{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/69770"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/69770","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Measurement and Prediction of Limiting Activity Coefficients","abstract":"Activity coefficients at infinite dilution ((gamma)('(INFIN))'s) were determined for several classes of solutes in the polar solvents 1-octanol, acetophenone, and furfural at 20, 40, and 60(DEGREES)C by a gas chromatographic technique. An improved form of the Modified Separation of Cohesive Energy Density model was developed to predict (gamma)('(INFIN))'s using pure component and temperature independent parameters. For about 3000 protic and aprotic, but nonaqueous and nonionic (gamma)('(INFIN))'s over wide temperature ranges, an average deviation of 11% was achieved with few unsatisfactory predictions. Overall, the temperature dependence of the (gamma)('(INFIN))'s was characterized adequately by the use of universal temperature coefficients and a group energy parameter. The model, with its strengths of simplicity in formulation and application, and physically intuitive parameters, represents an excellent engineering tool to predict the solution behavior at infinite dilution.","abstract_html":"Activity coefficients at infinite dilution ((gamma)('(INFIN))'s) were determined for several classes of solutes in the polar solvents 1-octanol, acetophenone, and furfural at 20, 40, and 60(DEGREES)C by a gas chromatographic technique. An improved form of the Modified Separation of Cohesive Energy Density model was developed to predict (gamma)('(INFIN))'s using pure component and temperature independent parameters. For about 3000 protic and aprotic, but nonaqueous and nonionic (gamma)('(INFIN))'s over wide temperature ranges, an average deviation of 11% was achieved with few unsatisfactory predictions. Overall, the temperature dependence of the (gamma)('(INFIN))'s was characterized adequately by the use of universal temperature coefficients and a group energy parameter. The model, with its strengths of simplicity in formulation and application, and physically intuitive parameters, represents an excellent engineering tool to predict the solution behavior at infinite dilution.","abstract_has_math":false,"creators":["Chen, Wen-Teh"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Chemical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-12-15T19:54:31Z","date_published":"2014-12-15T19:54:31Z","updated_at":"2026-07-22T22:26:01Z","subjects":["Engineering, Chemical"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8701455"],"render_values":[{"text":"(UMI)AAI8701455","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/69770","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Chen, Wen-Teh"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-15T19:54:31Z","10000-01-01","1986"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemical Engineering"]},{"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":["Engineering, Chemical"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/69770","(UMI)AAI8701455"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Activity coefficients at infinite dilution ((gamma)('(INFIN))'s) were determined for several classes of solutes in the polar solvents 1-octanol, acetophenone, and furfural at 20, 40, and 60(DEGREES)C by a gas chromatographic technique. An improved form of the Modified Separation of Cohesive Energy Density model was developed to predict (gamma)('(INFIN))'s using pure component and temperature independent parameters. For about 3000 protic and aprotic, but nonaqueous and nonionic (gamma)('(INFIN))'s over wide temperature ranges, an average deviation of 11% was achieved with few unsatisfactory predictions. Overall, the temperature dependence of the (gamma)('(INFIN))'s was characterized adequately by the use of universal temperature coefficients and a group energy parameter. The model, with its strengths of simplicity in formulation and application, and physically intuitive parameters, represents an excellent engineering tool to predict the solution behavior at infinite dilution.","Made available in DSpace on 2014-12-15T19:54:31Z (GMT). No. of bitstreams: 1 8701455.pdf: 10240007 bytes, checksum: 40a81d4fbc1ede0ddd0e3224a94edf6b (MD5) Previous issue date: 1986","Embargo set by: Seth Robbins for item 69936 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","239 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1986."]},{"key":"dc:title","label":"Title","values":["Measurement and Prediction of Limiting Activity Coefficients"]}]}],"canonical_facts":{"dc:creator":["Chen, Wen-Teh"],"dc:date":["2014-12-15T19:54:31Z","10000-01-01","1986"],"dc:description":["Activity coefficients at infinite dilution ((gamma)('(INFIN))'s) were determined for several classes of solutes in the polar solvents 1-octanol, acetophenone, and furfural at 20, 40, and 60(DEGREES)C by a gas chromatographic technique. An improved form of the Modified Separation of Cohesive Energy Density model was developed to predict (gamma)('(INFIN))'s using pure component and temperature independent parameters. For about 3000 protic and aprotic, but nonaqueous and nonionic (gamma)('(INFIN))'s over wide temperature ranges, an average deviation of 11% was achieved with few unsatisfactory predictions. Overall, the temperature dependence of the (gamma)('(INFIN))'s was characterized adequately by the use of universal temperature coefficients and a group energy parameter. The model, with its strengths of simplicity in formulation and application, and physically intuitive parameters, represents an excellent engineering tool to predict the solution behavior at infinite dilution.","Made available in DSpace on 2014-12-15T19:54:31Z (GMT). No. of bitstreams: 1 8701455.pdf: 10240007 bytes, checksum: 40a81d4fbc1ede0ddd0e3224a94edf6b (MD5) Previous issue date: 1986","Embargo set by: Seth Robbins for item 69936 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","239 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1986."],"dc:identifier":["http://hdl.handle.net/2142/69770","(UMI)AAI8701455"],"dc:subject":["Engineering, Chemical"],"dc:title":["Measurement and Prediction of Limiting Activity Coefficients"],"dc:type":["text"],"thesis:degree_discipline":["Chemical Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:01Z"}