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Carbon catalyzed SO2 oxidation by NO2 and O3The oxidation of SO2 to sulfate on carbon particles by trace quantities of NO2 and O3 was studied. Particulate carbon black was either: (1) directly exposed on the pan of a microbalance to various humidified mixtures of SO2 and oxidant gas and the resultant weight gains monitored, or (2) the gas mixtures were bubbled through aqueous suspensions of carbon black and pure water blanks. In each set of experiments the run times were varied appropriately and the yields of sulfate were determined analytically. Conversion of SO2 to sulfate was thus characterized as a function of exposure time and of oxidant gas. Carbon black was determined to be an excellent catalyst for SO2 oxidation to sulfate by both NO2 and O3. No saturation effects were observed in either experimental approach. Conversions of SO2 to sulfate did not appear pH dependent.
Document ID
19820034242
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Cofer, W. R., III
(NASA Langley Research Center Hampton, VA, United States)
Schryer, D. R.
(NASA Langley Research Center Hampton, VA, United States)
Rogowski, R. S.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Subject Category
Inorganic And Physical Chemistry
Report/Patent Number
AIAA PAPER 82-0089
Meeting Information
Meeting: Aerospace Sciences Meeting
Location: Orlando, FL
Start Date: January 11, 1982
End Date: January 14, 1982
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
82A17777
Distribution Limits
Public
Copyright
Other

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