La2O3 modified silica-pillared clays supported PtOx nanocrystalline catalysts for catalytic combustion of benzene

Rational Design and Construction of Monolithic Ordered Mesoporous Co3O4@SiO2 Catalyst by a Novel 3D Printed Technology for Catalytic Oxidation of Toluene

“…It is noteworthy that O OH may be caused by a large amount of ordered mesoporous Si–O–Si. , The O latt plays a significant role in the formation of intermediate species in toluene catalytic oxidation. In addition, the O ads is the result of adsorption of O 2 gas by oxygen vacancies, and its mobility is higher than O latt , and also plays a major role in catalytic activity. , SI Table S1 summarized surface element composition of O, O latt (O latt /(O latt + O ads + O OH )) and O ads (O ads /(O latt + O ads + O OH )). Overall, OM-Co 3 O 4 @SiO 2 –S catalysts have the most abundant surface oxygen species, accounting for about 67.2% of the surface elemental composition of the catalysts.…”

“…In addition, the O ads is the result of adsorption of O 2 gas by oxygen vacancies, and its mobility is higher than O latt , and also plays a major role in catalytic activity. 48,49 )), we speculated that the appropriate ratio of surface lattice oxygen on the catalyst surface would play an important role in the intermediate speciation of toluene oxidation. The oxidation of toluene is accelerated by the formation of oxygen vacancies due to the consumption of lattice oxygen.…”

Hydroxyl-Decorated Pt as a Robust Water-Resistant Catalyst for Catalytic Benzene Oxidation

“…The single-atom Pt catalyst exhibited a high density of surface oxygen vacancies, good low-temperature reducibility, and strong benzene adsorption ability, resulting in enhanced catalytic activity. Furthermore, Cheng et al found that Pt nanoparticles supported on La-modified silica-pillared clay carriers exhibited advantages such as Pt dispersion, abundant active oxygen species, and favorable redox properties. These characteristics contributed to improved catalytic benzene oxidation activity and stability.…”

Heterogeneous Fenton- and Photo-Fenton-Like Catalytic Degradation of Emerging Pollutants Using Fe2o3/Tio2/Pillared Clays Synthesized from Aluminum Industrial Wastes

“…One of these modification methods consists in introducing pillars between the layers by replacing the exchangeable cations in the clay with rigid metal oxide clusters, thus converting the clays into pillared clays, which have a larger basal spacing and pore volume [26]. Pillared clays have also been successfully studied as catalysts and catalytic supports for several chemical reactions [27][28][29][30][31]. One of the modifications made to catalytic supports for use in catalysis involves the incorporation or deposition of metal and nonmetal ions.…”