Low temperature selective catalytic reduction of NOx by NH3 over Cu modified V2O5/TiO2–carbon nanotube catalyst

Raja, Saur Lumban; Alphin, M. S.

doi:10.1007/s11144-020-01735-6

Cited by 21 publications

(5 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Introductionsupporting

confidence: 65%

“…Moreover, the addition of CNTs as support would increase the surface area of the catalyst. The authors confirmed in their previous studies that the addition of CNTs greatly enhances the surface area of the catalyst (Raja and Alphin, 2020) (Raja et al, 2022). Various characterization techniques were performed to explore the relationship between the SCR performance and the physico-chemical properties of the catalysts.…”

Section: Introductionsupporting

confidence: 54%

“…The suspension was washed with distilled water and ethanol and dried at 120°C for 3 h. The obtained mixture was calcined at 500°C for 5 h. The as-prepared catalysts were denoted as Mn-Sb x /TiO 2 -CNTs, where x represents the total wt.% of Sb in the catalyst. The wt.% of CNTs is maintained as 10% in all the CNT-loaded catalysts as this was found to be efficient (Raja and Alphin, 2020). For comparison, the MnO x /TiO 2 catalyst without CNTs and Sb was also prepared by the same method and denoted as Mn/TiO 2 .…”

Section: Methodsmentioning

confidence: 99%

“…% of Sb in the catalyst. The wt.% of CNTs is maintained as 10% in all the CNT-loaded catalysts as this was found to be efficient (Raja and Alphin, 2020). For comparison, the MnO x /TiO 2 catalyst without CNTs and Sb was also prepared by the same method and denoted as Mn/TiO 2 .…”

Section: Catalyst Preparationmentioning

confidence: 99%

See 3 more Smart Citations

Sb-loaded MnOx/TiO₂/CNTs catalysts for selective catalytic reduction of NOx: insight to the SO₂ and H₂O tolerance

Natarajan,

S.,

et al. 2024

AEAT

View full text Add to dashboard Cite

Purpose This paper aims to synthesize and test Mn-Sb/TiO2-CNT catalysts with different Sb/Mn molar ratios to be used in NH3-SCR reaction. Design/methodology/approach A series of Sb-loaded carbon nanotubes (CNTs)-based Mn/TiO2 catalysts were prepared by the incipient wetness co-impregnation method and tested for the selective catalytic reduction (SCR) of NOx with NH3. Findings The Sb-loaded Mn/TiO2-CNTs catalyst outperformed other catalysts and presented the highest activity in the temperature regime of 100–400°C. The catalyst loaded with Sb also showed good SO2 and H2O resistance and exhibited better thermal stability. A stepwise study of SO2 addition evidenced that Mn-Sb/TiO2-CNTs catalyst exhibited better SO2 resistance than the base catalyst Mn/TiO2, where the Sb doping greatly inhibited the sulphating of active phase of the catalyst. Originality/value In Sb-loaded catalysts, the formed SOx species fused with SbOx instead of MnOx. This favoured interaction of SO2 with SbOx successfully prevents the MnOx from being sulphated by SO2 which substantially improves the SO2 tolerance of Sb-loaded catalysts.

show abstract

Section: Introductionsupporting

confidence: 65%

Section: Introductionsupporting

confidence: 54%

Section: Methodsmentioning

confidence: 99%

Section: Catalyst Preparationmentioning

confidence: 99%

See 2 more Smart Citations

Sb-loaded MnOx/TiO₂/CNTs catalysts for selective catalytic reduction of NOx: insight to the SO₂ and H₂O tolerance

Natarajan,

S.,

et al. 2024

AEAT

View full text Add to dashboard Cite

show abstract

“…20 Additionally, Cu and Sn species can be employed as active ingredients or promoters of catalysts for NH 3 -SCR de-NOx at low temperatures. 5,[21][22][23][24] For example, Cu 2+ can produce Lewis acid sites over CuO-CeO 2 -TiO 2 , which are essential for its high low-temperature activity since these active sites play an important role in ammonia activation at low temperatures in the SCR reaction. 21 Cu doping can promote the resistance of PbCl 2 poisoning over Mn-Ce/AC catalysts and hold outstanding catalytic activity at low temperatures.…”

Section: Introductionmentioning

confidence: 99%

Enhancing effect of Cu and Sn doping on low-temperature catalytic activity and operating temperature window of γ-Fe₂O₃ in NH₃-SCR of NOx

Wang,

Zhang,

Guo

et al. 2024

New J. Chem.

