Hydrogen sulfide oxidation on RE(RE=Sm, Y, La)–V–Sb catalysts: Effects of RE size and electronegativity

Li, Kuo−Tseng; Huang, Chen-Hwa

doi:10.1016/j.cattod.2011.03.070

Cited by 7 publications

(5 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Vanadium oxide based materials constitute an interesting group of catalysts which have been reported recently as potential catalysts for the partial oxidation of H2S to sulfur [5][6][7][8][9][10][11][12][13]. The supported vanadium oxide has been the most studied catalysts.…”

Section: Various Commercial Processes Have Been Used To Treat Tail Gamentioning

confidence: 99%

Vanadium oxide supported on porous clay heterostructure for the partial oxidation of hydrogen sulphide to sulfur

et al. 2015

View full text Add to dashboard Cite

Section: Various Commercial Processes Have Been Used To Treat Tail Gamentioning

confidence: 99%

Vanadium oxide supported on porous clay heterostructure for the partial oxidation of hydrogen sulphide to sulfur

et al. 2015

View full text Add to dashboard Cite

“…It is clear that reducing reducibility of Vsites could favor a decrease of the rate of consecutive reaction. However, this will depend on the reaction conditions, especially reaction temperature and feed composition [6][7][8][9][10][11][12][13]38].…”

Section: Discussionmentioning

confidence: 99%

“…Table 1 summarizes the H2-uptake achieved during the TPR-H2 experiments. In addition, the TPR-H2 profiles of catalysts are presented as supplementary information 9 ( Fig. S1).…”

Section: Catalyst Characterizationmentioning

confidence: 99%

See 1 more Smart Citation

Catalytic behavior of NaV6O15 bronze for partial oxidation of hydrogen sulfide

et al. 2014

View full text Add to dashboard Cite

ElsevierSoriano Rodríguez, MD.; Rodriguez-Castellon, E.; Garcia-Gonzalez, E.; López Nieto, JM. (2014). Catalytic behavior of NaV6O15 bronze for partial oxidation of hydrogen sulfide. Catalysis AbstractNa-containing V2O5 materials have been prepared hydrothermally from gels with Na/V ratios of 0.02 to 0.34, and calcined at 500ºC. The calcined samples have been characterized and tested as catalysts in the partial oxidation of H2S to elemental sulfur.At low Na-contents, V2O5 and NaV6O15 bronze are formed, with the NaV6O15/V2O5 ratio increasing with the Na-content. Pure NaV6O15 bronze is mainly formed from gels containing a Na/V ratio of 0.18. However, NaV6O15 and NaV3O8 bronzes are formed at from gels with Na/V ratio higher than 0.35. NaV6O15 based catalyst shows high conversion for the oxidation of H2S with a high selectivity into elemental sulfur. These catalysts are more active and stable than pure or Na-doped V2O5 catalysts. V4O9 is observed in used catalysts derived from pure and Na-doped V2O5 and materials containing NaV6O15/V2O5 mixtures. However, no changes in the NaV6O15 crystalline structure are observed in pure and NaV6O15/V2O5 mixtures catalysts. Accordingly, NaV6O15 crystalline phase is stable for several hours of catalysis at a difference with V2O5. The active sites in V-containing vanadium catalysts are probably V 5+ -O-V 4+ pairs as proposed for V4O9 crystalline phase. The best catalytic performances were achieved on V2O5-NaV6O15 mixtures which are transformed to V4O9-NaV6O15 mixtures during the catalytic tests. These catalytic results could be due to the intrinsic physical properties of both phases but also because of the optimal dispersion.Keywords: NaV 6 O 15 bronze, V 2 O 5 , V 4 O 9 , selective oxidation of hydrogen sulfide to sulfur, Na-doped vanadium oxide catalyst 3

show abstract

“…Vanadium oxides-based catalysts have been the most active phases reported in the literature for the H 2 S selective catalytic oxidation due to the high conversion and selectivity to elemental sulfur [ 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. Vanadium oxide catalysts in the form of V 2 O 5 nanocrystals suffer a partial reduction to form V 4 O 9 , by the treatment of V 2 O 5 in H 2 S/air during the partial oxidation of H 2 S at ca.…”

Section: Introductionmentioning

confidence: 99%

Selective Oxidation of Hydrogen Sulfide to Sulfur Using Vanadium Oxide Supported on Porous Clay Heterostructures (PCHs) Formed by Pillars Silica, Silica-Zirconia or Silica-Titania

et al. 2018

View full text Add to dashboard Cite

Vanadium oxide (V2O5) species has been supported on different porous clay heterostructures (with silica pillars, silica-zirconia with a molar ratio Si/Zr = 5 and silica-titania with a molar ratio Si/Ti = 5) by wetness incipient method. All catalysts were characterized by X-ray diffraction (XRD), N2 adsorption-desorption at −196 °C, NH3 thermoprogrammed desorption (NH3-TPD), Raman spectroscopy, diffuse reflectance UV-Vis and X-ray photoelectron spectroscopy (XPS). After that, the catalytic activity of the vanadium-based catalysts was evaluated in the selective oxidation of H2S to elemental sulfur. The catalytic data show that both the activity and the catalytic stability increase with the vanadium content, obtaining the highest conversion values and sulfur yield for the catalysts with vanadium content of 16 wt.%. The comparison among all supports reveals that the incorporation of TiO2 species in the pillars of the PCH improves the resistance to the deactivation, attaining as best results a H2S conversion of 89% for SiTi-PCH-16V catalyst and elemental sulfur is the only compound detected by gas chromatography.

show abstract

Hydrogen sulfide oxidation on RE(RE=Sm, Y, La)–V–Sb catalysts: Effects of RE size and electronegativity

Cited by 7 publications

References 18 publications

Vanadium oxide supported on porous clay heterostructure for the partial oxidation of hydrogen sulphide to sulfur

Vanadium oxide supported on porous clay heterostructure for the partial oxidation of hydrogen sulphide to sulfur

Catalytic behavior of NaV6O15 bronze for partial oxidation of hydrogen sulfide

Selective Oxidation of Hydrogen Sulfide to Sulfur Using Vanadium Oxide Supported on Porous Clay Heterostructures (PCHs) Formed by Pillars Silica, Silica-Zirconia or Silica-Titania

Contact Info

Product

Resources

About