TY - JOUR ID - 10.1016/j.jes.2021.06.031 TI - Hydrothermal-treated Pt/Al2O3 as an excellent catalyst for toluene total oxidation AU - Xiao Chen AU - Yong Wang AU - Jianyu Li AU - Zhongheng Hu AU - Ying Zhou AU - Huayan Liu AU - Hanfeng Lu VL - 34 IS - 6 PB - SP - 114 EP - 124 PY - JF - Journal of Environmental Sciences JA - J. Environ. Sci. UR - http://www.jesc.ac.cn/jesc_en/ch/reader/view_abstract.aspx?file_no=S1001074221002606&flag=1 KW - Corresponding author.;2;Calcination activation;Hydrothermal activation;AlO(OH);Catalytic combustion of toluene AB - The preparation of highly active supported noble metal catalysts with a low noble metal loading has always been the ultimate goal of researchers working on catalysis. Hydrothermally treated Pt/Al2O3 (Pt/Al2O3-H) exhibits better catalytic activity than that (Pt/Al2O3-C) treated via the conventional calcination approach. At the high space velocity of 100,000 mL/(g∙hr), the temperature that correspond to 50% toluene conversion (T50) of Pt/Al2O3-H is 115°C lower than that of Pt/Al2O3-C, and the turnover frequency (TOF) value can reach 0.0756 sec−1. The mechanism by which the hydrothermal approach enhances Pt/Al2O3 activity has been investigated. The structure associated with the high catalytic activity of Pt nanoparticles (NPs) can be retained via hydrothermal treatment. Furthermore, the support is transformed to AlO(OH) with numerous surface hydroxyl groups, which in turn can facilitate the adsorption of toluene. And the synergistic effects of Pt NPs and AlO(OH) increases the contents of Pt in oxidation state and active oxygen, which are beneficial for toluene oxidation. ER -