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On the Stabilization of Gold Nanoparticles over Silica-Based Magnetic Supports Modified with Organosilanes
(WILEY-BLACKWELL, 2011)
The immobilization of gold nanoparticles (Au NPs) on silica is made possible by the functionalization of the silica surfaces with organosilanes. Au NPs could only be stabilized and firmly attached to silica-support surfaces ...
Organosilane-Assisted Synthesis of Hierarchical MCM-22 Zeolites for Condensation of Glycerol into Bulky Products
(2019-01-02)
Hierarchical micro-mesoporous MCM-22 zeolites were synthesized using hexamethyleneimine and organosilanes as structure directing agents, which enabled the formation of hierarchical zeolites with mesopores created by the ...
Síntese e avaliação catalítica das zeólitas com estrutura BEA, MFI e MTW na reação de Knoevenagel
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQ, 2014-08-22)
The use of zeolites in basic catalysis is small, especially when compared to the numerous applications of material in their acid form. Inside this context, are even smaller the number of studies on the use of as-synthesized ...
Some features associated with organosilane groups grafted by the sol-gel process onto synthetic talc-like phyllosilicate
(Academic Press Inc Elsevier ScienceSan DiegoEUA, 2006)
Preparation of hydrophobic MFI zeolites containing hierarchical micro-mesopores using seeds functionalized with octyltriethoxysilane
(2020-01-20)
In this work, we report the synthesis of hydrophobic MFI zeolites presenting a mesopore size distribution and high specific external area (∼288 m2 g−1), employing surface functionalization with octyltriethoxysilane (OTEOS). ...
Catalyst Recovery and Recycling Facilitated by Magnetic Separation: Iridium and Other Metal Nanoparticles
(WILEY-V C H VERLAG GMBHWEINHEIM, 2012)
The immobilization of metal nanoparticles in magnetic responsive solids allows the easy, fast, and clean separation of catalysts; however, the efficiency of this separation process depends on a strong metalsupport interaction. ...
Influence of cerium (IV) ions on the mechanism of organosilane polymerization and on the improvement of its barrier properties
(Pergamon-Elsevier B.V. Ltd, 2009-03-30)
In this work, the effect of cerium (IV) ammonium nitrate (CAN) addition on the polymerization of bis-[triethoxysilyl]ethane (BTSE) film applied on carbon steel was studied. The electrochemical characterization of the films ...
Estudos sobre a acessibilidade aos sítios de zeólitas para aplicação em catálise básica
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQCâmpus São Carlos, 2022-03-28)
The application of zeolites in catalysis is restricted when bulkier molecules are involved, for example, in the manufacture of fine chemicals, where the reactant molecules are unable to access their micropores. A solution ...
Catalyst Recovery and Recycling Facilitated by Magnetic Separation: Iridium and Other Metal Nanoparticles
(Wiley-BlackwellWeinheim, 2012)