Upper bound of polymeric membranes for mixed-gas CO2/CH4 separations

Lin, Haiqing; Yavari, Milad

doi:10.1016/j.memsci.2014.10.007

Cited by 126 publications

(95 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A similar trend was observed by Lin and Yavari [38], by Houde et al [39] and Scholes et al [37], who confirmed the competitive sorption between CO 2 and CH 4 ( Table 5) in cellulose acetate, polyphenilene oxide and polyimmide, respectively; CO 2 plasticization which causes membrane swelling also plays a crucial role. The CO 2 /CH 4 selectivity value in mixtures was lower for ca.…”

Section: Measurements Feeding Dry Gas Mixturessupporting

confidence: 85%

“…Scholes et al [37] focused on CO 2 and CH 4 competitive sorption in a Matrimid membrane. Lin and Yavari [38] simulated on a free volumebased model the decreasing trend of CO 2 /CH 4 selectivity in mixture. As experimentally observed, CO 2 promotes CH 4 permeation; its concentration of 30-50 % molar in the feed mixtures is probably enough to significantly reduce the CH 4 -Matrimid interactions (sorption) with respect to CH 4 when fed alone.…”

Section: Measurements Feeding Dry Gas Mixturesmentioning

confidence: 99%

See 1 more Smart Citation

CO2/CH4 separation by means of Matrimid hollow fibre membranes

et al. 2016

View full text Add to dashboard Cite

CO 2 /CH 4 mixtures separation was investigated using Matrimid Ò 5218 hollow fibre membranes and measuring the membrane flux feeding singly CH 4 and CO 2 and their mixtures, with CH 4 concentration ranging from 5 to 70 % molar. Specific attention was paid to membrane properties at a high temperature (up to 75°C) and feeding humidified streams, not yet particularly investigated, in a pressure range 400-600 kPa. The membrane properties were restored when water vapour was removed and temperature decreased stating the excellent hydro-thermal stability of these membranes. Maps of the separation performance were also calculated for a range of operating conditions wider than the experimental one paying specific attention to the feed/permeate pressure ratio further to membrane selectivity and permeance. Single and multistage membrane separation systems were investigated using these maps. The prepared Matrimid Ò 5218 hollow fibres showed very good performance in terms of flux and selectivity for temperatures up to 60°C, also in steam saturated conditions, allowing a methane concentration meeting the specification for its injection into the grid.

show abstract

Section: Measurements Feeding Dry Gas Mixturessupporting

confidence: 85%

Section: Measurements Feeding Dry Gas Mixturesmentioning

confidence: 99%

CO2/CH4 separation by means of Matrimid hollow fibre membranes

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Compared to other gas separation technologies such as adsorption, absorption, and cryogenics, membrane technology has many advantages including facile preparation processes, low energy cost, and remarkable reliability [1][2][3][4][5]. With these promising features, membrane technology has been a significant part of the strategy for the CO 2 removal industry and advanced commercial applications.…”

Section: Introductionmentioning

confidence: 99%

A highly selective PEGBEM-g-POEM comb copolymer membrane for CO2/N2 separation

Park

Lee

Jung

et al. 2015

Journal of Membrane Science

View full text Add to dashboard Cite

“…Obviously, they cannot be applied for gas mixtures especially in highly plasticizing environment such as CO 2 . Lin and Yavari [10] extended the free volume theory to quantitatively describe the upper bounds for the mixed gas CO 2 /CH 4 separations using polymeric membranes. The theory relates the reduction in glass transition temperature to the CO 2 -induced plasticization effect.…”

Section: Fundamental Approaches Employed To Describe Permeability Andmentioning

confidence: 99%

“…Unfortunately, an upper-bound or trade-off between permeability and selectivity exists for various polymeric membranes and gas pairs as first reported by Robeson [1]. The upper-bound has been theoretically rationalized by different groups [2][3][4][5][6][7][8][9][10]. The predictions from the model developed by Freeman [2] suggested that membranes with a high fractional free volume but narrow free volume distribution are needed in order to exceed the upper-bound.…”

Section: Introductionmentioning

confidence: 99%

A Review on Computational Modeling Tools for MOF-Based Mixed Matrix Membranes

Keskın

Altınkaya

2019

Computation

View full text Add to dashboard Cite

Computational modeling of membrane materials is a rapidly growing field to investigate the properties of membrane materials beyond the limits of experimental techniques and to complement the experimental membrane studies by providing insights at the atomic-level. In this study, we first reviewed the fundamental approaches employed to describe the gas permeability/selectivity trade-off of polymer membranes and then addressed the great promise of mixed matrix membranes (MMMs) to overcome this trade-off. We then reviewed the current approaches for predicting the gas permeation through MMMs and specifically focused on MMMs composed of metal organic frameworks (MOFs). Computational tools such as atomically-detailed molecular simulations that can predict the gas separation performances of MOF-based MMMs prior to experimental investigation have been reviewed and the new computational methods that can provide information about the compatibility between the MOF and the polymer of the MMM have been discussed. We finally addressed the opportunities and challenges of using computational studies to analyze the barriers that must be overcome to advance the application of MOF-based membranes.Computation 2019, 7, 36 2 of 26 these porous fillers, metal organic frameworks (MOFs) have received special attention due to their well-defined structures and tunable pore sizes.MOFs combine the properties of both inorganic and organic materials since they are assembled using metal ions with organic linkers [14]. The most important challenges involved in fabricating the MOF-based MMMs are to prevent the aggregation of the particles in the polymer and poor interaction between the particles and the polymer matrix. Rubbery polymers favor the formation of a defect-free interface between the particles and matrix due to their high degree of mobility. Flexible chains in the rubbery polymers make the membrane highly permeable, consequently, the gas transport is mainly dominated by the polymer matrix and the contribution of the MOF particles to the overall transport becomes very small. Glassy polymers have rigid chain structures, thus, they exhibit superior separation performance. On the other hand, the rigid structure weakens the interaction between polymers and particles. MOFs contain organic functionality in their bridging ligands, which can interact with the organic functionality in polymers. Numerous numbers of linkers and metal ions can be combined to fabricate MOFs, which can then be used as fillers in hundreds of different types of polymers; consequently, experimental screening of all MOF/polymer combinations is practically impossible. At this stage, computational tools play a key role in extensive screening of a large number of MOF/polymer combinations for particular gas separation. The MOF permeability obtained from the atomically detailed simulations is used as an input in permeation theories such as the Maxwell model to predict the gas permeabilities in MMMs. On the other hand, full atomistic simulations consider MOF and polymer simultan...

show abstract

Upper bound of polymeric membranes for mixed-gas CO2/CH4 separations

Cited by 126 publications

References 61 publications

CO2/CH4 separation by means of Matrimid hollow fibre membranes

CO2/CH4 separation by means of Matrimid hollow fibre membranes

A highly selective PEGBEM-g-POEM comb copolymer membrane for CO2/N2 separation

A Review on Computational Modeling Tools for MOF-Based Mixed Matrix Membranes

Contact Info

Product

Resources

About