Ethanol combustion over strontium- and cerium-doped LaCoO3 catalysts

Białobok, B.; Trawczyński, J.; Miśta, W.; Zawadzki, M.

doi:10.1016/j.apcatb.2006.12.006

Cited by 97 publications

(58 citation statements)

References 39 publications

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“…Therefore, despite of the formation of SrCO 3 phase, this method has been largely used in the preparation of perovskite-type mixed oxides, such as in Refs. [20][21][22]. In the present case, the SrCO 3 phase also has not been detected by XRD patterns and its influence on the reaction is neglected.…”

Section: Xrdmentioning

confidence: 90%

Perovskite-Like Mixed Oxides (LaSrMn1−x Ni x O4+δ, 0 ≤ x ≤ 1) as Catalyst for Catalytic NO Decomposition: TPD and TPR Studies

Xiao

Yang

2009

Catal Lett

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Catalytic NO decomposition on LaSrMn 1-x Ni x O 41d (0 B x B 1) is investigated. The activity of NO decomposition increases dramatically after the substitution of Ni for Mn, but decreases when Mn is completely replaced by Ni (x = 1.0). The optimum value is at x = 0.8. These indicate that the catalytic performance of the samples is contributed by the synergistic effect of Mn and Ni. O 2 -TPD and H 2 -TPR experiments are carried out to explain the change of activity. The former indicates that only when oxygen vacancy is created, could the catalyst show enhanced activity for NO decomposition; the latter suggests that the best activity is obtained from catalyst with the most matched redox potentials (in this work, the biggest DT and DE values). The close relationships between activity and DT or DE indicate that DT and DE are important parameters of catalyst for NO decomposition.

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Section: Xrdmentioning

confidence: 90%

Perovskite-Like Mixed Oxides (LaSrMn1−x Ni x O4+δ, 0 ≤ x ≤ 1) as Catalyst for Catalytic NO Decomposition: TPD and TPR Studies

Xiao

Yang

2009

Catal Lett

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“…3a, b). The lower temperature peak (usually denoted as a) for temperatures below 400°C corresponds to oxygen adsorbed over surface anionic vacancies [1,30,31]. An intermediate peak (a 0 ) for the temperature range 400-700°C has normally been ascribed to lattice oxygen as oxygen from dislocations and grain frontiers [1,15,[30][31][32][33].…”

Section: O 2 -Tpd Experiments In Vacuummentioning

confidence: 99%

“…The lower temperature peak (usually denoted as a) for temperatures below 400°C corresponds to oxygen adsorbed over surface anionic vacancies [1,30,31]. An intermediate peak (a 0 ) for the temperature range 400-700°C has normally been ascribed to lattice oxygen as oxygen from dislocations and grain frontiers [1,15,[30][31][32][33]. Recent X-ray photoemission studies carried out in our group [12] over lanthanum substituted cobaltites and by Rousseau et al [22] over La-Co-Fe systems support this latter affirmation and point out to the presence of high binding energy species with low electron density.…”

Section: O 2 -Tpd Experiments In Vacuummentioning

confidence: 99%

“…Nevertheless, the emission of toluene from stationary and mobile sources represents a serious environmental issue due to its deleterious health effects, the easiness for spreading throughout the atmosphere and its contribution to global warming and photo smog processes [1][2][3][4]. Therefore, the control and remediation of VOCs in general, and toluene in particular, has acquired a paramount importance in the legislation of developed countries including more restricting and severe emission levels.…”

Section: Introductionmentioning

confidence: 99%

“…Noblemetals (supported or unsupported) are the most widespread catalysts employed in the VOC remediation. However, their use presents several drawbacks: high price, tendency to poison and sinter and sometimes poor thermal stability [1][2][3][4][5][6][7][8]. For these reasons, other alternatives have been studied during the past years.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Study of Oxygen Reactivity in La1−x Sr x CoO3−δ Perovskites for Total Oxidation of Toluene

et al. 2012

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The total oxidation of toluene is studied over catalytic systems based on perovskite with general formula AA 0 CoO 3-d (A = La, A 0 = Sr). The systematic and progressive substitution of La 3? by Sr 2? cations in the series (La 1-x Sr x CoO 3-d system) of the perovskites have been studied to determine their influence in the final properties of these mixed oxides and their corresponding reactivity performance for the total oxidation of toluene as a model volatile organic compound with detrimental effects for health and environment. The structure and morphology of the samples before and after reaction have been characterized by XRD, BET and FE-SEM techniques. Additional experiments of temperature programmed desorption of O 2 in vacuum and reduction in H 2 were also performed to identify the main surface oxygen species and the reducibility of the different perovskites. It is remarkable that the La 1-x Sr x CoO 3-d series presents better catalytic performance for the oxidation of toluene, with lower values for the T 50 (temperature of 50 % toluene conversion) than the previously studied LaNi 1-y Co y O 3 series.

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Kinetic Study of Methyl Isobutyl Ketone Combustion over a Commercial Pt/Alumina Catalyst

et al. 2016

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Catalytic combustion of methyl isobutyl ketone (MIBK) in diluted air mixtures over a commercial Pt/Al 2 O 3 catalyst was experimentally investigated in a continuous laboratory setup. The experimental data were used to develop a kinetic model of the MIBK combustion over the Pt/Al 2 O 3 catalyst. Among the available kinetic theories, the Langmuir-Hinshelwood one proved to be the most appropriate for the obtained data. The kinetic parameters of the formulated rate expression were estimated using both differential and integral methods. The adequacy of the proposed kinetic model and the estimated parameter values were tested by statistical criteria and thermodynamic consistency. The computation results indicate that the integral method, based on a heterogeneous reactor model, is the recommended approach in the estimation of the kinetic parameters for catalytic combustion processes involving volatile organic compounds.

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Ethanol combustion over strontium- and cerium-doped LaCoO3 catalysts

Cited by 97 publications

References 39 publications

Perovskite-Like Mixed Oxides (LaSrMn1−x Ni x O4+δ, 0 ≤ x ≤ 1) as Catalyst for Catalytic NO Decomposition: TPD and TPR Studies

Perovskite-Like Mixed Oxides (LaSrMn1−x Ni x O4+δ, 0 ≤ x ≤ 1) as Catalyst for Catalytic NO Decomposition: TPD and TPR Studies

Study of Oxygen Reactivity in La1−x Sr x CoO3−δ Perovskites for Total Oxidation of Toluene

Kinetic Study of Methyl Isobutyl Ketone Combustion over a Commercial Pt/Alumina Catalyst

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