Jp. Boudou et al., ACTIVATED CARBONS FROM MIXTURES OF COAL PITCH AND FECL3-GRAPHITE INTERCALATED COMPOUNDS, Journal of physics and chemistry of solids, 57(6-8), 1996, pp. 753-759
Processing of granular and powdered activated carbons was performed by
carbonization of coal pitch (precursor) loaded with natural polycryst
alline graphite particles initially intercalated by iron (III) chlorid
e (chemical activator). The resulting char was steam activated at high
temperature. Interactions of hydrogen sulfide and molecular oxygen wi
th the microporous material were studied by means of isothermal adsorp
tion on the pulverized carbon and by temperature-programmed desorption
. The results suggest that chemisorption and catalytic oxidation of hy
drogen sulfide occur on basic sites resulting from the chemisorption o
f molecular oxygen on to the iron (II, III) oxide and on the carbon su
rface.