Gas permeation properties for the post-oxidized polyphenylene oxide (PPO) derived carbon membranes: Effect of the oxidation temperature

2006 ◽  
Vol 282 (1-2) ◽  
pp. 82-88 ◽  
Author(s):  
H LEE ◽  
D KIM ◽  
H SUDA ◽  
K HARAYA
Keyword(s):  
Gas Permeation ◽  
Oxidation Temperature ◽  
Carbon Membranes ◽  
Polyphenylene Oxide ◽  
Permeation Properties

scholarly journals Effect of heating rates on the microstructure and gas permeation properties of carbon membranes

2018 ◽  
Vol 14 (3) ◽  
pp. 378-381
Author(s):  
Norazlianie Sazali ◽  
Wan Norharyati Wan Salleh ◽  
Ahmad Fauzi Ismail ◽  
Kumaran Kadirgama ◽  
Mohamad Shahrizan Moslan ◽  
...  
Keyword(s):  
Heating Rate ◽  
High Performance ◽  
Room Temperature ◽  
Gas Permeation ◽  
Carbon Membrane ◽  
Heating Rates ◽  
Polymer Blending ◽  
Carbon Membranes ◽  
Permeation Properties ◽  
Fine Turning

High performance tubular carbon membrane (TCM’s) for CO2 separation were prepared by controlling the carbonization heating rates in range of 1-7 oC/min carbonized at 800 oC under Argon environment. A single permeation apparatus was used to determine the gas permeation properties of the membrane at room temperature. Fine turning of the carbonization condition was necessary to obtain the desired permeation properties. The preparation of PI/NCC-based TCM at low heating rate caused the gas permeance for the examined gas N2 and CO2 decreased whereas the selectivity of CO2/N2 increased. It was also identified that the gas permeation properties of the resultant TCM and its structure was highly affected by the heating rate. The best carbonization heating rate was found at 3oC/min for the fabrication of TCM derived via polymer blending of PI/NCC for CO2/N2 separation.

scholarly journals Effect of Stabilization Conditions on the Fabrication of Carbon Membranes for CO2 Separation

2017 ◽  
Vol 16 (1) ◽  
Author(s):  
W. N. W. Salleh ◽  
A. F. Ismail ◽  
M. A. Rahman
Keyword(s):  
Morphological Structure ◽  
Gas Permeation ◽  
Separation Performance ◽  
Separation Processes ◽  
Carbon Membranes ◽  
Air Atmosphere ◽  
N2 Atmosphere ◽  
Stabilization Condition ◽  
Molecular Sieving ◽  
Permeation Properties

Preparation of carbon membranes has rapidly attracted much attention in gas separation processes because of thermal and chemical stabilities and exhibit superior separation performance. Carbon hollow fiber membranes (CHFM)s derived from polymer blend of polyetherimide (PEI) and polyvinylpyrrolidone (PVP) were extensively prepared through stabilization under air atmosphere followed by carbonization under N2 atmosphere. The effects of the stabilization temperature on the morphological structure and gas permeation properties were investigated by means of scanning electron microscopy (SEM) and single gas permeation system. Experimental results indicate that the transport mechanism of small gas molecules of N2, CO2, and CH4 is dominated by the molecular sieving effect. Based on morphological structure and gas permeation properties, an optimum stabilization condition for the preparation of CHFM derived from PEI/PVP was found at 300°C under air atmosphere. The selectivity of about 55 and 41 for CO2/CH4 and CO2/N2, respectively, were obtained.

Gas Permeation Properties and Characterization of Polymer Based Carbon Membrane

2014 ◽  
Vol 983 ◽  
pp. 246-250
Author(s):  
Norazlianie Sazali ◽  
W.N.W. Salleh ◽  
Zawati Harun ◽  
Ahmad Fauzi Ismail
Keyword(s):  
Dip Coating ◽  
Industrial Applications ◽  
Nitrogen Atmosphere ◽  
Gas Permeation ◽  
Membrane Gas Separation ◽  
Carbon Membrane ◽  
Structural Morphology ◽  
Tubular Membrane ◽  
Carbon Membranes ◽  
Permeation Properties

Membrane gas separation is a forthcoming technology that advertised a great commercial potential in diverse industrial applications. Consequently, membrane-based natural gas processing has been among the fastest growing segments of the economic growth. The turbostratic structure of carbon membranes has been affirmed to accommodate with good separation selectivity for permanent gases. With that, the most auspicious technique acquired is by controlling the carbonization temperature during the carbon membrane fabrication. In this study, polymer-based carbon tubular membranes have been fabricated and characterized in terms of its structural morphology and gas permeation properties. Polyimide (Matrimid 5218) was used as a precursor for carbon tubular membrane preparation to produce high quality of carbon membrane via carbonization process. The polymer solution was coated on TiO2 –ZrO2 tubular tubes (Tami) by using dip-coating method. The polymer tubular membrane was then carbonized under Nitrogen atmosphere at 600, 750, and 850 ◦C. The structural morphology of the resultant carbon membranes was analyzed by means of scanning electron microscope (SEM). Pure gas permeation tests were performed using CO2 and N2 gases at 8 bars and room temperature. Based on the results, the highest CO2/ N2 selectivity of 79.53 was obtained for carbon membrane prepared at 850 oC.

Gas permeation properties of commercial polyphenylene oxide and Cardo-type polyimide hollow fiber membranes

2006 ◽  
Vol 51 (3) ◽  
pp. 359-366 ◽  
Author(s):  
M. Pourafshari Chenar ◽  
M. Soltanieh ◽  
T. Matsuura ◽  
A. Tabe-Mohammadi ◽  
C. Feng
Keyword(s):  
Hollow Fiber ◽  
Gas Permeation ◽  
Hollow Fiber Membranes ◽  
Polyphenylene Oxide ◽  
Fiber Membranes ◽  
Permeation Properties
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