Ws. Harvey et al., THERMOLYSIS OF HYDROGEN-SULFIDE IN THE TEMPERATURE-RANGE 1350-1600 K, Industrial & engineering chemistry research, 37(6), 1998, pp. 2323-2332
The thermal dissociation of hydrogen sulfide gives promise of becoming
an economic method to convert a hazardous waste into valuable product
s, conserve fossil fuels, and increase usable reserves of fossil fuels
. The dissociation rates at temperatures which are attractive for an i
ndustrial process are not well-characterized. We studied the dissociat
ion of hydrogen sulfide into hydrogen and sulfur at temperatures from
1350 to 1600 K and pressures from 15 to 30 kPa in an alumina reactor.
The rate depends on the surface-to-volume ratio of the reactor. The su
rface reaction is the dominant contributor; the activation energy for
the forward surface reaction is 194 kJ/mol. We present a global rate e
xpression that includes surface and gas-phase contributions.