Catalytic removal of formaldehyde at room temperature over supported gold catalysts

Bing Bing Chen; Chuan Shi; Mark Crocker; Yu Wang; Ai Min Zhu

doi:10.1016/j.apcatb.2012.11.028

Catalytic removal of formaldehyde at room temperature over supported gold catalysts

Bing Bing Chen
, Chuan Shi
, Mark Crocker
, Yu Wang
, Ai Min Zhu

Chemistry

Producción científica: Article › revisión exhaustiva

274 Citas (Scopus)

Resumen

Two kinds of Au/CeO₂, prepared by deposition-precipitation (DP) using urea (U) or NaOH (N) as precipitants were investigated as catalysts for HCHO oxidation. H₂-TPR and XPS techniques were used to characterize the Au/CeO₂ samples. Due to the generation of increased amounts of active surface oxygen species resulting from the strong Au-CeO₂ interaction, the Au/CeO₂ (DPU) catalyst showed higher activity than the DPN catalyst, achieving 100% conversion of HCHO into CO₂ and H₂O at room temperature, even in the presence of water and at high GHSV (143,000h^-1); moreover, the conversion was stable for at least 60h. The reaction mechanism and the rate limiting steps for HCHO oxidation over the Au/CeO₂ catalysts were identified by means of in situ DRIFTS studies. The influence of oxygen and water on the formation and consumption of the formate reaction intermediates was also investigated. Results suggest that Au/CeO₂ (DPU) is a promising catalyst for HCHO removal under real world conditions.

Idioma original	English
Páginas (desde-hasta)	245-255
Número de páginas	11
Publicación	Applied Catalysis B: Environmental
Volumen	132-133
DOI	https://doi.org/10.1016/j.apcatb.2012.11.028
Estado	Published - mar 7 2013

Nota bibliográfica

Funding Information:
The work was supported by the National Natural Foundation of China (Nos. 20573014 and 21073024 ), Natural Science Foundation of Liaoning Province (No. 201102034 ) and by the Program for New Century Excellent Talents in University ( NCET-07-0136 ), as well as by the Fundamental Research Funds for the Central Universities (No. DUT12LK23 ).

Financiación

The work was supported by the National Natural Foundation of China (Nos. 20573014 and 21073024 ), Natural Science Foundation of Liaoning Province (No. 201102034 ) and by the Program for New Century Excellent Talents in University ( NCET-07-0136 ), as well as by the Fundamental Research Funds for the Central Universities (No. DUT12LK23 ).

Financiadores	Número del financiador
National Natural Science Foundation of China (NSFC)	20573014, 21073024
Program for New Century Excellent Talents in University	NCET-07-0136
Program for New Century Excellent Talents in University
Natural Science Foundation of Liaoning Province	201102034
Natural Science Foundation of Liaoning Province
Fundamental Research Funds for the Central Universities

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

Acceder al documento

10.1016/j.apcatb.2012.11.028

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@article{8699accc3b5844ca883eee552b15240e,

title = "Catalytic removal of formaldehyde at room temperature over supported gold catalysts",

abstract = "Two kinds of Au/CeO2, prepared by deposition-precipitation (DP) using urea (U) or NaOH (N) as precipitants were investigated as catalysts for HCHO oxidation. H2-TPR and XPS techniques were used to characterize the Au/CeO2 samples. Due to the generation of increased amounts of active surface oxygen species resulting from the strong Au-CeO2 interaction, the Au/CeO2 (DPU) catalyst showed higher activity than the DPN catalyst, achieving 100\% conversion of HCHO into CO2 and H2O at room temperature, even in the presence of water and at high GHSV (143,000h-1); moreover, the conversion was stable for at least 60h. The reaction mechanism and the rate limiting steps for HCHO oxidation over the Au/CeO2 catalysts were identified by means of in situ DRIFTS studies. The influence of oxygen and water on the formation and consumption of the formate reaction intermediates was also investigated. Results suggest that Au/CeO2 (DPU) is a promising catalyst for HCHO removal under real world conditions.",

keywords = "Au/CeO, Catalytic oxidation, Formaldehyde, Room temperature",

author = "Chen, \{Bing Bing\} and Chuan Shi and Mark Crocker and Yu Wang and Zhu, \{Ai Min\}",

note = "Funding Information: The work was supported by the National Natural Foundation of China (Nos. 20573014 and 21073024 ), Natural Science Foundation of Liaoning Province (No. 201102034 ) and by the Program for New Century Excellent Talents in University ( NCET-07-0136 ), as well as by the Fundamental Research Funds for the Central Universities (No. DUT12LK23 ). ",

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doi = "10.1016/j.apcatb.2012.11.028",

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AU - Chen, Bing Bing

AU - Shi, Chuan

AU - Crocker, Mark

AU - Wang, Yu

AU - Zhu, Ai Min

N1 - Funding Information: The work was supported by the National Natural Foundation of China (Nos. 20573014 and 21073024 ), Natural Science Foundation of Liaoning Province (No. 201102034 ) and by the Program for New Century Excellent Talents in University ( NCET-07-0136 ), as well as by the Fundamental Research Funds for the Central Universities (No. DUT12LK23 ).

PY - 2013/3/7

Y1 - 2013/3/7

N2 - Two kinds of Au/CeO2, prepared by deposition-precipitation (DP) using urea (U) or NaOH (N) as precipitants were investigated as catalysts for HCHO oxidation. H2-TPR and XPS techniques were used to characterize the Au/CeO2 samples. Due to the generation of increased amounts of active surface oxygen species resulting from the strong Au-CeO2 interaction, the Au/CeO2 (DPU) catalyst showed higher activity than the DPN catalyst, achieving 100% conversion of HCHO into CO2 and H2O at room temperature, even in the presence of water and at high GHSV (143,000h-1); moreover, the conversion was stable for at least 60h. The reaction mechanism and the rate limiting steps for HCHO oxidation over the Au/CeO2 catalysts were identified by means of in situ DRIFTS studies. The influence of oxygen and water on the formation and consumption of the formate reaction intermediates was also investigated. Results suggest that Au/CeO2 (DPU) is a promising catalyst for HCHO removal under real world conditions.

AB - Two kinds of Au/CeO2, prepared by deposition-precipitation (DP) using urea (U) or NaOH (N) as precipitants were investigated as catalysts for HCHO oxidation. H2-TPR and XPS techniques were used to characterize the Au/CeO2 samples. Due to the generation of increased amounts of active surface oxygen species resulting from the strong Au-CeO2 interaction, the Au/CeO2 (DPU) catalyst showed higher activity than the DPN catalyst, achieving 100% conversion of HCHO into CO2 and H2O at room temperature, even in the presence of water and at high GHSV (143,000h-1); moreover, the conversion was stable for at least 60h. The reaction mechanism and the rate limiting steps for HCHO oxidation over the Au/CeO2 catalysts were identified by means of in situ DRIFTS studies. The influence of oxygen and water on the formation and consumption of the formate reaction intermediates was also investigated. Results suggest that Au/CeO2 (DPU) is a promising catalyst for HCHO removal under real world conditions.

KW - Au/CeO

KW - Catalytic oxidation

KW - Formaldehyde

KW - Room temperature

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U2 - 10.1016/j.apcatb.2012.11.028

DO - 10.1016/j.apcatb.2012.11.028

M3 - Article

AN - SCOPUS:84871725876

SN - 0926-3373

VL - 132-133

SP - 245

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JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

ER -

Catalytic removal of formaldehyde at room temperature over supported gold catalysts

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Financiación

ASJC Scopus subject areas

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