John S. Roberts

Division Manager / Ph.D. / Houston


Dr. Roberts is a 1975 graduate of the University of North Dakota, with a Ph.D. in Organic Chemistry. He has wide experience in chemical and refining research, chemical, petrochemical and refining processes, power generation, fuel cells, fuels, natural gas, propane, and the odorization of fuel gases, as well as chemical contamination issues.

Dr. Roberts has experience with research and development, sales, new product development, process development and process scale-up. Dr. Roberts is a recognized expert in the odorization of fuel gases.

Dr. Roberts has been involved in the investigation of numerous fires and explosions in gas plants, refineries, chemical plants, power plants, industrial facilities, as well as residential and commercial settings. He has worked with product contamination issues in diverse areas such as gasoline, diesel fuel, natural gas, propane, propylene, LPG's and crude oils.

Representative Engagements

  • Odorization of Fuel Gases
    • Odor Fade in underground leaks, new pipe, old piping, new or used propane tanks
    • Odor Confusion
    • Odorization systems
    • Analysis of odorants
    • Sampling of gas for odorant analysis
    • Chemistry of gas odorants
  • Chemical plant and refinery fires and explosions
  • Fuel gas quality
    • Analysis of fuel gases
    • Fuel gas contaminants
  • Fuel contamination issues
  • Construction defect cases
    • Chemistry of construction products
    • Adhesives, sealants, galvanized steels, paints and coatings
  • Shipping disputes involving off specification products
  • Fuel cells


  • B.A. Chemistry, St. Olaf College, Northfield, MN
  • B.A. Mathematics, St. Olaf College, Northfield, MN
  • Ph.D. Organic Chemistry, University of North Dakota, Grand Forks, ND