Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 342, Issue 2, Pages 253-260Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2009.10.059
Keywords
Hydrogen sulfide; Iron oxide/hydroxide; Nanoparticle; Microemulsion; Surfactant; Sorption; Sorbent; Absorption; H2S
Categories
Funding
- Natural Science and Engineering Research Council of Canada (NSERC)
- Alberta Ingenuity Centre for In Situ Energy (AICISE)
- Centre for Environmental Engineering Research and Education (CEERE) at the University of Calgary
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Ultradispersed catalysts significantly enhance rates of reaction and mass transfer by virtue of their extended and easy accessible surface. These attractive features were exploited in this study to effectively capture H2S(g) from an oil phase by ultradispersed sorbents. Sorption of H2S(g) from oil phases finds application for scavenging H2S(g) forming during heavy oil extraction and upgrading. This preliminary investigation Simulated heavy oil by (w/o) microemulsions having 1-methyl-naphthalene; a high boiling point hydrocarbon, as the continuous phase. H2S(g) was bubbled through the microemulsions which contained the ultradispersed sorbents. The type and origin of sorbent were investigated by comparing in situ prepared FeOOH and commercial alpha-Fe2O3 nanoparticles as well as aqueous FeCl3 and NaOH solutions dispersed in the (w/o) microemulsions. The in situ prepared FeOOH nanoparticles captured H2S(g) in a chemically inactive form and displayed the highest sorption rate and capacity. Temperature retarded the performance of FeOOH particles, while mixing hall no significant effect. (C) 2009 Elsevier Inc. All rights reserved.
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