Mesoporous silica-pillared clays supported nanosized Co3O4-CeO2 for catalytic combustion of toluene

Study of Catalytic Combustion of Chlorobenzene and Temperature Programmed Reactions over CrCeOx/AlFe Pillared Clay Catalysts

“…The chemical compositions of the catalysts were determined with energy dispersive X-ray spectroscopy (EDS) using an Oxford INCA instrument (Oxford Instruments, Warrington, UK). All the characterization methods for the samples have been reported and detailed in our previous research [30,31,32].…”

“…The flow rate of the reductive gas (5 vol.% H 2 /Ar, purified by deoxidizer and silica gel) was 40 mL/min, and the reaction temperature was elevated by 7.5 °C/min. The H 2 uptake was determined using a thermal conductivity detector (TCD) detector (Shimadzu, GC-14C, Kyoto, Japan), and the H 2 O produced was absorbed using 5 Å zeolite [32].…”

“…Temperature-programmed desorption (TPD) and temperature-programmed surface reaction (TPSR) measurement were carried out in the same equipment as the catalytic performance tests to determine the adsorption capacity and the relationship between desorption performance and catalytic combustion properties [30,32]. Prior to the measurement, 350 mg catalyst was pre-treated in Ar (99.99%) at 300 °C for 30 min, then the temperature was decreased to 50 °C.…”

MnOx dispersed on attapulgite derived Al-SBA-15: a promising catalyst for volatile organic compound combustion

“…However, due to the lack of active sites in the structure, SBA-15 hardly makes a direct contribution to the catalytic activity except for the stabilization and dispersion of the active components. [34][35][36][37][38][39] In order to further improve its catalytic combustion performance, atom (e.g. Al, Fe and Co) doping has been generally adopted to create acidic and defect sites in the mesoporous SBA-15, which can not only generate electron-rich oxygen vacancies but also enhance the dispersion and stability of the supported active metal or metal oxide species.…”

Preparation of mesoporous CexCoO as highly effective catalysts for toluene combustion: The synergetic effects of structural template and Ce doping

“…Co 3 O 4 has unique spinel‐type structure, where O 2− is closely packed in cubic form, Co 2+ is tetrahedral coordination, and Co 3+ is octahedral coordination. [ 7 ] Due to this representative crystal structure, Co 3 O 4 shows splendid catalytic performance because the bond energy of CoO is weaker and the binding rate of oxygen is higher [ 8 ] and is successfully applied for catalytic oxidation of VOCs. For example, Ren et al [ 9 ] synthesized 3D hierarchical Co 3 O 4 nanocatalysts with five different morphologies by way of a hydrothermal process for toluene oxidation.…”