Controlled synthesis of ordered mesoporous TiO2–ZrO2 supported CeSn oxides catalyst for the elimination of 1,2-dichlorobenzene

Wu, Shilin; Zhao, Haijun; Tang, Zhicheng; Zhang, Jiyi

doi:10.1016/j.micromeso.2020.110214

Cited by 21 publications

(15 citation statements)

References 61 publications

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“…The peak value below 200 °C was assigned to the weak acid sites, and the peak value at 200–400 °C was vested in the moderate acid sites. The peak value above 400 °C indicated the presence of strong acid sites [58,59] . The peak values of Pt/CeO 2 −R catalyst at 149 °C, 276 °C and 476 °C were attributed to weak acid site, medium acid site and strong acid site respectively, which was seen from the Figure 8.…”

Section: Resultsmentioning

confidence: 79%

“…The peak value above 400 °C indicated the presence of strong acid sites. [58,59] The peak values of Pt/CeO 2 À R catalyst at 149 °C, 276 °C and 476 °C were attributed to weak acid site, medium acid site and strong acid site respectively, which was seen from the Figure 8. The peak value of Pt@CeO 2 À B catalyst at 130 °C was weak acid site, the peak value at 233 °C was medium acid site, and the peak value at 471 °C was allocated to strong acid site.…”

Section: Analysis Of Redox Capacity and Acidity Of Catalystsmentioning

confidence: 92%

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Construction of a Nanorod Structure‐Confined Pt@CeO₂ Catalyst by an In‐Situ Encapsulation Strategy for Low‐Temperature Catalytic Oxidation of Toluene

Han

Dong

et al. 2022

Chemistry An Asian Journal

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In this work, Pt@CeO 2 catalysts with a nanorod structure (Pt@CeO 2 À R) and a bunch structure (Pt@CeO 2 À B) were synthesized through an in-situ encapsulation strategy of Pt species in Ce-MOFs, respectively. It was discovered that the Pt@CeO 2 À R catalyst possessed the best catalytic performance for toluene catalytic combustion, and this result was mainly caused by the confinement of Pt nanoparticles in CeÀ MOFs, which was related to the chemical state of Pt species, redox ability, and the amount of active oxygen species. The Pt@CeO 2 À R catalyst contained more Ce 3 + species, rich Pt 4 + species, and abundant active oxygen species due to the existence of the confined effect, which was conducive to promote catalytic oxidation of toluene. In addition, the Pt@CeO 2 À R catalyst also exhibited more redox ability, which may speed up the catalytic reaction rates. On the contrary, the Pt/CeO 2 À R catalyst was synthesized through a simple impregnation method and exhibited the poor activity for toluene catalytic combustion due to poor Pt 4 + species and active oxygen species. Therefore, this work provides a feasible experimental basis for the study of different morphologies and encapsulated metal nanoparticles.

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Section: Resultsmentioning

confidence: 79%

Section: Analysis Of Redox Capacity and Acidity Of Catalystsmentioning

confidence: 92%

Construction of a Nanorod Structure‐Confined Pt@CeO₂ Catalyst by an In‐Situ Encapsulation Strategy for Low‐Temperature Catalytic Oxidation of Toluene

Han

Dong

et al. 2022

Chemistry An Asian Journal

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“…Pore structure distribution of Ru/TiCeO x -XPh is analyzed by N 2 adsorption–desorption technology (Figure ). All Ru/TiCeO x -XPh catalysts show typical type IV isotherms with type I hysteresis loops signifying the cylindrical pores with uniform diameter distribution at both ends . A more quantitative data of Ru/TiCeO x -XPh catalysts characters is shown in Table .…”

Section: Resultsmentioning

confidence: 99%

“…The vibration at 463 cm –1 is the F 2g mode of the CeO 2 fluorite phase . For TiO 2 , the single Raman active mode of the A-TiO 2 anatase phase can be observed at 143 cm –1 . When Ce ion is added into the A-TiO 2 lattice structure, the single Raman active mode of E g shifts to 163 cm –1 due to the distortion of the A-TiO 2 anatase phase structure in Figure b.…”

