Gold supported on iron oxide nanodisk as efficient catalyst for the removal of toluene

Wen Han; Jiguang Deng; Shaohua Xie; Huanggen Yang; Hongxing Dai; Chak Tong AU

doi:10.1021/ie5000505

Gold supported on iron oxide nanodisk as efficient catalyst for the removal of toluene

Wen Han, Jiguang Deng^*, Shaohua Xie, Huanggen Yang, Hongxing Dai, Chak Tong AU

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

43 Citations (Scopus)

Abstract

In the present study, nanodisk-like Fe₂O₃ was first prepared using the hydrothermal method, and then its supported gold catalysts (xAu/Fe₂O₃ nanodisk, x = 0.71-6.55 wt %) were fabricated using the polyvinyl alcohol-protected reduction method. Under the reaction conditions of toluene concentration = 1000 ppm, toluene/O₂ molar ratio = 1/400, and space velocity = 20 000 mL/(g h), 6.55Au/Fe₂O ₃ nanodisk performed the best (T_50% = 200 C and T _90% = 260 C). The apparent activation energies (46-50 kJ/mol) obtained over the xAu/Fe₂O₃ nanodisk were smaller than that (65 kJ/mol) obtained over the Fe₂O₃ nanodisk for toluene oxidation. We conclude that the high oxygen adspecies concentration, good low-temperature reducibility, and strong interaction between Au nanoparticles and the Fe₂O₃ nanodisk are responsible for the high catalytic performance of the 6.55Au/Fe₂O₃ nanodisk.

Original language	English
Pages (from-to)	3486-3494
Number of pages	9
Journal	Industrial and Engineering Chemistry Research
Volume	53
Issue number	9
DOIs	https://doi.org/10.1021/ie5000505
Publication status	Published - 5 Mar 2014

Scopus Subject Areas

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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title = "Gold supported on iron oxide nanodisk as efficient catalyst for the removal of toluene",

abstract = "In the present study, nanodisk-like Fe2O3 was first prepared using the hydrothermal method, and then its supported gold catalysts (xAu/Fe2O3 nanodisk, x = 0.71-6.55 wt %) were fabricated using the polyvinyl alcohol-protected reduction method. Under the reaction conditions of toluene concentration = 1000 ppm, toluene/O2 molar ratio = 1/400, and space velocity = 20 000 mL/(g h), 6.55Au/Fe2O 3 nanodisk performed the best (T50% = 200 C and T 90% = 260 C). The apparent activation energies (46-50 kJ/mol) obtained over the xAu/Fe2O3 nanodisk were smaller than that (65 kJ/mol) obtained over the Fe2O3 nanodisk for toluene oxidation. We conclude that the high oxygen adspecies concentration, good low-temperature reducibility, and strong interaction between Au nanoparticles and the Fe2O3 nanodisk are responsible for the high catalytic performance of the 6.55Au/Fe2O3 nanodisk.",

author = "Wen Han and Jiguang Deng and Shaohua Xie and Huanggen Yang and Hongxing Dai and AU, {Chak Tong}",

note = "The work described was supported by the NSF of China (21103005 and 21377008), 2013 Education and Teaching−Postgraduate Students Education−2011 Beijing Municipality Excellent Ph.D. Thesis Supervisor (20111000501), 2013 Education and Teaching−Postgraduate Students Cultivation−National Excellent Ph.D. Thesis Supervisor and Cultivation Base Construction (005000542513551), and the Foundation on the Creative Research Team Construction Promotion Project of Beijing Municipal Institutions.",

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doi = "10.1021/ie5000505",

language = "English",

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AU - Han, Wen

AU - Deng, Jiguang

AU - Xie, Shaohua

AU - Yang, Huanggen

AU - Dai, Hongxing

AU - AU, Chak Tong

N1 - The work described was supported by the NSF of China (21103005 and 21377008), 2013 Education and Teaching−Postgraduate Students Education−2011 Beijing Municipality Excellent Ph.D. Thesis Supervisor (20111000501), 2013 Education and Teaching−Postgraduate Students Cultivation−National Excellent Ph.D. Thesis Supervisor and Cultivation Base Construction (005000542513551), and the Foundation on the Creative Research Team Construction Promotion Project of Beijing Municipal Institutions.

PY - 2014/3/5

Y1 - 2014/3/5

N2 - In the present study, nanodisk-like Fe2O3 was first prepared using the hydrothermal method, and then its supported gold catalysts (xAu/Fe2O3 nanodisk, x = 0.71-6.55 wt %) were fabricated using the polyvinyl alcohol-protected reduction method. Under the reaction conditions of toluene concentration = 1000 ppm, toluene/O2 molar ratio = 1/400, and space velocity = 20 000 mL/(g h), 6.55Au/Fe2O 3 nanodisk performed the best (T50% = 200 C and T 90% = 260 C). The apparent activation energies (46-50 kJ/mol) obtained over the xAu/Fe2O3 nanodisk were smaller than that (65 kJ/mol) obtained over the Fe2O3 nanodisk for toluene oxidation. We conclude that the high oxygen adspecies concentration, good low-temperature reducibility, and strong interaction between Au nanoparticles and the Fe2O3 nanodisk are responsible for the high catalytic performance of the 6.55Au/Fe2O3 nanodisk.

AB - In the present study, nanodisk-like Fe2O3 was first prepared using the hydrothermal method, and then its supported gold catalysts (xAu/Fe2O3 nanodisk, x = 0.71-6.55 wt %) were fabricated using the polyvinyl alcohol-protected reduction method. Under the reaction conditions of toluene concentration = 1000 ppm, toluene/O2 molar ratio = 1/400, and space velocity = 20 000 mL/(g h), 6.55Au/Fe2O 3 nanodisk performed the best (T50% = 200 C and T 90% = 260 C). The apparent activation energies (46-50 kJ/mol) obtained over the xAu/Fe2O3 nanodisk were smaller than that (65 kJ/mol) obtained over the Fe2O3 nanodisk for toluene oxidation. We conclude that the high oxygen adspecies concentration, good low-temperature reducibility, and strong interaction between Au nanoparticles and the Fe2O3 nanodisk are responsible for the high catalytic performance of the 6.55Au/Fe2O3 nanodisk.

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Gold supported on iron oxide nanodisk as efficient catalyst for the removal of toluene

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