Selective Catalytic Oxidation of Hydrogen Sulfide on Activated Carbons Impregnated with Sodium Hydroxide

Journal Article · Thu Jan 01 04:00:00 EST 2009 · Energy & Fuels

OSTI ID:958926

Schwartz, Viviane ^[1]; Baskova, Svetlana ^[1]; Armstrong, Timothy R. ^[1]

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1. ORNL

Two activated carbons of different origin were impregnated with the solution of sodium hydroxide (NaOH) of various concentrations up to 10 wt %, and the effect of impregnation on the catalytic performance of the carbons was evaluated. The catalytic activity was analyzed in terms of the capacity of carbons for hydrogen sulfide (H2S) conversion and removal from hydrogen-rich fuel streams and the emission times of H2S and the products of its oxidation [e.g., sulfur dioxide (SO2) and carbonyl sulfide (COS)]. The results of impregnation showed a significant improvement in the catalytic activity of both carbons proportional to the amount of NaOH introduced. NaOH introduces hydroxyl groups (OH-) on the surface of the activated carbon that increase its surface reactivity and its interaction with sulfur-containing compounds.

• Research Organization: Oak Ridge National Laboratory (ORNL); Center for Nanophase Materials Sciences
• Sponsoring Organization: FE USDOE - Office of Fossil Energy (FE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 958926
• Journal Information: Energy & Fuels, Journal Name: Energy & Fuels Vol. 23; ISSN 0887-0624; ISSN ENFUEM
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ACTIVATED CARBON
CAPACITY
CARBON OXYSULFIDE
HYDROGEN SULFIDES
IMPREGNATION
ORIGIN
OXIDATION
PERFORMANCE
REMOVAL
SODIUM HYDROXIDES
SULFUR DIOXIDE