{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/22168"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/22168","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Nuclear magnetic resonance studies of highly compressed fluids","abstract":"Nuclear magnetic resonance (NMR) has been used to investigate the translational and rotational motions of molecules in supercritical fluid and model lubricant systems. NMR has also been used to study molecular conformations and cross relaxation in the model lubricant 2-ethylhexyl benzoate. In each of the studies, the ability to use pressure as an experimental variable proved valuable to the successful completion of the experiment. In the supercritical fluid study, high-pressure techniques were necessary in order to achieve the supercritical state. The high-pressure capability also allowed transport and relaxation in the model lubricants to be studied over viscosity ranges of nearly five orders of magnitude. Finally, conformational information and proton-proton cross relaxation rates in 2-ethylhexyl benzoate were obtained by the NOESY method, which works well when the rate of molecular motion is very slow. Applying pressure to the model lubricant slowed down the molecular motion to the point where the NOESY experiment could be performed.","abstract_html":"Nuclear magnetic resonance (NMR) has been used to investigate the translational and rotational motions of molecules in supercritical fluid and model lubricant systems. NMR has also been used to study molecular conformations and cross relaxation in the model lubricant 2-ethylhexyl benzoate. In each of the studies, the ability to use pressure as an experimental variable proved valuable to the successful completion of the experiment. In the supercritical fluid study, high-pressure techniques were necessary in order to achieve the supercritical state. The high-pressure capability also allowed transport and relaxation in the model lubricants to be studied over viscosity ranges of nearly five orders of magnitude. Finally, conformational information and proton-proton cross relaxation rates in 2-ethylhexyl benzoate were obtained by the NOESY method, which works well when the rate of molecular motion is very slow. Applying pressure to the model lubricant slowed down the molecular motion to the point where the NOESY experiment could be performed.","abstract_has_math":false,"creators":["Adamy, Steven Taylor"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":["Jonas, Jiri"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T13:31:11Z","date_published":"2011-05-07T13:31:11Z","updated_at":"2026-07-22T22:25:19Z","subjects":["Chemistry, Physical"],"languages":["eng"],"rights":["Copyright 1991 Adamy, Steven Taylor"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9136524","(UMI)AAI9136524"],"render_values":[{"text":"AAI9136524","href":null,"code":true},{"text":"(UMI)AAI9136524","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/22168","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Jonas, Jiri"]},{"key":"dc:creator","label":"Author","values":["Adamy, Steven Taylor"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T13:31:11Z","10000-01-01","1991"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Chemistry, Physical"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1991 Adamy, Steven Taylor"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9136524","(UMI)AAI9136524","http://hdl.handle.net/2142/22168"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Nuclear magnetic resonance (NMR) has been used to investigate the translational and rotational motions of molecules in supercritical fluid and model lubricant systems. NMR has also been used to study molecular conformations and cross relaxation in the model lubricant 2-ethylhexyl benzoate. In each of the studies, the ability to use pressure as an experimental variable proved valuable to the successful completion of the experiment. In the supercritical fluid study, high-pressure techniques were necessary in order to achieve the supercritical state. The high-pressure capability also allowed transport and relaxation in the model lubricants to be studied over viscosity ranges of nearly five orders of magnitude. Finally, conformational information and proton-proton cross relaxation rates in 2-ethylhexyl benzoate were obtained by the NOESY method, which works well when the rate of molecular motion is very slow. Applying pressure to the model lubricant slowed down the molecular motion to the point where the NOESY experiment could be performed.","Made available in DSpace on 2011-05-07T13:31:11Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9136524.pdf: 3933951 bytes, checksum: bf91ef1c295b245178250cea82bd5492 (MD5) Previous issue date: 1991","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:55:47Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:26:02-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"]},{"key":"dc:title","label":"Title","values":["Nuclear magnetic resonance studies of highly compressed fluids"]}]}],"canonical_facts":{"dc:contributor":["Jonas, Jiri"],"dc:creator":["Adamy, Steven Taylor"],"dc:date":["2011-05-07T13:31:11Z","10000-01-01","1991"],"dc:description":["Nuclear magnetic resonance (NMR) has been used to investigate the translational and rotational motions of molecules in supercritical fluid and model lubricant systems. NMR has also been used to study molecular conformations and cross relaxation in the model lubricant 2-ethylhexyl benzoate. In each of the studies, the ability to use pressure as an experimental variable proved valuable to the successful completion of the experiment. In the supercritical fluid study, high-pressure techniques were necessary in order to achieve the supercritical state. The high-pressure capability also allowed transport and relaxation in the model lubricants to be studied over viscosity ranges of nearly five orders of magnitude. Finally, conformational information and proton-proton cross relaxation rates in 2-ethylhexyl benzoate were obtained by the NOESY method, which works well when the rate of molecular motion is very slow. Applying pressure to the model lubricant slowed down the molecular motion to the point where the NOESY experiment could be performed.","Made available in DSpace on 2011-05-07T13:31:11Z (GMT). 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