Developments in Membrane Research: from Material via Process Design to Industrial Application

Abetz, Volker; Brinkmann, Torsten; Dijkstra, Marga; Ebert, K.; Fritsch, Detlev; Ohlrogge, K.; Paul, D.; Peinemann, Klaus‐Viktor; Nunes, Suzana Pereira; Scharnagl, Nico; Schossig, Michael

doi:10.1002/adem.200600032

Cited by 227 publications

(132 citation statements)

References 185 publications

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“…The significantly enhanced gas selectivity along with high permeability push the overall gas transport properties to surpass the upper bound that has been limiting the polymer membranes for decades. To the best of our knowledge, the overall separation performance of TOX-PIM-1 membranes is higher than all existing soluble polymers including commercial polymers 40 , soluble PIMs 41 and compares very well against TR polymers 18,31,34,[42][43][44] .…”

Section: Characterization Of Membranesmentioning

confidence: 79%

Controlled thermal oxidative crosslinking of polymers of intrinsic microporosity towards tunable molecular sieve membranes

et al. 2014

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Organic open frameworks with well-defined micropore (pore dimensions below 2 nm) structure are attractive next-generation materials for gas sorption, storage, catalysis and molecular level separations. Polymers of intrinsic microporosity (PIMs) represent a paradigm shift in conceptualizing molecular sieves from conventional ordered frameworks to disordered frameworks with heterogeneous distributions of microporosity. PIMs contain interconnected regions of micropores with high gas permeability but with a level of heterogeneity that compromises their molecular selectivity. Here we report controllable thermal oxidative crosslinking of PIMs by heat treatment in the presence of trace amounts of oxygen. The resulting covalently crosslinked networks are thermally and chemically stable, mechanically flexible and have remarkable selectivity at permeability that is three orders of magnitude higher than commercial polymeric membranes. This study demonstrates that controlled thermochemical reactions can delicately tune the topological structure of channels and pores within microporous polymers and their molecular sieving properties.

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Section: Characterization Of Membranesmentioning

confidence: 79%

Controlled thermal oxidative crosslinking of polymers of intrinsic microporosity towards tunable molecular sieve membranes

et al. 2014

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“…The most common hydrogen separation membranes are still made from commercially available polymers, such as cellulose acetate (CA), polysulfone (PSF), polyethersulfone (PES), polyimide (PI), polyetherimide (PEI), etc. [32,41]. Table 2 summarizes the permeation performance of hydrogen and carbon dioxide through several membranes fabricated from conventional polymeric materials [36].…”

Section: The Performance Of the Polymeric Membrane For Hydrogen Separmentioning

confidence: 99%

A Review on the Production and Purification of Biomass-Derived Hydrogen Using Emerging Membrane Technologies

Yin

Yip

2017

Catalysts

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Abstract:Hydrogen energy systems are recognized as a promising solution for the energy shortage and environmental pollution crises. To meet the increasing demand for hydrogen, various possible systems have been investigated for the production of hydrogen by efficient and economical processes. Because of its advantages of being renewable and environmentally friendly, biomass processing has the potential to become the major hydrogen production route in the future. Membrane technology provides an efficient and cost-effective solution for hydrogen separation and greenhouse gas capture in biomass processing. In this review, the future prospects of using gas separation membranes for hydrogen production in biomass processing are extensively addressed from two perspectives: (1) the current development status of hydrogen separation membranes made of different materials and (2) the feasibility of using these membranes for practical applications in biomass-derived hydrogen production. Different types of hydrogen separation membranes, including polymeric membranes, dense metal membranes, microporous membranes (zeolite, metal-organic frameworks (MOFs), silica, etc.) are systematically discussed in terms of their fabrication methods, gas permeation performance, structure stability properties, etc. In addition, the application feasibility of these membranes in biomass processing is assessed from both practical and economic perspectives. The benefits and possibilities of using membrane reactors for hydrogen production in biomass processing are also discussed. Lastly, we summarize the limitations of the currently available hydrogen membranes as well as the gaps between research achievements and industrial application. We also propose expected research directions for the future development of hydrogen gas membrane technology.

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“…In so called covalent organic frameworks (COFs), pores are introduced by backbone adaption or fundamental porous shape of the monomer itself. [4,[98][99][100] No real pore template is used, as the only pore forming compound remains within the final structure. In other words, the entire material is a solid polymer film (see Figure 10).…”

Section: Covalent Organic Framework (Cof's)mentioning

confidence: 99%

Porous Polymer Membranes by Hard Templating – A Review

2017

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Membranes are designed to bridge a precise separation process at the nanoscale with industrial applications running at cubic meters per hour. This review outlines materials applied in membrane production with a particular focus on polymers. Membrane performance and created value are directly linked to controlled pore formation. Their economic relevance has created a number of large companies and associated academic research at top institutions. The authors review, therefore, starts from well-established techniques applied in products and then moves on to evolving concepts from academia. Pore formation through hard templating is a versatile field for separation processes. A more detailed view is given on the two known concepts for nanopore formation, namely colloidal templates and random hard salt templating. A comparison between these two concepts underlines their relevance to combine a process specific separation with large scale manufacturing requirements (i.e., upscale possibility, flexible process control and environmental impact).

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Developments in Membrane Research: from Material via Process Design to Industrial Application

Cited by 227 publications

References 185 publications

Controlled thermal oxidative crosslinking of polymers of intrinsic microporosity towards tunable molecular sieve membranes

Controlled thermal oxidative crosslinking of polymers of intrinsic microporosity towards tunable molecular sieve membranes

A Review on the Production and Purification of Biomass-Derived Hydrogen Using Emerging Membrane Technologies

Porous Polymer Membranes by Hard Templating – A Review

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