Recent Advances in Catalytic Decomposition of N2O on Noble Metal and Metal Oxide Catalysts

Liu, Zhiming; He, Fang; Ma, Lingling; Peng, Sha

doi:10.1007/s10563-016-9213-y

Cited by 57 publications

(30 citation statements)

References 75 publications

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“…Table summarizes examples of the catalyst compositions, their preparation methods, reaction conditions and catalytic activities, including the light‐off temperature (T 50 ) together with the influence of the various inhibitors (e. g., O 2 , NO or H 2 O). The outstanding low‐temperature deN 2 O activity of metal oxides, spinel‐type oxides and alkali‐doped oxides was widely reported . Ceria‐based materials (CuO−CeO 2 , K/Co−CeO 2 ) are of interest because of their oxygen storage capacity, which strongly affects the oxidation state of introduced metal cations.…”

Section: Resultsmentioning

confidence: 99%

“…The outstanding low-temperature deN 2 O activity of metal oxides, spinel-type oxides and alkali-doped oxides was widely reported. [11,17,68] Ceria-based materials (CuOÀ CeO 2 , K/CoÀ CeO 2 ) are of interest because of their oxygen storage capacity, which strongly affects the oxidation state of introduced metal cations. CuOÀ CeO 2 or CuO/ CeO 2 exhibited T 50 values in range of 370-440°C depending on the preparation method, Cu loading and reaction conditions.…”

Section: Full Papersmentioning

confidence: 99%

“…Compared to other routes for N 2 O removal, i. e., utilization of N 2 O in the selective catalytic oxidation or reduction with additional reactants, the direct N 2 O decomposition constitutes the most appropriate solution to abate nitric oxide from the industrial sources due to its simplicity . A great number of active catalytic systems have been reported for deN 2 O, including zeolites, hexaaluminates, perovskites, spinels, hydrotalcite derived mixed metal oxides, etc., and they are summarized in recent reviews . Among others, high activity in N 2 O decomposition were reported over Cu‐ and/or Co‐containing hydrotalcite derived mixed metal oxides.…”

Section: Introductionmentioning

confidence: 99%

“…[4] A great number of active catalytic systems have been reported for deN 2 O, including zeolites, [5,6] hexaaluminates, [7,8] perovskites, [9,10] spinels, [11][12][13][14] hydrotalcite derived mixed metal oxides, [13,14] etc., and they are summarized in recent reviews. [2][3][4]17,18] Among others, high activity in N 2 O decomposition were reported over Cu-and/or Co-containing hydrotalcite derived mixed metal oxides. For example, Kannan [19] investigated CuÀ Al, NiÀ Al and CoÀ Al (M/Al = 3/1, mol.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Neodymium on the Physico‐chemical Properties and N₂O Decomposition Activity of Co(Cu)−Al Mixed Oxides

Jabłońska

Nocuń

et al. 2019

ChemCatChem

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Cu−Al and Co−Al (M/Al=0.8/0.2, molar ratio; M=Cu or Co) mixed metal oxides showed a moderate activity in N2O decomposition (deN2O) with full conversion at about 500–550 °C. Addition of Nd modified the physico‐chemical and catalytic properties of both Cu−Al and Co−Al materials, though an optimal Nd loading was required. The addition of Nd in Cu0.8Al0.2 and Co0.8Al0.2 with Nd/Co(Cu)/Al = 0.5/0.8/0.2 molar ratio, improved significantly their catalytic activity. In particular, the temperatures needed for full N2O conversion were 100 °C lower than those of the bare materials. Furthermore, the most active Nd0.5Co0.8Al0.2 catalyst exhibited a stable 60 % N2O conversion at 450 °C for 50 h in presence of NO (200 ppm), O2 (20,000 ppm) and H2O (2500 ppm). The enhancement in the activity of both Cu‐ and Co‐containing materials was related to the formation of CuNd2O4 for Nd0.5Cu0.8Al0.2 and NdCoO3 for Nd0.5Co0.8Al0.2. The presence of CuNd2O4 or NdCoO3 accounted for changes in redox properties, e. g., easier reduction or faster release of oxygen, and in turn an increased catalyst activity in deN2O. The investigation of rare earth‐based catalysts for deN2O is limited in the scientific literature, while a comprehensive understanding of the involved active species may facilitate a knowledge‐based catalyst optimization.

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Section: Resultsmentioning

confidence: 99%

Section: Full Papersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Neodymium on the Physico‐chemical Properties and N₂O Decomposition Activity of Co(Cu)−Al Mixed Oxides

Jabłońska

Nocuń

et al. 2019

ChemCatChem

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“…Os óxidos de metais de transição apresentam baixo custo, estabilidade térmica e atividade significativa na de-N 2 O. Entretanto, a atividade dos metais de transição é afetada na presença de outros compostos, como: CO 2 , CH 4 , O 2 e H 2 O, comumente encontrados na composição dos gases de efluentes industriais [13,14]. Especulações do mecanismo de envenenamento desses gases copresentes têm sido propostos, mas ainda é necessário compreender totalmente os mecanismos usando combinação de técnicas experimentais [14].…”

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Estudo do desempenho catalítico das zeólitas Beta e ZSM-5 contendo ferro para decomposição de óxido nitroso

Moura

Batista

2017

Matéria (Rio J.)

