Krishna, R.; Li, S.; van
Baten, J.M.; Falconer, J.L. and Noble, R.D., “Investigation
of Slowing Down and Speeding Up Effects in Binary Mixture Permeation Across
SAPO-34 and MFI Membranes”,
Separation and Purification
Technology, 60, 230-236 (2008).
Gin, D.L.; Bara, J.E.; Noble, R.D. and
Elliott, B.J., “Polymerized Lyotropic
Liquid Crystal Assemblies for Membrane Applications”,
Macromolecular Rapid Communications, 29 (5), 361-448 (2008).
Yu, M.; Li, S.; Falconer, J.L. and
Noble, R.D., “Reversible H2
Storage using a SAPO-34 Zeolite
Layer”,
Microporous and Mesoporous Materials,
110, 579-582
(2008).
Finotello, A.; Bara, J.E.; Camper, D. and Noble, R.D., “Room
Temperature Ionic Liquids: Temperature Dependence of Gas Solubility
Selectivity”, Industrial and Engineering Chemistry Research, 47(10),
3453-3459 (2008).
Yu, M.; Wyss, J.C.; Noble, R.D. and Falconer, J.L., “2,2-Dimethylbutane Adsorption and Diffusion in MFI Zeolite”,
Microporous and Mesoporous Materials, 111,
24-31 (2008).
Li, S.; Falconer, J.L. and Noble, R.D., "SAPO-34
Membranes for CO2/CH4 Separations: Effect of Si/Al Ratio",
Microporous and Mesoporous Materials,
110, 310-317 (2008).
Carreon, M.; Li, S.; Falconer, J.L. and
Noble, R.D., “SAPO-34 Seeds and Membranes
Prepared Using Multiple Templates”
Advanced Materials, 20, 729-732 (2008).
Hong, M.; Li, S.; Falconer, J.L. and
Noble, R.D.; “Hydrogen Purification using
a SAPO-34 Membrane”, Journal of Membrane
Science, 307, 277-283 (2008).
Bara, J. E.; Hatakeyama, E. S.;
Gabriel, C. J.; Lessmann, S.; Gin, D. L.; Noble, R. D. “Synthesis and
Gas Separation Performance of Cross-linked Gemini Room Temperature Ionic
Liquid Polymer Membranes”, Journal of Membrane Science, 316, 186-191
(2008).
Bara, J. E.; Gabriel, C. J.; Hatakeyama, E. S.; Carlisle, T.
K.; Lessmann, S.; Noble, R. D.; Gin, D. L., “Improving CO2 Selectivity
in Polymerized Room-Temperature Ionic Liquid Gas Separation Membranes
through Incorporation of Polar Substituents”, Journal of Membrane
Science, 321, 3-7 (2008).
Lee, J.B.; Funke, H.; Noble, R.D. and Falconer, J.L., “High
Selectivities in Defective MFI Membranes”, Journal of Membrane Science,
321, 309-315 (2008).
Yu, M.; Falconer, J.L. and Noble, R.D., “Characterizing
Nonzeolite Pores in MFI Membranes”, Industrial and Engineering
Chemistry Research, 47(11) 3943-3948 (2008).
Ionic Liquids
(click here for descriptive slide) We are studying the use of ionic liquids for gas separations. We plan to evaluate various ionic liquids and complexation chemistry so that we can tailor the material properties to the feed mixture being separated. Various configurations, including composite polymer/IL structures, as well as the incorporation of complexation chemistry and zeolites, are being studied. (click here for descriptive slide) We have also developed an apparatus to measure both solubility and diffusivity of gases in ionic liquids. This work is being done in collaboration with Professor
Doug Gin in the Chemistry Department.
Recent Patents and Publications
Zeolite Membranes
(click here for descriptive slide) Professor John Falconer and I have a research group that synthesizes several different zeolite membranes on the interior of microporous alumina and stainless steel tubes. We use various characterization methods including a transient technique that we developed, to obtain qualitative and quantitative structural and property information. Gas, vapor, and pervaporation permeation studies are also being conducted to evaluate the performance of the membranes for various applications. We have obtained highly selective separations for carbon dioxide/methane, organic isomer vapor and organic/water liquid phase feed selections. Highly selective hydrogen separation for fuel cell applications is also being studied. In a related study, we are developing the transient permeation technique to obtain property information for polymer membranes used in pervaporation.
Recent Patents and Publications
Use of External Fields for Selective Separations: The basic purpose of research in this area is to study the use of electric or light energy to aid in the selective separation process. The energy is normally used to change the binding affinity of the complexing agent but also can be used to drive the process. This research is a collaboration with Professor Carl Koval in the Chemistry Department. Currently, we have developed an electrochemical pump with no moving parts that can produce a pressure in excess of 20 atm. This system has applications for lab-on-a-chip, microspectroscopy, and other micro-scale devices. (click here for descriptive slide)
Recent Patents and Publications
Liquid Crystals: Liquid crystals can be organized to form films with a nanostructured polymer network. (click here for descriptive slide) These structures can be cross-linked to produce stable films that can be used as membranes. These membranes are being evaluated for nanofiltration applications. We are also preparing film for use in the electrochemical pump as well as composite structures with ionic liquids. This research is a collaboration with Professor Doug Gin.
