Breakthrough Analysis OF H 2 S removal on CU-V-MO, CU-V, and CU-MO mixed oxides

Abstract

Kinetic studies carried out for the sorption of H 2 S in the presence and absence of hydrogen on Cu-V-Mo, Cu-V, and Cu-Mo mixed oxides gave detailed information about the reaction sequences. Formation of SO 2 even in the presence of hydrogen at the initial stages of the sorption process showed the partial reduction of the metal oxides prior to the sulfidation step. A sorption experiment carried out with Cu-Mo mixed oxide gave incomplete sulfidation of molybdenum, whereas with Cu-V mixed oxide complete sulfidation was obtained. Predictions of the breakthrough curves by the deactivation model showed good agreement with the experimental results.

Copper toxicity in Chinese cabbage is not influenced by plant sulphur status, but affects sulphur metabolism‐related gene expression and the suggested regulatory metabolites

“…; Yaşşyerli et al . ). If H 2 S functions as an endogenous gaseous transmitter in the crosstalk between the sulphate reduction pathway in the chloroplasts/plastids and the transcription of sulphate transporters/sulphate reducing enzymes in the nucleus, a Cu‐induced decrease in H 2 S concentration might be responsible for the observed up‐regulation of expression and activity of the sulphate transporters.…”

Selective catalytic oxidation of H 2 S to elemental sulfur over titanium based Ti–Fe, Ti–Cr and Ti–Zr catalysts

“…SO 2 formation was not observed during sulfidation with mixed metal oxide TieFe catalyst and TiO 2 catalyst. In our previous studies, SO 2 formation in the initial stages of sulfidation was observed with single or mixed metal oxide sorbents due to contribution of lattice oxygen of metal oxide at reducing athmosphere [16,43,44]. It could be said that oxygen mobility of TieFe mixed metal oxide catalyst to form SO 2 from H 2 S is lower.…”

Scavenging H2S(g) from oil phases by means of ultradispersed sorbents

“…Another possible factor could be the aggregation of nanoparticles. Larger size aggregates reduce rates of surface reactions [32,33]. At 60°C and 120°C, two liquid phases were distinguished in the spent microemulsion: one clear liquid and one cloudy foamy phase.…”