ChBE Seminar Series -- Will Medlin

Event Details
Contact

Amy Schneider
School of Chemical & Biomolecular Engineering
(404) 385-2299
info@chbe.gatech.edu

Summaries

Summary Sentence: ChBE hosts a weekly seminar throughout the year with invited lecturers who are prominent in their fields.

Full Summary: No summary paragraph submitted.

In addition to its annual lectures, ChBE hosts a weekly seminar throughout the year with invited lecturers who are prominent in their fields. Unless otherwise noted, all seminars are held on Wednesdays in the Molecular Science and Engineering Building ("M" Building) in G011 (Cherry Logan Emerson Lecture Theater) at 4 p.m. Refreshments are served at 3:30 p.m. in the Emerson-Lewis Reception Salon.

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"Controlling Selectivity in Heterogeneous Catalysis With Organic Monolayers"

Will Medlin, Professor, Department of Chemical and Biological Engineering, University of Colorado

Abstract:
Performing selective reactions of compounds with multiple functional groups is a challenging objective, since each functional group can potentially adsorb and react on a catalytic surface. Addressing this problem is important both in conventional production of chemicals and for the conversion of biomass to chemicals and fuels.

Our group has investigated several techniques for aligning multifunctional molecules above metal surfaces to promote selective reaction of a particular functional group. One approach involves the modification of supported metal catalysts with organic ligands such as organothiols.

Organothiols can be deposited on metal surfaces to form organized self-assembled monolayers (SAMs) that may cause reactants to adopt particular orientations above the metal surface, altering selectivity. Several mechanisms by which SAMs can improve selectivity have been identified. For example, SAM coatings can be used to tune the reactivity of the underlying metal surface sites.

Furthermore, the organic function of SAM coatings can be tuned to control non-covalent interactions in the near-surface environment. The utility of these mechanisms for selectivity control will be illustrated for reaction chemistries important in biorefining and production of valuable chemicals. Some alternative directions for achieving surface and near-surface control will also be discussed.

Additional Information

In Campus Calendar
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Groups

School of Chemical and Biomolecular Engineering

Invited Audience
Public
Categories
Seminar/Lecture/Colloquium
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Status
  • Created By: Amy Schneider
  • Workflow Status: Published
  • Created On: Aug 11, 2014 - 2:40pm
  • Last Updated: Oct 7, 2016 - 10:08pm