High-performance carbon molecular sieve membranes for hydrogen purification and pervaporation dehydration of organic solvents

2019 ◽  
Vol 7 (12) ◽  
pp. 7082-7091 ◽  
Author(s):  
P. H. Tchoua Ngamou ◽  
M. E. Ivanova ◽  
O. Guillon ◽  
W. A. Meulenberg
Keyword(s):  
Organic Solvents ◽  
Molecular Sieve ◽  
High Performance ◽  
Elevated Temperatures ◽  
Hydrogen Purification ◽  
Carbon Membrane ◽  
Carbon Molecular Sieve ◽  
High Hydrogen ◽  
Hydrogen Permeance

Successful synthesis of a ceramic-supported ultrathin carbon membrane with unprecedently high hydrogen permeance and outstanding H2/CO2, H2/N2 and H2/CH4 selectivities at elevated temperatures.

A Mini Review on Carbon Molecular Sieve Membrane for Oxygen Separation

2020 ◽  
Vol 4 (1) ◽  
pp. 23-35
Author(s):  
Fatin Nurwahdah Ahmad ◽  
Norazlianie Sazali ◽  
Mohd Hafiz Dzafran Othman
Keyword(s):  
Molecular Sieve ◽  
High Performance ◽  
Separation Performance ◽  
Carbon Membrane ◽  
Carbon Molecular Sieve ◽  
Carbon Membranes ◽  
Advantages And Disadvantages ◽  
Polymer Precursors ◽  
And Performance

Membrane-based technology has proved its practicality in gas separation through its performance. Various type of membranes has been explored, showing that each type of them have their own advantages and disadvantages. Polymeric membranes have been widely used to separate O2/N2, however, its drawbacks lead to the development of carbon molecular sieve membrane. Carbon molecular sieve membranes have demonstrated excellent separation performance for almost similar kinetic diameter molecules such as O2/N2. Many polymer precursors can be used to produce carbon molecular sieve membrane through carbonization process or also known as heat treatment. This paper discusses the variety of precursors and carbonization parameters to produce high quality and performance of carbon molecular sieve membranes.  This paper covers the evaluation in advancement and status of high-performance carbon membrane implemented for separating gas, comprising the variety of precursor materials and the fabrication process that involve many different parameters, also analysis of carbon membranes properties in separating various type of gas having high demand in the industries. The issues regarding the current challenges in developing carbon membrane and approaches with the purpose of solving and improving the performance and applications of carbon membrane are included in this paper. Also, the advantages of the carbon membrane compared to other types of membranes are highlighted. Observation and understanding the variables affecting the quality of membrane encourage the optimization of conditions and techniques in producing high-performance membrane.

scholarly journals PI/NCC- based carbon molecular sieve membranes for Hydrogen purification: Effect of aging times

2020 ◽  
Vol 736 ◽  
pp. 022003
Author(s):  
N Sazali ◽  
W N W Salleh ◽  
J P Siregar ◽  
M H D Othman ◽  
J Jaafar ◽  
...  
Keyword(s):  
Molecular Sieve ◽  
Hydrogen Purification ◽  
Carbon Molecular Sieve

Ultraselective carbon molecular sieve membrane for hydrogen purification

2020 ◽  
Vol 50 ◽  
pp. 16-24 ◽  
Author(s):  
Ruisong Xu ◽  
Liu He ◽  
Lin Li ◽  
Mengjie Hou ◽  
Yongzhao Wang ◽  
...  
Keyword(s):  
Molecular Sieve ◽  
Hydrogen Purification ◽  
Carbon Molecular Sieve

Effects of Pyrolysis Temperature on the Properties of Phenol-Formaldehyde Resin Based Carbon Molecular Sieve Membrane

2016 ◽  
Vol 848 ◽  
pp. 738-742
Author(s):  
Jia Jia Li ◽  
Wei Wei ◽  
Qiang Lin ◽  
Jing Yi Zhang
Keyword(s):  
Pore Size ◽  
Molecular Sieve ◽  
Pyrolysis Temperature ◽  
Phenol Formaldehyde ◽  
Phenol Formaldehyde Resin ◽  
Membrane Properties ◽  
Formaldehyde Resin ◽  
Carbon Membrane ◽  
Carbon Molecular Sieve ◽  
Effective Pore Size

