Toluene abatement on Ag-CeO2/SBA-15 catalysts: synergistic effect of silver and ceria

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Toluene abatement on Ag-CeO₂/SBA-15 catalysts: synergistic effect of silver and ceria. / Mikheeva, N. N.; Zaikovskii, V. I.; Larichev, Y. V. et al.

In: Materials Today Chemistry, Vol. 21, 100530, 08.2021.

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

BibTeX

@article{a15e3278cf284eecb0ee86253658129b,

title = "Toluene abatement on Ag-CeO2/SBA-15 catalysts: synergistic effect of silver and ceria",

abstract = "As a typical volatile organic compound, toluene is a hazardous material for human health and the environment, and currently, the development of catalysts for its oxidation into CO2 and water is crucial. The series of Ag-CeO2/SBA-15 catalysts is synthesized by wetness impregnation techniques and characterized by a number of physical-chemical methods (nitrogen [N2] physisorption, small angle X-ray scattering [SAXS], transmission electron microscopy [TEM], and temperature-programmed reduction [TPR]). The toluene sorption and catalytic properties in toluene oxidation are studied. Small silver [Ag] and cerium oxide [ceria, CeO2] particles with sizes below 3 nm are predominantly formed in the ordered structure of Santa Barbara Amorphous-15 [SBA-15]. The interactions between the Ag and CeO2 nanoparticles are established. Temperature-programmed desorption of toluene [TPD-C7H8] analysis shows that physical adsorption of toluene occurs on pristine SBA-15 material, while the introduction of either silver or ceria to SBA-15 leads to the appearance of additional strongly bound chemisorbed toluene on such sites. When both Ag and CeO2 are introduced, only chemisorbed toluene is formed over the Ag-CeO2/SBA-15 catalyst, and the highest catalytic activity in toluene oxidation is observed over this catalyst (T98% = 233 °C, 0.2% C6H5CH3) that is attributed to the synergistic effect of ceria [CeO2] and silver [Ag].",

keywords = "Ag-CeOinterface, Silver catalysts, Toluene chemisorption, Toluene oxidation, VOCs",

author = "Mikheeva, {N. N.} and Zaikovskii, {V. I.} and Larichev, {Y. V.} and Mamontov, {G. V.}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = aug,

doi = "10.1016/j.mtchem.2021.100530",

language = "English",

volume = "21",

journal = "Materials Today Chemistry",

issn = "2468-5194",

publisher = "Elsevier Ltd",

}

RIS

TY - JOUR

T1 - Toluene abatement on Ag-CeO2/SBA-15 catalysts: synergistic effect of silver and ceria

AU - Mikheeva, N. N.

AU - Zaikovskii, V. I.

AU - Larichev, Y. V.

AU - Mamontov, G. V.

PY - 2021/8

Y1 - 2021/8

N2 - As a typical volatile organic compound, toluene is a hazardous material for human health and the environment, and currently, the development of catalysts for its oxidation into CO2 and water is crucial. The series of Ag-CeO2/SBA-15 catalysts is synthesized by wetness impregnation techniques and characterized by a number of physical-chemical methods (nitrogen [N2] physisorption, small angle X-ray scattering [SAXS], transmission electron microscopy [TEM], and temperature-programmed reduction [TPR]). The toluene sorption and catalytic properties in toluene oxidation are studied. Small silver [Ag] and cerium oxide [ceria, CeO2] particles with sizes below 3 nm are predominantly formed in the ordered structure of Santa Barbara Amorphous-15 [SBA-15]. The interactions between the Ag and CeO2 nanoparticles are established. Temperature-programmed desorption of toluene [TPD-C7H8] analysis shows that physical adsorption of toluene occurs on pristine SBA-15 material, while the introduction of either silver or ceria to SBA-15 leads to the appearance of additional strongly bound chemisorbed toluene on such sites. When both Ag and CeO2 are introduced, only chemisorbed toluene is formed over the Ag-CeO2/SBA-15 catalyst, and the highest catalytic activity in toluene oxidation is observed over this catalyst (T98% = 233 °C, 0.2% C6H5CH3) that is attributed to the synergistic effect of ceria [CeO2] and silver [Ag].

AB - As a typical volatile organic compound, toluene is a hazardous material for human health and the environment, and currently, the development of catalysts for its oxidation into CO2 and water is crucial. The series of Ag-CeO2/SBA-15 catalysts is synthesized by wetness impregnation techniques and characterized by a number of physical-chemical methods (nitrogen [N2] physisorption, small angle X-ray scattering [SAXS], transmission electron microscopy [TEM], and temperature-programmed reduction [TPR]). The toluene sorption and catalytic properties in toluene oxidation are studied. Small silver [Ag] and cerium oxide [ceria, CeO2] particles with sizes below 3 nm are predominantly formed in the ordered structure of Santa Barbara Amorphous-15 [SBA-15]. The interactions between the Ag and CeO2 nanoparticles are established. Temperature-programmed desorption of toluene [TPD-C7H8] analysis shows that physical adsorption of toluene occurs on pristine SBA-15 material, while the introduction of either silver or ceria to SBA-15 leads to the appearance of additional strongly bound chemisorbed toluene on such sites. When both Ag and CeO2 are introduced, only chemisorbed toluene is formed over the Ag-CeO2/SBA-15 catalyst, and the highest catalytic activity in toluene oxidation is observed over this catalyst (T98% = 233 °C, 0.2% C6H5CH3) that is attributed to the synergistic effect of ceria [CeO2] and silver [Ag].

KW - Ag-CeOinterface

KW - Silver catalysts

KW - Toluene chemisorption

KW - Toluene oxidation

KW - VOCs

UR - http://www.scopus.com/inward/record.url?scp=85111330144&partnerID=8YFLogxK

U2 - 10.1016/j.mtchem.2021.100530

DO - 10.1016/j.mtchem.2021.100530

M3 - Article

AN - SCOPUS:85111330144

VL - 21

JO - Materials Today Chemistry

JF - Materials Today Chemistry

SN - 2468-5194

M1 - 100530

ER -

ID: 29292479