H2 Selective Membranes for Precombustion Carbon Capture

Singh, Rajinder; Berchtold, Kathryn A.

doi:10.1016/b978-0-444-63259-3.00006-9

Cited by 4 publications

(7 citation statements)

References 110 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Membranes are one of the most promising technologies to compete with conventional separation processes for gas separations including post- and pre-combustion carbon capture. Studies on the use of polymeric membranes in an Integrated Gasification Combined Cycle (IGCC) power plant [1,2,3] show their viability and their competitiveness with the currently more developed solvent-based technology. Process simulations [1] have shown an advantage for hydrogen selective materials for this application and new membrane materials are currently under development [3].…”

Section: Introductionmentioning

confidence: 99%

“…Studies on the use of polymeric membranes in an Integrated Gasification Combined Cycle (IGCC) power plant [1,2,3] show their viability and their competitiveness with the currently more developed solvent-based technology. Process simulations [1] have shown an advantage for hydrogen selective materials for this application and new membrane materials are currently under development [3]. The performance of the materials in the relatively harsh conditions of the separation (50 bars and 200 °C) needs to be investigated before production can be scaled up [4].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Temperature and Pressure Dependence of Gas Permeation in a Microporous Tröger’s Base Polymer

et al. 2018

View full text Add to dashboard Cite

Gas transport properties of PIM-EA(H2)-TB, a microporous Tröger’s base polymer, were systematically studied over a range of pressure and temperature. Permeability coefficients of pure CO2, N2, CH4 and H2 were determined for upstream pressures up to 20 bar and temperatures up to 200 °C. PIM-EA(H2)-TB exhibited high permeability coefficients in absence of plasticization phenomena. The permeability coefficient of N2, CH4 and H2 increased with increasing temperature while CO2 permeability decreased with increasing temperature as expected for a glassy polymer. The diffusion and solubility coefficients were also analysed individually and compared with other polymers of intrinsic microporosity. From these results, the activation energies of permeation, diffusion and sorption enthalpies were calculated using an Arrhenius equation.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Temperature and Pressure Dependence of Gas Permeation in a Microporous Tröger’s Base Polymer

et al. 2018

View full text Add to dashboard Cite

show abstract

“…In the case of dense membranes, molecular transport occurs through a solution-diffusion (Sol-D) mechanism [120]. Thus, for the separation of hydrogen from other components in a gas mixture, both size (diffusivity) and the condensability (solubility) of the gases to be separated play important roles [92,108,111,120,121]. Transport mechanism for porous membranes ((I) Knudson diffusion, (II) surface diffuScheme 2. from light gas molecules, such as CO2, CO, CH4, H2O and impurities, e.g., H2S.…”

Section: Membrane Technologiesmentioning

confidence: 99%

“…The relationship between the permeability and temperature follows Arrhenius behaviour [ 142 ]:

where,

is the maximum permeability at infinitely high temperature,

is the activation energy for permeation, R is the universal gas constant, and T the absolute temperature. Similarly, the temperature dependence of the gas diffusion coefficient and solution coefficient can be expressed as follows (Equations (22) and (23)) [ 121 ]:

where, E d is the activation energy of diffusion, ΔH s is the partial molar sorption, D 0 and S 0 are the diffusivity and solubility, respectively, at infinite temperature [ 103 ]. Consequently, when n is 0.5, the flux can be written in terms of the so-called Richardson equation, where Equation (21) is substituted into Equation (19), as follows:

…”

Section: Hydrogen Separation/purification Technologiesmentioning

confidence: 99%

Recent Advances in Membrane-Based Electrochemical Hydrogen Separation: A Review

2021

View full text Add to dashboard Cite

In this paper an overview of commercial hydrogen separation technologies is given. These technologies are discussed and compared—with a detailed discussion on membrane-based technologies. An emerging and promising novel hydrogen separation technology, namely, electrochemical hydrogen separation (EHS) is reviewed in detail. EHS has many advantages over conventional separation systems (e.g., it is not energy intensive, it is environmentally-friendly with near-zero pollutants, it is known for its silent operation, and, the greatest advantage, simultaneous compression and purification can be achieved in a one-step operation). Therefore, the focus of this review is to survey open literature and research conducted to date on EHS. Current technological advances in the field of EHS that have been made are highlighted. In the conclusion, literature gaps and aspects of electrochemical hydrogen separation, that require further research, are also highlighted. Currently, the cost factor, lack of adequate understanding of the degradation mechanisms related to this technology, and the fact that certain aspects of this technology are as yet unexplored (e.g., simultaneous hydrogen separation and compression) all hinder its widespread application. In future research, some attention could be given to the aforementioned factors and emerging technologies, such as ceramic proton conductors and solid acids.

show abstract

“…Carbon dioxide makes a substantive contribution to recent climate change trends. In precombustion carbon capture, the water–gas shift reaction of the CO in the syngas with steam is a fundamental step toward generating H 2 and CO 2 . The membrane-based separation approach is particularly useful for the recovery of high-purity H 2 at the permeate side alongside a highly enriched CO 2 retentate stream. , …”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional COF–Three-Dimensional MOF Dual-Layer Membranes with Unprecedentedly High H₂/CO₂ Selectivity and Ultrahigh Gas Permeabilities

Ben

Qiu

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Covalent organic framework (COF) membranes have emerged as state-of-the-art membranes with exceptional gas separation performances. However, the COF membranes are restricted to three-dimensional (3D) COFs, while the two-dimensional (2D) COF membrane remains a relatively uncharted territory. In addition, the major part of the scientific fraternity working in this field shares the dream to prepare 2D COF membranes with crystallographic preferential orientation. Here, we present a general strategy for the fabrication of oriented 2D COF membranes which is based on the incorporation of an intermediate metal-organic framework (MOF) layer. The 2D COF membrane is endowed with real ordered one-dimensional (1D) channels. This specially designed membrane that comprises two judiciously selected porous frameworks shows ultrahigh gas permeability and selectivity far surpassing the present Robeson upper bound. This contribution paves a new avenue to explore oriented 2D COF membranes as prospective high-performing membranes rendering a sustainable route for H 2 /CO 2 separation.

show abstract

H2 Selective Membranes for Precombustion Carbon Capture

Cited by 4 publications

References 110 publications

Temperature and Pressure Dependence of Gas Permeation in a Microporous Tröger’s Base Polymer

Temperature and Pressure Dependence of Gas Permeation in a Microporous Tröger’s Base Polymer

Recent Advances in Membrane-Based Electrochemical Hydrogen Separation: A Review

Two-Dimensional COF–Three-Dimensional MOF Dual-Layer Membranes with Unprecedentedly High H₂/CO₂ Selectivity and Ultrahigh Gas Permeabilities

Contact Info

Product

Resources

About

H2 Selective Membranes for Precombustion Carbon Capture

Cited by 4 publications

References 110 publications

Temperature and Pressure Dependence of Gas Permeation in a Microporous Tröger’s Base Polymer

Temperature and Pressure Dependence of Gas Permeation in a Microporous Tröger’s Base Polymer

Recent Advances in Membrane-Based Electrochemical Hydrogen Separation: A Review

Two-Dimensional COF–Three-Dimensional MOF Dual-Layer Membranes with Unprecedentedly High H2/CO2 Selectivity and Ultrahigh Gas Permeabilities

Contact Info

Product

Resources

About

Two-Dimensional COF–Three-Dimensional MOF Dual-Layer Membranes with Unprecedentedly High H₂/CO₂ Selectivity and Ultrahigh Gas Permeabilities