Status : Verified
Personal Name Loreto, Fe Corazon B.
Resource Title Enhancing the thermal catalytic oxidation of Toluene on Ce and Cu co-doped Manganese Oxide Octahedral Molecular Sieve Catalyst In a packed-bed reactor
Date Issued 01 June 2018
Abstract Laboratory-synthesized cryptomelane-type manganese oxide has been doped with Cu and Ce, and co-doped with the same metals by in-situ and ex-situ methods. This was done to see if co-doping can enhance the thermal catalytic activity of K-OMS 2. Initially, 1%, 2% and 4% by mole Cu or Ce were doped to the hydrothermally synthesized K-OMS 2 by incipient wetness impregnation. The thermal degradations for toluene were studied by reacting it with synthesized doped catalysts in a packed bed reactor. The reactor is attached to a gas chromatographer with a thermal conductivity detector (GC-TCD) to detect the amount of unreacted toluene. It was found in the experiments that 4% by mole Cu and 1% by mole Ce doped on K-OMS2 gave good thermal catalytic efficiency results. Meanwhile, co-doping Ce and Cu on OMS-2 with a mole ratio of 0.25:3.75 per 1 mole of OMS 2 gave the best catalytic activity. The observed VOC degradation by each catalyst have been studied and compared with the results of catalyst characterizations done by X-ray diffraction (XRD), X-ray absorptionspectroscopy (XAS), Brunauer-Emmett-Teller (BET) surface area analysis and Thermal Gravimetric Analysis (TGA).
Degree Course MS Environmental Engineering
Language English
Keyword VOC, cryptomelane, catalytic degradation, gas chromatography, Mars-van Krevelen mechanism
Material Type Thesis/Dissertation
Preliminary Pages
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