View full text Add to dashboard Cite

show abstract

The Properties and SCR de‐NO_x Application of Supported V₂O₅/TiO₂ Catalysts with Different Polymerization State of VO_x Species Controlled by the pH Value of Their Precursors

et al. 2020

View full text Add to dashboard Cite

NO x is the main pollutant in the air, which causes many harmful effects on society. The V 2 O 5 /TiO 2 catalysts are very important to reduce the NO x from the heat engine plants and vehicle exhausts. However, various reasons will affect the performance of the catalysts. In this paper, the polymerization state of surface VO x of supported V 2 O 5 /TiO 2 catalysts was controlled by changing the pH value of the impregnation precursor solutions, and the redox and acidity properties of the catalysts can be adjusted consequently. The Raman spectroscopy, 51 V magicangle spinning nuclear magnetic resonance (MAS NMR), H 2temperature-programmed reduction (H 2-TPR), NH 3-temperature-programmed desorption (NH 3-TPD), NH 3-temperature-programmed oxidation (TPO) and 15 NH 3-NO-O 2-temperature-programmed surface reaction (TPSR) were mainly used for the characterization and properties tests of the samples. Although all catalysts in this work had similar surface morphology and the same vanadium loading, the catalyst oxidability decreased while acidity increased with the increasing of VO x polymerization, which causes the NO conversion increases with the increasing of VO x polymerization below 300°C in selective catalytic reduction (SCR) de-NO x reaction. This work will promote the advance in catalysis and anti-pollution fields for human and nature.

show abstract

Low temperature selective catalytic reduction of NOx by NH3 over Cu modified V2O5/TiO2–carbon nanotube catalyst

Cited by 21 publications

References 51 publications

Sb-loaded MnOx/TiO₂/CNTs catalysts for selective catalytic reduction of NOx: insight to the SO₂ and H₂O tolerance

Sb-loaded MnOx/TiO₂/CNTs catalysts for selective catalytic reduction of NOx: insight to the SO₂ and H₂O tolerance

Enhancing effect of Cu and Sn doping on low-temperature catalytic activity and operating temperature window of γ-Fe₂O₃ in NH₃-SCR of NOx

The Properties and SCR de‐NO_x Application of Supported V₂O₅/TiO₂ Catalysts with Different Polymerization State of VO_x Species Controlled by the pH Value of Their Precursors

Contact Info

Product

Resources

About

Low temperature selective catalytic reduction of NOx by NH3 over Cu modified V2O5/TiO2–carbon nanotube catalyst

Cited by 21 publications

References 51 publications

Sb-loaded MnOx/TiO2/CNTs catalysts for selective catalytic reduction of NOx: insight to the SO2 and H2O tolerance

Sb-loaded MnOx/TiO2/CNTs catalysts for selective catalytic reduction of NOx: insight to the SO2 and H2O tolerance

Enhancing effect of Cu and Sn doping on low-temperature catalytic activity and operating temperature window of γ-Fe2O3 in NH3-SCR of NOx

The Properties and SCR de‐NOx Application of Supported V2O5/TiO2 Catalysts with Different Polymerization State of VOx Species Controlled by the pH Value of Their Precursors

Contact Info

Product

Resources

About

Sb-loaded MnOx/TiO₂/CNTs catalysts for selective catalytic reduction of NOx: insight to the SO₂ and H₂O tolerance

Sb-loaded MnOx/TiO₂/CNTs catalysts for selective catalytic reduction of NOx: insight to the SO₂ and H₂O tolerance

Enhancing effect of Cu and Sn doping on low-temperature catalytic activity and operating temperature window of γ-Fe₂O₃ in NH₃-SCR of NOx

The Properties and SCR de‐NO_x Application of Supported V₂O₅/TiO₂ Catalysts with Different Polymerization State of VO_x Species Controlled by the pH Value of Their Precursors