Mutual inhibition effects on the synchronous conversion of benzene, toluene, and xylene over MnOx catalysts

Lu, Tonglu; Zhang, Chunxia; Du, Fukuan; Zhang, Changsen; Zhang, Ruiqin; Li, Panpan; Li, Juexiu

doi:10.1016/j.jcis.2023.03.103

Cited by 8 publications

(1 citation statement)

References 44 publications

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“…The toluene concentration was determined via gas chromatography equipped with a flame ionization detector (GC-FID). The turnover frequency (TOF) was calculated based on the equation TOF = η F / n , where η indicates the conversion of toluene, F is the total flow rate (mol s –1 ), and n is the actual molar amount of Cu and Mn , detected via ICP-AES.…”

Section: Methodsmentioning

confidence: 99%

Enhanced Replenishment of Active Lattice Oxygen Using Chiral Copper Oxide

Chen,

Li,

Jiang

et al. 2024

ACS Appl. Mater. Interfaces

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Effective catalytic performance of the transition metal oxide is attributed to high specific surface areas, abundant surface oxygen atoms, and balanced valence ratios. Although the chirality of the transition metal has attracted attention, most studies have focused on optical application. A few chiral transition metal oxides were used as electrocatalysts and photocatalysts. The influence of the chiral catalysts on the thermal catalysis process has been less explored. In this study, Mn-loaded chiral (M/l-CuO and M/d-CuO) and achiral CuO (M/a-CuO) were synthesized and compared in the catalytic oxidization of toluene. Spectrally analyzed Mn was well-dispersed on both chiral and achiral CuO. l-CuO and d-CuO showed nanoflower-like chirality. The angles between each (001) plane of CuO were the source of chirality. The toluene turnover frequency (TOF) of the samples was in the order of Mn/d-CuO (5.6 × 10–5 s–1) > Mn/l-CuO (4.4 × 10–5 s–1) > Mn/a-CuO (3.2 × 10–5 s–1) at 240 °C, consistent with the order of the oxygen replenishment rate. The as-prepared catalysts had similar ratios of lattice oxygen/surface adsorbed oxygen, Mn3+/Mn4+, and Cu+/Cu2+. A higher TOF was attributed to chirality, which increased the lattice oxygen replenishment speed from the gaseous phase to the solid surface. Our study indicates gas–solid catalysis from a structure–activity viewpoint.

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Section: Methodsmentioning

confidence: 99%