Periodic mesoporous organosilicas functionalized with iron(iii) complexes: preparation, characterization and catalysis on direct hydroxylation of benzene to phenol

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 98406-98412 ◽  
Author(s):  
Erxing Gu ◽  
Wei Zhong ◽  
Xiaoming Liu
Keyword(s):  
Periodic Mesoporous Organosilica ◽  
Periodic Mesoporous Organosilicas ◽  
Hydroxylation Of Benzene ◽  
Mesoporous Organosilica ◽  
Oxidation Of Phenol ◽  
Mesoporous Organosilicas ◽  
Direct Hydroxylation

Incorporation of iron(iii) complexes into hydrophobic periodic mesoporous organosilica prevents over-oxidation of phenol and hence significantly improves both the selectivity and yield of phenol compared with their corresponding homogeneous iron precursors.

scholarly journals Site-isolated manganese carbonyl on bipyridine-functionalities of periodic mesoporous organosilicas: efficient CO2 photoreduction and detection of key reaction intermediates

2017 ◽  
Vol 8 (12) ◽  
pp. 8204-8213 ◽  
Author(s):  
Xia Wang ◽  
Indre Thiel ◽  
Alexey Fedorov ◽  
Christophe Copéret ◽  
Victor Mougel ◽  
...  
Keyword(s):  
Reaction Intermediates ◽  
Periodic Mesoporous Organosilica ◽  
Co2 Photoreduction ◽  
Periodic Mesoporous Organosilicas ◽  
Highly Active ◽  
Mesoporous Organosilica ◽  
Manganese Catalysts ◽  
Mesoporous Organosilicas ◽  
Manganese Carbonyl

Robust heterogeneous bipyridine-based periodic mesoporous organosilica manganese catalysts are highly active for CO2 photoreduction.

Investigation on the function of nonionic surfactants during compressed CO2-mediated periodic mesoporous organosilica formation

Soft Matter ◽  
2017 ◽  
Vol 13 (34) ◽  
pp. 5704-5713 ◽  
Author(s):  
Cheng Wang ◽  
Mengnan Zhang ◽  
Wei Li ◽  
Xin Huang ◽  
Shuang Li ◽  
...  
Keyword(s):  
Systematic Study ◽  
Nonionic Surfactants ◽  
Periodic Mesoporous Organosilica ◽  
Periodic Mesoporous Organosilicas ◽  
Mesoporous Organosilica ◽  
Mesoporous Organosilicas

A systematic study on the formation of periodic mesoporous organosilicas by using different nonionic surfactants as templates with compressed CO2.

Preparation of periodic mesoporous organosilica with large mesopores using silica colloidal crystals as templates

Nanoscale ◽  
2020 ◽  
Vol 12 (41) ◽  
pp. 21155-21164
Author(s):  
Naho Muramoto ◽  
Tomoaki Sugiyama ◽  
Takamichi Matsuno ◽  
Hiroaki Wada ◽  
Kazuyuki Kuroda ◽  
...  
Keyword(s):  
Colloidal Crystals ◽  
Periodic Mesoporous Organosilica ◽  
Pore Sizes ◽  
Periodic Mesoporous Organosilicas ◽  
Mesoporous Organosilica ◽  
Large Mesopores ◽  
Mesoporous Organosilicas ◽  
Silica Colloidal Crystals

Periodic mesoporous organosilicas with precisely controlled pore sizes (>10 nm) were prepared using silica colloidal crystals as a template.

scholarly journals Heterogeneous hydrosilylation reaction catalysed by platinum complexes immobilized on bipyridine-periodic mesoporous organosilicas

2019 ◽  
Vol 48 (17) ◽  
pp. 5534-5540 ◽  
Author(s):  
Yuki Naganawa ◽  
Yoshifumi Maegawa ◽  
Haiqing Guo ◽  
Sandeep Suryabhan Gholap ◽  
Shinji Tanaka ◽  
...  
Keyword(s):  
Platinum Complex ◽  
Platinum Complexes ◽  
Product Yield ◽  
Periodic Mesoporous Organosilica ◽  
Hydrosilylation Reaction ◽  
Periodic Mesoporous Organosilicas ◽  
Mesoporous Organosilica ◽  
Mesoporous Organosilicas

A platinum complex immobilized on a bipyridine-periodic mesoporous organosilica (BPy-PMO) effectively catalysed the hydrosilylation reaction and showed good reusability without the loss of the product yield.

Control of plugging in bifunctional periodic mesoporous organosilica with imidazolium framework (BFPMO) via stepwise addition of silica precursors

2015 ◽  
Vol 3 (12) ◽  
pp. 6575-6585 ◽  
Author(s):  
Babak Karimi ◽  
Mojtaba Khorasani ◽  
Hojatollah Vali ◽  
Rafael Luque
Keyword(s):  
Periodic Mesoporous Organosilica ◽  
Periodic Mesoporous Organosilicas ◽  
Mesoporous Organosilica ◽  
Variable Content ◽  
Mesoporous Organosilicas ◽  
Bifunctional Periodic Mesoporous Organosilica

The synthesis of novel highly ordered plugged or normal bifunctional periodic mesoporous organosilicas (BFPMOs) with variable content of bridged IL-phenyl or -ethyl units has been described.

