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INTRINSIC PHOTOCATALYTIC ACTIVITY OF TIO2 IN GAS PHASE CO2 REDUCTION: LIGHT COUPLING, MASS TRANSFER, AND MICROKINETICS MODELS.

dc.contributor.authorVignolo Gonzalez, Hugo Alejandro
dc.contributor.chairHanrath, Tobias
dc.contributor.committeeMemberEscobedo, Fernando
dc.contributor.committeeMemberAnton, Alan Brad
dc.date.accessioned2018-04-26T14:16:05Z
dc.date.available2018-04-26T14:16:05Z
dc.date.issued2017-08-30
dc.description.abstractApplications of photocatalytic CO2 reduction are limited by poor overall efficiency and slow reaction rates. In addition to such intrinsic material’s limitations, external influences decrease observed reaction rates still further. This work aims to quantify those external factors in a batch photocatalytic gas-phase reactor for CO2 reduction on P25 (TiO2), approaching to the intrinsic activity of the material under standard conditions. The proposed methodology addressed optical aspects of the reactor design to decouple the influence of light in observed reaction rates; as a thin film with an optical effectiveness of 67%, P25 showed a yield of 14.5 [μmoles-C-products g-1 h-1], which is at least 20 times higher compared to previous references. A transport model demonstrated the small influence of diffusion based on a dimensional analysis and perturbation expansion. As a final remark, reaction mechanisms were analyzed using Microkinetics Analysis (MKA), whose qualitative predictions explained reaction trends not captured by coarse-grain models.
dc.identifier.doihttps://doi.org/10.7298/X4SN074N
dc.identifier.otherVignoloGonzalez_cornell_0058O_10129
dc.identifier.otherhttp://dissertations.umi.com/cornell:10129
dc.identifier.otherbibid: 10361450
dc.identifier.urihttps://hdl.handle.net/1813/56773
dc.language.isoen_US
dc.subjectChemical engineering
dc.subjectEnergy
dc.subjectCO2 reduction
dc.subjectMicrokinetics
dc.subjectPhotocatalysis
dc.subjectReactor design
dc.subjectSolar Fuels
dc.subjectTransport Phenomena
dc.subjectsustainability
dc.titleINTRINSIC PHOTOCATALYTIC ACTIVITY OF TIO2 IN GAS PHASE CO2 REDUCTION: LIGHT COUPLING, MASS TRANSFER, AND MICROKINETICS MODELS.
dc.typedissertation or thesis
dcterms.licensehttps://hdl.handle.net/1813/59810
thesis.degree.disciplineChemical Engineering
thesis.degree.grantorCornell University
thesis.degree.levelMaster of Science
thesis.degree.nameM.S., Chemical Engineering

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