scholarly journals On the molecular mechanisms for the H2/CO2 separation performance of zeolite imidazolate framework two-layered membranes

2017 ◽  
Vol 8 (1) ◽  
pp. 325-333 ◽  
Author(s):  
Fernando Cacho-Bailo ◽  
Ismael Matito-Martos ◽  
Julio Perez-Carbajo ◽  
Miren Etxeberría-Benavides ◽  
Oğuz Karvan ◽  
...  
Keyword(s):  
Gas Separation ◽  
Molecular Mechanisms ◽  
Co2 Separation ◽  
Separation Performance ◽  
Zeolitic Imidazolate Framework ◽  
Combustion Gas

A zeolitic imidazolate framework two-layered membrane approach is simulated and experimentally validated to improve the pre-combustion gas separation.

scholarly journals Synthesis and Characterization of Hybrid Metal Zeolitic Imidazolate Framework Membrane for Efficient H2/CO2 Gas Separation

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5009
Author(s):  
Po-Hsueh Chang ◽  
Yuan-Tse Lee ◽  
Cheng-Hsiung Peng
Keyword(s):  
Carbon Dioxide ◽  
Surface Area ◽  
Gas Separation ◽  
Separation Factor ◽  
Gas Permeation ◽  
Co2 Separation ◽  
Separation Performance ◽  
Zeolitic Imidazolate Framework ◽  
Cobalt Ions ◽  
Mixed Metal

In this paper, we propose mixed metal ions in the node of the zeolitic imidazolate framework (ZIF) structure. The hybrid metal ZIF is formed for the gas separation of hydrogen and carbon dioxide. In the first stage, the nanoparticles were prepared as a coating on a substrate, and acting as secondary growing nuclei. The hybrid metal ZIF structures were characterized by X-ray diffractometry (XRD) and Fourier transform infrared spectroscopy (FTIR). N2 adsorption–desorption isotherms determined surface area, and scanning electron microscopy (SEM) was used to observe the microstructure and surface morphology. The hybrid metal ZIF-8-67 powder had the largest surface area (1260.40 m2 g−1), and the nanoparticles (100 nm) could be fully dense-coated on the substrate to benefit the subsequent membrane growth. In the second stage, we prepared the hybrid metal ZIF-8-67 membrane on the pre-seeding substrate with mixed metal nanoparticles of cobalt and zinc, by the microwave hydrothermal method. Cobalt ions were identified in the tetrahedral coordination through UV–Vis, and the membrane structure and morphology were determined by XRD and SEM. Finally, a gas permeation analyzer (GPA) was used to determine the gas separation performance of the hybrid metal ZIF-8-67 membrane. We successfully introduced zinc ions and cobalt ions into the ZIF structure, where cobalt had a strong interaction with CO2. Therefore, GPA analysis showed an excellent H2/CO2 separation factor due to lower CO2 permeability. The CO2 permeance was ~0.65 × 10−8 mol m−2 s−1 Pa−1, and the separation factors for H2/CO2 and H2/N2 were 9.2 and 2.9, respectively. Our results demonstrate that the hybrid metal ZIF-8-67 membrane has a superior H2/CO2 separation factor, which can be attributed to its very high specific surface area and structure. Based on the above, hybrid metal ZIF-8-67 membranes are expected to be applied in hydrogen or carbon dioxide gas separation and purification.

scholarly journals POLYSULFONE MEMBRANE WITH ZEOLITE FILLER FOR CO2/CH4 GAS SEPARATION: A REVIEW

2019 ◽  
Vol 1 (1) ◽  
pp. 10
Author(s):  
Indri Susanti
Keyword(s):  
Gas Separation ◽  
High Selectivity ◽  
Membrane Technology ◽  
Mixed Matrix Membrane ◽  
Co2 Separation ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Polysulfone Membrane ◽  
Trade Off ◽  
Review Mechanism

Membrane technology for gas separation applications are limited by a "trade-off" curve between permeability and selectivity. It show that permeability is high, selectivity obtained is low. This problem can be solved by preparation of Mixed-Matrix Membrane (MMMs) which can increase the value of permeability and selectivity. The MMMs with polysulfone polymers and zeolite fillers is more corresponding for gas separation. Addition of zeolite filler to polysulfone polymer in MMMs can improve the CO2 separation performance. In this review, mechanism of gas separation in MMMs was carried out in the application of CO2/CH4 gas separation. In addition, the effect of addition, size and pore of zeolite filler in MMMs for binary gas separation were also discussed in this review.

