Gas permeation properties of cellulose acetate/silica nanocomposite membrane

2017 ◽  
Vol 37 (6) ◽  
pp. 2043-2052 ◽  
Author(s):  
Mohaddeseh Najafi ◽  
Morteza Sadeghi ◽  
Ali Bolverdi ◽  
Mahdi Pourafshari Chenar ◽  
Majid Pakizeh
Keyword(s):  
Cellulose Acetate ◽  
Gas Permeation ◽  
Nanocomposite Membrane ◽  
Silica Nanocomposite ◽  
Permeation Properties

Asymmetric Polysulfone-Cloisite 15A® Nanocomposite Membrane for Gas Separation

2014 ◽  
Vol 69 (9) ◽  
Author(s):  
A. K. Zulhairun ◽  
A. F. Ismail ◽  
A. Mustafaa
Keyword(s):  
Gas Permeation ◽  
Nanocomposite Membrane ◽  
Co2 Removal ◽  
Nanocomposite Membranes ◽  
Solution Intercalation ◽  
Gas Streams ◽  
Gas Selectivity ◽  
Clay Layers ◽  
Permeation Properties ◽  
Cloisite 15A

Defect-free asymmetric Polysulfone (PSF)-Cloisite 15A® nanocomposite membrane was fabricated with the intention to investigate the gas permeation behavior of the resulting material combination. Various weights of Cloisite 15A® organoclay were added into PSF matrices by solution intercalation method assisted by sonication dispersion. The gas permeation properties of the PSF-Cloisite 15A® nanocomposite membranes were evaluated by pure gases: nitrogen, methane, and carbon dioxide. The distribution of Cloisite 15A® particles in PSF matrices was analyzed by SEM. The gas flux of the PSF-Cloisite 15A® nanocomposite membranes declined as the Cloisite 15A® weight loading increased. The CO2/CH4 and CO2/N2 pure gas selectivity of PSF nanocomposite with 0.5 wt. % of Cloisite 15A® loading exceeded that of neat PSF membrane. The decrease in flux followed by the increase in pure gas selectivity was related to the way in which the clay layers were dispersed in the PSF matrices. Considerable improvement in CO2 selectivity was attainable even by incorporating low amount of such layered structure nanoparticle which can be attractive in producing robust materials for CO2-removal membranes from CO2-containing gas streams such as post-combustion and natural gas streams.

scholarly journals Effect of coagulant bath on the gas permeation properties of cellulose acetate asymmetric membrane

2016 ◽  
Vol 36 ◽  
pp. 012009 ◽  
Author(s):  
F. Mohamed ◽  
H. Hasbullah ◽  
W. N. R. Jami'an ◽  
W. N. H. W. Salleh ◽  
N. Ibrahim ◽  
...  
Keyword(s):  
Cellulose Acetate ◽  
Gas Permeation ◽  
Asymmetric Membrane ◽  
Permeation Properties

Gas permeation properties of ethylene vinyl acetate–silica nanocomposite membranes

2008 ◽  
Vol 322 (2) ◽  
pp. 423-428 ◽  
Author(s):  
Morteza Sadeghi ◽  
Ghader Khanbabaei ◽  
Amir H. Saeedi Dehaghani ◽  
Mohammad Sadeghi ◽  
Mohammad A. Aravand ◽  
...  
Keyword(s):  
Vinyl Acetate ◽  
Ethylene Vinyl Acetate ◽  
Gas Permeation ◽  
Nanocomposite Membranes ◽  
Silica Nanocomposite ◽  
Permeation Properties

Synthesis, characterization, and gas permeation properties of the silyl derivatives of cellulose acetate

2007 ◽  
Vol 305 (1-2) ◽  
pp. 136-145 ◽  
Author(s):  
Ryuhei Morita ◽  
Fareha Zafar Khan ◽  
Toshikazu Sakaguchi ◽  
Masashi Shiotsuki ◽  
Yoshiyuki Nishio ◽  
...  
Keyword(s):  
Cellulose Acetate ◽  
Gas Permeation ◽  
Silyl Derivatives ◽  
Derivatives Of ◽  
Permeation Properties

scholarly journals Gas Permeation Properties of High-Silica CHA-Type Zeolite Membrane

Membranes ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 249
Author(s):  
Yasuhisa Hasegawa ◽  
Chie Abe ◽  
Mayumi Natsui ◽  
Ayumi Ikeda
Keyword(s):  
Molecular Size ◽  
Gas Permeation ◽  
Zeolite Membrane ◽  
Type Zeolite ◽  
High Silica ◽  
Separation Of Co2 ◽  
Α Al2o3 ◽  
Separation Performances ◽  
Molecular Sieving ◽  
Permeation Properties

The polycrystalline CHA-type zeolite layer with Si/Al = 18 was formed on the porous α-Al2O3 tube in this study, and the gas permeation properties were determined using single-component H2, CO2, N2, CH4, n-C4H10, and SF6 at 303–473 K. The membrane showed permeation behavior, wherein the permeance reduced with the molecular size, attributed to the effect of molecular sieving. The separation performances were also determined using the equimolar mixtures of N2–SF6, CO2–N2, and CO2–CH4. As a result, the N2/SF6 and CO2/CH4 selectivities were as high as 710 and 240, respectively. However, the CO2/N2 selectivity was only 25. These results propose that the high-silica CHA-type zeolite membrane is suitable for the separation of CO2 from CH4 by the effect of molecular sieving.

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