Effect of V2O5 loading of V2O5/TiO2 catalysts prepared via CVC and impregnation methods on NOx removal

Cha, Woojoon; Chin, Sungmin; Park, Eunseuk; Yun, Seong Taek; Jurng, Jongsoo

doi:10.1016/j.apcatb.2013.05.002

Cited by 35 publications

(21 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, it is significant to improve the properties of the active component, while the vanadium content is fixed to increase the application scope of the catalyst. The V 4+(3+) /V 5+ valence ratio of V 2 O 5 -WO 3 /TiO 2 is an important factor which has been found by many researchers [14][15][16][17] and our previous work. And many experimental results have also been reported in Ming Kong et al, 3 Patrick G.W.A et al, 4 Chizhong Wang et al 5 and Anju Shi et al 6 studies for the V 2 O 5 -WO 3 /TiO 2 catalysts.…”

Section: Introductionmentioning

confidence: 60%

Effect of the V⁴⁺⁽³⁺⁾/V⁵⁺ ratio on the denitration activity for V₂O₅–WO₃/TiO₂ catalysts

et al. 2015

View full text Add to dashboard Cite

In this study, the V 4+(3+) /V 5+ valence ratio on the surface of V 2 O 5 -WO 3 /TiO 2 catalysts was adjusted by changing the oxygen flux in the calcination process and the effect on the denitration activity was evaluated. The physicochemical properties of catalysts were characterized by X-ray diffraction (XRD), H 2 temperature programmed reduction (H 2 -TPR), NH 3 in situ infrared spectroscopy (NH 3 -DRIFT) and N 2 adsorptiondesorption. The results showed that an appropriate V 4+(3+) /V 5+ ratio is beneficial to improve the denitration activity due to the increased acidic sites, which decreases the apparent activation energy (E a ) and ensures the electron transfer in the process of the mutual transformation of V 4+(3+) and V 5+ . A too high or low V 4+(3+) /V 5+ ratio is unfavorable to the denitration activity.

show abstract

Section: Introductionmentioning

confidence: 60%

Effect of the V⁴⁺⁽³⁺⁾/V⁵⁺ ratio on the denitration activity for V₂O₅–WO₃/TiO₂ catalysts

et al. 2015

View full text Add to dashboard Cite

show abstract

“…6a). Furthermore, the widely used conventional, V 2 O 5 /TiO 2 39–41 and V 2 O 5 -WO 3 /TiO 2 38,42,48 , were synthesized for comparison. NO conversion of VT-1 (82%) was higher than that of V 2 O 5 /TiO 2 (30%) and V 2 O 5 -WO 3 /TiO 2 (28%) at 120 °C.…”

Section: Resultsmentioning

confidence: 99%

A zeolitic vanadotungstate family with structural diversity and ultrahigh porosity for catalysis

et al. 2018

View full text Add to dashboard Cite

Design of the structure and composition of crystalline microporous inorganic oxides is of great importance in catalysis. Developing new zeolites is one approach towards this design because of the tunable pore system and high thermal stability. Zeolites are limited to main group elements, which limits their applications in redox catalysis. Another promising choice is zeolitic transition metal oxides providing both porosity and redox activity, thereby further expanding the diversity of porous materials. However, the examples of zeolitic transition metal oxides are rare. Here, we report a new class of zeolitic vanadotungstates with tunable frameworks exhibiting a large porosity and redox activity. The assembly of [W4O16]8− units with VO2+ forms two isomeric porous frameworks. Owing to the complex redox properties and open porosity, the vanadotungstates efficiently catalyse the selective reduction of NO by NH3. This finding provides an opportunity for design and synthesis of inorganic multifunctional materials for future catalytic applications.

show abstract

“…Transition metal-based oxide catalysts such as Fe/TiO 2 (Long and Yang, 2002), Cu/ZrO 2 (Łamacz et al, 2013), V/TiO 2 (Cha et al, 2013), and FeVO 4 /TiO 2 have been reported as promising candidates for potential application in diesel engine exhaust treatment. Moreover, CeO 2 has been studied extensively due to its excellent oxygen storage capacity and redox properties via the shift between Ce 4+ and Ce 3+ in oxidizing and reducing conditions, respectively (Reddy et al, 2003;Qu et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of Ce doping of TiO2 support on NH3-SCR activity over V2O5–WO3/CeO2–TiO2 catalyst

Cheng

Liu

Zhang

et al. 2014

Journal of Environmental Sciences

109

View full text Add to dashboard Cite

Effect of V2O5 loading of V2O5/TiO2 catalysts prepared via CVC and impregnation methods on NOx removal

Cited by 35 publications

References 28 publications

Effect of the V⁴⁺⁽³⁺⁾/V⁵⁺ ratio on the denitration activity for V₂O₅–WO₃/TiO₂ catalysts

Effect of the V⁴⁺⁽³⁺⁾/V⁵⁺ ratio on the denitration activity for V₂O₅–WO₃/TiO₂ catalysts

A zeolitic vanadotungstate family with structural diversity and ultrahigh porosity for catalysis

Effect of Ce doping of TiO2 support on NH3-SCR activity over V2O5–WO3/CeO2–TiO2 catalyst

Contact Info

Product

Resources

About

Effect of V2O5 loading of V2O5/TiO2 catalysts prepared via CVC and impregnation methods on NOx removal

Cited by 35 publications

References 28 publications

Effect of the V4+(3+)/V5+ ratio on the denitration activity for V2O5–WO3/TiO2 catalysts

Effect of the V4+(3+)/V5+ ratio on the denitration activity for V2O5–WO3/TiO2 catalysts

A zeolitic vanadotungstate family with structural diversity and ultrahigh porosity for catalysis

Effect of Ce doping of TiO2 support on NH3-SCR activity over V2O5–WO3/CeO2–TiO2 catalyst

Contact Info

Product

Resources

About

Effect of the V⁴⁺⁽³⁺⁾/V⁵⁺ ratio on the denitration activity for V₂O₅–WO₃/TiO₂ catalysts

Effect of the V⁴⁺⁽³⁺⁾/V⁵⁺ ratio on the denitration activity for V₂O₅–WO₃/TiO₂ catalysts