Section: Resultsmentioning

confidence: 99%

“…Mesoporous TiO 2 –CeO 2 support was synthesized by the evaporation-induced self-assembly (EISA) method. , A 3.51 g P123 was ultrasonically dispersed in 35 mL of absolute ethanol, and then 6.52 g cerium nitrate and 4.35 g tetraisopropyl titanate (TTIP) were added with vigorous stirring for 8 h, and 3 mL HCl was added in the process. The stirred solution was loaded in a Petri dish and put in an incubator at 40 °C and 60% humidity for 6 days.…”

Section: Experimental Stagementioning

confidence: 99%

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Construction of Superhydrophobic Ru/TiCeO_x Catalysts for the Enhanced Water Resistance of o-Dichlorobenzene Catalytic Combustion

Zhao

Dong

et al. 2021

ACS Appl. Mater. Interfaces

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In this paper, a simple method to enhance the H 2 O resistance of Ru/TiCeO x catalysts for o-DCB catalytic combustion by constructing superhydrophobic coating of phenyltriethoxysilane (PhTES) was proposed. The effect of PhTES content on the pore structure, specific surface area, H 2 O resistance, contact angle (CA) value, and catalytic activity of the catalyst was studied. When water was added, the pristine Ru/TiCeO x catalytic activity decreased by about 26%, while the Ru/TiCeO x -16Ph activity hardly decreased. According to the analysis results of XRD, FT-IR, SEM, and CA, PhTES was closely coated on the surface of Ru/TiCeO x to produce a more hydrophobic surface. The Ru/TiCeO x -16Ph catalyst had strong hydrophobicity, and the contact angle was 159.8°, which not only significantly enhanced the water resistance and self-cleaning activity but also showed a good elimination temperature (T 90 = 341 °C) for the o-DCB. The enhanced water resistance of Ru/TiCeO x -XPh catalysts resulted from the reduction of the active centers consumed (water occupying oxygen vacancy sites). The reaction mechanism of the Ru/TiCeO x -16Ph catalyst based on surface oxygen species and the Deacon reaction was proposed. This method provided new idea for the design of a new water-resistant composite catalyst and promoted the practical application of the composite catalyst in the catalytic oxidation of o-DCB.

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CO2 utilization for methanol production: a review on the safety concerns and countermeasures

Feng,

Gu,

Dong

et al. 2024

Environ Sci Pollut Res

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Controlled synthesis of ordered mesoporous TiO2–ZrO2 supported CeSn oxides catalyst for the elimination of 1,2-dichlorobenzene

Cited by 21 publications

References 61 publications

Construction of a Nanorod Structure‐Confined Pt@CeO₂ Catalyst by an In‐Situ Encapsulation Strategy for Low‐Temperature Catalytic Oxidation of Toluene

Construction of a Nanorod Structure‐Confined Pt@CeO₂ Catalyst by an In‐Situ Encapsulation Strategy for Low‐Temperature Catalytic Oxidation of Toluene

Construction of Superhydrophobic Ru/TiCeO_x Catalysts for the Enhanced Water Resistance of o-Dichlorobenzene Catalytic Combustion

CO2 utilization for methanol production: a review on the safety concerns and countermeasures

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Controlled synthesis of ordered mesoporous TiO2–ZrO2 supported CeSn oxides catalyst for the elimination of 1,2-dichlorobenzene

Cited by 21 publications

References 61 publications

Construction of a Nanorod Structure‐Confined Pt@CeO2 Catalyst by an In‐Situ Encapsulation Strategy for Low‐Temperature Catalytic Oxidation of Toluene

Construction of a Nanorod Structure‐Confined Pt@CeO2 Catalyst by an In‐Situ Encapsulation Strategy for Low‐Temperature Catalytic Oxidation of Toluene

Construction of Superhydrophobic Ru/TiCeOx Catalysts for the Enhanced Water Resistance of o-Dichlorobenzene Catalytic Combustion

CO2 utilization for methanol production: a review on the safety concerns and countermeasures

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Construction of a Nanorod Structure‐Confined Pt@CeO₂ Catalyst by an In‐Situ Encapsulation Strategy for Low‐Temperature Catalytic Oxidation of Toluene

Construction of a Nanorod Structure‐Confined Pt@CeO₂ Catalyst by an In‐Situ Encapsulation Strategy for Low‐Temperature Catalytic Oxidation of Toluene

Construction of Superhydrophobic Ru/TiCeO_x Catalysts for the Enhanced Water Resistance of o-Dichlorobenzene Catalytic Combustion