Adsorbed molecular oxygen and the surface behavior of soot

Conference · Tue Oct 01 00:00:00 EDT 1996

OSTI ID:370307

Smith, D M; Atteya, M M.O.; Konowalchuk, B K ^[1]

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1. Univ. of Denver, CO (United States); and others

An important role of adsorbed molecular oxygen, beyond various previously-described effects of chemisorbed oxygen and carbon-oxygen surface functional groups, is evident in several adsorption phenomena and surface reactions of n-hexane soot. The influence of physisorbed O{sub 2} on the hydration of the soot surface and on its adsorption of SO{sub 2} and NH{sub 3}, the central role of oxygen in soot {open_quotes}aging{close_quotes}, and its participation in carbon particle-ozone reactions, are among the phenomena observed through studies utilizing microgravimetery, EPR, and FTIR spectroscopy. The use of variations in soot`s unpaired electron spin density to monitor the behavior of a paramagnetic adsorbate (O{sub 2} in this case) has been particularly helpful in exploring these effects.

• OSTI ID: 370307
• Report Number(s): CONF-960376--
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
54 ENVIRONMENTAL SCIENCES
ADSORPTION
AIR POLLUTION
AMMONIA
COMBUSTION PRODUCTS
ELECTRON SPIN RESONANCE
GASEOUS WASTES
HEXANE
HYDRATION
INFRARED SPECTRA
OXYGEN
OZONE
PETROLEUM PRODUCTS
POLLUTANTS
SOOT
SULFUR DIOXIDE