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SUMMARY:Prof. Christina W. Li : Bimetallic Alloy Nanoparticles for Stereos
 elective Heterogeneous Hydrogenation
DTSTART:20260312T111500
DTEND:20260312T121500
DTSTAMP:20261004T170851Z
UID:964964f87f90d77b2401bb651152cb21ff59e6df84833739ceeb3677
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Christina W. Li\nDepartment of Chemistry\,\nPurdue Unive
 rsity\, West Lafayette\, IN\nAbstract : Bimetallic alloy nanoparticles ar
 e important catalysts for selective heterogeneous hydrogenation reactions.
  Our group recently showed that a well-defined bimetallic surface is capab
 le of stereoselective hydrogenation of olefins through a directing group s
 trategy. Taking inspiration from molecular catalysts for directed hydrogen
 ation\, we utilize a bimetallic alloy comprising a noble metal and a base 
 metal where the base metal adsorbs a heteroatom directing group on the sub
 strate and drives facially-selective hydrogen addition. We show that heter
 oatom-directed heterogeneous hydrogenation is highly diastereoselective fo
 r a wide range of substrate classes\, including hindered olefins and arene
 s that are unreactive in the presence of molecular hydrogenation catalysts
  and unselective in the presence of monometallic noble metal catalysts. We
  also utilize colloidal synthesis\, CO DRIFTS\, and catalytic kinetics to 
 elucidate the active site ensemble required for heterogeneous directed hyd
 rogenation.\n\nBio : Christina Li received an A.B. in chemical and physic
 al biology from Harvard University in 2009\, working with Professor David 
 Evans. She completed her Ph.D. in chemistry at Stanford University\, worki
 ng with Professor Matthew Kanan on nanostructured Cu electrodes for CO2 re
 duction. She then did postdoctoral work at UC Berkeley with Professor Paul
  Alivisatos on colloidal semiconductor nanocrystals. She began her indepen
 dent career in the chemistry department at Purdue University in 2016 where
  her group focuses on colloidal synthetic strategies to tune the electroni
 c properties and ensemble geometry of nanoparticle active sites for electr
 ochemical\, thermal\, and organic catalytic reactions. She was promoted to
  associate professor in 2023. She has received a National Science Foundati
 on CAREER Award\, a National Institutes of Health Maximizing Investigators
 ’ Research Award (MIRA)\, and the 2024 ACS Catalysis Lectureship.
LOCATION:Tseuzier https://plan.epfl.ch/?room==I17%204%20K2 https://epfl.zo
 om.us/j/65378030944
STATUS:CONFIRMED
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