摘要
A series of monolithic MnO_(2)/iron mesh (IM) catalysts for oxidation of toluene were successfully prepared by using in situ hydrothermal growth.MnO_(2)can grow firmly on the IM substrates surface with a shedding rate of only 0.14%.Due to the highest O_(ads) and high-valent Mn^(4+) and Fe^(3+) elements,the temperature at 50% and 90% toluene conversion (T_(50%) and T_(90%)) was 252 and 265℃,respectively for the best performance catalyst (hydrothermal temperature of 80℃,hydrothermal time of 12 h,and precursor manganese ion concentration of 0.03 mol/L).The catalysts also presented good water resistance and cycle performance.In-situ DRIFTS results suggesting that toluene was first rapid transformed into the reaction intermediate species (benzoate species) and then converted to CO_(2)and H_(2)O.Therefore,this work provides a new direction for the research and application of IM-based monolithic catalysts.
基金
supported by the Fundamental Research Funds for the Central Universities (No. 2021ZY79)
Beijing Municipal Education Commission through the Innovative Transdisciplinary Program "Ecological Restoration Engineering” (No. GJJXK210102)
National Natural Science Foundation of China (Nos. 42075169, U1810209)
National Key R&D Program of China (No. 2021YFE0110800)
Chinese-Serbian collaboration project (No. 451-03-1205/2021-09)。
