FUEL 41 |
| Nanosized metal sulfide powders of Ag2S, CuS, FeS, Ga2S3, In2S3, MnS, NiS, and ZnS were synthesized for sue as gas and liquid phase mercury sorbents. An aqueous synthesis method using the surfactant cetyltrimethylammonium bromide (CTAB) was used to make the metal sulfides. Vapor and aqueous phase mercury sorption characteristics of the synthetic nanocrystalline powders and of commercially produced Ag2S, Au2S, and Au2S3 are discussed. The results of this work show that nano-sized metal sulfide powders can be synthesized and used as gaseous and aqueous mercury sorbents either with or without CTAB, however the nano-sized particles (CTAB mediated) exhibit at least a 2X enhancement in their mercury sorption rate. These studies demonstrate that the metal sulfides are effective for removal of mercury from solution. To date, we have been unable to evaluate the reaction mechanism and final products for these interesting materials. Details of our experimental results to date will be presented. |
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Mercury and Other Trace Elements in Fuel: Emissions and Control
1:25 PM-5:00 PM, Sunday, April 6, 2008 Morial Convention Center -- Rm. 240/241, Oral
Division of Fuel Chemistry |