Promotion Effects of Cesium on Perovskite Oxides for Catalytic Soot Combustion

Shao, Wen; Wang, Zhongpeng; Zhang, Xiaomin; Wang, Liguo; Ma, Zhewen; Li, Qian; Zhang, Zhaoliang

doi:10.1007/s10562-016-1764-z

Cited by 25 publications

(31 citation statements)

References 50 publications

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“…All T m data are shown in Table 3. The highest difference in T m , at approximately 26 • C, occurred between the Mn1 and Mn0 catalysts, and is similar to previous reports, where different doped perovskites were used [16,29,30]. In addition, the most effective catalyst tested in this study is that one doped with 1 wt % of Mn (Mn1), which lowered the catalytic combustion of soot to 591 • C. This result is comparable with different perovskites where the T m of soot combustion reached temperatures above 500 • C [9,22,31,32].…”

Section: Resultssupporting

confidence: 90%

“…Based on these results, it is expected that perovskites synthesized in this work can be used as catalysts in the soot combustion reaction. These results are slightly higher than values previously reported for perovskite type catalysts for soot oxidation reactions [8,16,22], which is attributed to the dendritic morphology observed in Figure 2. Based on these results, it is expected that perovskites synthesized in this work can be used as catalysts in the soot combustion reaction.…”

Section: Resultscontrasting

confidence: 69%

“…A new alternative is the use of transition metal oxides with perovskite structure which have been used as catalysts for soot and volatile organic compounds [7][8][9][10][11][12][13][14][15][16] or photocatalysts mainly related with the remotion of organic compounds [17,18]. Most perovskites, in particular SrTiO 3 , are characterized by high thermal stability, oxidative properties, and low cost, which make them good candidates for catalysts [7].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Dopant Loading on the Structural and Catalytic Properties of Mn-Doped SrTiO3 Catalysts for Catalytic Soot Combustion

et al. 2018

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Soot particles have been associated with respiratory diseases and cancer. To decrease these emissions, perovskite-mixed oxides have been proposed due to their thermal stability and redox surface properties. In this work, SrTiO 3 doped with different amounts of Mn were synthesized by the hydrothermal method and tested for soot combustion. Results show that at low Mn content, structural distortion, and higher O ads /O lat ratio were observed which was attributed to the high content of Mn 3+ in Ti sites. On the other hand, increasing the Mn content led to surface segregation of manganese oxide. All synthesized catalysts showed mesopores in the range of 32-47 nm. In the catalytic combustion of soot, the samples synthesized in this work lowered the combustion temperature by more than 100 • C compared with the uncatalyzed reaction. The sample doped with 1 wt % of Mn showed the best catalytic activity. The activation energy of these samples was also calculated, and the order of decreasing activation energy is as follows: uncatalyzed > Mn0 > Mn8 > Mn4 > Mn1. The best catalytic activity for Mn1 was attributed to its physicochemical properties and the mobility of the oxygen from the bulk to the surface at temperatures higher than 500 • C.

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Section: Resultssupporting

confidence: 90%

Section: Resultscontrasting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

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Effect of Dopant Loading on the Structural and Catalytic Properties of Mn-Doped SrTiO3 Catalysts for Catalytic Soot Combustion

et al. 2018

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“…The crystal sizes and lattice parameters of the respective samples are calculated and presented in Table . The crystal size was calculated from the Scherrer equation using full width at half maximum of the (222) lattice plane . The lattice parameters of the M‐doped samples were found to be increased when compared with pure Mn 2 O 3 , which can be attributable to the incorporation of higher ionic radii of dopants (Co > Cu > Ni).…”

Section: Resultsmentioning

confidence: 99%

“…The crystal size was calculated from the Scherrer equation using full width at half maximum of the (222) lattice plane. 32 The lattice parameters of the M-doped samples were found to be increased when compared with pure Mn 2 O 3 , which can be attributable to the incorporation of higher ionic radii of dopants (Co > Cu > Ni). The average crystal size of all the samples was determined to be in the range of 20-25 nm.…”

