Gold nanoparticles confined in ordered mesopores: Size effect and enhanced stability during gas-phase selective oxidation of cyclohexanol

Renhong Li; Xiaoqing Yan; Xiaohui Zhu; Donghai Shou; Xin Zhou; Yihu Dai; Yanhui Yang

doi:10.1016/j.cattod.2016.12.045

Gold nanoparticles confined in ordered mesopores: Size effect and enhanced stability during gas-phase selective oxidation of cyclohexanol

Renhong Li, Xiaoqing Yan, Xiaohui Zhu, Donghai Shou, Xin Zhou, Yihu Dai, Yanhui Yang

School of Chemistry and Moleculai Engineering

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

11 Scopus citations

Abstract

Gold nanoparticles (AuNPs) encapsulated in the extra-large spherical cages of ordered mesoporous silica EP-FDU-12 with controlled and narrow size distributions have been investigated for the gas-phase oxidation of cyclohexanol. The size effect of AuNPs was demonstrated that the highest TOF for oxidation of cyclohexanol was 939 h⁻¹ at 230 °C when the resulting particle size was in the range of 5–6 nm. The smaller or larger AuNPs ranging from 3.3 to 14.2 nm led to poor catalytic performances in the cyclohexanol oxidation. Importantly, AuNPs loaded in EP-FDU-12 catalyst exhibited remarkably long lifetime (>550 h) without obvious mass-specific activity decrease and poisonous coke formation, which will light the path for the large-scale industrialization of fine chemicals over noble metal catalysts.

Original language	English
Pages (from-to)	269-275
Number of pages	7
Journal	Catalysis Today
Volume	298
DOIs	https://doi.org/10.1016/j.cattod.2016.12.045
State	Published - 1 Dec 2017

Keywords

Cyclohexanol
Gold catalysis
Selective oxidation
Size effect
Stability

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10.1016/j.cattod.2016.12.045

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title = "Gold nanoparticles confined in ordered mesopores: Size effect and enhanced stability during gas-phase selective oxidation of cyclohexanol",

abstract = "Gold nanoparticles (AuNPs) encapsulated in the extra-large spherical cages of ordered mesoporous silica EP-FDU-12 with controlled and narrow size distributions have been investigated for the gas-phase oxidation of cyclohexanol. The size effect of AuNPs was demonstrated that the highest TOF for oxidation of cyclohexanol was 939 h−1 at 230 °C when the resulting particle size was in the range of 5–6 nm. The smaller or larger AuNPs ranging from 3.3 to 14.2 nm led to poor catalytic performances in the cyclohexanol oxidation. Importantly, AuNPs loaded in EP-FDU-12 catalyst exhibited remarkably long lifetime (>550 h) without obvious mass-specific activity decrease and poisonous coke formation, which will light the path for the large-scale industrialization of fine chemicals over noble metal catalysts.",

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T2 - Size effect and enhanced stability during gas-phase selective oxidation of cyclohexanol

AU - Li, Renhong

AU - Yan, Xiaoqing

AU - Zhu, Xiaohui

AU - Shou, Donghai

AU - Zhou, Xin

AU - Dai, Yihu

AU - Yang, Yanhui

PY - 2017/12/1

Y1 - 2017/12/1

N2 - Gold nanoparticles (AuNPs) encapsulated in the extra-large spherical cages of ordered mesoporous silica EP-FDU-12 with controlled and narrow size distributions have been investigated for the gas-phase oxidation of cyclohexanol. The size effect of AuNPs was demonstrated that the highest TOF for oxidation of cyclohexanol was 939 h−1 at 230 °C when the resulting particle size was in the range of 5–6 nm. The smaller or larger AuNPs ranging from 3.3 to 14.2 nm led to poor catalytic performances in the cyclohexanol oxidation. Importantly, AuNPs loaded in EP-FDU-12 catalyst exhibited remarkably long lifetime (>550 h) without obvious mass-specific activity decrease and poisonous coke formation, which will light the path for the large-scale industrialization of fine chemicals over noble metal catalysts.

AB - Gold nanoparticles (AuNPs) encapsulated in the extra-large spherical cages of ordered mesoporous silica EP-FDU-12 with controlled and narrow size distributions have been investigated for the gas-phase oxidation of cyclohexanol. The size effect of AuNPs was demonstrated that the highest TOF for oxidation of cyclohexanol was 939 h−1 at 230 °C when the resulting particle size was in the range of 5–6 nm. The smaller or larger AuNPs ranging from 3.3 to 14.2 nm led to poor catalytic performances in the cyclohexanol oxidation. Importantly, AuNPs loaded in EP-FDU-12 catalyst exhibited remarkably long lifetime (>550 h) without obvious mass-specific activity decrease and poisonous coke formation, which will light the path for the large-scale industrialization of fine chemicals over noble metal catalysts.

KW - Cyclohexanol

KW - Gold catalysis

KW - Selective oxidation

KW - Size effect

KW - Stability

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EP - 275

JO - Catalysis Today

JF - Catalysis Today

ER -

Gold nanoparticles confined in ordered mesopores: Size effect and enhanced stability during gas-phase selective oxidation of cyclohexanol

Abstract

Keywords

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