Laboratory study of poisoning of a MnO/Fe2O3 catalyst by dimethyl sulfide and dimethyl disulfide

Catalytic activity of Fe/ZrO2 nanoparticles for dimethyl sulfide oxidation

“…The product selectivity indicates that a fraction of the active sites are deactivated due to the sulfur poisoning and unable to convert the ozone in active species on FZ catalyst. A similar, rapid decline of the performance of Pt/Al 2 O 3 catalyst has been observed due to the oxidation of DMS, forming irreversible sulfur-poisoning sites [54]. It can also be seen that the selectivity of partial oxidation product increased with extended reaction time for FZ catalyst.…”

“…Using oxygen as an oxidant, the DMS conversion values at 150°C are attained a maximum value of 56% and 36% for FZN nanocatalyst and FZ catalyst, respectively. Further increase in reaction temperature led to little decline in conversion due to the sulfur poisoning during the oxidation of DMS over catalyst [53,54]. Several researchers have also been reported that the adsorption and activation of the O 2 molecules over the catalyst surface require higher temperatures for catalytic incineration of methanethiol and DMS as described by the Langmuir-Hinshelwood model [4,55].…”

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

“…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].…”

Catalysis in VOC Abatement

“…However, the poisoning can be reversible [78] and it is dependent on temperature (e.g., Chu et al [146]). The oxidation of SVOCs may cause the deactivation of the catalyst during the time of usage.…”

“…Chu et al [146] studied the poisoning of a MnO/Fe 2 O 3 catalyst e.g. in DMDS oxidation and found out that sulphur-poisoning was dependent on the reaction temperature.…”