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Effects of polymerization conditions and imidization methods on performance of crosslinkable polymer membrane for CO₂/CH₄ separation
(Georgia Institute of Technology, 2013-04-30)
Natural gas feeds often contain contaminants such as CO₂, H₂S, H₂O, and small hydrocarbons. Carbon dioxide is a major contaminant reducing the heating value of the gas and causing pipeline corrosion, so CO₂ level should ...
Analysis of factors influencing the performance of CMS membranes for gas separation
(Georgia Institute of Technology, 2006-05-10)
Carbon molecular sieve (CMS) membranes represent the most attractive pure component materials to compete against polymer membranes for high performance gas separations. CMS membranes are formed from the thermal decomposition ...
Formation and characterization of hybrid membranes utilizing high-performance polyimides and carbon molecular sieves
(Georgia Institute of Technology, 2007-05-18)
Current membrane technology, based on polymeric materials, is subject to a limiting tradeoff between productivity (permeability) and efficiency (selectivity). Other materials with better gas separation performance exist, ...
Thickness dependent physical aging and supercritical carbon dioxide conditioning effects on crosslinkable polyimide membranes for natural gas purification
(Georgia Institute of Technology, 2008-06-30)
Membrane separations are rapidly growing alternatives to traditionally expensive gas separation processes. For natural gas purification, membranes are used to remove carbon dioxide to prevent pipeline corrosion and increase ...
Engineering the performance of mixed matrix membranes for gas separations
(Georgia Institute of Technology, 2007-09-20)
Mixed matrix membranes that comprise domains of organic and inorganic components are investigated in this research. Such materials effectively circumvent the polymeric 'upper bound trade-off curve' and show properties ...
Crosslinked polyimide hollow fiber membranes for aggressive natural gas feed streams
(Georgia Institute of Technology, 2008-12-01)
Natural gas is one of the fastest growing primary energy sources in the world today. The increasing world demand for energy requires increased production of high quality natural gas. For the natural gas to be fed into ...
Engineering nanoporous materials for application in gas separation membranes
(Georgia Institute of Technology, 2010-08-11)
The main theme of this dissertation is to engineer nanoporous materials and nanostructured surfaces for applications in gas separation membranes. Tunable methods have been developed to create inorganic hydroxide nanostructures ...
Accelerating development of metal organic framework membranes using atomically detailed simulations
(Georgia Institute of Technology, 2009-10-15)
A new group of nanoporous materials, metal organic frameworks (MOFs), have emerged as a fascinating alternative to more traditional nanoporous materials for membrane based gas separations. Although hundreds of different ...
Interface engineering in zeolite-polymer and metal-polymer hybrid materials
(Georgia Institute of Technology, 2010-07-14)
Inorganic-polymer hybrid materials have a high potential to enable major advances in material performance in a wide range of applications. This research focuses on characterizing and tailoring the physics and chemistry ...
Composite membranes for high temperature gas separations
(Georgia Institute of Technology, 1998-05)