Pervaporation of water/ethanol mixtures through polyimide based mixed matrix membranes containing ZIF-8, ordered mesoporous silica and ZIF-8-silica core-shell spheres

2014 ◽  
Vol 90 (4) ◽  
pp. 669-677 ◽  
Author(s):  
Alina Kudasheva ◽  
Sara Sorribas ◽  
Beatriz Zornoza ◽  
Carlos Téllez ◽  
Joaquín Coronas
Keyword(s):  
Mesoporous Silica ◽  
Mixed Matrix Membranes ◽  
Core Shell ◽  
Ordered Mesoporous Silica ◽  
Mixed Matrix ◽  
Ordered Mesoporous ◽  
Silica Core ◽  
Matrix Membranes

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

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 Improvement in Comprehensive Properties of Poly(Methyl Methacrylate)-Based Gel Polymer Electrolyte by a Core-Shell Poly(Methyl Methacrylate)-Grafted Ordered Mesoporous Silica

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Lixin Xu ◽  
Feng Xu ◽  
Feng Chen ◽  
Jintao Yang ◽  
Mingqiang Zhong
Keyword(s):  
Ionic Conductivity ◽  
Mesoporous Silica ◽  
Methyl Methacrylate ◽  
Gel Polymer Electrolyte ◽  
Core Shell ◽  
Ordered Mesoporous Silica ◽  
Exterior Surface ◽  
Poly Methyl Methacrylate ◽  
Comprehensive Properties ◽  
Ordered Mesoporous

A novel strategy, herein, is demonstrated for improving comprehensive properties of poly (methyl methacrylate)(PMMA)-based gel polymer electrolyte (GPE) with a core-shell PMMA-grafted ordered mesoporous silica (OMS-g-PMMA). The OMS-g-PMMA was synthesized by surface-initiated atom transfer radical polymerization of methyl methacrylate from the exterior surface of OMS particle. A series of PMMA-based GPE membrances, filled with the OMS-g-PMMA of different contents, were further prepared by solution casting technique. The OMS-g-PMMA was confirmed to possess regular core-shell structure, in which a PMMA shell is chemically grafted to the exterior surface of silica core remaining intact mesoporous characteristics. Compared to the bare OMS, the OMS-g-PMMA is found to more effectively improve the comprehensive properties of PMMA-based GPE including ionic conductivity, thermal stability, and mechanical properties as well. For the PMMA-based GPE filled with 15 phr OMS-g-PMMA, the ionic conductivity at 25°C reaches 1.59 × 10−4 S⋅cm−1, which is higher by nearly two orders than that of the corresponding filler-free parent GPE. Meanwhile, the tensile strength and Young's modulus increase by 2.39 and 2.41 times, respectively, with an improvement in glass-transition temperature (Tg) about 10°C. The excellent comprehensive properties make the PMMA-based GPE filled with OMS-g-PMMA as potential candidate for electrochemical devices.

scholarly journals Adsorption deformation of microporous composites

2016 ◽  
Vol 45 (10) ◽  
pp. 4136-4140 ◽  
Author(s):  
François-Xavier Coudert ◽  
Alain H. Fuchs ◽  
Alexander V. Neimark
Keyword(s):  
Theoretical Model ◽  
Mixed Matrix Membranes ◽  
Core Shell ◽  
Mixed Matrix ◽  
Practical Applications ◽  
Adsorption Deformation ◽  
Nanostructured Composites ◽  
Shell Particles ◽  
Adsorbent Materials ◽  
Matrix Membranes

We demonstrate a theoretical model to describe the behavior of flexible adsorbent materials, or soft porous crystals, when used in practical applications as nanostructured composites such as core–shell particles or mixed 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.

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