Gold nanoparticles supported on periodic mesoporous organosilicas for epoxidation of olefins: Effects of pore architecture and surface modification method of the supports

Yu, Na; Ding, Yan; Lo, An-Ya; Huang, Shing‐Jong; Wu, Peng; Liu, Cheng; Fu, Zaihui; Yin, Daqiang; Hung, Chin‐Te; Lei, Zhibin; Liu, Shang-Bin

doi:10.1016/j.micromeso.2011.03.030

Cited by 28 publications

(6 citation statements)

References 68 publications

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“…On a mesoporous silica matrix, surface-modified catalytic systems have some disadvantages, such as low stability, non-uniform catalytic site distribution and catalytic site leaching. To overcome these problems, PMOs offer a powerful route for catalytic modification with the support of metal nanoparticles, such as Pd, [30][31][32] Au, [33][34][35][36] Ti, 24 Ru, 37 Cu 38 and Cr, 39 etc. Table 1 summarizes the recent studies of PMOs for catalytic applications.…”

Section: Pmos For Advanced Applications Ss Park Et Almentioning

confidence: 99%

Periodic mesoporous organosilicas for advanced applications

2014

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In 1999, three groups independently developed a novel class of organic-inorganic nanocomposites known as periodic mesoporous organosilicas (PMOs). The organic functional groups in the frameworks of these solids allow tuning of the surface properties and modification of the bulk properties of the material. This paper provides a comprehensive overview of PMOs and discusses their different functionalities, morphology and applications, such as catalysis, drug delivery, sensing, optics, electronic devices, environmental applications (gas sensing and gas adsorption), biomolecule adsorption and chromatography for which PMOs have been used over the past 5 years.

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Section: Pmos For Advanced Applications Ss Park Et Almentioning

confidence: 99%

Periodic mesoporous organosilicas for advanced applications

2014

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“…One of the strategies to overcome the challenge of gold aggregation is to anchor gold on support materials (available at stacks.iop.org/Nano/23/294010/mmedia) [14][15][16]. Ordered mesoporous structures (such as MCM-41 and SBA-15) with regular channel structures and high surface areas seem to be ideal for forming a scaffold in which metal nanoparticles can be supported on three-dimensional channels and hence their agglomeration can be prevented [10].…”

Section: Introductionmentioning

confidence: 99%

Nanoscale gold intercalated into mesoporous silica as a highly active and robust catalyst

Wang¹,

Chen²,

Shang³

et al. 2012

Nanotechnology

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Stable gold/mesoporous silica nanocomposites (with Au nanoparticles intercalated in the walls of mesoporous silica) were successfully synthesized by the hydrothermal method and applied as catalysts. A challenging issue associated with intercalation and the use of coordinating agents is the effect of the coordinating agent on the mesoporous silica structure and periodicity. This investigation is targeted at elaborating the effect of the coordinating agent on the resulting mesoporous structure. The amount of Au coordinating agent bis[3-(triethoxysilyl)propyl]-tetrasulfide (TESPTS) was systematically altered to synthesize a range of materials with varying Au loadings and morphologies. These materials were characterized by N(2) adsorption-desorption, x-ray diffraction, transmission electron microscopy and UV-visible spectroscopy. The structures of the catalysts were found to range from mesoporous to vesical- and foam-like upon varying the TESPTS/polymer template (P123) ratio. Additionally, the sizes of Au nanoparticles increased by increasing the amount of TESPTS. The catalytic properties of the resulting materials were examined using oxidation of benzyl alcohol and reduction of 4-nitrophenol as probe reactions. The intercalated systems demonstrated high activity and more importantly were robust and readily reusable. This approach to imparting stability to nanoscale materials may be much more broadly applicable and expand the types of environments in which they can be utilized.

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“…Gold catalysts. In 2011, an interesting comprehensive study was reported on the influence of pore architecture and surface modification on the dispersion and the size of gold nanoparticles, as well as their catalytic performances in the epoxidation of α-pinene 1 with H 2 O 2 (Table 4) [30]. A porous support with a higher pore connectivity, such as MSU with 3D-worm like pore structure, was compared to periodic mesoporous organosilica materials (PMO) with 1D-architecture.…”

Section: Noble and Semi-noble Metalsmentioning

confidence: 99%

“…Table 4. Oxidation of α-pinene 1 catalyzed by gold nanoparticles supported on periodic mesoporous organosilicas a (adapted from reference [30]). Rhenium catalyst.…”

Section: Noble and Semi-noble Metalsmentioning

confidence: 99%

Catalytic Oxidation Processes for the Upgrading of Terpenes: State-of-the-Art and Future Trends

et al. 2019

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Terpenic olefins constitute a relevant platform of renewable molecules, which could be used as key intermediates for the perfumery, flavoring, and pharmaceutical industries. The upgrading of these cheap and available agro-resources through catalytic oxidation processes remains of great interest, leading to the formation of either epoxides via the oxidation of the olefinic bond or α,β-unsaturated ketones by the Csp3-H functionalization at the α-position of the double bond. This critical review summarizes some of the most relevant homogeneous or heterogeneous catalysts designed for the oxidation of some abundant terpenic olefins in the last decade (2008–2018).

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Gold nanoparticles supported on periodic mesoporous organosilicas for epoxidation of olefins: Effects of pore architecture and surface modification method of the supports

Cited by 28 publications

References 68 publications

Periodic mesoporous organosilicas for advanced applications

Periodic mesoporous organosilicas for advanced applications

Nanoscale gold intercalated into mesoporous silica as a highly active and robust catalyst

Catalytic Oxidation Processes for the Upgrading of Terpenes: State-of-the-Art and Future Trends

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