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



2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Gholamhossein Vatankhah ◽  
Babak Aminshahidy

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.



2011 ◽  
Vol 34 (1-3) ◽  
pp. 211-215 ◽  
Author(s):  
Petr Sysel ◽  
Evgenia Minko ◽  
Michal Hauf ◽  
Karel Friess ◽  
Vladimir Hynek ◽  
...  


Author(s):  
Griselda Castruita‐de León ◽  
Ángel de Jesús Montes‐Luna ◽  
Claudia Y. Yeverino‐Miranda ◽  
Germán Alvarado‐Tenorio ◽  
Héctor Iván Meléndez‐Ortiz ◽  
...  


2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mehtap Safak Boroglu ◽  
Ismail Boz ◽  
Busra Kaya

Abstract In our study, the synthesis of zeolitic imidazolate framework (ZIF-12) crystals and the preparation of mixed matrix membranes (MMMs) with various ZIF-12 loadings were targeted. The characterization of ZIF-12 and MMMs were carried out by Fourier transform infrared spectroscopy analysis, thermogravimetric analysis, scanning electron microscopy (SEM), and thermomechanical analysis. The performance of MMMs was measured by the ability of binary gas separation. Commercial polyetherimide (PEI-Ultem® 1000) polymer was used as the polymer matrix. The solution casting method was utilized to obtain dense MMMs. In the SEM images of ZIF-12 particles, the particles with a rhombic dodecahedron structure were identified. From SEM images, it was observed that the distribution of ZIF-12 particles in the MMMs was homogeneous and no agglomeration was present. Gas permeability experiments of MMMs were measured for H2, CO2, and CH4 gases at steady state, at 4 bar and 35 °C by constant volume-variable pressure method. PEI/ZIF-12-30 wt% MMM exhibited high permeability and ideal selectivity values for H2/CH4 and CO2/CH4 were P H 2 / CH 4 = 331.41 ${P}_{{\text{H}}_{2}/{\text{CH}}_{4}}=331.41$ and P CO 2 / CH 4 = 53.75 ${P}_{{\text{CO}}_{2}/{\text{CH}}_{4}}=53.75$ gas pair.



2021 ◽  
Vol 11 (2) ◽  
pp. 313-330
Author(s):  
Ovaid Mehmood ◽  
Sarah Farrukh ◽  
Arshad Hussain ◽  
Mohammad Younas ◽  
Zarrar Salahuddin ◽  
...  




2012 ◽  
Vol 35 (5) ◽  
pp. 885-892 ◽  
Author(s):  
H. Karkhanechi ◽  
H. Kazemian ◽  
H. Nazockdast ◽  
M. R. Mozdianfard ◽  
S. M. Bidoki


2014 ◽  
Vol 107 ◽  
pp. 66-75 ◽  
Author(s):  
Philipp Burmann ◽  
Beatriz Zornoza ◽  
Carlos Téllez ◽  
Joaquín Coronas


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