Influence of the material as support for nickel on the product selectivity of the tri-reforming of methane

In this work we presented the synthesis and performance of two different materials supports, silica and carbon, impregnated with 5% Nickel and the effect of reaction condition and feed compositions on the tri-reforming for the synthesis gas production. The highest conversions of CH4 and CO2 were obtained at 750 degrees C and weight hourly space velocity (WHSV) 1250 mL/g.min. The 5%Ni/MWCNT catalysts reached 90.2% and 76.5% conversions of CH4 and CO2, while the catalyst 5%Ni/SBA-15%, 87.4% and 64.7%, respectively. The conversions for the MWCNT are significantly higher than for the SBA-15 at 750 degrees C, but the yields of H2 and selectivity of CO decreased on the SBA support. The influence of the feed conditions on the activity was tested. Both catalysts demonstrated high activity and good stability. TGA results after reaction showed that the carbon nanotubes were preserved, and SBA-15 is more resistant to carbon formation under such reaction conditions.