Gold nanoparticles supported on hydroxylapatite as high performance catalysts for low temperature CO oxidation

Jun Huang; Lu Cun Wang; Yong Mei Liu; Yong Cao; He Yong He; Kang Nian Fan

doi:10.1016/j.apcatb.2010.10.029

Gold nanoparticles supported on hydroxylapatite as high performance catalysts for low temperature CO oxidation

Jun Huang
, Lu Cun Wang
, Yong Mei Liu
, Yong Cao
, He Yong He
, Kang Nian Fan

Energy & Environmental Science & Technology

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

65 Scopus citations

Abstract

A series of gold supported on hydroxylapatite (HAP) catalysts were prepared by deposition-precipitation with urea to study the influence of calcination atmosphere, i.e., H₂, He and O₂, on the performance of the catalyst in low-temperature CO oxidation. Calcination atmosphere was found to have an important influence on the catalytic activity and stability of Au/HAP. The highest initial activity was obtained for Au/HAP-He obtained by inert He-calcination, which, however, suffered the most severe deactivation with time on stream. Calcination in oxidative O₂ environment resulted in the best stability and highest steady-state activity among the three catalysts. TEM results revealed that inert He-calcination can produce the smallest Au nanoparticles over the HAP support, which was suggested to be responsible for the highest initial activity of Au/HAP-He. Based on the CO₂-TPD and in situ DRIFTS studies, the superior stability of Au/HAP-O₂ can be attributed to a limited surface basicity in this material.

Original language	English
Pages (from-to)	560-569
Number of pages	10
Journal	Applied Catalysis B: Environmental
Volume	101
Issue number	3-4
DOIs	https://doi.org/10.1016/j.apcatb.2010.10.029
State	Published - Jan 14 2011

Keywords

CO oxidation
Calcination atmosphere
Catalyst stability
Hydroxyapatite
Supported gold catalysts

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10.1016/j.apcatb.2010.10.029

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title = "Gold nanoparticles supported on hydroxylapatite as high performance catalysts for low temperature CO oxidation",

abstract = "A series of gold supported on hydroxylapatite (HAP) catalysts were prepared by deposition-precipitation with urea to study the influence of calcination atmosphere, i.e., H2, He and O2, on the performance of the catalyst in low-temperature CO oxidation. Calcination atmosphere was found to have an important influence on the catalytic activity and stability of Au/HAP. The highest initial activity was obtained for Au/HAP-He obtained by inert He-calcination, which, however, suffered the most severe deactivation with time on stream. Calcination in oxidative O2 environment resulted in the best stability and highest steady-state activity among the three catalysts. TEM results revealed that inert He-calcination can produce the smallest Au nanoparticles over the HAP support, which was suggested to be responsible for the highest initial activity of Au/HAP-He. Based on the CO2-TPD and in situ DRIFTS studies, the superior stability of Au/HAP-O2 can be attributed to a limited surface basicity in this material.",

keywords = "CO oxidation, Calcination atmosphere, Catalyst stability, Hydroxyapatite, Supported gold catalysts",

author = "Jun Huang and Wang, \{Lu Cun\} and Liu, \{Yong Mei\} and Yong Cao and He, \{He Yong\} and Fan, \{Kang Nian\}",

note = "Funding Information: This work was financially supported by the National Natural Science Foundation of China ( 20633030 , 20721063 , 20873026 , 21073042 ), the National Basic Research Program of China ( 2009CB623506 ), New Century Excellent Talents in the University of China ( NCET-09-0305 ) and S cience \& Technology Commission of Shanghai Municipality ( 08DZ2270500 ).",

year = "2011",

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doi = "10.1016/j.apcatb.2010.10.029",

language = "English",

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journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

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T1 - Gold nanoparticles supported on hydroxylapatite as high performance catalysts for low temperature CO oxidation

AU - Huang, Jun

AU - Wang, Lu Cun

AU - Liu, Yong Mei

AU - Cao, Yong

AU - He, He Yong

AU - Fan, Kang Nian

N1 - Funding Information: This work was financially supported by the National Natural Science Foundation of China ( 20633030 , 20721063 , 20873026 , 21073042 ), the National Basic Research Program of China ( 2009CB623506 ), New Century Excellent Talents in the University of China ( NCET-09-0305 ) and S cience & Technology Commission of Shanghai Municipality ( 08DZ2270500 ).

PY - 2011/1/14

Y1 - 2011/1/14

N2 - A series of gold supported on hydroxylapatite (HAP) catalysts were prepared by deposition-precipitation with urea to study the influence of calcination atmosphere, i.e., H2, He and O2, on the performance of the catalyst in low-temperature CO oxidation. Calcination atmosphere was found to have an important influence on the catalytic activity and stability of Au/HAP. The highest initial activity was obtained for Au/HAP-He obtained by inert He-calcination, which, however, suffered the most severe deactivation with time on stream. Calcination in oxidative O2 environment resulted in the best stability and highest steady-state activity among the three catalysts. TEM results revealed that inert He-calcination can produce the smallest Au nanoparticles over the HAP support, which was suggested to be responsible for the highest initial activity of Au/HAP-He. Based on the CO2-TPD and in situ DRIFTS studies, the superior stability of Au/HAP-O2 can be attributed to a limited surface basicity in this material.

AB - A series of gold supported on hydroxylapatite (HAP) catalysts were prepared by deposition-precipitation with urea to study the influence of calcination atmosphere, i.e., H2, He and O2, on the performance of the catalyst in low-temperature CO oxidation. Calcination atmosphere was found to have an important influence on the catalytic activity and stability of Au/HAP. The highest initial activity was obtained for Au/HAP-He obtained by inert He-calcination, which, however, suffered the most severe deactivation with time on stream. Calcination in oxidative O2 environment resulted in the best stability and highest steady-state activity among the three catalysts. TEM results revealed that inert He-calcination can produce the smallest Au nanoparticles over the HAP support, which was suggested to be responsible for the highest initial activity of Au/HAP-He. Based on the CO2-TPD and in situ DRIFTS studies, the superior stability of Au/HAP-O2 can be attributed to a limited surface basicity in this material.

KW - CO oxidation

KW - Calcination atmosphere

KW - Catalyst stability

KW - Hydroxyapatite

KW - Supported gold catalysts

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DO - 10.1016/j.apcatb.2010.10.029

M3 - Article

AN - SCOPUS:78650311300

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VL - 101

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EP - 569

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

IS - 3-4

ER -

Gold nanoparticles supported on hydroxylapatite as high performance catalysts for low temperature CO oxidation

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Keywords

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