نتایج جستجو برای: sba 15 عاملدار شده

تعداد نتایج: 935689  

Journal: :Journal of the American Chemical Society 2004
Trong-On Do Andrei Nossov Marie-Anne Springuel-Huet Celine Schneider Jeremy L Bretherton Colin A Fyfe Serge Kaliaguine

Ultrahigh-field 27Al MAS and MQMAS NMR and 129Xe NMR were used to characterize the zeolite-coated SBA-15 materials. This study shows evidence that zeolite nanoclusters are coated on the mesopore surface of SBA-15. These techniques are useful for the detection of zeolite nanoclusters and different aluminum environments in zeolite/aluminosilicate composites, which are difficult or even impossible...

2012
Hyung Bum An Mi Jin Yu Ji Man Kim Mingshi Jin Jong-Ki Jeon Sung Hoon Park Seung-Soo Kim Young-Kwon Park

The removal of formaldehyde at low concentrations is important in indoor air pollution research. In this study, mesoporous carbon with a large specific surface area was used for the adsorption of low-concentration indoor formaldehyde. A mesoporous carbon material, CMK-3, was synthesized using the nano-replication method. SBA-15 was used as a mesoporous template. The surface of CMK-3 was activat...

2015
Dawid Lewandowski Piotr Ruszkowski Anita Pińska Grzegorz Schroeder Joanna Kurczewska Heidar-Ali Tajmir-Riahi

Gallic acid has been covalently conjugated to SBA-15 mesoporous silica surface through different linkers. Cytotoxic activity of the hybrid organic-inorganic systems against HeLa and KB cell lines has been analyzed. Up to 67% of HeLa or KB tumor cells growth inhibition has been achieved at low silica concentration used (10 μg mL(-1)).

Journal: :Chemical communications 2012
Bharmana Malvi Sayam Sen Gupta

Trypsin has been encapsulated in the mesopores of a hierarchical mesoporous silica material synthesized via Cu(I) catalyzed azide-alkyne click reaction between azide functionalized large spherical SBA-15 particles and alkyne functionalized mesoporous silica nanoparticles (MSNs). Encapsulated trypsin functions as an efficient biocatalyst and can be recycled several times.

Journal: :Chemical communications 2004
Catherine J Miller Dermot O'Hare

A new bis(indenyl)zirconocene bearing a pendant Si-Cl anchor has been grafted onto MCM-41, SBA-15, MCM-48 and a disordered mesoporous silica for the polymerisation of ethylene and propylene, producing polymers with very high molecular weights, low polydispersities and, in the case of polypropylene, higher levels of isotacticity than obtainable with analogous homogeneous systems.

Journal: :Chemical communications 2004
Yanqin Wang Bodo Zibrowius Chia-Min Yang Bernd Spliethoff Ferdi Schüth

Ordered mesoporous silicas SBA-15 with high loadings of pendant vinyl groups have been synthesized via co-condensation of tetraethoxysilane (TEOS) and triethoxyvinylsilane (TEVS) templated with a triblock copolymer.

Journal: :Chemical communications 2009
Fabio Carniato Lorenzo Tei Walter Dastrù Leonardo Marchese Mauro Botta

Two hybrid materials based on mesoporous silicas SBA-15 and MCM-41 functionalized with stable and electrically neutral Gd(iii) macrocyclic complexes were prepared, and their (1)H NMR relaxometric properties investigated as a function of temperature and magnetic field strength.

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2014
Yong-Fei Li Yuan-Feng Wei Ying Tan Xue-Fei Kong Kai Zhou Zhi-Min Wu Yue-Jin Liu

An inorganic-organic silica material (SBA-15-1), prepared by immobilization of the naphthalimide derivative within the channels of the mesoporous silica material SBA-15, is characterized by several spectroscopic methods. SBA-15-1 can be used as a chemical sensor for detecting and removing Hg(2+) in a heterogeneous system. The fluorescence enhancement of SBA-15-1 was attributed to the formation ...

Journal: :Cosmetics 2023

Titanium dioxide (TiO2) is a safe inorganic ultraviolet (UV) filter with activity against UV damage. However, the recombination of carrier’s charge and tendency for TiO2 aggregation are main disadvantages. Substrate supports, such as mesoporous silica, biocompatible strategies to incorporate TiO2, altering its interaction skin. Since lips sensitive adversities environment, including radiation, ...

2013
Jun Tao Leiqiang Zhao Changqing Dong Qiang Lu

Nickel supported on SBA-15 doped with CeO2 catalysts (Ni-CeO2/SBA-15) was prepared, and used for steam reforming of toluene which was selected as a model compound of biomass gasification tar. A fixed-bed lab-scale set was designed and employed to evaluate the catalytic performances of the Ni-CeO2/SBA-15 catalysts. Experiments were performed to reveal the effects of several factors on the toluen...

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