Vanadium-based catalytic fibers for selective reduction of NO by NH3 and their potential use on co-processing of dust and NOx

Cheng, Jiafan; Li, Weiman; Wang, Xiaoze; Liu, Haidi; Chen, Yunfa

doi:10.1016/j.cej.2021.133694

Cited by 11 publications

(7 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…NO, as an important air pollutant, was one of the contributors to acid rain and photochemical smog. 1,2 Selective catalytic reduction of NO with NH 3 (NH 3 -SCR) is widely used in large coal-fired power plants and diesel vehicles to obtain harmless N 2 and H 2 O. 3−5 Basically, the NH 3 -SCR process includes the redox cycle and the acid cycle.…”

Section: Introductionmentioning

confidence: 99%

“…NO, as an important air pollutant, was one of the contributors to acid rain and photochemical smog. , Selective catalytic reduction of NO with NH 3 (NH 3 -SCR) is widely used in large coal-fired power plants and diesel vehicles to obtain harmless N 2 and H 2 O. – Basically, the NH 3 -SCR process includes the redox cycle and the acid cycle . CeO 2 has received much attention because of its large number of surface oxygen vacancies and reactive oxygen species. – What is more, the fast conversion between Ce 3+ and Ce 4+ , corresponding to superior oxygen release capacity and redox performance, accelerates the redox cycle of the NH 3 -SCR process .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modification Effect of Pt on the Active Sites of Sulfated CeO₂ Nanorods for the Selective Catalytic Reduction of NO

Fan,

Yang,

Yang

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Although the surface acidity of CeO2 has been increased by H2SO4 to increase its acid sites, the low-temperature (<250 °C) activity of sulfated CeO2 catalysts still needs to be improved. In this study, a Pt-modified CeO2 catalyst was prepared by impregnation or reduction methods to increase its catalytic activity. The results showed the Pt-modified CeO2 catalyst significantly widened its low-temperature catalytic window. The NO conversion and N2 selectivity of the Pt1.0%/SCe-I sample were both more than 90% at 200–350 °C because of its numerous acid sites, excellent redox ability, and higher Pt2+ content. NH3, NH4+, –NH2, and bridging nitrates and monodentate nitrates on the Pt1.0%/SCe-I catalyst surface acted as the active substances. Among them, coordinated NH3 at the Lewis acid sites reacted first. This study highlights the interactions among metals, sulfates, and carriers and supplies a useful method to improve the low-temperature activity of sulfated CeO2.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modification Effect of Pt on the Active Sites of Sulfated CeO₂ Nanorods for the Selective Catalytic Reduction of NO

Fan,

Yang,

Yang

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…Nitric oxide (NO), a notable air pollutant, is involved in both acid rain and photochemical smog. 1,2 The selective catalytic reduction of NO with ammonia (NH 3 -SCR) is a technique that is extensively used in large coal-fired power plants and diesel vehicles to produce harmless nitrogen (N 2 ) and water (H 2 O). [3][4][5] This technique integrates both redox and acid cycles.…”

Section: Introductionmentioning

confidence: 99%

Insights into the effects of Mn and Ni on Pt-modified sulfated CeO₂ catalysts for NO removal

Fan,

Peng,

Shen

et al. 2023

New J. Chem.

View full text Add to dashboard Cite

show abstract

“…24,25 While the simultaneous oxidation of NO and toluene offers advantages, the treatment of PM 2.5 is typically handled as a separate process. 26 Implementing simultaneous and efficient treatment of PM 2.5 , NO, and toluene presents several benefits, including streamlining the treatment process and reducing energy consumption. Nevertheless, practical fabrication of such multifunctional materials for simultaneous air treatment remains highly challenging.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, in complex emission environments, such as those involving the presence of PM 2.5 , the contact and mass transfer of NO and toluene can be hindered, adding complexity to the treatment process and the risk of catalytic active site poisoning 24,25 . While the simultaneous oxidation of NO and toluene offers advantages, the treatment of PM 2.5 is typically handled as a separate process 26 . Implementing simultaneous and efficient treatment of PM 2.5 , NO, and toluene presents several benefits, including streamlining the treatment process and reducing energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Preparation of asymmetric tubular Co‐SiC catalytic membrane for synergistic removal of PM₂_.5, NO, and toluene

Chen,

Yin,

Tan

et al. 2023

AIChE Journal

View full text Add to dashboard Cite

SiC catalytic membranes exhibit remarkable promise in controlling of dust and atmospheric pollutant emissions. However, their fabrication is limited to small‐scale production, with dimensions up to a disc of 30 mm in diameter. Scaling up the fabrication to tubular SiC catalytic membranes without compromising their application performance remains a challenge due to uncontrollable structural defects during processing. Herein, a tubular Co‐SiC (TCS) catalytic membrane was fabricated through a combination of cold‐isostatic‐pressure molding, spin spray‐coating and acid‐treating processes. The TCS catalytic membrane shows high filtration efficiencies toward industrial‐PM2.5 concentrations. A competitive reaction between NO and toluene was observed on TCS catalytic membrane, and the toluene oxidation is prioritized at low temperatures. In a 52 h stability test, the TCS catalytic membrane achieved PM2.5, NO, and toluene removal efficiencies of 98.92%, 70%, and 100%, respectively. This study lays the foundation for the practical implementation of SiC catalytic membranes in industrial emissions treatment.

show abstract

Vanadium-based catalytic fibers for selective reduction of NO by NH3 and their potential use on co-processing of dust and NOx

Cited by 11 publications

References 61 publications

Modification Effect of Pt on the Active Sites of Sulfated CeO₂ Nanorods for the Selective Catalytic Reduction of NO

Modification Effect of Pt on the Active Sites of Sulfated CeO₂ Nanorods for the Selective Catalytic Reduction of NO

Insights into the effects of Mn and Ni on Pt-modified sulfated CeO₂ catalysts for NO removal

Preparation of asymmetric tubular Co‐SiC catalytic membrane for synergistic removal of PM₂_.5, NO, and toluene

Contact Info

Product

Resources

About

Vanadium-based catalytic fibers for selective reduction of NO by NH3 and their potential use on co-processing of dust and NOx

Cited by 11 publications

References 61 publications

Modification Effect of Pt on the Active Sites of Sulfated CeO2 Nanorods for the Selective Catalytic Reduction of NO

Modification Effect of Pt on the Active Sites of Sulfated CeO2 Nanorods for the Selective Catalytic Reduction of NO

Insights into the effects of Mn and Ni on Pt-modified sulfated CeO2 catalysts for NO removal

Preparation of asymmetric tubular Co‐SiC catalytic membrane for synergistic removal of PM2.5, NO, and toluene

Contact Info

Product

Resources

About

Modification Effect of Pt on the Active Sites of Sulfated CeO₂ Nanorods for the Selective Catalytic Reduction of NO

Modification Effect of Pt on the Active Sites of Sulfated CeO₂ Nanorods for the Selective Catalytic Reduction of NO

Insights into the effects of Mn and Ni on Pt-modified sulfated CeO₂ catalysts for NO removal

Preparation of asymmetric tubular Co‐SiC catalytic membrane for synergistic removal of PM₂_.5, NO, and toluene