Performances and Deactivation of Supported Precious Metal Catalysts in the Oxidation of an Engine Oil Vapour

Abstract

AIR+DBI:FGANon

Improvement of Silica–alumina Supports for Diesel Oxidation Catalysts through Control of Both Composition and Pore Structure

“…The volatility of decane is relatively high, since its boiling point is as low as 174 under atmospheric pressure, and the saturated vapor pressure at the experimental temperature (20 ) estimated from Antoine's Equation equates to 11,800 ppm C. Thus it appears that decane is immediately vaporized after its atomization from the nozzle in mist form. In contrast, during 1-methylnaphthalene, gas oil and BDF mist oxidation, the T50 values of those samples having larger macropores were approximately [15][16][17][18][19][20] lower than the values obtained from samples with smaller or no macropores. The boiling point of 1-methylnaphthalene is 240 , while the 90 % distillation temperatures of gas oil and BDF are approximately 350 and 400 , respectively.…”

“…Mati et al 19) investigated the influence of engine oil on the catalyst by vaporizing the oil and supplying it to the catalyst bed with a flow of N2 gas, but in this method the composition of the vaporized oil may vary with temperature and time, since the oil is composed of HCs with different boiling temperatures and volatilities. To avoid this problem, we constructed a reaction system for supplying fuel mist to the catalyst bed directly by employing an air atomizing nozzle normally used in inductively coupled plasma spectrometry (Fig.…”

Effect of Macropore Formation in Pt Catalyst Supports on the Oxidation Activity for Diesel Fuel Mist

“…The main difficulty in conducting mist oxidation reactions on a laboratory scale is supplying the desired amount of fuel, due to its low volatility and high boiling point. Mati et al 12 investigated the influence of engine oil on the catalyst by vaporizing the oil and supplying it to the catalyst bed by a flow of N 2 gas. In contrast, in this study, we tried to investigate the influence of the fuel mist on the catalytic activity.…”