Biochar supported manganese based catalyst for low-temperature selective catalytic reduction of nitric oxide

Raja, Saur Lumban; Eshwar, D.; Natarajan, S.; Madraswala, Abdulkadir; Babu, Cadiam Mohan; Alphin, M. S.; Manigandan, S.

doi:10.1007/s10098-022-02274-5

Cited by 10 publications

(2 citation statements)

References 35 publications

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“…These low‐temperature SCR catalysts can be grouped into two main categories: supported MnO x catalysts and non‐supported MnO x catalysts 9,11 . Among these, the supported Mn‐based catalyst has excellent SCR performance and a relatively high utilization rate of active sites on the catalyst 9,12,13 . Therefore, this type of supported MnO x catalyst can greatly reduce the preparation cost, 9,12,14 which has attracted extensive attention in academia and industry.…”

Section: Introductionmentioning

confidence: 99%

Lotus leaves‐derived MnO_x/biochar as an efficient catalyst for low‐temperature NH₃‐SCR removal of NO_x: effects of modification methods of biochar

Jia

Peng

Huang

et al. 2022

J of Chemical Tech & Biotech

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In this reported work, lotus leaves‐derived biochar (LBC) was modified using various chemical methods. LBC prepared by different modification methods was used as the carrier for the development of low‐temperature selective catalytic reduction (SCR) catalysts. A comparative study of low‐temperature SCR manganese catalysts based on LBC chemically modified using NaOH, HNO3 and hexadecylcetyltrimethylammonium bromide (CTAB) was performed, revealing different deNOx performance of these catalysts. For the supported catalysts, the 25%Mn/LBC‐OH catalyst appeared to be optimum since it exhibited over 95% NOx conversion at 225 °C with a space velocity of 37 500 h−1. The microstructure, phase composition, redox properties and surface acidity were determined using field emission scanning electron microscopy, Brunauer–Emmett–Teller surface area, X‐ray diffraction, H2‐temperature‐programmed reduction, NH3‐temperature‐programmed desorption, and so forth. The results showed that the excellent SCR performance of 25%Mn/LBC‐OH was closely related to its abundant high valence Mn, suitable surface acidity and high redox capability. More importantly, highly dispersed MnOx easily formed on the surface of the LBC‐OH support, which was the key factor in the excellent catalytic activity of 25%Mn/LBC‐OH catalyst. Furthermore, the highly dispersed 25%Mn/LBC‐OH catalyst also exhibited improved tolerance to SO2 and H2O, making this catalyst a good candidate for reducing the NOx emission from coal‐fired power plants. © 2022 Society of Chemical Industry (SCI).

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Section: Introductionmentioning

confidence: 99%

Lotus leaves‐derived MnO_x/biochar as an efficient catalyst for low‐temperature NH₃‐SCR removal of NO_x: effects of modification methods of biochar

Jia

Peng

Huang

et al. 2022

J of Chemical Tech & Biotech

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“…The results obtained in this study show that the operational parameters affect the reducibility of the Co/CeO 2 and that there are synergies between these compounds. Raja et al 24 and Zhang et al 25 were able to obtain high conversion efficiencies for manganese‐based (90%) and zeolite‐based catalysts (94%), respectively. Inger al 26 has also investigated the effect of cobalt oxide and different reaction temperatures on N 2 O decomposition and catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Parametric study for N₂O conversion and reduction using cobalt‐oxide‐based catalysts

Rocha‐Meneses

Inayat

Ayoub

et al. 2022

Env Prog and Sustain Energy

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Nitrous oxide is a highly reactive gas with several well-known environmental impacts.Its presence in the atmosphere can decrease the stratospheric ozone levels, cause an increase in the greenhouse gas emissions, and contribute to acid-rain formation.Therefore, in this article, the potential and performance of different types of cobalt oxide (Co 3 O 4 ) catalysts in N 2 O decomposition and conversion was studied. For this, the catalytic activity of these materials was tested in a differential fixed-bed reactor, operated under steady state conditions. The results obtained in this study show reduced CoO achieved 100% N 2 O conversion at 250 C; that CoO has a great performance (>95%) in the absence of oxygen and humidity, regardless of the W/F; even at low space velocities (0.1 g Às /ml) and in the absence of humidity the N 2 O conversion efficiency is still very high (100%); 10%La/CoO has a higher catalytic activity than 10% Ba/CoO, 10% Na/CoO, and 10% W/CoO. The highest catalytic activity (>90%)

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Application of Biochar-Based Catalysts for Soil and Water Pollution Control

Jin,

Zhou,

et al. 2024

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Biochar supported manganese based catalyst for low-temperature selective catalytic reduction of nitric oxide

Cited by 10 publications

References 35 publications

Lotus leaves‐derived MnO_x/biochar as an efficient catalyst for low‐temperature NH₃‐SCR removal of NO_x: effects of modification methods of biochar

Lotus leaves‐derived MnO_x/biochar as an efficient catalyst for low‐temperature NH₃‐SCR removal of NO_x: effects of modification methods of biochar

Parametric study for N₂O conversion and reduction using cobalt‐oxide‐based catalysts

Application of Biochar-Based Catalysts for Soil and Water Pollution Control

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Biochar supported manganese based catalyst for low-temperature selective catalytic reduction of nitric oxide

Cited by 10 publications

References 35 publications

Lotus leaves‐derived MnOx/biochar as an efficient catalyst for low‐temperature NH3‐SCR removal of NOx: effects of modification methods of biochar

Lotus leaves‐derived MnOx/biochar as an efficient catalyst for low‐temperature NH3‐SCR removal of NOx: effects of modification methods of biochar

Parametric study for N2O conversion and reduction using cobalt‐oxide‐based catalysts

Application of Biochar-Based Catalysts for Soil and Water Pollution Control

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Lotus leaves‐derived MnO_x/biochar as an efficient catalyst for low‐temperature NH₃‐SCR removal of NO_x: effects of modification methods of biochar

Lotus leaves‐derived MnO_x/biochar as an efficient catalyst for low‐temperature NH₃‐SCR removal of NO_x: effects of modification methods of biochar

Parametric study for N₂O conversion and reduction using cobalt‐oxide‐based catalysts