Chemistry in the TEM – New Horizons for Catalyst Research



Join catalyst expert Dr. George W. Graham and Shuyi Zhang of the University of Michigan when they present their research conducted with Atmosphere, Protochips’ environmental gas cell in a Materials Today webinar on August 18.

Dr. Graham has been active in the study of catalyst materials for over 30 years, and spent more than 20 years in the Scientific Research Laboratory at Ford before joining the Materials Science and Engineering Department at the University of Michigan. Shuyi Zhang is a senior Ph.D student under Dr. Graham’s supervision and has more than 10 peer reviewed papers published in top scientific journals within Nature Publishing Group (NPG) and American Chemical Society (ACS).

The webinar, hosted by Materials Today, will identify structural changes that heterogeneous catalysts undergo during realistic chemical reactions. TiO2-supported Pd catalysts are heated to 500 °C under different reducing and oxidizing environments to directly observe the migration of TiOx onto and off of the Pd nanoparticle surface. As the catalysts are heated under reducing conditions, an amorphous, TiOx layer forms on the Pd surface initially, then transitions into a crystalline TiOx layer that shields the Pd from the surrounding gas. This marks the first time that this reaction sequence has been directly observed at atomic resolution, and it may have profound implications for understanding and manipulating catalytic activity. These results demonstrate how atmospheric control available with an in situ TEM enables groundbreaking research in the field of catalysis.


Some of the key leaning points of this free webinar are:

  • Learn how leading researchers are pioneering the use of in situ TEM microscopy to advance our understanding of catalyst materials.
  • See atom by atom analysis of how nanoparticle catalysts oxidize at high temperatures in different gaseous environments.
  • Learn about how any modern TEM can be used to study materials at pressure up to 1 atm and at temperatures up to 1000 °C.
  • Explore the challenges of developing modern catalysts and how in-situ TEM studies can be a powerful and cost effective technique to meet the diverse needs of researchers.
  • Ask experts questions about catalysts and your own research.

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