The Kinetics of Catalytic Incineration of Dimethyl Sulfide and Dimethyl Disulfide over an MnO/Fe₂O₃ Catalyst

Abstract

The catalytic incineration of dimethyl sulfide and dimethyl disulfide [(CH3)2S and (CH3)2S2] over an MnO/Fe2O3 catalyst was carried out in a bench-scale catalytic incinerator. Three kinetic models (i.e., the power-rate law, the Mars and Van Krevelen model, and the Langmuir-Hinshelwood model) were used to analyze the results. A differential reactor design was used for best fit of kinetic models in this study. The results show that the Langmuir-Hinshelwood model may be feasible to describe the catalytic incineration of (CH3)2S and (CH3)2S2. This suggests that the chemical adsorption of O2 molecules is important in this incineration.

High temperature removal of hydrogen sulfide using an N-150 sorbent

“…9 plots the equilibrium constants as a function of temperatures for MnSO 4 and FeSO 4 . It is clearly to show that the equilibrium constants for MnSO 4 and FeSO 4 are very vast, indicating that the sulfate formation is favorable. The equilibrium constants decrease with temperature for two cases.…”

“…This product was widely employed as an environmental catalyst for incinerating VOCs and sulfurcontaining VOCs in the early study of our group [3][4][5] oxides as high temperature desulfurization sorbents and evaluated their potential via thermodynamic considerations. Of all the candidate solid metal oxides, both manganese and iron oxides showed the thermodynamic feasibility for high temperature desulfurization [6].…”