Explorations on the continuous oxidation kinetics of diesel PM from heavy-duty vehicles using a single ramp rate method

Abstract

This is a repository copy of Explorations on the continuous oxidation kinetics of diesel PM from heavy-duty vehicles using a single ramp rate method.

Effects of Nonthermal Plasma on Microstructure and Oxidation Characteristics of Particulate Matter

“…Smaller PM particles can be suspended in the air for long periods and are the main cause of haze. Thus, to reduce the emission of PM from diesel engines, scholars both domestic and abroad have actively carried out relevant studies. − …”

Influences of magnetic field on the removal of submicron particles in electrostatic cyclone at different temperatures

“…In recent years, with the continuous occurrence of haze in major cities in China [1][2], air quality has become increasingly worse. More and more attention has been paid to the harm caused by fine particles, with the emission of vehicle exhaust being of the main sources of pollution [3][4][5]. Submicron particles refer to particles whose aerodynamic equivalent size is less than 1 μm in atmospheric dust inhalation [6][7][8], and they can easily enter human alveolar and cause serious harm to human health [9][10].…”

Oxidation Kinetic Analysis of Diesel Particulate Matter using Single- and Multistage Methods

“…The commonly used method to test PM oxidation behaviors is thermogravimetric analysis (TGA), which monitors the sample mass changes at a given temperature program 6,7 . Based on the oxidation profiles, different methods were used to calculate kinetic parameters (activation energy, pre-exponential factors, and reaction rate constant) [7][8][9] . Activation energy of diesel PM sampled at different conditions (engine operation conditions, engine types, fuel types, aftertreatment technologies) was in the range of 80 kJ/mol ~230 kJ/mol [10][11][12][13][14][15][16][17] .…”

“…López-Fonseca et al 7 obtained the oxidation kinetic lines using single-step oxidation profiles, with results that the temperature ramp rates (1.5 °C/min~7.5 °C/min) had a limited effect on activation energy. Due to the disadvantages of TGA method as mentioned in reference 9 , Gao et al 11 put forward a differential scanning calorimetry (DSC) based method to investigate PM oxidation behaviors and calculate the oxidation kinetic parameters. This method 11 accurately showed the mass loss history caused by the chemical reactions rather than OC volatilization.…”

“…The commonly used method to test PM oxidation behaviors is thermogravimetric analysis (TGA), which monitors the sample mass changes at a given temperature program. , Based on the oxidation profiles, different methods were used to calculate the kinetic parameters (activation energy, pre-exponential factors, and reaction rate constant). − The activation energy of diesel PM sampled at different conditions (engine operation conditions, engine types, fuel types, and after-treatment technologies) was in the range of 80–230 kJ/mol. − The values, calculated using multiple ramp rate oxidation profiles (Kissinger–Akahira–Sunose method), increased generally with a mass drop in the oxidation process. López-Fonseca et al .…”