ChemistryWestern Science

N. Stewart McIntyre

N. Stewart McIntyre

Contact Information

Title: Professor Emeritus
Director Surface Science Western
Office: Rm G-1 WSC
Phone (Office): ext 86703
E-mail: smcintyr@uwo.ca

Research Areas

Surface Analytical Chemistry

Education

B.Sc. Ph.D., U.W.O.


Research

  1. Heterogeneous Catalysis of Metal Oxide and Metal Sulphide Surfaces: Gas-solid and solid-solid chemical reactions of several oxide and sulphide systems are being studied to understand abstraction processes leading to the surface decomposition of water or organic molecules such as thiophene or methane. Such reactions are important to industrial processes such as hydrodesulphurization and oxidative coupling. The reactions are usually studied on polycrystalline thin film oxides characterized using X-ray photoelectron spectroscopy (XPS or ESCA), scanning Auger microscopy (SAM) and Raman microprobe.
  2. Oxidation Processes on Metal and Alloy Surfaces: The growth mechanisms of thin oxide films on polycrystalline surfaces are studied using microscopic surface techniques. Recent studies involve alloys of nickel, magnesium and zirconium.
  3. Surface Analytical Chemistry: Secondary ion mass spectrometry (SIMS) is being developed as a microanalytical technique capable of analyzing solids to give a three-dimensional elemental distribution. Problems of preferential sputtering, matrix correction and volume representation need to be addressed through a combination of computer software development and chemical experimentation.

Publications