DOI number:10.1016/j.fuel.2021.121794
Affiliation of Author(s):中南大学
Journal:Fuel
Key Words:Excellent water vapor resistance; PtCo3 catalysts; The Arrhenius model; Theoretical calculations; Toluene oxidation
Abstract:The PtCo3 nanoparticles (NPs of 2–5 nm) were synthesized by the organic phase reduction method and the PtCo3-C samples were obtained by physically loading the bimetallic NPs on the carbon black. The catalytic activity and stability of PtCo3-C for toluene oxidation under different reaction conditions were studied. The PtCo3-C can completely oxidize and decompose 1000 ppm toluene at 238 ℃ for at least 120 h, which has excellent low-temperature catalytic activity and thermal stability. In addition, PtCo3-C displays a great water and CO2 resistance when 3.5 to 20 vol% water vapor (at least 110 h) or 3.5 to 10 vol% CO2 (at least 60 h) is introduced into the reaction gas at 238 ℃. Moreover, the adsorption energy of toluene (−73.68 kJ mol−1) is much higher than that of water (−24.5 kJ mol−1) and CO2 (−37.56 kJ mol−1), which were calculated by the density functional theory (DFT). Furthermore, catalytic mechanism of the oxidation of toluene over the PtCo3-C catalyst was also proposed. This study presents a good catalyst candidate obtaining high catalytic activity and stability with great water and CO2 resistance for the removal of toluene.
Indexed by:Journal paper
Document Code:121794
Volume:307
ISSN No.:00162361
Translation or Not:no
Date of Publication:2022-01-01
Included Journals:SCI
Links to published journals:https://www.sciencedirect.com/science/article/pii/S0016236121016732?via%3Dihub