Click on “Download PDF” for the PDF version or on the title for the HTML version.

If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

A Char-Supported Nano-NiO Catalyst for Biomass Syngas Cleanup and Conditioning

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Transactions of the ASABE. 57(1): 93-101. (doi: 10.13031/trans.57.10290) @2014
Authors:   Duo Wang, Wenqiao Yuan, Donghai Wang, Ajay Kumar
Keywords:   Bioenergy, biomass gasification, nano-catalyst, tar removal, syngas conditioning.

A newly developed nano-NiO on char catalyst was evaluated for syngas cleanup and conditioning in an updraft biomass gasifier. The nano-Ni/char catalyst was prepared by mechanically mixing nano-sized NiO powder with char particles. Its performance in terms of tar removal and syngas composition enhancement was compared with Ni/char and Ni/γ-Al2O3 catalysts under various reforming conditions. The nano-Ni/char catalyst removed more than 99% of tars in the syngas, exhibiting similar or better catalytic performance than Ni/γ-Al2O3 at the same conditions, especially at relatively low temperatures, smaller NiO loadings, or shorter residence times. Its performance was also better than Ni/char catalyst in all cases. Meanwhile, the nano-Ni/char catalyst also enhanced H2 and CO concentrations in syngas, up to 36.73 vol% and 29.52 vol%, respectively. Furthermore, the nano-Ni/char catalyst did not deteriorate during the 8 h continuous durability test.

(Download PDF)    (Export to EndNotes)