scholarly journals Molecular Weight and Gas Separation Performance of Polyimide Membrane: Insight into Role of Imidization Route

2020 ◽  
Vol 24 (3) ◽  
Author(s):  
P. C. Tan ◽  
D. Y. Yiauw ◽  
G. H. Teoh ◽  
S. C. Low ◽  
Z. A. Jawad
Keyword(s):  
Molecular Weight ◽  
Gas Separation ◽  
Separation Performance ◽  
Synthesis Conditions ◽  
Polyimide Membrane ◽  
Gas Transport Properties ◽  
Thermal Imidization ◽  
Insight Into ◽  
Gas Separation Performance

Various methods have been explored to improve the gas separation performance of polyimide membrane for more viable industrial commercialization. Generally, polyimide membrane can be synthesized via two different methods: chemical imidization and thermal imidization routes. Due to the markedly different membrane synthesis conditions, the influence of imidization methods on the gas transport properties of resulting membrane is worthy of investigation. The polyimide produced from two imidization methods was characterized for its molecular weight. In overall, the molecular weight of thermally imidized polyimide was higher than that of chemically imidized one except ODPA-6FpDA:DABA as it was prone to depropagation at high temperature. It was observed that the chemically imidized ODPA-6FpDA:DABA membrane possessed better gas separation performance than the thermally imidized counterpart. In particular, it showed 12 times higher CO2 permeability (19.21 Barrer) with CO2/N2 selectivity of 5. After crosslinking, the CO2/N2 selectivity of the polyimide membrane was further improved to 11.8 at 6 bar of permeation pressure.

Gas Separation Performance of a Hollow-Filament Type Polyimide Membrane Module for a Compact Tritium Removal System

1995 ◽  
Vol 28 (3P2) ◽  
pp. 1503-1508 ◽  
Author(s):  
Takumi Hayashi ◽  
Masayuki Yamada ◽  
Takumi Suzuki ◽  
Yuji Matsuda ◽  
Kenji Okuno
Keyword(s):  
Gas Separation ◽  
Membrane Module ◽  
Separation Performance ◽  
Polyimide Membrane ◽  
Gas Separation Performance ◽  
Filament Type ◽  
Removal System

scholarly journals The utilization of micro-mesoporous carbon-based filler in the P84 hollow fibre membrane for gas separation

2021 ◽  
Vol 8 (2) ◽  
Author(s):  
Triyanda Gunawan ◽  
Nurul Widiastuti ◽  
Hamzah Fansuri ◽  
Wan Norharyati Wan Salleh ◽  
Ahmad Fauzi Ismail ◽  
...  
Keyword(s):  
Gas Separation ◽  
Mesoporous Carbon ◽  
Zeolite Y ◽  
Membrane Surface ◽  
Separation Performance ◽  
Potential Candidate ◽  
Impregnation Method ◽  
Hard Template ◽  
Polyimide Membrane ◽  
Gas Separation Performance

This research involved carrying out a unique micro-mesoporous carbon particle incorporation into P84 co-polyimide membrane for improved gas separation performance. The carbon filler was prepared using a hard template method from zeolite and known as zeolite-templated carbon (ZTC). This research aims to study the loading amount of ZTC into P84 co-polyimide toward the gas separation performance. The ZTC was prepared using simple impregnation method of sucrose into hard template of zeolite Y. The SEM result showing a dispersed ZTC particle on the membrane surface and cross-section. The pore size distribution (PSD) of ZTC revealed that the particle consists of two characteristics of micro and mesoporous region. It was noted that with only 0.5 wt% of ZTC addition, the permeability was boosted up from 4.68 to 7.06 and from 8.95 to 13.15 barrer, for CO 2 and H 2 respectively when compared with the neat membrane. On the other hand, the optimum loading was at 1 wt%, where the membrane received thermal stability boost of 10% along with the 62.4 and 35% of selectivity boost of CO 2 /CH 4 and H 2 /CH 4 , respectively. It was noted that the position of the filler on the membrane surface was significantly affecting the gas transport mechanism of the membrane. Overall, the results demonstrated that the addition of ZTC with proper filler position is a potential candidate to be applicable in the gas separation involving CO 2 and H 2 .

The role of geometrically different carbon-based fillers on the formation and gas separation performance of nanocomposite membranes

Carbon ◽  
2019 ◽  
Vol 149 ◽  
pp. 33-44 ◽  
Author(s):  
Kar Chun Wong ◽  
Pei Sean Goh ◽  
Takaaki Taniguchi ◽  
Ahmad Fauzi Ismail ◽  
Khalisah Zahri
Keyword(s):  
Gas Separation ◽  
Separation Performance ◽  
Nanocomposite Membranes ◽  
Gas Separation Performance ◽  
Carbon Based

scholarly journals Pebax-based composite membranes with high gas transport properties enhanced by ionic liquids for CO2 separation

RSC Advances ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. 6422-6431 ◽  
Author(s):  
Mengdie Li ◽  
Xiangping Zhang ◽  
Shaojuan Zeng ◽  
Lu bai ◽  
Hongshuai Gao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Transport Properties ◽  
Gas Separation ◽  
Gas Transport ◽  
Composite Membranes ◽  
Co2 Separation ◽  
Separation Performance ◽  
Gas Transport Properties ◽  
Gas Separation Performance

A series of composite membranes with high gas transport properties enhanced by IL and ZIF-8 have been developed. The influence of ionic liquid and ZIF-8 addition on gas separation performance were systematically investigated.

Photo-oxidative PIM-1 based mixed matrix membranes with superior gas separation performance

2015 ◽  
Vol 3 (33) ◽  
pp. 17273-17281 ◽  
Author(s):  
Lin Hao ◽  
Kuo-Sung Liao ◽  
Tai-Shung Chung
Keyword(s):  
Transport Properties ◽  
Gas Separation ◽  
Gas Transport ◽  
Mixed Matrix Membranes ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Gas Transport Properties ◽  
Gas Separation Performance ◽  
Matrix Membranes

Photo-oxidative PIM-1 incorporated with ZIF-71 form well-dispersed mixed-matrix membranes with enhanced gas transport properties. These membranes have impressive separation performance for CO2/CH4 and O2/N2.

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