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

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

253 Scopus citations

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.

Original language	English
Pages (from-to)	245-255
Number of pages	11
Journal	Applied Catalysis B: Environmental
Volume	132-133
DOIs	https://doi.org/10.1016/j.apcatb.2012.11.028
State	Published - Mar 7 2013

Bibliographical 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 ).

Keywords

Au/CeO
Catalytic oxidation
Formaldehyde
Room temperature

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

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10.1016/j.apcatb.2012.11.028

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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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T1 - Catalytic removal of formaldehyde at room temperature over supported gold catalysts

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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JO - Applied Catalysis B: Environmental

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ER -

Catalytic removal of formaldehyde at room temperature over supported gold catalysts

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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