Associate Professor Hisashi Nakamura 

Institute of Fluid Science

Tohoku University

hisashi.nakamura@tohoku.ac.jp

Hisashi Nakamura received his PhD degree in Engineering from Tohoku University in 2006. He became an Assistant Professor of Institute of Fluid Science, Tohoku University in 2007 and was promoted to an Associate Professor in 2015. He was a Visiting Researcher of Combustion Chemistry Centre, National University of Ireland, Galway for one year from Sep. 2011. His research interest includes combustion in the areas of laminar flames and chemical kinetics for hydrocarbons, low-carbon fuels, and battery electrolytes. He has published more than 70 refereed journal papers. The citation of his papers is more than 1500 and his h-index is 24 from Web of Science.

Title: Reaction zone separation by a micro flow reactor with a controlled temperature profile for validation of chemical reaction models of hydrocarbons, ammonia, refrigerants, and battery electrolytes

Abstract: To reduce emissions from combustion devices and fire accidents in energy systems, fundamental understandings on chemical kinetics and reliable chemical reaction models are essential. Because of the nature of reaction zone separation by a micro flow reactor with a controlled temperature profile (MFR), multi-stage reactions have been identified for various reactants with visualization and species measurements. Direct photography with long exposure time or laser induced fluorescence was used for visualization. Gas chromatography (GC), mass spectrometry (MS), GC-MS, or Fourier-transform infrared spectroscopy was used for species measurements. This presentation introduces various types of multi-stage reactions observed in MFR such as cool flame + blue flame + hot flame, pyrolysis + blue flame + hot flame, two-staged cool flames, oxidation + PAH growth + soot formation, ammonia oxidation + NO formation, NO-NO2 loop effects on blue flame, HF formation + CO oxidation + H2O decomposition, and HF formation + C2F6 decomposition + CO oxidation. The presentation also introduces effectiveness of multi-stage reactions for development and validation of chemical reaction models of these reactants.