Preparation and characterization of palladium containing nickel–iron–cobalt perovskite catalysts for the complete oxidation of C1–C6 alkanes

Stanchovska, Silva; Марков, П. В.; Tenchev, K.; Stoyanova, Р.; Zhecheva, E.; Naydenov, A.

doi:10.1007/s11144-017-1278-8

Cited by 5 publications

(3 citation statements)

References 38 publications

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“…The impregnated support was heated at 400 • C for 3 h in air in order to decompose the citrate salts, and then the obtained solid residue was annealed at 600 • C for 3 h in air. The temperature treatment procedure is suitable for the preparation of substituted perovskites with high specific surface area, as was previously shown [13]. The weight amount of the deposed perovskite is 10%.…”

Section: Catalyst Preparationmentioning

confidence: 74%

“…Among perovskite series, the highest catalytic activity in CH 4 combustion was established for perovskites containing lanthanum as metal A and Co, Mn, Fe and Ni as metal B [10,11]. The mixing of transition metal ions having different ionic dimensions in the B-site permits to design of both the redox properties and oxygen content of perovskites AB 1-x M x O 3±δ , as a result of which their catalytic properties are significantly improved (for example, mixed LaCo 1-x Fe/Mn x O 3 and double substituted LaCo 1-2x Ni x Fe x O 3 perovskites) [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…The aim of the present study was to obtain new data on the preparation and the catalytic behavior of Pd-containing perovskite catalysts supported on SiO 2 -modified/γ-alumina for further application in abatement of methane emissions. The nominal composition of the Pd-containing perovskite La(Co 0.8 Ni 0.1 Fe 0.1 ) 0.85 Pd 0.15 O 3 is selected since nickel and iron ions have opposite effects on the redox properties of cobalt-based perovskite, that allows to modify and improve their catalytic performance, as it was previously shown [13,14]. Regarding the deposition of the catalytically active phase, two synthetic procedures have been applied: (i) impregnation and (ii) aerosol assisted chemical vapor deposition.…”

Section: Introductionmentioning

confidence: 99%

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New Insight into the Interplay of Method of Deposition, Chemical State of Pd, Oxygen Storage Capability and Catalytic Activity of Pd-Containing Perovskite Catalysts for Combustion of Methane

et al. 2021

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Elaboration of Pd-supported catalysts for catalytic combustion is, nowadays, considered as an imperative task to reduce the emissions of methane. This study provides new insight into the method of deposition, chemical state of Pd and oxygen storage capability of transition metal ions and their effects on the catalytic reactivity of supported catalysts for the combustion of methane. The catalyst with nominal composition La(Co0.8Ni0.1Fe0.1)0.85Pd0.15O3 was supported on SiO2-modified/γ-alumina using two synthetic procedures: (i) aerosol assisted chemical vapor deposition (U-AACVD) and (ii) wet impregnation (Imp). A comparative analysis shows that a higher catalytic activity is established for supported catalyst obtained by wet impregnation, where the PdO-like phase is well dispersed and the transition metal ions display a high oxygen storage capability. The reaction pathway over both catalysts proceeds most probably through Mars–van Krevelen mechanism. The supported catalysts are thermally stable when they are aged at 505 °C for 120 h in air containing 1.2 vol.% water vapor. Furthermore, the experimentally obtained data on La(Co0.8Ni0.1Fe0.1)0.85Pd0.15O3—based catalyst, supported on monolithic substrate VDM®Aluchrom Y Hf are simulated by using a two-dimensional heterogeneous model for monolithic reactor in order to predict the performance of an industrial catalytic reactor for abatement of methane emissions.

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Section: Catalyst Preparationmentioning

confidence: 74%