Catalytic oxidation of vinyl chloride emission over LaMnO3 and LaB0.2Mn0.8O3 (B=Co, Ni, Fe) catalysts

Zhang, Chuanhui; Wang, Chao; Wang, Zhan; Guo, Yanglong; Guo, Yun; Lu, Guanzhong; Baylet, Alexandre; Giroir‐Fendler, A.

doi:10.1016/j.apcatb.2012.09.056

Cited by 298 publications

(126 citation statements)

References 48 publications

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“…As shown in Fig. 3(A), for all samples, three main reduction peaks were observed: the first two peaks below 500°C were due to the removal of the adsorbed oxygen species on oxygen vacancies with the concomitant reduction of Co 3+ and Ni 3+ to Co 2+ and Ni 2+ , respectively, and the last peak above 500°C was attributed to the reduction of Co 2+ Ni 2+ to Co 0 and Ni 0 , respectively [16,20]. The reduction temperature of LaCoO 3 was higher than LaNiO 3 in the whole temperature range, so the reduction peaks were gradually shifted to high temperature with the increased content substitution of Ni by Co.…”

Section: H 2 -Tprmentioning

confidence: 95%

“…As shown in Fig. 3(B), a small shoulder centered at 150-250°C appeared, which could be assigned to the reduction of oxygen species adsorbed on the surface [16]. LaNiO 3 with the highest reduction temperature showed the lowest activity for NO oxidation.…”

Section: H 2 -Tprmentioning

confidence: 98%

“…Except for the case when x = 0.1, the surface atomic ratios of La/ Co were larger than the theoretical ones as shown in Table 2, suggesting the surface enrichment of A-site elements. This phenomenon was commonly observed for perovskite oxides, and no remarkable connection with their catalytic activities could be established [10,16,25]. On the other hand, it is generally accepted that the adsorbed surface oxygen often participates in oxidation reactions.…”

Section: Xpsmentioning

confidence: 99%

“…As shown in Fig. 6, the O 1s peak was curve-fitted with four peaks: the adsorbed water molecules at 533.5 eV (denoted as O c ), the adsorbed oxygen at 531.1-531.5 eV (denoted as O b ), the surface lattice oxygen at 529.2 eV (denoted as O a ) and the oxygen species in La 2 O 3 at 528.8 eV [10,16]. According to a previous report [24], La 2 O 3 was formed easily in the perovskite structure by the coprecipitation method.…”

Section: Xpsmentioning

confidence: 99%

“…The LaNi 1Àx Co x O 3 (x = 0, 0.1, 0.3, 0.7, 1.0) catalysts were prepared by co-precipitation method according to a previous report [16]. La(NO 3 …”

Section: Catalysts Preparationmentioning

confidence: 99%

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NO oxidation over Ni–Co perovskite catalysts

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Section: H 2 -Tprmentioning

confidence: 95%

Section: H 2 -Tprmentioning

confidence: 98%

Section: Xpsmentioning

confidence: 99%

Section: Xpsmentioning

confidence: 99%

“…The LaNi 1Àx Co x O 3 (x = 0, 0.1, 0.3, 0.7, 1.0) catalysts were prepared by co-precipitation method according to a previous report [16]. La(NO 3 …”

Section: Catalysts Preparationmentioning

confidence: 99%

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Single Brick Solution for Lean‐Burn DeNO x and Soot Abatement

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Magnetic Field Modulated Intrinsic Charge and Spin Ordering in Ferromagnetic Electrocatalysts for Rechargeable Zn–Air Battery

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Zhang,

et al. 2023

Adv Funct Materials

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Magnetic field‐enhanced electrocatalytic activity has recently emerged as an effective strategy for electrocatalytic reactions. However, modulating the electrical behavior and spin ordering in real‐time using magnetic field during the electrocatalytic process remains challenging. Herein, based on the coexistence of room‐temperature ferromagnetic and magnetoresistance (MR) properties in La1−xSrxMnO3, it demonstrates that in addition to spin polarization, the negative MR effect contributes significantly to the enhancement of the oxygen evolution reaction (OER) owing to the considerable MR value (−7.32% for La0.8Sr0.2MnO3 at 1.0 T). Accordingly, a lessened OER overpotential of ≈120 mV (at 10 mA cm−2) and a reduced charge‐transfer resistance are observed in La0.8Sr0.2MnO3 under a magnetic field of 1.0 T. Additionally, the power density of self‐assembled Zn–air battery (ZnAB) based on La0.8Sr0.2MnO3 improves by 5.9 times under 1.0 T. Calculation results reveal that spin alignment can induce more unoccupied electronic states near the Fermi level, decrease the energy level of the Mn d‐band center, and significantly reduce the O* formation barrier to enhance the OER activity of Sr‐doped LaMnO3. Thus, the in situ regulation of charge and spin ordering by magnetic field offers a deeper understanding for designing high‐performance ZnABs.

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Catalytic oxidation of vinyl chloride emission over LaMnO3 and LaB0.2Mn0.8O3 (B=Co, Ni, Fe) catalysts

Cited by 298 publications

References 48 publications

NO oxidation over Ni–Co perovskite catalysts

NO oxidation over Ni–Co perovskite catalysts

Single Brick Solution for Lean‐Burn DeNO x and Soot Abatement

Magnetic Field Modulated Intrinsic Charge and Spin Ordering in Ferromagnetic Electrocatalysts for Rechargeable Zn–Air Battery

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