Preparations and Characterization on Fe Based Catalyst Supported on Coconut Shell Activated Carbon CS(AC) and SCR of NOx-HC

Halepoto, Adeel; Kashif, Muhammad; Su, Yaxin; Cheng, Jianghao; Deng, Wei; Zhao, Ben

doi:10.1007/s10563-020-09293-6

Cited by 16 publications

(8 citation statements)

References 59 publications

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“…60 In the literature on the preparation and application of Fe/AC, the same results were obtained, where the characteristic peaks of Fe were not detected in the XRD patterns for low Fe loading, but when the loading was large enough, the presence of Fe was detected in the form of Fe 2 O 3 . 69,70 Combined with the XPS characterization results, we concluded that Fe 2 O 3 was predominantly present in our catalyst, along with Fe carbide.…”

Section: Resultssupporting

confidence: 59%

Jet fuel-range hydrocarbon production from catalytic pyrolysis of low-density polyethylene by metal-loaded activated carbon

Pan

Wan

Zhou

et al. 2022

Sustainable Energy Fuels

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Section: Resultssupporting

confidence: 59%

Jet fuel-range hydrocarbon production from catalytic pyrolysis of low-density polyethylene by metal-loaded activated carbon

Pan

Wan

Zhou

et al. 2022

Sustainable Energy Fuels

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“…The peaks located at 1443 and 1601 cm −1 are assigned to pyridine adsorbed on Lewis (L) acid sites, while the peak centered at 1540 cm −1 is associated with pyridine adsorbed on Brønsted (B) acid sites 34 . The other peak at 1490 cm −1 is related to the pyridine co‐adsorbed on both Lewis and Brønsted acid sites 35,36 . For a better comparison, the amount of Brønsted acid sites is computed based on the peak area of 1540 cm −1 and the Lewis acid sites are evaluated based on the peak area of 1443 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

“…34 The other peak at 1490 cm −1 is related to the pyridine co-adsorbed on both Lewis and Brønsted acid sites. 35,36 For a better comparison, the amount of Brønsted acid sites is computed based on the peak area of 1540 cm −1 and the Lewis acid sites are evaluated based on the peak area of 1443 cm −1 . It is found that the B/L ratio at 150 °C is 0.22 and 0.17 for the Fe-Ce (S) and Fe(S)-Ce catalysts, respectively, and the value is 0.28 and 0.18 at 250 °C, indicating that Fe-Ce(S) contains a much higher B/L ratio than Fe(S)-Ce.…”

Section: Py-ir Analysismentioning

confidence: 99%

Enhanced catalytic activity of Fe–Ce catalysts determined by synergistic effect of different precursors in selective catalytic reduction of NOx with NH₃

Guo

Niu

Wang

et al. 2022

J of Chemical Tech & Biotech

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Background: Developing environmentally benign and non-vanadium SCR catalysts remains a challenging task for NOx abatement. In this article, Fe-Ce catalysts including Fe-Ce(S) and Fe(S)-Ce catalysts with different molar ratios of Fe/Ce were synthesized by different precursors of active species expecting to gain high catalytic activity for the selective catalytic reduction (SCR) of NOx with NH 3 in a wide temperature range.Results: The Fe-Ce(S) catalyst exhibited better catalytic activity than the Fe(S)-Ce catalyst. The characterization results indicated the Fe-Ce(S)catalyst possessed better dispersion of active species, which would favor the contact of active sites and reactant molecules and thus enhance the catalytic performance. Moreover, higher ratios of Fe 3+ and Ce 3+ and more surface chemisorbed oxygen were observed over the Fe-Ce(S) catalyst. In addition, the Fe-Ce(S) catalyst held better low-temperature redox properties and more weak acid sites.Conclusions: The precursor effect was closely related to the catalytic activity of catalysts. All of the mentioned above might be the main reasons for the superior catalytic performance of the Fe-Ce(S) catalyst, especially at low temperatures. These findings indicate that Fe-Ce(S) catalyst is a promising catalyst for the SCR reaction to replace V-W-Ti catalysts and can provide guidance for the development of environmentally benign and non-vanadium SCR catalysts.

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“…In particular, the valence state of Mn-based catalysts is variable and the redox ability is superb, which display good denitration ability. However, when the flue gas contains SO 2 and H 2 O, the denitration activity of catalysts decreases greatly [31][32][33]. For example, the actual sintering flue gas contains about 10-13% water vapor and 300-1500 mg/Nm 3 SO 2 [34].…”

Section: Introductionmentioning

confidence: 99%

Sulfur and Water Resistance of Carbon-Based Catalysts for Low-Temperature Selective Catalytic Reduction of NOx: A Review

Shen,

Ren,

Zhang

et al. 2023

Catalysts

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Low-temperature NH3-SCR is an efficient technology for NOx removal from flue gas. The carbon-based catalyst designed by using porous carbon material with great specific surface area and interconnected pores as the support to load the active components shows excellent NH3-SCR performance and has a broad application prospect. However, overcoming the poor resistance of H2O and SO2 poisoning for carbon-based catalysts remains a great challenge. Notably, reviews on the sulfur and water resistance of carbon-based low-temperature NH3-SCR catalysts have not been previously reported to the best of our knowledge. This review introduces the reaction mechanism of the NH3-SCR process and the poisoning mechanism of SO2 and H2O to carbon-based catalysts. Strategies to improve the SO2 and H2O resistance of carbon-based catalysts in recent years are summarized through the effect of support, modification, structure control, preparation methods and reaction conditions. Perspective for the further development of carbon-based catalysts in NOx low-temperature SCR is proposed. This study provides a new insight and guidance into the design of low-temperature SCR catalysts resistant to SO2 and H2O in the future.

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Preparations and Characterization on Fe Based Catalyst Supported on Coconut Shell Activated Carbon CS(AC) and SCR of NOx-HC

Cited by 16 publications

References 59 publications

Jet fuel-range hydrocarbon production from catalytic pyrolysis of low-density polyethylene by metal-loaded activated carbon

Jet fuel-range hydrocarbon production from catalytic pyrolysis of low-density polyethylene by metal-loaded activated carbon

Enhanced catalytic activity of Fe–Ce catalysts determined by synergistic effect of different precursors in selective catalytic reduction of NOx with NH₃

Sulfur and Water Resistance of Carbon-Based Catalysts for Low-Temperature Selective Catalytic Reduction of NOx: A Review

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Preparations and Characterization on Fe Based Catalyst Supported on Coconut Shell Activated Carbon CS(AC) and SCR of NOx-HC

Cited by 16 publications

References 59 publications

Jet fuel-range hydrocarbon production from catalytic pyrolysis of low-density polyethylene by metal-loaded activated carbon

Jet fuel-range hydrocarbon production from catalytic pyrolysis of low-density polyethylene by metal-loaded activated carbon

Enhanced catalytic activity of Fe–Ce catalysts determined by synergistic effect of different precursors in selective catalytic reduction of NOx with NH3

Sulfur and Water Resistance of Carbon-Based Catalysts for Low-Temperature Selective Catalytic Reduction of NOx: A Review

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Enhanced catalytic activity of Fe–Ce catalysts determined by synergistic effect of different precursors in selective catalytic reduction of NOx with NH₃