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Showing 1 to 20 of 27 for “"Separation properties"”.
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Decomposition spaces and separation properties
… by a decomposition space of certain topological properties. Some new topological concepts which are introduced are of independent interest but they are explored here principally for their implications in decomposition spaces.</p> <p>In Chapter II we compare McAuley's definition of an upper …
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The gas chromatographic separation properties of azulene and the synthesis and characterization of bulky bis-pyrazolylpyridine metal-ligand complexes.
The separation of complex mixtures of molecules is vital to the conduct and understanding of modern chemical research. In this work, new materials for gas chromatographic separations are developed, evaluated, and discussed. Also discussed are the synthesis and characterization of bulky tridentate …
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Sorption, Transport and Gas Separation Properties of Zn-Based Metal Organic Frameworks (MOFs) and their Application in CO₂ Capture
Adsorption, separation and conversion of CO₂ from industrial processes are among the priorities of the scientific community aimed at mitigating the effects of greenhouse gases on the environment. One of the main focuses is the capture of CO₂ at stationary point sources from fossil fuel emissions …
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Optimizing the structure and plasticization resistance of asymmetric polyimide hollow fiber membranes for CO2 removal from natural gas
… and economical approach for many industrial gas separation applications, including natural gas purification. Matrimid 5218® has been used as a benchmark polymer, due to its combination of high selectivity and acceptable permeance, as well as its excellent mechanical properties and commercial …
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Synthesis and Characterization of High Performance Polymers for Gas Separation Membranes
… polybenzoxazoles and polybenzimidazoles for gas separation applications. An abundance of monomers and novel polymers were synthesized and fabricated into membranes. Thermally rearranged polybenzoxazoles and their precursor polyimides were systematically studied with regard to size of pendant …
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Mixed Gas Transport Study Through Polymeric Membranes: A Novel Technique
The gas transport and separation properties of polymers have been successfully exploited in commercial ventures. Industrial applications employing membrane processes range from production of pure gases to barrier coatings for protection against environmental elements. Membrane separations are …
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Löslichkeitsselektive Mixed Matrix Membranen zur Gaspermeation
… carbon are investigated for transport and separation properties of n-butane and methane. For mathematical description of the permeation process a new model is developed based on one-dimensional discretisation of the separation layer. This is an innovative approach for modelling of mixed …
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The isolation and study of rheological and mass transfer parameters in the spinning of advanced hollow fibre membranes for gas separation
… dry gap in dry/wet spinning of hollow fibre gas separation membranes. To achieve this, studies were undertaken in which extrusion shear and forced convection residence time were, for the first time de-coupled and studied in isolation. Much of the previous work in the literature has concentrated …
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Development of and gas permeation study of homo and copolymers from the family of polyphenylene oxides
Membrane gas separation emerged as a commercial process on a large scale during the 1980s. When compared to other gas separation processes such as cryogenics, adsorption and absorption, membrane separation competes primarily on the basis of overall economics and convenience, but not on the basis of …
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β2-mikroglobulino gryninimas ir skysčio-skysčio fazių atsiskyrimo tyrimai /
… growing area of research is liquid-liquid phase separation (LLPS), the process by which proteins and other biomolecules separate from the bulk solution to form dense, membraneless condensates. Although dozens of proteins have been identified to form condensates, there is currently no information …
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Gas permeation properties and characterization of mitrimid based carbon tubular membrane
Carbon membranes offer high potential in gas separation industry due to its highly selective. Therefore, this study aims to investigate the effect of carbonization parameter such as polymer composition, carbonization temperature, and carbonization environment on the gas separation properties. …
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Synthesis and Characterization of Toughened Thermally Rearranged Polymers, Poly(2,6-Dimethylphenylene-oxide) Based Copolymers and Polymer Blends for Gas Separation Membranes
… rearranged (TR) polymers have outstanding gas separation properties, but are limited in their industrial application due to being mechanically brittle. A series of low volume fraction of a poly(arylene ether sulfone) (PAES) block was introduced into the TR precursor polyhydroxyimide (PI) chain …
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ORMOCER (inorganic-organic hybrid polymer)-zeolite Nanocomposites: Advanced Membrane Materials for Gas Separation
… with the superior transport and ion exchange properties of molecular sieves. The versatility of ORMOCER® materials is a decisive factor in achieving the desired separation properties of a novel mixed matrix membrane material. The glycerine-1,3-dimethacrylateurethanetriethoxysilane (GUS)-based …
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Microporous Polymer-Metal Organic Framework (MOF) Hybrid Materials for Separations
Membrane-based separation holds significant promise for reducing the high energy consumption associated with traditional thermal-based separation processes in the chemical industry. Recent advancements in microporous materials, such as polymers of intrinsic microporosity (PIMs) and metal-organic …
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Lysosomes and Ribonucleoprotein Dynamics in Neurons
… a tether between RNA granules (N-terminal phase separation) and the lysosomal surface (C-terminal phospholipid binding). We find that ANXA11 enables RNA granule hitchhiking on motile lysosomes, promoting the long-distance transport of RNA within neuronal processes. Critically, disease-linked …
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Gas Separation Using Nanoporous Single-Layer Graphene Membranes
… as a highly promising membrane material for gas separation due to its atomic thickness. When single-layer graphene contains a high density of gas sieving nanoscale pores, it can exhibit both a high gas permeance and a high selectivity, which is beneficial for reducing the cost of gas separation …
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Maximum Entropy Optimization: a General Approach to Study Ordered and Disordered Proteins Reveals Key Features of Protein Phase Separation
Liquid-liquid phase separation drives the formation of biological condensates that play essential roles in transcriptional regulation and signal sensing. The molecular factors that dictate these condensates' stability and spatial organization are not fully understood, and it remains challenging to …
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Poly (2,6-dimethyl-1,4-phenylene oxide) hollow fibres for gas separation.
Hollow fibres used for gas separation applications need to have good mechanical strength and excellent gas separation properties. The production of hollow fibres by the dry-wet spinning process involves many variables, each having the potential to affect these properties. This is a systematic study …
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Polyaminocarboxylic Acids as Potential Candidates for Trivalent Actinide/lanthanide Separations
… technique that employs a series of analytical separations in an effort to remove radioactive contaminants from spent nuclear fuel (SNF) and recover uranium in high purity. This separation utilizes a polyaminocarboxylic acid and a phosphorous extractant to separate trivalent actinides (An(III)s) …
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ABC terpolymers : micelles, polymersomes and stabilisation of water in water emulsions
… and encapsulation based on coupling the separation properties of aqueous two phase systems (ATPSs), which are able to provide w/w emulsions, with templated self-assembly of polymersomes. This novel method provides high encapsulation efficiencies of payload species which is effective, …
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