Turning periodic mesoporous organosilicas selective to CO2/CH4separation: deposition of aluminium oxide by atomic layer deposition

2015 ◽  
Vol 3 (45) ◽  
pp. 22860-22867 ◽  
Author(s):  
Mirtha A. O. Lourenço ◽  
Ricardo M. Silva ◽  
Rui F. Silva ◽  
Nicola Pinna ◽  
Stephane Pronier ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Aluminium Oxide ◽  
Atomic Layer ◽  
Functional Characteristics ◽  
Periodic Mesoporous Organosilica ◽  
Periodic Mesoporous Organosilicas ◽  
Mesoporous Organosilica ◽  
Layer Deposition ◽  
Mesoporous Organosilicas

Atomic layer deposition of aluminium oxide onto periodic mesoporous organosilica can be used to produce composites with enhanced functional characteristics.

Synthesis and bifunctional catalysis of metal nanoparticle-loaded periodic mesoporous organosilicas modified with amino groups

RSC Advances ◽  
2015 ◽  
Vol 5 (89) ◽  
pp. 72653-72658 ◽  
Author(s):  
Yu Horiuchi ◽  
Dang Do Van ◽  
Yusuke Yonezawa ◽  
Masakazu Saito ◽  
Satoru Dohshi ◽  
...  
Keyword(s):  
Present Article ◽  
Bifunctional Catalyst ◽  
Metal Nanoparticle ◽  
Bifunctional Catalysis ◽  
Amino Groups ◽  
Periodic Mesoporous Organosilica ◽  
Catalytic Activities ◽  
Periodic Mesoporous Organosilicas ◽  
Mesoporous Organosilica ◽  
Mesoporous Organosilicas

The present article describes the development of a periodic mesoporous organosilica (PMO)-based bifunctional catalyst that includes both oxidative and base catalytic activities.

Catalytic dehydration of fructose to HMF over sulfonic acid functionalized periodic mesoporous organosilicas: role of the acid density

2014 ◽  
Vol 4 (8) ◽  
pp. 2235-2240 ◽  
Author(s):  
Cláudia Bispo ◽  
Karine De Oliveira Vigier ◽  
Mariana Sardo ◽  
Nicolas Bion ◽  
Luís Mafra ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Crucial Role ◽  
Sulfonic Acid ◽  
Acid Sites ◽  
Periodic Mesoporous Organosilica ◽  
Periodic Mesoporous Organosilicas ◽  
Mesoporous Organosilica ◽  
Mesoporous Organosilicas

Here, we report that the dispersion and environment of acid sites anchored on a periodic mesoporous organosilica play a crucial role in its catalytic activity in water.

scholarly journals Near-IR squaraine dye–loaded gated periodic mesoporous organosilica for photo-oxidation of phenol in a continuous-flow device

2015 ◽  
Vol 1 (8) ◽  
pp. e1500390 ◽  
Author(s):  
Parijat Borah ◽  
Sivaramapanicker Sreejith ◽  
Palapuravan Anees ◽  
Nishanth Venugopal Menon ◽  
Yuejun Kang ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Heterogeneous Catalysts ◽  
Near Infrared ◽  
Periodic Mesoporous Organosilica ◽  
Photo Oxidation ◽  
Mesoporous Organosilica ◽  
Squaraine Dye ◽  
Flow Device ◽  
Catalytically Active ◽  
Oxidation Of Phenol

Periodic mesoporous organosilica (PMO) has been widely used for the fabrication of a variety of catalytically active materials. We report the preparation of novel photo-responsive PMO with azobenzene-gated pores. Upon activation, the azobenzene gate undergoes trans-cis isomerization, which allows an unsymmetrical near-infrared squaraine dye (Sq) to enter into the pores. The gate closure by cis-trans isomerization of the azobenzene unit leads to the safe loading of the monomeric dye inside the pores. The dye-loaded and azobenzene-gated PMO (Sq-azo@PMO) exhibits excellent generation of reactive oxygen species upon excitation at 664 nm, which can be effectively used for the oxidation of phenol into benzoquinone in aqueous solution. Furthermore, Sq-azo@PMO as the catalyst was placed inside a custom-built, continuous-flow device to carry out the photo-oxidation of phenol to benzoquinone in the presence of 664-nm light. By using the device, about 23% production of benzoquinone with 100% selectivity was achieved. The current research presents a prototype of transforming heterogeneous catalysts toward practical use.

scholarly journals Light-Emitting Lanthanide Periodic Mesoporous Organosilica (PMO) Hybrid Materials

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 566 ◽  
Author(s):  
Anna M. Kaczmarek ◽  
Pascal Van Der Voort
Keyword(s):  
Hybrid Materials ◽  
Mechanical Stability ◽  
Mesoporous Structure ◽  
Exciting Light ◽  
Periodic Mesoporous Organosilica ◽  
Light Emitting ◽  
Mesoporous Organosilica ◽  
Wide Range ◽  
Optical Applications ◽  
Mesoporous Organosilicas

Periodic mesoporous organosilicas (PMOs) have a well ordered mesoporous structure, a high thermal and mechanical stability and a uniform distribution of organic functionalities in the pore walls. The organic groups allow PMOs to be modified and functionalized by using a wide range of organic reactions. Since their first report in 1999, PMOs have found a vast range of applications, such as for catalysis, adsorbents, low-k films, biomedical supports and also for optical applications. Optical applications are very interesting as PMOs offer the possibility of designing advanced luminescent hybrid materials comprising of organic components, yet with much higher stability and very good processability. Despite their promising possibilities, the optical properties of pristine PMOs and PMOs grafted with d-metal or f-metal ions and complexes have been explored less frequently. In this review, we aimed to overview the exciting light emitting properties of various reported lanthanide PMO hybrid materials and interest the reader in this promising application for lanthanide PMO materials.

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