Title:
Transport and Phase-Transfer Catalysis in Gas-Expanded Liquids

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dc.contributor.advisor Eckert, Charles A.
dc.contributor.advisor Liotta, Charles L.
dc.contributor.author Maxey, Natalie Brimer en_US
dc.contributor.committeeMember Bayer, Charlene
dc.contributor.committeeMember Koros, William
dc.contributor.committeeMember Meredith, Carson
dc.contributor.department Chemical Engineering en_US
dc.date.accessioned 2006-06-09T17:39:45Z
dc.date.available 2006-06-09T17:39:45Z
dc.date.issued 2006-04-11 en_US
dc.description.abstract Gas-expanded liquids (GXL) are a new and benign class of liquid solvents that are intermediate in physical properties between normal liquids and supercritical fluids and therefore may offer advantages in separations, reactions, and advanced materials. Phase-transfer catalysis (PTC) is a powerful tool in chemistry that facilitates interaction and reaction between two or more species present in immiscible phases and offers the ability to eliminate the use of frequently expensive, environmentally undesirable, and difficult to remove polar, aprotic solvents. The work presented here seeks to further characterize the transport properties of GXLs and apply these new solvents to PTC systems, which could result in both greener chemistry and improved process economics. The transport properties of GXL are characterized by the measurement of diffusivities by the Taylor-Aris dispersion method and calculation of solvent viscosity based on those measurements. The measurement of these bulk properties is part of a larger effort to probe the effect of changes in the local structure surrounding a solute on the solution behavior. The two technologies of PTC and GXL are combined when the distribution of a phase-transfer catalyst between GXL and aqueous phases is measured and compared to changes in the kinetics of a reaction performed in the same system. The results show that increased reaction rates and more efficient catalyst recovery are possible with GXL solvents. en_US
dc.description.degree Ph.D. en_US
dc.format.extent 1366207 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/10411
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Tunable solvents en_US
dc.subject Diffusivities
dc.title Transport and Phase-Transfer Catalysis in Gas-Expanded Liquids en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Eckert, Charles A.
local.contributor.advisor Liotta, Charles L.
local.contributor.corporatename School of Chemical and Biomolecular Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication 4b9f2e38-c211-4513-bc14-84855881983c
relation.isAdvisorOfPublication 70381731-0633-4be9-8756-42fbf84ac767
relation.isOrgUnitOfPublication 6cfa2dc6-c5bf-4f6b-99a2-57105d8f7a6f
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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