Section: Catalyst Characterizationmentioning

confidence: 87%

Enhancement of soot oxidation activity of manganese oxide (Mn₂O₃) through doping by the formation of Mn_1.9M_0.1O_3–δ (M = Co, Cu, and Ni)

Neelapala

Patnaik

Dasari

2018

Asia-Pacific J Chem Eng

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The current work describes the catalytic soot oxidation activity of metal‐doped manganese oxide (Mn1.9M0.1O3–δ; M = Co, Cu, and Ni) materials, synthesized by coprecipitation method. All the fabricated materials were characterized using X‐ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Brunauer–Emmett–Teller surface area analysis, and X‐ray photoelectron spectroscopy (XPS). XRD analysis confirmed the formation of solid solution Mn1.9M0.1O3–δ (M = Co, Cu, and Ni). M‐doped samples exhibited different morphology when compared with pure Mn2O3 as evidenced by FESEM analysis, and Co‐doped Mn2O3 possessed the highest specific surface area. XPS analysis revealed the presence of multiple oxidation states of Mn (+4, +3, and +2) and Co (+2 and +3). Soot oxidation activity tests, performed using thermogravimetric analysis, showed that Mn1.9Co0.1O3–δ exhibited better catalytic performance (T50 = 390°C) when compared with pure Mn2O3 (T50 = 490°C). The incorporation of dopants greatly enhanced the oxygen vacancies and redox properties of Mn2O3.

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Research Advances in Rare Earth Oxide‐Based Catalysts for Soot Combustion

Ma,

Guo,

Xiong

et al. 2024

ChemCatChem

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Environmental issues exert a significant influence on the human life. Soot particles have attracted attention as a major source of pollution. Significant progress has been made in the research of efficient soot combustion catalysts. The distinctive bonding properties on the 4f orbitals of rare earth elements exhibit excellent catalytic performance for soot combustion. This comprehensive review explores recent advancements in the design of catalysts based on rare earth oxides, with a specific focus on various catalytic materials (La‐based, Ce‐based, Pr‐based and other rare earth elements), synthesis methods, catalyst morphology, catalytic performance and the intricate mechanisms governing their performance in catalytic soot combustion. The activity and selectivity of different rare earth catalysts in various reaction atmospheres are also summarized in the article. Finally, the challenges associated with rare earth oxide‐based catalysts and their potential for future development in the soot combustion are highlighted. This review establishes a fundamental basis for the further design of catalytic materials that exhibit enhanced efficiency and stability.

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Promotion Effects of Cesium on Perovskite Oxides for Catalytic Soot Combustion

Cited by 25 publications

References 50 publications

Effect of Dopant Loading on the Structural and Catalytic Properties of Mn-Doped SrTiO3 Catalysts for Catalytic Soot Combustion

Effect of Dopant Loading on the Structural and Catalytic Properties of Mn-Doped SrTiO3 Catalysts for Catalytic Soot Combustion

Enhancement of soot oxidation activity of manganese oxide (Mn₂O₃) through doping by the formation of Mn_1.9M_0.1O_3–δ (M = Co, Cu, and Ni)

Research Advances in Rare Earth Oxide‐Based Catalysts for Soot Combustion

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Promotion Effects of Cesium on Perovskite Oxides for Catalytic Soot Combustion

Cited by 25 publications

References 50 publications

Effect of Dopant Loading on the Structural and Catalytic Properties of Mn-Doped SrTiO3 Catalysts for Catalytic Soot Combustion

Effect of Dopant Loading on the Structural and Catalytic Properties of Mn-Doped SrTiO3 Catalysts for Catalytic Soot Combustion

Enhancement of soot oxidation activity of manganese oxide (Mn2O3) through doping by the formation of Mn1.9M0.1O3–δ (M = Co, Cu, and Ni)

Research Advances in Rare Earth Oxide‐Based Catalysts for Soot Combustion

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Enhancement of soot oxidation activity of manganese oxide (Mn₂O₃) through doping by the formation of Mn_1.9M_0.1O_3–δ (M = Co, Cu, and Ni)