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 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.

scholarly journals Carbon Molecular Sieve Membranes from Polyetherimide: Effect of Pyrolysis Temperature on O2/N2 Selectivity

2017 ◽  
Vol 14 (1) ◽  
Author(s):  
M. A. Ahmad ◽  
N. K. A. Rashid ◽  
B. H. Hameed
Keyword(s):  
Molecular Sieve ◽  
Pyrolysis Temperature ◽  
Gas Permeability ◽  
High Surface ◽  
High Surface Area ◽  
Carbon Layer ◽  
Separation Performance ◽  
Carbon Molecular Sieve ◽  
Carbon Structures ◽  
Thin Carbon

Carbon molecular sieve (CMS) membranes with excellent separation performance and stability appear to be promising candidate for gas separation. In this work, CMS membranes were formed by a thin carbon layer obtained by pyrolysis of a coated polyetherimide solution onto porous disk support. The pyrolysis temperatures were varied under inert condition. Results showed that the pyrolysis temperature played an important role in determining the gas permeability of CMS membranes. The CMS membrane prepared at pyrolysis temperature of 700°C shows high surface area and narrow PSD with well developed microporous carbon structures. The development of large pore occurs at higher pyrolysis temperature. The O2/N2 permselectivities of 2.86, 2.61 and 2.22, respectively were attained by CMS membranes prepared at pyrolyzed temperature of 700, 800 and 900°C.

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.

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
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