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.

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.

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.

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 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 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.

scholarly journals Thiol-Functionalized Ethylene Periodic Mesoporous Organosilica as an Efficient Scavenger for Palladium: Confirming the Homogeneous Character of the Suzuki Reaction

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 623 ◽  
Author(s):  
María I. López ◽  
Dolores Esquivel ◽  
César Jiménez-Sanchidrián ◽  
Pascal Van Der Voort ◽  
Francisco J. Romero-Salguero
Keyword(s):  
Phenylboronic Acid ◽  
Suzuki Reaction ◽  
Coupling Reaction ◽  
Deep Insight ◽  
Periodic Mesoporous Organosilica ◽  
Mesoporous Organosilica ◽  
Cross Coupling Reaction ◽  
Mesoporous Organosilicas ◽  
Insight Into ◽  
Catch Mechanism

This work describes the synthesis of thiol-functionalized periodic mesoporous organosilicas (PMOs) prepared using the precursor 1-thiol-1,2-bis(triethoxysilyl)ethane, alone or mixed with 1,2-bis(triethoxysilyl)ethane. The thiol groups incorporated into the structure were found to be efficient for palladium binding. This has allowed these materials to be used as catalysts in the Suzuki cross-coupling reaction of bromobenzene and phenylboronic acid. Their performance has been compared to palladium-supported periodic mesoporous (organo)silicas and important differences have been observed between them. The use of different heterogeneity tests, such as hot filtration test and poisoning experiments, has provided a deep insight into the reaction mechanism and has confirmed that the reaction occurs in the homogeneous phase following a “release and catch” mechanism. Furthermore, the thiol-functionalized periodic mesoporous organosilica, synthesized using only 1-thiol-1,2-bis(triethoxysilyl)ethane as a precursor, has proven to be an efficient palladium scavenger.

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