In order to improve the catalytic formulations for soot removal in after-treatment emission control technologies gasoline and diesel engine vehicle, an isotopic study was approached using transitory labeled oxygen response method over model catalysts that allows unraveling of oxidation mechanism. Ce-based materials promote exchange associated with high population lattice species (O 2- ) denoted...

The hygroscopic growth and droplet activation of uncoated soot particles and such coated with succinic acid and sulfuric acid were investigated during the IN-11 campaign at the Aerosol Interaction and Dynamics in the Atmosphere (AIDA) facility. A GFG-1000 soot generator applying either nitrogen or argon as carrier gas and a miniCAST soot generator were utilized to generate soot particles. Diffe...

Effective temperatures of pulsed-laser-heated soot particles were derived from their thermal emission intensities using optical pyrometry in a laminar ethylene coflow diffusion flame. The present study concerns conditions of relatively low laser fluences under which soot particles are heated to temperatures below 3500 K to avoid complications of soot particle vaporization in both the experiment...

The cryptomelane catalysts containing transition metal (M/K-OMS-2, M = Cu, Ni, Co, Cr and Fe) was synthesized characterized by XRD, TEM/EDX, XRF, XPS, Raman, H2-TPR corroborated potassium thermal desorption measurements. were tested for soot oxidation in tight loose contact modes various conditions: O2, O2 + NO, SO2, NO SO2. alterations the activity discussed terms of manganese average number, ...

Emissions from automobiles vehicles are already a big part of the environmental pollution that seriously affects symmetrical nature atmosphere. Vehicle emissions contribute significant role to pollution, in particular particulate emission. In this technical review, past and recent research studies with effects diverse post injections strategies on engine combustion performance emission reductio...