Abstract
CeO2-ZrO2 (CZ) supported catalysts were tested for their ability to deoxygenate guaiacol using H2 produced in-situ via the water-gas-shift reaction (WGSR). Activity tests were performed using a horizontally stirred batch reactor and an atmosphere containing only CO and H2O. CZ-41, a CZ support nano-casted from MCM-41, provided a high surface area (213 m2/g) and a high percentage of oxygen vacancies. A sequentially prepared 2%Ni4%Fe catalyst supported on CZ-41 produced significant amounts of H2 and CO2 and achieved higher guaiacol conversion than 2%Co4%Fe/CZ-41 which was prepared via co-addition. Following activity tests with and without additional H2 confirmed the vital role of surface activated hydrogen for the conversion of guaiacol. Compared to 2%Ni4%Fe/CZ-41, trimetallic 2%Ni0.5%Co4%Fe/CZ-41 had improved WGSR capabilities as Co was added with Fe to make it more reducible.
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