Asymmetric benzoylation of hydrobenzoin by copper(ii) bis(oxazoline) anchored onto ordered mesoporous silicas and their carbon replicas

2013 ◽  
Vol 3 (9) ◽  
pp. 2415 ◽  
Author(s):  
Ana Rosa Silva ◽  
Liliana Carneiro ◽  
Ana P. Carvalho ◽  
João Pires
Keyword(s):  
Mesoporous Silicas ◽  
Ordered Mesoporous ◽  
Carbon Replicas

Effect of addition of pore expanding agent on changes of structure characteristics of ordered mesoporous silicas

2008 ◽  
Vol 255 (5) ◽  
pp. 2851-2858 ◽  
Author(s):  
A. Derylo-Marczewska ◽  
A.W. Marczewski ◽  
I. Skrzypek ◽  
S. Pikus ◽  
M. Kozak
Keyword(s):  
Mesoporous Silicas ◽  
Structure Characteristics ◽  
Ordered Mesoporous

The effect of aging temperature on structure characteristics of ordered mesoporous silicas

2005 ◽  
Vol 252 (3) ◽  
pp. 625-632 ◽  
Author(s):  
A. Deryło-Marczewska ◽  
A.W. Marczewski ◽  
I. Skrzypek ◽  
S. Pikus ◽  
M. Kozak
Keyword(s):  
Aging Temperature ◽  
Mesoporous Silicas ◽  
Structure Characteristics ◽  
Ordered Mesoporous

Solvent-tuning of ordered mesoporous silicas prepared through evaporation-induced self-assembly templated by poly(ethylene oxide-b-ε-caprolactone)

RSC Advances ◽  
2014 ◽  
Vol 4 (105) ◽  
pp. 61012-61021 ◽  
Author(s):  
Wei-Cheng Chu ◽  
Chen-Xin Lin ◽  
Shiao-Wei Kuo
Keyword(s):  
Ethylene Oxide ◽  
Self Assembly ◽  
Mesoporous Silicas ◽  
Size Distributions ◽  
Ordered Mesoporous ◽  
Pore Size Distributions ◽  
Evaporation Induced Self Assembly ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Selection Of

Highly ordered mesoporous silicas having narrow pore size distributions and various morphologies merely through selection of an appropriate solvent.

scholarly journals Laccase Immobilisation on Mesostructured Silicas

2012 ◽  
Vol 33 (4) ◽  
pp. 611-620 ◽  
Author(s):  
Jolanta Bryjak ◽  
Katarzyna Szymańska ◽  
Andrzej B. Jarzębski
Keyword(s):  
Thermal Inactivation ◽  
Mesoporous Silicas ◽  
Native Enzyme ◽  
Covalent Attachment ◽  
Initial Activity ◽  
Ordered Mesoporous ◽  
Extracellular Laccase ◽  
Activity Loss ◽  
Activity Decay ◽  
Hexagonally Ordered

Extracellular laccase produced by the wood-rotting fungus Cerrena unicolor was immobilised covalently on the mesostructured siliceous foam (MCF) and three hexagonally ordered mesoporous silicas (SBA-15) with different pore sizes. The enzyme was attached covalently via glutaraldehyde (GLA) or by simple adsorption and additionally crosslinked with GLA. The experiments indicated that laccase bound by covalent attachment remains very active and stable. The best biocatalysts were MCF and SBA-15 with Si-F moieties on their surface. Thermal inactivation of immobilised and native laccase at 80°C showed a biphasic-type activity decay, that could be modelled with 3- parameter isoenzyme model. It appeared that immobilisation did not significantly change the mechanism of activity loss but stabilised a fraction of a stable isoform. Examination of time needed for 90% initial activity loss revealed that immobilisation prolonged that time from 8 min (native enzyme) up to 155 min (SBA-15SF).

scholarly journals Functionalized Ordered Mesoporous Silicas (MCM-41): Synthesis and Applications in Catalysis

Catalysts ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 617 ◽  
Author(s):  
Gabriel Martínez-Edo ◽  
Alba Balmori ◽  
Iris Pontón ◽  
Andrea Martí del Rio ◽  
David Sánchez-García
Keyword(s):  
Mesoporous Silica ◽  
Pore Structure ◽  
Metallic Nanoparticles ◽  
Mesoporous Silicas ◽  
Acid Catalysts ◽  
Catalytic Systems ◽  
Research Attention ◽  
Ordered Mesoporous ◽  
Regioselective Functionalization ◽  
Mcm 41

Mesoporous silica sieves are among the most studied nano-objects due to their stable pore structure and easy preparation. In particular, MCM-41 have attracted increasing research attention due to their chemical versatility. This review focuses on the synthesis and regioselective functionalization of MCM-41 to prepare catalytic systems. The topics covered are: mono and di-functionalized MCM-41 as basic and acid catalysts, catalysts based on metallic complexes and heteropolyacids supported onto MCM-41, metallic nanoparticles embed onto functionalized MCM-41 and magnetic MCM-41 for catalytic purposes.

Lower Closure Point of Adsorption Hysteresis in Ordered Mesoporous Silicas

Langmuir ◽  
2007 ◽  
Vol 23 (22) ◽  
pp. 11021-11026 ◽  
Author(s):  
Kunimitsu Morishige ◽  
Mayumi Ishino
Keyword(s):  
Mesoporous Silicas ◽  
Ordered Mesoporous ◽  
Lower Closure ◽  
Adsorption Hysteresis
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