Total oxidation of naphthalene using bulk manganese oxide catalysts

Garcı́a, Tomás; Sellick, David Richard; Rodríguez-Varela, F.J.; Vázquez, Isaac Amigo; Dejoz, Ana; Agouram, Saïd; Taylor, Stuart Hamilton; Solsona, Benjamín

doi:10.1016/j.apcata.2012.10.029

Cited by 51 publications

(30 citation statements)

References 41 publications

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“…25 Among them, catalytic combustion is the most promising for the removal of PAHs from polluted air streams, due to its lower operating temperature and higher selectivity towards CO 2 [2]. For catalytic total oxidation, the types of catalysts used are based to a large extent on metals such as Pd, Pt, Ru or Co supported on 30 γ-alumina by impregnation [14], metal oxide catalysts [2,[15][16][17][18][19], mesoporous aluminosilicates with supported Pt [20] or the use of zeolites ion-exchanged with Pt [21]. Based on our previous studies [22], the use of polymer protected Pd nanoparticles supported on zeolites is one of the most promising types of 35 catalyst for the total oxidation of naphthalene, due to the low oxidation temperature reported (165-180ºC), and the high stability of the catalyst.…”

Section: Introductionmentioning

confidence: 99%

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Total oxidation of naphthalene at low temperatures using palladium nanoparticles supported on inorganic oxide-coated cordierite honeycomb monoliths

Varela-Gandía

Berenguer-Murcia

Lozano‐Castelló

et al. 2013

Catal. Sci. Technol.

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A study on the preparation of thin films of ZSM-5 and BETA zeolites, and a SAPO-5 silicoaluminophosphate, supported on cordierite honeycomb monoliths by in situ synthesis was carried out for their use as catalyst supports. Furthermore g-Al 2 O 3 was also coated onto a cordierite honeycomb monolith by a dip-coating method for use as a standard support. Structured monolithic catalysts were prepared by impregnation of the aforementioned coated monoliths with polymer-protected Pd nanoparticles. The monolithic catalysts have been tested for the total oxidation of naphthalene (100 ppm, GHSV 1220 h À1 ). From the combined use of the zeolite with polymer-protected nanoparticles, enhanced catalytic properties have been found for the total abatement of naphthalene. The Pd/MBETA and Pd/MZSM-5 catalytic monoliths have shown excellent activity with a high degree of stability, even after undergoing accelerated ageing experiments.

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Section: Introductionmentioning

confidence: 99%

“…The details of the molar compositions of the synthesis gel are given in [19]. The optimum conditions found for the synthesis of zeolite BETA on 55 cordierite monoliths were two consecutive synthesis steps with a crystallization temperature of 132ºC for 48 hours.…”

mentioning

confidence: 99%

Total oxidation of naphthalene at low temperatures using palladium nanoparticles supported on inorganic oxide-coated cordierite honeycomb monoliths

Varela-Gandía

Berenguer-Murcia

Lozano‐Castelló

et al. 2013

Catal. Sci. Technol.

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“…Nanocrystalline CeO 2 with a small crystallite size and high surface area was the most active [10], and it has also been demonstrated that activity could be improved further by the addition of copper to CeO 2 [11]. Mn 2 O 3 also showed appreciable activity for naphthalene oxidation, and more in depth studies using high surface area Mn 2 O 3 , prepared by nanocasting, have identified that it is potentially a catalyst worth further investigation [12]. Against this background, it is interesting to consider the influence of adding copper to manganese oxide for naphthalene oxidation.…”

Section: Introductionmentioning

confidence: 93%

Total oxidation of naphthalene using copper manganese oxide catalysts

2015

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a b s t r a c tA series of copper manganese oxide catalysts have been investigated for the total oxidation of naphthalene, selected as a model compound for oxidation of polyaromatic hydrocarbons. Catalysts were prepared by coprecipitation and were calcined at 300, 400, 500 and 600 • C. The catalyst most active and selective towards CO 2 was calcined at 400 • C, and this was related to the formation of a high surface area poorly crystalline CuMn 2 O 4 phase. Catalysts calcined at 500 and 600 • C were less effective in oxidising naphthalene to CO 2 , and their composition of more highly crystalline CuMn 2 O 4 , with Mn 2 O 3 for the 600 • C catalyst, formed partial oxidation products. There was also a direct relationship between the extent of reduction from temperature programmed reduction and catalyst performance.

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“…For example, recently manganese oxide has been identified as a potentially effective catalyst [6]. However, the most active metal oxide catalysts identified were those based around ceria.…”

Section: Open Accessmentioning

confidence: 99%

Silica Supported Platinum Catalysts for Total Oxidation of the Polyaromatic Hydrocarbon Naphthalene: An Investigation of Metal Loading and Calcination Temperature

2015

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A range of catalysts comprising of platinum supported on silica, prepared by an impregnation method, have been studied for the total oxidation of naphthalene, which is a representative Polycyclic Aromatic Hydrocarbon. The influence of platinum loading and calcination temperature on oxidation activity was evaluated. Increasing the platinum loading up to 2.5 wt.% increased the catalyst activity, whilst a 5.0 wt.% catalyst was slightly less active. The catalyst containing the optimum 2.5 wt.% loading was most active after calcination in air at 550 °C. Characterisation by carbon monoxide chemisorption and X-ray photoelectron spectroscopy showed that low platinum dispersion to form large platinum particles, in combination with platinum in metallic and oxidised states was important for high catalyst activity. Catalyst performance improved after initial use in repeat cycles, whilst there was slight deactivation after prolonged time-on-stream.

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Total oxidation of naphthalene using bulk manganese oxide catalysts

Cited by 51 publications

References 41 publications

Total oxidation of naphthalene at low temperatures using palladium nanoparticles supported on inorganic oxide-coated cordierite honeycomb monoliths

Total oxidation of naphthalene at low temperatures using palladium nanoparticles supported on inorganic oxide-coated cordierite honeycomb monoliths

Total oxidation of naphthalene using copper manganese oxide catalysts

Silica Supported Platinum Catalysts for Total Oxidation of the Polyaromatic Hydrocarbon Naphthalene: An Investigation of Metal Loading and Calcination Temperature

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