{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/44382"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/44382","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Low temperature electrocatalytic reduction of carbon dioxide utilizing room temperature ionic liquids","abstract":"Artificial photosynthesis, where one uses electricity from the sun, or wind, to convert water and carbon dioxide into a hydrocarbon fuel could provide a viable route to renewable fuels but so far the results have been stymied because of the lack of a CO2 conversion catalyst that operates at low overpotentials. In this study we report a catalyst system that shows CO2 conversion at low overpotentials. The system uses two different catalysts to achieve the conversion. First an ionic liquid or ionic salt is used to catalyze the formation of a “(CO2)-” intermediate. Then a transition metal is used to catalyze the conversion of the “(CO2)-” intermediate into useful products. CO formation is first observed at -450mV with respect to a standard hydrogen electrode (SHE), compared to 800mV in the absence of the ionic liquid. Thus, CO2 conversion to CO can occur without the large energy loss associated with a high overpotential, raising the possibility of practical artificial photosynthesis. The reduction of CO2 in 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIM BF4) was studied in an H-type electrochemical cell, an in-situ SFG cell, in and in an EXAFS cell. This diagnostic data enabled the design of a continuous flow CO2 electrolysis cell. Results from these experiments suggest that the EMIM BF4 is able to catalyze the reaction in such a way that opens the door for the practical low potential and temperature conversion of CO2.","abstract_html":"Artificial photosynthesis, where one uses electricity from the sun, or wind, to convert water and carbon dioxide into a hydrocarbon fuel could provide a viable route to renewable fuels but so far the results have been stymied because of the lack of a CO2 conversion catalyst that operates at low overpotentials. In this study we report a catalyst system that shows CO2 conversion at low overpotentials. The system uses two different catalysts to achieve the conversion. First an ionic liquid or ionic salt is used to catalyze the formation of a “(CO2)-” intermediate. Then a transition metal is used to catalyze the conversion of the “(CO2)-” intermediate into useful products. CO formation is first observed at -450mV with respect to a standard hydrogen electrode (SHE), compared to 800mV in the absence of the ionic liquid. Thus, CO2 conversion to CO can occur without the large energy loss associated with a high overpotential, raising the possibility of practical artificial photosynthesis. The reduction of CO2 in 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIM BF4) was studied in an H-type electrochemical cell, an in-situ SFG cell, in and in an EXAFS cell. This diagnostic data enabled the design of a continuous flow CO2 electrolysis cell. Results from these experiments suggest that the EMIM BF4 is able to catalyze the reaction in such a way that opens the door for the practical low potential and temperature conversion of CO2.","abstract_has_math":false,"creators":["Rosen, Brian"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Chemical Engineering","degree_department":null,"school":null,"contributors":["Kenis, Paul J.A.","Masel, Richard I.","Harley, Brendan A.","Dlott, Dana D."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2013,"date_issued":"2013-05-24T22:09:46Z","date_published":"2013-05-24T22:09:46Z","updated_at":"2026-07-22T22:25:34Z","subjects":["Carbon Dioxide (CO2)","ionic liquid","overpotential","catalysis"],"languages":["en"],"rights":["Copyright 2013 Brian Rosen"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/44382","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Kenis, Paul J.A.","Masel, Richard I.","Harley, Brendan A.","Dlott, Dana D."]},{"key":"dc:creator","label":"Author","values":["Rosen, Brian"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2013-05-24T22:09:46Z","2013-05"]},{"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":["Carbon Dioxide (CO2)","ionic liquid","overpotential","catalysis"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2013 Brian Rosen"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/44382"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Artificial photosynthesis, where one uses electricity from the sun, or wind, to convert water and carbon dioxide into a hydrocarbon fuel could provide a viable route to renewable fuels but so far the results have been stymied because of the lack of a CO2 conversion catalyst that operates at low overpotentials. In this study we report a catalyst system that shows CO2 conversion at low overpotentials. The system uses two different catalysts to achieve the conversion. First an ionic liquid or ionic salt is used to catalyze the formation of a “(CO2)-” intermediate. Then a transition metal is used to catalyze the conversion of the “(CO2)-” intermediate into useful products. CO formation is first observed at -450mV with respect to a standard hydrogen electrode (SHE), compared to 800mV in the absence of the ionic liquid. Thus, CO2 conversion to CO can occur without the large energy loss associated with a high overpotential, raising the possibility of practical artificial photosynthesis. The reduction of CO2 in 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIM BF4) was studied in an H-type electrochemical cell, an in-situ SFG cell, in and in an EXAFS cell. This diagnostic data enabled the design of a continuous flow CO2 electrolysis cell. Results from these experiments suggest that the EMIM BF4 is able to catalyze the reaction in such a way that opens the door for the practical low potential and temperature conversion of CO2.","Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2013-04-15T16:36:37Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Rosen_Brian.pdf: 5213407 bytes, checksum: 6b129c8c7458024a78b3152f5bb9e3f9 (MD5)","Made available in DSpace on 2013-05-24T22:09:46Z (GMT). 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The system uses two different catalysts to achieve the conversion. First an ionic liquid or ionic salt is used to catalyze the formation of a “(CO2)-” intermediate. Then a transition metal is used to catalyze the conversion of the “(CO2)-” intermediate into useful products. CO formation is first observed at -450mV with respect to a standard hydrogen electrode (SHE), compared to 800mV in the absence of the ionic liquid. Thus, CO2 conversion to CO can occur without the large energy loss associated with a high overpotential, raising the possibility of practical artificial photosynthesis. The reduction of CO2 in 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIM BF4) was studied in an H-type electrochemical cell, an in-situ SFG cell, in and in an EXAFS cell. This diagnostic data enabled the design of a continuous flow CO2 electrolysis cell. Results from these experiments suggest that the EMIM BF4 is able to catalyze the reaction in such a way that opens the door for the practical low potential and temperature conversion of CO2.","Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2013-04-15T16:36:37Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Rosen_Brian.pdf: 5213407 bytes, checksum: 6b129c8c7458024a78b3152f5bb9e3f9 (MD5)","Made available in DSpace on 2013-05-24T22:09:46Z (GMT). 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