Combination of ordered mesoporous silica MCM-41 and layered titanosilicate JDF-L1 fillers for 6FDA-based copolyimide mixed matrix membranes

2013 ◽  
Vol 431 ◽  
pp. 163-170 ◽  
Author(s):  
Alejandro Galve ◽  
Daniel Sieffert ◽  
Claudia Staudt ◽  
Montserrat Ferrando ◽  
Carme Güell ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Mixed Matrix Membranes ◽  
Ordered Mesoporous Silica ◽  
Mixed Matrix ◽  
Ordered Mesoporous ◽  
Mcm 41 ◽  
Matrix Membranes

Investigation of the silica pore size effect on the performance of polysulfone (PSf) mixed matrix membranes (MMMs) for gas separation

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Gholamhossein Vatankhah ◽  
Babak Aminshahidy
Keyword(s):  
Mesoporous Silica ◽  
Pore Size ◽  
Gas Separation ◽  
Gas Permeation ◽  
Mixed Matrix Membranes ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Small Pore ◽  
Mcm 41 ◽  
Matrix Membranes

Abstract MCM-41 and SBA-15 mesoporous silica materials with different pore sizes (3.08 nm for small pore size MCM-41 (P 1), 5.89 nm for medium pore size SBA-15 (P 2), and 7.81 nm for large pore size SBA-15 (P 3)) were synthesized by the hydrothermal method and then functionalized with 3-aminopropyltrietoxysilane by postsynthesis treatments. Next, polysulfone-mesoporous silica mixed matrix membranes (MMMs) were prepared by the solution casting method. The obtained materials and MMMs were characterized by various techniques including X-ray diffraction, scanning electron microscopy, and N2 adsorption-desorption, and Brunauer-Emmett-Teller method to examine the crystallinity, morphology, and particle size, pore volume, specific surface area, and pore size distribution, respectively. Finally, the gas permeation rates of prepared MMMs were measured in 8 bar and 25 °C and the effect of pore size of modified and unmodified mesoporous silica on the gas separation performance of these MMMs were investigated. The experimental results indicate that the carbon dioxide (CO2) and methane (CH4) permeability and CO2/CH4 selectivity were increased with an enhancement in the particle pore size.

Mesoporous Silica Sphere−Polysulfone Mixed Matrix Membranes for Gas Separation

Langmuir ◽  
2009 ◽  
Vol 25 (10) ◽  
pp. 5903-5909 ◽  
Author(s):  
Beatriz Zornoza ◽  
Silvia Irusta ◽  
Carlos Téllez ◽  
Joaquín Coronas
Keyword(s):  
Mesoporous Silica ◽  
Gas Separation ◽  
Silica Sphere ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix ◽  
Mesoporous Silica Sphere ◽  
Matrix Membranes

scholarly journals Determination of toluene hydrogenation kinetics with neutron diffraction

2016 ◽  
Vol 18 (26) ◽  
pp. 17237-17243 ◽  
Author(s):  
Marta Falkowska ◽  
Sarayute Chansai ◽  
Haresh G. Manyar ◽  
Lynn F. Gladden ◽  
Daniel T. Bowron ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Mesoporous Silica ◽  
Ordered Mesoporous Silica ◽  
Total Neutron ◽  
Toluene Hydrogenation ◽  
Ordered Mesoporous ◽  
Hydrogenation Kinetics ◽  
Hydrogenation Of Toluene ◽  
Mcm 41

Total neutron scattering has been used to follow the hydrogenation of toluene-d8 to methylcyclohexane-d14 over 3 wt% platinum supported on highly ordered mesoporous silica (MCM-41) at 298 K and under 150–250 mbar D2 pressure.

Templated self-assembly of ordered mesoporous silica on clay nanotubes

2019 ◽  
Vol 55 (38) ◽  
pp. 5507-5510 ◽  
Author(s):  
Aleksandr Glotov ◽  
Nikolay Levshakov ◽  
Anna Stavitskaya ◽  
Maria Artemova ◽  
Pavel Gushchin ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Self Assembly ◽  
Catalytic Properties ◽  
Ordered Mesoporous Silica ◽  
Ordered Mesoporous ◽  
Clay Nanotubes ◽  
Mcm 41

Self-assembly of ordered silica arrays on clay nanotubes resulted in mesoporous MCM-41 type materials with enhanced catalytic properties.

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