Soot oxidation: dependence upon initial nanostructure

Impact of exhaust gas recirculation (EGR) on the oxidative reactivity of diesel engine soot

HRTEM study of diesel soot collected from diesel particulate filters

(1997). A History of Single Aerosol Particle Levitation. Aerosol Science and Technology: Vol. 26, No. 3, pp. 212-254.

https://www.tandfonline.com/doi/pdf/10.1080/02786829708965426

A History of Single Aerosol Particle Levitation

A novel binderless preparative route is described for the production of phenolic-resin-derived carbons for use as catalyst supports and adsorbents. The carbons can be produced in a wide variety of physical forms ranging from simple granules to large monolithic structures. The fully interconnected macropore structure of the carbons, which derives from the interconnected voids between the primary resin particles, can be precisely controlled to give a mean macropore size of between around 1 and 50 microns. This then gives rise to very high permeabilities that can be orders of magnitude higher than conventional porous support materials. The microstructure of the carbons appears to derive from the void spaces between small (∼4 nm) spherical resin domains generated during the initial polymer curing step which gives rise to a very narrow pore distribution with a mean pore size of ≈0.8 nm. This is in contrast to earlier studies that suggested the pores reflected voids in a tangled ribbon structure. The high purity of the carbons (total metals content of

Phenolic-resin-derived activated carbons

The phenomenon of gasification-induced carbon densification and its influence on pore structure evolution

Natural convection induced drag forces on spheres at low Grashof numbers: comparison of theory with experiment

Une technique est presentee pour la mesure de l'aire superficielle des particules microporeuses en suspension. Cette methode est basee sur l'adsorption de CO 2

Single-particle surface area measurements in the electrodynamic balance

Charge loss due to particle heating has experimentally been found to represent the most serious limitation in studying single particle, high temperature, gas-solid reactions in the electrodynamic balance (EDB). Experimentally, charge loss appears to be a function of particle work function, particle temperature. electric field strength, and adsorbed species contamination. Particle charge loss for the pulsed laser heating experiments is approximately the same for positively and negatively charged spherocarb particles. Although some residual questions remain, thermionic emission appears to be the most probable mechanism for charge loss. The Richardson-Dushman equation successfully predicts rapid charge loss from Spherocarb particles at 1200-1300K and from potassium catalyzed Spherocarb at 750 K. A modified Richardson-Dushman equation has been proposed for the inclusion of the effect of electric field, adsorbed species, and surface irregularities on charge loss rate in order to correlate the experime...

D. R. Dudek

Papers

The phenomenon of gasification-induced carbon densification and its influence on pore structure evolution

Natural convection induced drag forces on spheres at low Grashof numbers: comparison of theory with experiment

Single-particle surface area measurements in the electrodynamic balance

Charge Loss from Heated Particles Levitated in an Electrodynamic Balance