Catalysts Cu/ZSM-5 for N2O decomposition obtained with copper complexes of various structures

Зенковец, Г. А.; Shutilov, R. A.; Соболев, В. И.; Gavrilov, V. Yu.

doi:10.1016/j.catcom.2020.106072

Cited by 8 publications

(8 citation statements)

References 27 publications

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“…It has been reported that addition of ammonia as a reductant into the reaction gas has promoting effect on decomposition of N 2 O. [43][44][45][46] We confirmed the effect on decomposition of N 2 O over copper supported A3NN catalysts. Figure 6 showed temperature dependence of conversion of N 2 O.…”

Section: Chemistryselectmentioning

confidence: 99%

Decomposition of Nitrous Oxide using a Copper‐supported Shirasu Catalyst

Umegaki

Noguchi

Fukumoto³

2022

ChemistrySelect

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This work firstly reported catalytic activity of copper species supported on Shirasu-based materials for decomposition of nitrous oxide. From the results of EDS and XPS analyses, the bulk and surface compositions of the supported copper species depends on its impregnation conditions. The copper species were preferably supported on the surface silica sites of the Shirasu-based materials with addition of ammonia during the impregnation process, and the amount of the copper species increased with increasing the amount of ammonia. The catalysts with the active copper species preferably supported on the silica sites exhibited high activity for decomposition of nitrous oxide. The catalytic activity also depended on the kinds of Shirasu-based materials, and the copper-supported catalyst on a Shirasu balloon, A3NN, showed the highest activity. The catalytic activity improved with addition of ammonia into the feed reactant gas, and nitrous oxide in the mixed gas was completely decomposed above 673 K.

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Section: Chemistryselectmentioning

confidence: 99%

Decomposition of Nitrous Oxide using a Copper‐supported Shirasu Catalyst

Umegaki

Noguchi

Fukumoto³

2022

ChemistrySelect

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“…Considering the environmental side-effects, economic cost, and universality of application fields, catalytic decomposition is the most promising strategy for complete degradation of N 2 O. ,− Noble metal catalysts, zeolite catalysts, and transition metal catalysts are well-explored catalysts that exhibit excellent performance for the catalytic decomposition of N 2 O. − Among these catalysts, low-cost and efficient transition metal catalysts provide the possibility of industrial scale-up production. In addition, multiple strategies, such as structural recombination, element doping, morphology regulation, and induction of crystal plane orientation growth, could ulteriorly implement optimization to suit practical application. − …”

Section: Introductionmentioning

confidence: 99%

Enhancement of Cs on Co₃O₄ for N₂O Catalytic Decomposition: N₂O Activation and O₂ Desorption

Zhao

Wang

et al. 2022

Ind. Eng. Chem. Res.

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In this work, a series of cesium (Cs) modified metal oxide (Co3O4, CuO, Mn2O3, and NiO) catalysts were synthesized and investigated for N2O catalytic decomposition. More than 95% N2O conversion was obtained with the Cs-supported Co3O4 (Cs/Co) catalyst at 300 °C, but only a slight increase or even suppression was obtained with the other catalysts. The activation energy (E a) varied significantly for Cs modified catalysts. It was found that both of N2O adsorption–dissociation (from N2O-TPD) and O2 desorption capacities (from O2-TPD) were highly correlated with the N2O decomposition activity. Highly optimized N2O activation and O2 desorption capacities contributed to the boosting performance of the Cs/Co catalyst. Moreover, the improved electron transfer property inferred from H2-temperature-programmed reduction and X-ray photoelectron spectroscopy was likely to facilitate the reaction processes and promote N2O catalytic decomposition performance.

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“…N 2 O is a chemically stable and kinetically inert molecule [16], its deoxygenation reaction remains difficult, as even thermal decomposition is limited by a high kinetic barrier despite being thermodynamically favorable [14, 17, 18]. According to the previous reports, most of the degradation of N 2 O relied on metal catalysts, such as Mn, Fe, Co, Ni, Cu, Bi, Ru, Re [19–32]. However, those metals exist obvious weaknesses more or less, such as the complicated ligand preparation process, the harsh reaction conditions, rare and expensive, or the low selectivity from the abundant metals [33, 34].…”

Section: Introductionmentioning

confidence: 99%

Deoxygenation reactions of nitrous oxide assisted by oriented external electric field

Zhang,

Li,

Lei

et al. 2024

Int J of Quantum Chemistry

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Due largely to the high stability and the potential ozone‐depleting, the transformation of greenhouse gas nitrous oxide has gained much attentions. In present paper, a new insight into the deoxygenation of nitrous oxide with silane was reported by using oriented external electric field (OEEF) as a catalytic strategy. When the OEEF was employed, the reaction barrier of deoxygenation was marvelously decreased as it was oriented along the positive NO/OSi bond‐axis. Especially the field strength is 300 × 10−4 a.u., the differences are up to 22.4/18.3 kcal mol−1 as compared with that of nonfield. In addition, once the H atom in SiH4 was replaced by methyl, two reaction modes were obtained, in which the deoxygenation process was easier when the N2O captured the H atom attached to the Si atom, not attached to the C atom. Further, the solvent effects of deoxygenation reaction were also considered, but with a weak influence were obtained.

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Catalysts Cu/ZSM-5 for N2O decomposition obtained with copper complexes of various structures

Cited by 8 publications

References 27 publications

Decomposition of Nitrous Oxide using a Copper‐supported Shirasu Catalyst

Decomposition of Nitrous Oxide using a Copper‐supported Shirasu Catalyst

Enhancement of Cs on Co₃O₄ for N₂O Catalytic Decomposition: N₂O Activation and O₂ Desorption

Deoxygenation reactions of nitrous oxide assisted by oriented external electric field

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Catalysts Cu/ZSM-5 for N2O decomposition obtained with copper complexes of various structures

Cited by 8 publications

References 27 publications

Decomposition of Nitrous Oxide using a Copper‐supported Shirasu Catalyst

Decomposition of Nitrous Oxide using a Copper‐supported Shirasu Catalyst

Enhancement of Cs on Co3O4 for N2O Catalytic Decomposition: N2O Activation and O2 Desorption

Deoxygenation reactions of nitrous oxide assisted by oriented external electric field

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Enhancement of Cs on Co₃O₄ for N₂O Catalytic Decomposition: N₂O Activation and O₂ Desorption