(513ao) Synthesis of Fumed Silica Supported Ni and Cu Catalyst for Carbon Dioxide Conversion
AIChE Annual Meeting
Friday, November 20, 2020 - 8:00am to 9:00am
In this study we investigate the synthesis of nickel and copper catalyst supported on silica for CO2 conversion to methane. The activity and product selectivity and stability for methanation reaction on Ni/SiO2 and Cu/SiO2 catalysts have been evaluated using a flow reactor between 50ÂºC â 650ÂºC. The as-synthesized catalysts were characterized using XRD, SEM, TEM to understand the structural properties. In addition, the used catalysts after the reaction were characterized using similar techniques to evaluate the effect of reaction conditions on active phase and SiO2 support. Catalyst consisting of 1%Ni on fumed-SiO2 showed good activity for CO2 conversion to CH4 till 450ÂºC, thereafter CH4 formation decreases and CO increases and remains the only product at 650ÂºC. The catalyst shows excellent stability without any deactivation till 2700 min of TOS at 650ÂºC. The other catalysts, 1%Cu on SiO2 is also promising, however it was exclusively selective to CO and no trace of CH4 was obtained.