Pore structure of soot deposits from several combustion sources

Soot was harvested from five combustion sources: a dodecane flame, marine and bus diesel engines, a wood stove, and an oil furnace. The soots ranged from 20% to 90% carbon by weight and molar C/H ratios from 1 to 7, the latter suggesting a highly condensed aromatic structure. Total surface areas (by...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2000-10, Vol.41 (8), p.1125-1135
Main Authors: Rockne, Karl J, Taghon, Gary L, Kosson, David S
Format: Article
Language:English
Subjects:
Air Pollutants - chemistry
Air pollution
Applied sciences
Atmospheric pollution
Black carbon
Carbon - analysis
Carbon - chemistry
Combustion and energy production
Density functional theory
Exact sciences and technology
Hydrogen - analysis
Incineration
Micro-pore
Pollution
Pollution sources. Measurement results
Porosity
Soot
Surface area
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Summary:Soot was harvested from five combustion sources: a dodecane flame, marine and bus diesel engines, a wood stove, and an oil furnace. The soots ranged from 20% to 90% carbon by weight and molar C/H ratios from 1 to 7, the latter suggesting a highly condensed aromatic structure. Total surface areas (by nitrogen adsorption using the Brunauer Emmett Teller, BET method) ranged from 1 to 85 m 2 g −1. Comparison of the surface area and meso-pore (pores 2–50 nm) surface area predicted by density functional theory (DFT) suggested that the soot was highly porous. Total meso-pore volume and surface area ranged from 0.004–0.08 cm 3 g −1 and from 0.33–6.9 m 2 g −1, respectively, accounting for up 33% of the BET surface area. The micro-pore volume (pores
ISSN:0045-6535
1879-1298
DOI:10.1016/S0045-6535(00)00040-0