Carbon molecular sieve membranes were prepared by pyrolysis of novolac type phenol-formaldehyde resin. The influences of pyrolysis temperature on membrane properties were investigated. By raising the pyrolysis temperature from 600 oC to 700 oC, the number of pores and effective pore size increased, thereby making the carbon membrane more productive but less selective. When the pyrolysis temperature from 700 oC to 900 oC, the effective pore size was reduced by sinter effect, thereby the gas permeation rate decreased and selectivity increased. The carbon membranes were characterized by elemental analysis, X-ray diffraction (XRD), and CO2 adsorption. H2, N2, CH4, and O2 were used for pure gas tests to evaluate membrane performance.

scholarly journals Ultra-dehydration of a reactive epichlorohydrin-containing organic mixture using a defect-free thin carbon molecular sieve composite membrane

2021 ◽  
Author(s):  
Seong-Joong Kim ◽  
YongSung Kwon ◽  
DaeHun Kim ◽  
Hosik Park ◽  
Young Hoon Cho ◽  
...  
Keyword(s):  
Composite Membrane ◽  
Molecular Sieve ◽  
Ternary Mixture ◽  
High Performance ◽  
Coating Process ◽  
Carbon Molecular Sieve ◽  
Organic Mixture ◽  
Thin Carbon

A high-performance thin carbon molecular sieve (CMS) composite membrane was prepared using a drop-coating process for dehydration of a ternary mixture (water/IPA/ECH) by a pervaporation process.

High performance carbon molecular sieve membranes derived from hyperbranched polyimide precursors for improved gas separation applications

Carbon ◽  
2013 ◽  
Vol 53 ◽  
pp. 101-111 ◽  
Author(s):  
Yi Hui Sim ◽  
Huan Wang ◽  
Fu Yun Li ◽  
Mei Ling Chua ◽  
Tai-Shung Chung ◽  
...  
Keyword(s):  
Gas Separation ◽  
Molecular Sieve ◽  
High Performance ◽  
Carbon Molecular Sieve

scholarly journals A Comparison of Carbon Molecular Sieve (CMS) Membranes with Polymer Blend CMS Membranes for Gas Permeation Applications

2012 ◽  
Vol 12 (1) ◽  
pp. 51 ◽  
Author(s):  
W.Z. Wan Nurul Huda ◽  
M.A. Ahmad
Keyword(s):  
Molecular Sieve ◽  
Dip Coating ◽  
Gas Permeation ◽  
Gravimetric Analysis ◽  
Carbon Membrane ◽  
Carbon Molecular Sieve ◽  
Coating Solution ◽  
Poly Ethylene ◽  
Dip Coating Technique ◽  
Thermal Stability Of

In this work, polyetherimide (PEI) was used as a main precursor to prepare carbon molecular sieve (CMS) membranes coated on a porous α-alumina disk via inert pyrolysis process. The PEI precursor was modified by blending with poly(ethylene glycol) (PEG) and its effect on the gas transport property of carbon membrane pyrolyzed at 873K was examined. The coating solution was prepared by PEI diluted in N-methylpyrrolidone (NMP) and coated onto support by dip-coating technique. Uniform CMS membranes were obtained by repeated dip-coating and pyrolysis of PEI and PEI/PEG. The structure and the single gas permeation properties of PEI and PEI/PEG CMS membrane were investigated.The thermal stability of CMS membranes prepared was determined by thermal gravimetric analysis (TGA). Elemental analysis, scanning electron microscopy (SEM), and Attenuated Total Reflectance Infrared (ATR-IR) Spectroscopy were employed to characterize the resulting membranes. The gas permeation of the CMS membranes was tested using three gases: methane, carbon dioxide, and oxygen and performed at 298K. The best performance was obtained by using PEI/PEG CMS membrane, whereby CO2 permeability should be 400.44x10-10 mol.m-2.s-1.Pa-1.

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