Nitrogen doping in porous biochar from cotton stalk with H3PO4 activation for reduction of NOx with NH3-SCR at low temperatures: Characteristics and catalytic activity analysis

Liu, Shanjian; Feng, Xiangdong; Liu, Zhuwei; Zhao, Wenjing; Li, Yongjun; Zhang, Jiawen

doi:10.1016/j.fuel.2022.126256

Cited by 20 publications

(3 citation statements)

References 36 publications

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“…33 Opportunely, defects in carbon materials were considered to be active sites in electrochemical reactions and thus promoted the enhancement of catalytic performance of the electrocatalyst. [34][35] X-ray photoelectron spectroscopy (XPS) spectrum of S/N-DSPC (Fig. 3) con rms the presence of C, N and S elements.…”

Section: Resultsmentioning

confidence: 88%

Facility Green Electrocatalyst: Sulfur-Modified N-Doped Durian Shell Derived Graphene-like Porous Carbon for N2 Fixation

Wang,

Liu,

Liu

et al. 2024

J Inorg Organomet Polym

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Undoubtedly, electrochemical ammonia synthesis without carbon footprint will be an anticipated alternative to the Haber-Bosch N 2 -xation process which is energy-intensive. Herein, the durian shell derived carbon was designed as the electrocatalyst precursor, and its graphene-like morphology features and unique hierarchic pore structure obtained by controlling calcination condition was used to trap the N 2 molecules rmly and convert them. Furthermore, the NH 3 synthesis properties with N, S doping and codoped were systematically tested. Detailed investigations shown the synergistic effect brought by N and S atom double doping strategy was e cient promote the increase of electrochemical active sites and thus enhanced the electrocatalytic performance. The NH 3 yield of 32.05 µg NH3 mg cat . −1 h − 1 was obtained by double-doped strategy, which enriched the application of biomass derived carbon materials.

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Section: Resultsmentioning

confidence: 88%

Facility Green Electrocatalyst: Sulfur-Modified N-Doped Durian Shell Derived Graphene-like Porous Carbon for N2 Fixation

Wang,

Liu,

Liu

et al. 2024

J Inorg Organomet Polym

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“…O 2 decomposition generates O atoms that occupy oxygen vacancies, resulting in the formation of surface O atoms on the catalyst, thereby completing the re-oxidation process and forming a closed catalytic reaction cycle. 56,57 NO(g) + O(a) → NO 2 (a)2NH 3 (a) + NO 2 (a) + NO(g) → 2N 2 + 3H 2 O…”

Section: Resultsmentioning

confidence: 99%

In situ construction of halogen MOF bifunctional catalysts for synergistic removal of NO and Hg⁰

Hao,

Jiaju,

Yuling

et al. 2024

React. Chem. Eng.

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“…Thus, to avoid heating of the flue gases downstream of the ESP unit and therefore limit operation costs of such installation, effective NH 3 -SCR catalysts operating at temperature below 250 °C is necessary. Low-temperature activity in the NH 3 -SCR has been reported for various catalyst systems, including char-based materials [5,6,7] and zeolites modified with transition metals. [8,9,10] To transition metals catalytically active in the low-temperature reduction of nitrogen oxides belong, among others, copper [9,11,12] and manganese, [13,14,15] used as main catalytically active components or in combinations with other metals, e. g., Cu-Fe, [16] Cu-Ce, [17] Mn-Ce, [18] Mn-Co. [19] Catalytic performance of the NH 3 -SCR catalysts strongly depends on the form and aggregation of catalytically active transition metal species as well as properties of the used catalytic support, such as surface acidity [20] or porosity.…”

Section: Introductionmentioning

confidence: 99%

Studies of NO Reduction with Ammonia Over Copper Species Deposited on MCM‐41 Nanospheres ‐ Experimental Evidence of Reaction Mechanism

et al. 2023

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Nanospheres of MCM-41 were modified with copper by template ion-exchange (TIE) and cocondensation methods. In the samples modified by TIE, dispersion of copper was significantly improved by their post-treatment in ammonia solutions. Highly dispersed copper species were significantly more active in low-temperature NH 3 -SCR than CuO aggregates. Copper dispersed on silica MCM-41 catalytically operated at lower temperatures than copper deposited on silica-alumina MCM-41. The studies of reaction mechanism showed that ammonia and NO x species compete for these same adsorption sites (copper cations) and NH 3 can remove NO x from such sites. Dispersed copper species are more active in NO to NO 2 oxidation than CuO aggregates. Accumulation of oxidised NO x species in the absence of ammonia was more privileged on CuO aggregates. It is postulated that the main reaction pathway in the lowtemperature range is reaction of ammonia bounded to copper with NO x from gas phase or loosely bounded to the catalyst surface.

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Nitrogen doping in porous biochar from cotton stalk with H3PO4 activation for reduction of NOx with NH3-SCR at low temperatures: Characteristics and catalytic activity analysis

Cited by 20 publications

References 36 publications

Facility Green Electrocatalyst: Sulfur-Modified N-Doped Durian Shell Derived Graphene-like Porous Carbon for N2 Fixation

Facility Green Electrocatalyst: Sulfur-Modified N-Doped Durian Shell Derived Graphene-like Porous Carbon for N2 Fixation

In situ construction of halogen MOF bifunctional catalysts for synergistic removal of NO and Hg⁰

Studies of NO Reduction with Ammonia Over Copper Species Deposited on MCM‐41 Nanospheres ‐ Experimental Evidence of Reaction Mechanism

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Nitrogen doping in porous biochar from cotton stalk with H3PO4 activation for reduction of NOx with NH3-SCR at low temperatures: Characteristics and catalytic activity analysis

Cited by 20 publications

References 36 publications

Facility Green Electrocatalyst: Sulfur-Modified N-Doped Durian Shell Derived Graphene-like Porous Carbon for N2 Fixation

Facility Green Electrocatalyst: Sulfur-Modified N-Doped Durian Shell Derived Graphene-like Porous Carbon for N2 Fixation

In situ construction of halogen MOF bifunctional catalysts for synergistic removal of NO and Hg0

Studies of NO Reduction with Ammonia Over Copper Species Deposited on MCM‐41 Nanospheres ‐ Experimental Evidence of Reaction Mechanism

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Product

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In situ construction of halogen MOF bifunctional catalysts for synergistic removal of NO and Hg⁰