Rasto Brenzy

Dr. Rasto Brezny is the Executive Director of the Manufacturers of Emission Controls Association. He has worked in the area of emissions controls for over 30 years, in technology areas such as substrates, catalyst supports and reaction engineering. He has been with MECA since 2006 and was appointed MECA’s Executive Director in 2016. Prior to joining MECA, Dr. Brezny was the Marketing and Technology Manager for automotive materials products at W.R. Grace. In this position he had global responsibility for automotive catalyst product development and marketing. Prior to his commercial role, Dr. Brezny spent 11 years at Grace’s Washington Research Center developing automotive catalyst substrates and materials. Dr.Brezny holds 16 patents and has authored over 30 scientific papers.


Air Pollution and Health
Mobile Source Emission Control Technology Particulate Matter and Black Carbon


Deputy Director, Manufacturers of Emission Control Association
Global Marketing and Technology Manager, W R Grace Davison Catalysts Research Engineer, Dow Chemical


  • Ph.D. Ceramic Engineering, Penn State University
  • B.S. Ceramic Engineering, Ohio State University Boards and Expert Panels
  • EPA Mobile Source Technical Review Subcommittee of the Clean Air Act Advisory Committee
  • UN Partnership for Clean Fuels and Vehicles
  • Member of National Biodiesel Board technical advisory committee for biodiesel impurity specification program
  • OEM SCR stakeholder group and American Petroleum Institute – DEF technical steering committee
  • CARB Truck and Bus Regulation Advisory Committee
  • South Coast Air Quality Management District Scientific Review Committee


  • Characterization of Real-Time Particle Emissions from a Gasoline Direct Injection Vehicle Equipped with a Catalyzed Gasoline Particulate Filter During Filter Regeneration, Emission Control Science and Technology, Feb. 5, 2016
  • “Effect of Drive Cycle and Gasoline Particulate Filter on the Size and Morphology of Soot Particles Emitted from A Gasoline Direct Injection Vehicle” Sept. 4, 2015
Rasto Brenzy
Rasto Brenzy