Research on Enhanced catalytic soot combustion performance over NiO/Co<sub>3</sub>O<sub>4</sub> within mesoporous nanosheets

SUN Honghua; SUN Biao; LI Peng; QIU Jianqiang; ZHANG Nianchen; WANG Jinguo; WANG Xiutong

doi:10.12299/jsues.22-0064

Volume 37 Issue 2

Jun. 2023

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Article Navigation > Journal of Shanghai University of Engineering Science > 2023 > 37(2): 120-127

SUN Honghua, SUN Biao, LI Peng, QIU Jianqiang, ZHANG Nianchen, WANG Jinguo, WANG Xiutong. Research on Enhanced catalytic soot combustion performance over NiO/Co3O4 within mesoporous nanosheets[J]. Journal of Shanghai University of Engineering Science, 2023, 37(2): 120-127. doi: 10.12299/jsues.22-0064

Citation:

SUN Honghua, SUN Biao, LI Peng, QIU Jianqiang, ZHANG Nianchen, WANG Jinguo, WANG Xiutong. Research on Enhanced catalytic soot combustion performance over NiO/Co₃O₄ within mesoporous nanosheets[J]. Journal of Shanghai University of Engineering Science, 2023, 37(2): 120-127. doi: 10.12299/jsues.22-0064

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Research on Enhanced catalytic soot combustion performance over NiO/Co₃O₄ within mesoporous nanosheets

doi: 10.12299/jsues.22-0064

1.
School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
2.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

Received Date: 2022-03-22
Publish Date: 2023-06-20

Abstract

Abstract

A series of NiO/Co₃O₄ catalysts within mesoporous nanosheets, synthesized by a facile hydrothermal combining wet-impregnation route, have been developed to catalyze diesel soot combustion. Results attest that, when the molar ratio of Ni/Co reached 12%, the catalyst of 12NiCo exhibited the optimal catalytic soot combustion performance, giving T_m of 347 ℃ and 100% CO₂ selectivity, which can be chiefly credited to the synergetic effect of the following factors. Firstly, the unique 2D nanosheets together with high surface area enlarged the contact interface of catalyst-soot particles. Secondly, abundant mesopores within nanosheets favored the significant decrease in mass transfer resistance and then in turn promoted the adsorption and diffusion of gas reactants. Thirdly, the enhanced reducibility by introducing NiO not merely facilitated the adsorption and activation of oxygen species to form active oxygen species, but also benefited NO oxidation to produce NO₂ with higher oxidative capability, thereby improving catalytic soot combustion performance remarkably. In addition, 12NiCo also presented the excellent reusability, demonstrating good potential in future practical applications.
- diesel exhaust,
- soot particles,
- NiO/Co₃O₄,
- mesoporous nanosheets,
- catalytic combustion

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References(23)

References

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