Comparing gas separation performance between all known zeolites and their zeolitic imidazolate framework counterparts

2016 ◽  
Vol 45 (1) ◽  
pp. 216-225 ◽  
Author(s):  
Paula Gómez-Álvarez ◽  
Said Hamad ◽  
Maciej Haranczyk ◽  
A. Rabdel Ruiz-Salvador ◽  
Sofia Calero
Keyword(s):  
Gas Separation ◽  
Gas Separations ◽  
Separation Performance ◽  
Zeolitic Imidazolate Framework ◽  
Gas Separation Performance

Candidate structures for environmental and industrial gas separations. No correlation between zeolites and their respective Zeolitic Imidazolate framework counterparts.

CO2 Separation Performance of Zeolitic Imidazolate Framework-8 Porous Slurry in a Pilot-Scale Packed Tower

2020 ◽  
Vol 59 (13) ◽  
pp. 6154-6163 ◽  
Author(s):  
Hai Li ◽  
Bei Liu ◽  
Mingke Yang ◽  
Ding Zhu ◽  
Zixuan Huang ◽  
...  
Keyword(s):  
Pilot Scale ◽  
Co2 Separation ◽  
Separation Performance ◽  
Zeolitic Imidazolate Framework ◽  
Packed Tower

A Robust Zeolitic Imidazolate Framework Membrane with High H2/CO2 Separation Performance under Hydrothermal Conditions

2019 ◽  
Vol 11 (17) ◽  
pp. 15748-15755 ◽  
Author(s):  
Zhan Li ◽  
PingPing Yang ◽  
Shichen Yan ◽  
Qianrong Fang ◽  
Ming Xue ◽  
...  
Keyword(s):  
Co2 Separation ◽  
Separation Performance ◽  
Hydrothermal Conditions ◽  
Zeolitic Imidazolate Framework

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.

scholarly journals Surface Modifications of Nanofillers for Carbon Dioxide Separation Nanocomposite Membrane

Symmetry ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1102
Author(s):  
Pei Sean Goh ◽  
Kar Chun Wong ◽  
Lukka Thuyavan Yogarathinam ◽  
Ahmad Fauzi Ismail ◽  
Mohd Sohaimi Abdullah ◽  
...  
Keyword(s):  
Surface Modification ◽  
Gas Separation ◽  
Wide Spectrum ◽  
Economic Benefits ◽  
Co2 Separation ◽  
Separation Performance ◽  
Nanocomposite Membranes ◽  
Separation Processes ◽  
Carbon Dioxide Separation ◽  
Surface Modified

CO2 separation is an important process for a wide spectrum of industries including petrochemical, refinery and coal-fired power plant industries. The membrane-based process is a promising operation for CO2 separation owing to its fundamental engineering and economic benefits over the conventionally used separation processes. Asymmetric polymer–inorganic nanocomposite membranes are endowed with interesting properties for gas separation processes. The presence of nanosized inorganic nanofiller has offered unprecedented opportunities to address the issues of conventionally used polymeric membranes. Surface modification of nanofillers has become an important strategy to address the shortcomings of nanocomposite membranes in terms of nanofiller agglomeration and poor dispersion and polymer–nanofiller incompatibility. In the context of CO2 gas separation, surface modification of nanofiller is also accomplished to render additional CO2 sorption capacity and facilitated transport properties. This article focuses on the current strategies employed for the surface modification of nanofillers used in the development of CO2 separation nanocomposite membranes. A review based on the recent progresses made in physical and chemical modifications of nanofiller using various techniques and modifying agents is presented. The effectiveness of each strategy and the correlation between the surface modified nanofiller and the CO2 separation performance of the resultant nanocomposite membranes are thoroughly discussed.

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