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dc.contributor.advisorKwon, Stephanie
dc.contributor.authorBian, Yingxue
dc.date.accessioned2022-11-22T22:46:01Z
dc.date.available2022-11-22T22:46:01Z
dc.date.issued2022
dc.identifierBian_mines_0052N_12477.pdf
dc.identifierT 9419
dc.identifier.urihttps://hdl.handle.net/11124/15522
dc.descriptionIncludes bibliographical references.
dc.description2022 Summer.
dc.description.abstractSelectivity, activity, and stability are the most crucial criteria for screening catalysts for catalytic reactions. Porous materials such as zeolites and metal-organic frameworks have been studied to understand the role of the microporous environment on reaction rates, and previous research has reported that the different sizes of microporous void environments enable selective uptake of molecules and modification of product selectivity, while the transition state leading to desired products was close to the void size. Therefore, we aim to explore a design strategy to create zeo-type catalysts with desired microstructures, and depending on the size of the microporous structure, these catalysts are able to control product selectivity for plenty of reactions. This work demonstrates a bottom-up synthesis method of tailoring the microporous SiO2 void environments around the active sites on TiO2 catalysts, which controls product selectivity for aldol condensation catalysis. We showed that microporous SiO2 layers can prevent unwanted parallel esterification reactions by destabilizing the relevant transition state that leads to esterification products and suppressing unwanted sequential reactions that form bulkier products by imposing steric barriers. This work provides a methodological framework for controlling product selectivity via a bottom-up design strategy, which can be applied to other catalytic applications in a broader area.
dc.format.mediumborn digital
dc.format.mediummasters theses
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.relation.ispartof2022 - Mines Theses & Dissertations
dc.rightsCopyright of the original work is retained by the author.
dc.titleCatalyst design strategy to logically control product selectivity by tailoring void environments around active sites
dc.typeText
dc.date.updated2022-11-05T04:10:41Z
dc.contributor.committeememberWu, Ning
dc.contributor.committeememberGómez-Gualdrón, Diego A.
thesis.degree.nameMaster of Science (M.S.)
thesis.degree.levelMasters
thesis.degree.disciplineChemical and Biological Engineering
thesis.degree.grantorColorado School of Mines


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