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RESUMOCatalisadores Fe-ZSM-5 tem mostrado alta atividade para decomposição de N 2 O (de-N 2 O), mas poucos trabalhos apresentam o seu desempenho junto com gases que coexistem nas emissões (CO 2 Palavras-chave: óxido nitroso, catalisador, Fe-ZSM-5, Fe-BETA. ABSTRACTFe-ZSM-5 catalysts has shown high activity for decomposition of N 2 O (de-N 2 O), but few works show their performance with coexisting gas emissions (CO 2 , CH 4 , O 2 and H 2 O). Recently, Fe-BETA presented N 2 O conversion more high than Fe-ZSM-5, however, the activity of these catalysts still needs to compare in real conditions. This work aims to study the performance of Fe-BETA, Fe-ZSM-5 and Fe 2 O 3 in the de-N 2 O with addition of gases present in real conditions. For this, Fe-BETA (prepared by ion exchange), Fe-ZSM-5 and Fe 2 O 3 catalysts were calcined, characterized by XRF, XRD and H 2 -TPR and, evaluated in the N 2 O decomposition in the presence of CO 2 , CH 4 , O 2 and H 2 O. The results showed the presence of iron oxide on surface and iron ions compensating load in the structure of the zeolites. The N 2 O conversion increased with increasing reaction temperature and the Fe-ZSM-5 and Fe-BETA catalysts were much more active than Fe 2 O 3 pure. These results show that the iron species in the exchange position of zeolites are the most active for the reaction of N 2 O decomposition. The Fe-ZSM-5 and Fe-BETA catalysts showed high activity (> 90%) and resistance in the presence of CO 2 , CH 4 , O 2 and H 2 O. Fe-BETA was more selective the reaction of decomposition of N 2 O and showed great potential for the reduction of N 2 O emissions in real conditions.

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Photoaktivierung von Cerdioxid: die Rolle von Defekten

Yang

Pleßow

et al. 2017

Angewandte Chemie

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Die Photoreaktivität von Cerdioxid, einem photochemisch inaktiven Oxid mit großer Bandlücke, lässt sich durch die Erzeugung von O‐Leerstellen deutlich steigern. Zur Klärung des Mechanismus wurde die UV‐induzierte Zersetzung von N2O an Einkristall‐Modellsystemen dieses Materials mithilfe von IRRAS untersucht. In Verbindung mit theoretischen Erkenntnissen bestätigen die IRRAS‐Daten, dass eine Reduzierung der Cerdioxid‐(110)‐Oberfläche zu einer hohen Photoreaktivität führt. An der (111)‐Oberfläche sind dagegen keine solchen Effekte zu beobachten. Der Tieftemperatur‐Photoabbau von N2O erfolgt hauptsächlich an O‐Leerstellen an der (110)‐Oberfläche. An diesen Defekten verkleinern die elektronenreichen Cerkationen die große Bandlücke (ca. 6 eV) lokal erheblich. Die Quanteneffizienz der stark reduzierten (110)‐Oberflächen von Cerdioxid beim Photoabbau von N2O ist erstaunlich hoch. Der Wert von 0.03 % ist vergleichbar mit dem Wirkungsgrad, der für die Photooxidation von CO an Rutil‐Titandioxid‐(110) beobachtet wurde.

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Recent Advances in Catalytic Decomposition of N2O on Noble Metal and Metal Oxide Catalysts

Cited by 57 publications

References 75 publications

Effect of Neodymium on the Physico‐chemical Properties and N₂O Decomposition Activity of Co(Cu)−Al Mixed Oxides

Effect of Neodymium on the Physico‐chemical Properties and N₂O Decomposition Activity of Co(Cu)−Al Mixed Oxides

Estudo do desempenho catalítico das zeólitas Beta e ZSM-5 contendo ferro para decomposição de óxido nitroso

Photoaktivierung von Cerdioxid: die Rolle von Defekten

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Recent Advances in Catalytic Decomposition of N2O on Noble Metal and Metal Oxide Catalysts

Cited by 57 publications

References 75 publications

Effect of Neodymium on the Physico‐chemical Properties and N2O Decomposition Activity of Co(Cu)−Al Mixed Oxides

Effect of Neodymium on the Physico‐chemical Properties and N2O Decomposition Activity of Co(Cu)−Al Mixed Oxides

Estudo do desempenho catalítico das zeólitas Beta e ZSM-5 contendo ferro para decomposição de óxido nitroso

Photoaktivierung von Cerdioxid: die Rolle von Defekten

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Effect of Neodymium on the Physico‐chemical Properties and N₂O Decomposition Activity of Co(Cu)−Al Mixed Oxides

Effect of Neodymium on the Physico‐chemical Properties and N₂O Decomposition Activity of Co(Cu)−Al Mixed Oxides