Two-dimensional vermiculite carried CuCoCe catalysts for CO-SCR in the presence of O2 and H2O: Experimental and DFT calculation

Liu, Zhisong; Ye, Feng; Pan, Keke; Zhou, Xia; Sun, Ruobing; Tian, Junqi; Wan, Yinji; Dan, Jianming; Dai, Bin

doi:10.1016/j.cej.2021.130099

Cited by 63 publications

(35 citation statements)

References 56 publications

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“…This may be caused by the uneven dispersion of CuO and CeO 2 on the VMT surface and the occurrence of clusters. This corresponds to the TEM analysis result 20. Fig.…”

supporting

confidence: 80%

“…This corresponds to the TEM analysis result. 20 removal at this temperature -the highest removal rate. Fig.…”

Section: Catalyst Performance Analysismentioning

confidence: 85%

“…1 also show that Cu and Ce species are uniformly dispersed on the CuCe/VMT(M) support surface, thereby significantly improving the catalytic performance. 17–20…”

Section: Resultsmentioning

confidence: 99%

“…This corresponds to the TEM analysis result. 20 Fig. 6(b) shows the CO conversion rates of the four catalysts.…”

Section: Resultsmentioning

confidence: 99%

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CuCeO_x/VMT powder and monolithic catalyst for CO-selective catalytic reduction of NO with CO

Liu

et al. 2022

New J. Chem.

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“…This may be caused by the uneven dispersion of CuO and CeO 2 on the VMT surface and the occurrence of clusters. This corresponds to the TEM analysis result 20. Fig.…”

supporting

confidence: 80%

“…This corresponds to the TEM analysis result. 20 removal at this temperature -the highest removal rate. Fig.…”

Section: Catalyst Performance Analysismentioning

confidence: 85%

See 2 more Smart Citations

CuCeO_x/VMT powder and monolithic catalyst for CO-selective catalytic reduction of NO with CO

Liu

et al. 2022

New J. Chem.

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“…The computational energy, structural optimization, and transition state search are analyzed in the framework of Perdew–Burke–Ernzerhof (PBE) generalized gradient approximation (GGA). The pseudo-Dojo pseudo-potential of the Gaussian code and planewave are realized . We used the DFT + U method to describe the electron localization on the 4f state of the reduced cerium atom.…”

Section: Methodsmentioning

confidence: 99%

The Unique CO Activation Effects for Boosting NH₃ Selective Catalytic Oxidation over CuO_x–CeO₂

Liao

Liu

et al. 2022

Environ. Sci. Technol.

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Slip NH3 is a priority pollutant of concern to be removed in various flue gases with NO x and CO after denitrification using NH3-SCR or NH3-SNCR, and the simultaneous catalytic removal of NH3 and CO has become one of the new topics in the deep treatment of such flue gases. Synergistic catalytic oxidation of CO and NH3 appears to be a promising method but still has many challenges. Due to the competition for active oxidizing species, CO was supposed to hinder the NH3 selective catalytic oxidation (NH3-SCO). However, it is first found that CO could significantly promote NH3-SCO over the CuO x –CeO2 catalyst. The NH3 conversion rates increased linearly with CO concentrations in the range of 180–300 °C. Specifically, it accelerated by 2.8 times with 10,000 ppm CO inflow at 220 °C. Mechanism studies found that the Cu–O–Ce solid solution was more active for CO oxidation, while the CuO x species facilitated the NH3 dehydrogenation and mitigated the competition of NH3 and CO, further stabilizing the promotion effects. Gaseous CO boosted the generation of active isolated oxygen atoms (Oi) by actuating the Cu+/Cu2+ redox cycle. The enriched Oi facilitated oxidation of NH3 to NO and was conducive to the NH3-SCO via the i-SCR approach. This study tapped the potential of CO for promoting simultaneous catalytic oxidation of coexisting pollutants in the flue gas.

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Stability challenges and prospects for the industrial application of non‐noble catalysts for selective catalytic reduction of NO_x by CO (CO‐SCR)

Li,

Wang,

et al. 2024

ChemCatChem

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The selective catalytic reduction of NOx by CO (CO‐SCR) holds considerable promise as a simple and cost‐effective technology capable of concurrently removing CO and NOx from mobile and stationary sources. This is especially pertinent for industry sectors with high CO emissions, such as the iron and steel industry, making CO‐SCR an attractive solution with significant industrial applicability. However, the widespread adoption of this technology faces several limiting factors, of which the impacts of SO2, H2O, and O2 on catalyst performance and stability are most pronounced. Current research into these specific constraints is not yet exhaustive, rendering the comprehensive industrial implementation of CO‐SCR technology a challenging endeavour. As such, this review paper seeks to concentrate on variables that impede the industrial utilization of CO‐SCR technology. It encapsulates the existing bottlenecks and underscores the criticality of resolving the inhibitory effects of O2 on the CO‐SCR reaction as the most pressing issue in contemporary research.

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Two-dimensional vermiculite carried CuCoCe catalysts for CO-SCR in the presence of O2 and H2O: Experimental and DFT calculation

Cited by 63 publications

References 56 publications

CuCeO_x/VMT powder and monolithic catalyst for CO-selective catalytic reduction of NO with CO

CuCeO_x/VMT powder and monolithic catalyst for CO-selective catalytic reduction of NO with CO

The Unique CO Activation Effects for Boosting NH₃ Selective Catalytic Oxidation over CuO_x–CeO₂

Stability challenges and prospects for the industrial application of non‐noble catalysts for selective catalytic reduction of NO_x by CO (CO‐SCR)

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Two-dimensional vermiculite carried CuCoCe catalysts for CO-SCR in the presence of O2 and H2O: Experimental and DFT calculation

Cited by 63 publications

References 56 publications

CuCeOx/VMT powder and monolithic catalyst for CO-selective catalytic reduction of NO with CO

CuCeOx/VMT powder and monolithic catalyst for CO-selective catalytic reduction of NO with CO

The Unique CO Activation Effects for Boosting NH3 Selective Catalytic Oxidation over CuOx–CeO2

Stability challenges and prospects for the industrial application of non‐noble catalysts for selective catalytic reduction of NOx by CO (CO‐SCR)

Contact Info

Product

Resources

About

CuCeO_x/VMT powder and monolithic catalyst for CO-selective catalytic reduction of NO with CO

CuCeO_x/VMT powder and monolithic catalyst for CO-selective catalytic reduction of NO with CO

The Unique CO Activation Effects for Boosting NH₃ Selective Catalytic Oxidation over CuO_x–CeO₂

Stability challenges and prospects for the industrial application of non‐noble catalysts for selective catalytic reduction of NO_x by CO (CO‐SCR)