Catalytic self-sustained combustion of toluene and reaction pathway over CuxMn1-xCe0.75Zr0.25/TiO2 catalysts

High-Performance Metal Oxide-Modified V/TiO2 Catalysts for Selective Oxidation of 2-Methylnaphthalene to 2-Naphthaldehyde: An Experimental and Theoretical Study

“…Meanwhile, the surface oxygen species act as significant active sites in the chemisorption (dehydrogenation) of 2-MN. In addition, the bands at 1697 and 1646 cm –1 ascribed to CO stretching vibration can be identified, which directly proves the formation of target product 2-NA. − Moreover, the bands at 1742 and 1694 cm –1 are correlated with anhydride species as well as menadione species . The formation of oxidative products in the absence of oxygen has shown that reactant 2-MN is oxidized by the surface oxygen species over the catalyst and the reaction obeys the Mars–van Krevelen mechanism.…”

“…Besides, the bands at 1161 and 1242 cm –1 are assigned to C–O vibration. These phenomena illustrate that 2-MN is chemisorbed on the catalyst surface by breaking the α-H bond of methyl in 2-MN to form the methylene species (C 12 H 11 -CH 2 -O) . Meanwhile, the surface oxygen species act as significant active sites in the chemisorption (dehydrogenation) of 2-MN.…”

“…These phenomena illustrate that 2-MN is chemisorbed on the catalyst surface by breaking the α-H bond of methyl in 2-MN to form the methylene species (C 12 H 11 -CH 2 -O). 81 Meanwhile, the surface oxygen species act as significant active sites in the chemisorption (dehydrogenation) of 2-MN. In addition, the bands at 1697 and 1646 cm −1 ascribed to CO stretching vibration can be identified, which directly proves the formation of target product 2-NA.…”

Insights into the role of strontium in catalytic combustion of toluene over La1−xSrxCoO3 perovskite catalysts

“…S4 (ESI †), peaks around 1619 and 1495 cm À1 47 were assigned to the in-plane skeletal vibration of the aromatic ring. At the same time, the absorption intensity of benzaldehyde species (1593 and 1446 cm À1 ) and benzoate species (1533 cm À1 ), 47,48 and the asymmetric vibration (1563 cm À1 ) 49,50 and symmetric vibration (1391 cm À1 ) 51,52 infrared peaks attributed to the benzoate species increased with time, implying that toluene and intermediate product were easily adsorbed on both L 0.82 S 0.18 C and LC samples. The peak around 3078 cm À1 was assigned to the absorption of the benzene ring.…”

High Catalytic Performance of Mn-Doped Ce-Zr Catalysts for Chlorobenzene Elimination

“…MnO x compounds are highly active due to their various labile oxygen species and high efficiency in reaction/oxidation cycles [23] and have been widely used in the catalytic removal of various pollutants, including benzene series [24], chlorinated aromatic hydrocarbons [25], nitrogen oxides [26] and aldehydes [27]. In particular, MnO x -CeO 2 solid solution, as an environment-friendly catalyst with high catalytic efficiency, has become the focus of research on multipurpose catalysts [28].…”