Superior catalytic properties in aerobic oxidation of olefins over Au nanoparticles on pyrrolidone-modified SBA-15

Liang Wang; Hong Wang; Prokop Hapala; Longfeng Zhu; Limin Ren; Xiangju Meng; James P. Lewis; Feng Shou Xiao

doi:10.1016/j.jcat.2011.03.029

Superior catalytic properties in aerobic oxidation of olefins over Au nanoparticles on pyrrolidone-modified SBA-15

Liang Wang, Hong Wang, Prokop Hapala, Longfeng Zhu, Limin Ren, Xiangju Meng, James P. Lewis, Feng Shou Xiao

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

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Abstract

We report on our systematic investigation of Au nanoparticles highly dispersed in the mesopores of (s)-(-)-2-pyrrolidinone-5-carboxylic acid (Py)-modified SBA-15 (Au/SBA-15-Py) by using a series of modern techniques. ¹³C NMR and IR spectroscopies indicate that Py species are successfully grafted on the surface of mesopores in SBA-15; XRD patterns and N₂ adsorption isotherms show that the sample mesostructures are well preserved; TEM images clearly confirm the uniform Au nanoparticles in the mesopores; and XPS suggests an interaction between Au nanoparticles with Py species. Interestingly, Au/SBA-15-Py catalysts always exhibit superior catalytic properties in the oxidation of cyclohexene and styrene by molecular oxygen at atmospheric pressure, compared with the pyrrolidone-free SBA-15 supported Au catalyst (Au/SBA-15-N). This phenomenon is reasonably related to the interaction between Au nanoparticles with Py species, which is consistent with results analyzed from our density-functional theory (DFT) calculations.

Original language	English (US)
Pages (from-to)	30-39
Number of pages	10
Journal	Journal of Catalysis
Volume	281
Issue number	1
DOIs	https://doi.org/10.1016/j.jcat.2011.03.029
State	Published - Jul 1 2011
Externally published	Yes

Bibliographical note

Funding Information:
This work is supported by the National Natural Science Foundation of China (20973079) and the State Basic Research Project of China (2009CB623501). Dr. H. Wang was supported in part by the (USA) National Science Foundation (DMR-0903225) and by the Advanced Energy Initiative of West Virginia University. P. Hapala was supported by the Czech Republic Grant No. SVV-2010-263303.

Keywords

Au nanoparticles
Cyclohexene and styrene oxidation by molecular oxygen
Pyrrolidone

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title = "Superior catalytic properties in aerobic oxidation of olefins over Au nanoparticles on pyrrolidone-modified SBA-15",

abstract = "We report on our systematic investigation of Au nanoparticles highly dispersed in the mesopores of (s)-(-)-2-pyrrolidinone-5-carboxylic acid (Py)-modified SBA-15 (Au/SBA-15-Py) by using a series of modern techniques. 13C NMR and IR spectroscopies indicate that Py species are successfully grafted on the surface of mesopores in SBA-15; XRD patterns and N2 adsorption isotherms show that the sample mesostructures are well preserved; TEM images clearly confirm the uniform Au nanoparticles in the mesopores; and XPS suggests an interaction between Au nanoparticles with Py species. Interestingly, Au/SBA-15-Py catalysts always exhibit superior catalytic properties in the oxidation of cyclohexene and styrene by molecular oxygen at atmospheric pressure, compared with the pyrrolidone-free SBA-15 supported Au catalyst (Au/SBA-15-N). This phenomenon is reasonably related to the interaction between Au nanoparticles with Py species, which is consistent with results analyzed from our density-functional theory (DFT) calculations.",

keywords = "Au nanoparticles, Cyclohexene and styrene oxidation by molecular oxygen, Pyrrolidone",

author = "Liang Wang and Hong Wang and Prokop Hapala and Longfeng Zhu and Limin Ren and Xiangju Meng and Lewis, {James P.} and Xiao, {Feng Shou}",

note = "Funding Information: This work is supported by the National Natural Science Foundation of China (20973079) and the State Basic Research Project of China (2009CB623501). Dr. H. Wang was supported in part by the (USA) National Science Foundation (DMR-0903225) and by the Advanced Energy Initiative of West Virginia University. P. Hapala was supported by the Czech Republic Grant No. SVV-2010-263303.",

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AU - Wang, Liang

AU - Wang, Hong

AU - Hapala, Prokop

AU - Zhu, Longfeng

AU - Ren, Limin

AU - Meng, Xiangju

AU - Lewis, James P.

AU - Xiao, Feng Shou

N1 - Funding Information: This work is supported by the National Natural Science Foundation of China (20973079) and the State Basic Research Project of China (2009CB623501). Dr. H. Wang was supported in part by the (USA) National Science Foundation (DMR-0903225) and by the Advanced Energy Initiative of West Virginia University. P. Hapala was supported by the Czech Republic Grant No. SVV-2010-263303.

PY - 2011/7/1

Y1 - 2011/7/1

N2 - We report on our systematic investigation of Au nanoparticles highly dispersed in the mesopores of (s)-(-)-2-pyrrolidinone-5-carboxylic acid (Py)-modified SBA-15 (Au/SBA-15-Py) by using a series of modern techniques. 13C NMR and IR spectroscopies indicate that Py species are successfully grafted on the surface of mesopores in SBA-15; XRD patterns and N2 adsorption isotherms show that the sample mesostructures are well preserved; TEM images clearly confirm the uniform Au nanoparticles in the mesopores; and XPS suggests an interaction between Au nanoparticles with Py species. Interestingly, Au/SBA-15-Py catalysts always exhibit superior catalytic properties in the oxidation of cyclohexene and styrene by molecular oxygen at atmospheric pressure, compared with the pyrrolidone-free SBA-15 supported Au catalyst (Au/SBA-15-N). This phenomenon is reasonably related to the interaction between Au nanoparticles with Py species, which is consistent with results analyzed from our density-functional theory (DFT) calculations.

AB - We report on our systematic investigation of Au nanoparticles highly dispersed in the mesopores of (s)-(-)-2-pyrrolidinone-5-carboxylic acid (Py)-modified SBA-15 (Au/SBA-15-Py) by using a series of modern techniques. 13C NMR and IR spectroscopies indicate that Py species are successfully grafted on the surface of mesopores in SBA-15; XRD patterns and N2 adsorption isotherms show that the sample mesostructures are well preserved; TEM images clearly confirm the uniform Au nanoparticles in the mesopores; and XPS suggests an interaction between Au nanoparticles with Py species. Interestingly, Au/SBA-15-Py catalysts always exhibit superior catalytic properties in the oxidation of cyclohexene and styrene by molecular oxygen at atmospheric pressure, compared with the pyrrolidone-free SBA-15 supported Au catalyst (Au/SBA-15-N). This phenomenon is reasonably related to the interaction between Au nanoparticles with Py species, which is consistent with results analyzed from our density-functional theory (DFT) calculations.

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Superior catalytic properties in aerobic oxidation of olefins over Au nanoparticles on pyrrolidone-modified SBA-15

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