The promotional effects of CsNO3 on Sn-Co-O solid solution for soot combustion: Using XRD extrapolation method to elucidate the structure-reactivity relationship

Li, Rui; Feng, Xiaohui; Xu, Xianglan; Duan, Junyi; Ma, Jun; Fang, Xiuzhong; Xu, Junwei; Wang, Xiang

doi:10.1016/j.apsusc.2020.145363

Cited by 20 publications

(15 citation statements)

References 71 publications

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“…Our former results under the same condition has shown that without using any catalyst, the thermal combustion of soot resulted in T i , T p and T c of 515, 645 and 705 °C, and CO 2 selectivity of 68% [22]. This indicates that all the mullite catalysts can significantly accelerate the rate of soot combustion.…”

Section: Activity Evaluationsupporting

confidence: 52%

“…3. Notably, according to previous related work [22], using a gas flow rate of 30 mL min −1 over 50 mg catalyst, which resulted into a space velocity of 36,000 mL h −1 g −1 , is an appropriate condition for the evaluation of soot combustion activity in diesel engine exhausts. The TPO profiles in Fig.…”

Section: Activity Evaluationmentioning

confidence: 99%

“…To see directly the reactivity between soot particles and the active oxygen sites on the mullites' surfaces, soot-TPR experiments have been executed for the samples in the absence of gas phase O 2 . Generally, the soot reduction peak below 550 °C is defined as the active oxygen sites beneficial to soot combustion [22,28]. As demonstrated in Fig.…”

Section: Soot-tpr Studiesmentioning

confidence: 99%

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Study on the Structure–Reactivity Relationship of LnMn2O5 (Ln = La, Pr, Sm, Y) Mullite Catalysts for Soot Combustion

Feng

Zhang

et al. 2020

Chemistry Africa

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To understand systematically the structure and reactivity relationship of AB 2 O 5 mullite catalysts under the same condition, and with the objective to obtain more feasible catalysts, a series of mullites with Mn cations at B site but with changed La 3+ , Pr 3+ , Sm 3+ and Y 3+ at A site were fabricated and applied to soot combustion, and characterized by different means. A pure phase orthorhombic mullite structure has been successfully formed in all the samples. However, the radius of the rare earth cations at A site can evidently influence the crystalline structures. As a result, the surface structure and reactivity of the samples can be impacted. A mullite catalyst with higher soot combustion activity generally owns a larger quantity of more reactive surface oxygen anions/sites, which results in a soot combustion activity sequence of SmMn 2 O 5 > YMn 2 O 5 > PrMn 2 O 5 > LaMn 2 O 5. In conclusion, the amount and reactivity of the surface active oxygen species control the soot oxidation activity of the mullite catalysts.

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Section: Activity Evaluationsupporting

confidence: 52%

Section: Activity Evaluationmentioning

confidence: 99%

Section: Soot-tpr Studiesmentioning

confidence: 99%

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Study on the Structure–Reactivity Relationship of LnMn2O5 (Ln = La, Pr, Sm, Y) Mullite Catalysts for Soot Combustion

Feng

Zhang

et al. 2020

Chemistry Africa

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“…The CsNO 3 can be readily dispersed onto SiO 2 carriers by low temperature calcination due to the low melting point of 414 °C for CsNO 3 . However, the CsNO 3 molecule was thermally very stable, which required a high temperature over 600 °C to be decomposed . Hence, it was estimated that a part of CsNO 3 was dispersed on the surface of SiO 2 without decomposition under a calcination temperature of 500 °C in this study.…”

Section: Resultsmentioning

confidence: 93%

Influence of Al Oxides on Cs-SiO₂ Catalysts for Vapor Phase Aldol Condensation of Methyl Acetate and Formaldehyde

Deng

Yan

Ran

et al. 2022

Ind. Eng. Chem. Res.

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A novel Al-promoted Cs-SiO 2 catalyst was synthesized via impregnation methods and applied in the aldol condensation reaction of methyl acetate (Ma) with formaldehyde (FA) to synthesize methyl acrylate (MA). Promotion effects of Al oxides on Cs-SiO 2 catalysts were systematically investigated. The physical−chemical properties of synthesized catalysts were characterized through XRD, FT-IR, EDS mapping, N 2 physical adsorption, NH 3 -/CO 2 -TPD, Py-IR, XPS, solid-state MAS NMR, and TG. Subsequently, the catalytic performance of fabricated catalysts was evaluated in a fixed-bed microreactor. Reaction parameters, Cs 2 O and Al 2 O 3 contents, as well as calcination temperature were optimized. The evaluation of catalytic stability was conducted under optimal reaction conditions. As a result, the introduction of Al species into Cs-SiO 2 endowed the Al−Cs−SiO 2 catalyst with superior catalytic performance and good reusability.

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“…Compared with single component metal oxide supports, these supports with multiple metal cations might have more complicated and stronger interactions with the supported active components, hence creating more abundant interfacial M–O–Support bonds and eventually improving the reaction performance of the catalysts. 19–22…”

Section: Introductionmentioning

confidence: 99%

Study on the monolayer dispersion behavior of SnO₂ on ZSM-5 for NO_x-SCR by C₃H₆: the remarkable promotional effects of air plasma treatment

Zhang

Lai

Liu

et al. 2022

Phys. Chem. Chem. Phys.

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The promotional effects of CsNO3 on Sn-Co-O solid solution for soot combustion: Using XRD extrapolation method to elucidate the structure-reactivity relationship

Cited by 20 publications

References 71 publications

Study on the Structure–Reactivity Relationship of LnMn2O5 (Ln = La, Pr, Sm, Y) Mullite Catalysts for Soot Combustion

Study on the Structure–Reactivity Relationship of LnMn2O5 (Ln = La, Pr, Sm, Y) Mullite Catalysts for Soot Combustion

Influence of Al Oxides on Cs-SiO₂ Catalysts for Vapor Phase Aldol Condensation of Methyl Acetate and Formaldehyde

Study on the monolayer dispersion behavior of SnO₂ on ZSM-5 for NO_x-SCR by C₃H₆: the remarkable promotional effects of air plasma treatment

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The promotional effects of CsNO3 on Sn-Co-O solid solution for soot combustion: Using XRD extrapolation method to elucidate the structure-reactivity relationship

Cited by 20 publications

References 71 publications

Study on the Structure–Reactivity Relationship of LnMn2O5 (Ln = La, Pr, Sm, Y) Mullite Catalysts for Soot Combustion

Study on the Structure–Reactivity Relationship of LnMn2O5 (Ln = La, Pr, Sm, Y) Mullite Catalysts for Soot Combustion

Influence of Al Oxides on Cs-SiO2 Catalysts for Vapor Phase Aldol Condensation of Methyl Acetate and Formaldehyde

Study on the monolayer dispersion behavior of SnO2 on ZSM-5 for NOx-SCR by C3H6: the remarkable promotional effects of air plasma treatment

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Influence of Al Oxides on Cs-SiO₂ Catalysts for Vapor Phase Aldol Condensation of Methyl Acetate and Formaldehyde

Study on the monolayer dispersion behavior of SnO₂ on ZSM-5 for NO_x-SCR by C₃H₆: the remarkable promotional effects of air plasma treatment