared to Cr-doped samples due to agglomeration as evidenced by SEM analysis. Raman analysis proved the formation of fluorite phase and also oxygen vacancies. Among the synthesized catalysts pure and Cr-doped exhibited superior catalytic activities when compared to uncatalysed soot. These materials can be used for fabricating effective DPF regeneration systems which require lesser energy consumption.

AB - Cr-doped ceria catalysts (Ce1-xCrxO2-δ: x = 0.05 to 0.25) were prepared by sol-gel synthesis using glucose and fructose as organic additives. The structural and morphological properties were investigated by XRD, BET surface area, Raman and SEM analysis. Catalytic soot oxidation activity of the samples was analyzed by thermogravimetric analysis. XRD results established the evidence for the formation of Ce1-xCrxO2-δ solid solutions and Cr2O3 formation had taken place when the dopant level is x ≥ 0.15. Pure ceria possessed higher surface area when compared to Cr-doped samples due to agglomeration as evidenced by SEM analysis. Raman analysis proved the formation of fluorite phase and also oxygen vacancies. Among the synthesized catalysts pure and Cr-doped exhibited superior catalytic activities when compared to uncatalysed soot. These materials can be used for fabricating effective DPF regeneration systems which require lesser energy consumption.

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