The catalytic performances in steam reforming (SR) and aqueous phase reforming (APR) of glycerol of a bimetallic Pt-Mn catalyst supported on activated carbon are investigated and correlated with the surface properties of the catalyst. Under SR conditions, Mn showed a significant promoting effect over Pt/C, both in terms of hydrogen production rate and conversion, with a higher selectivity toward the glycerol dehydration products. Upon addition of Mn the amount of strong Lewis acid sites increased, promoting the dehydration of glycerol and favoring the CAO over CAC cleavage at expenses of hydrogen selectivity.
Conversely, under APR conditions, a slightly higher hydrogen selectivity and only minimal enhancement
in hydrogen production were found, while the products selectivity was comparable to Pt/C. Most of Mn
leached into the aqueous media, but the remaining (
Revised: August 8, 2017 |
Published: March 5, 2017
Citation
Bossola F., X.I. Pereira Hernandez, C. Evangelisti, Y. Wang, and V. Dal Santo. 2017.Investigation of the promoting effect of Mn on a Pt/C catalyst for the steam and aqueous phase reforming of glycerol.Journal of Catalysis 349.PNNL-SA-127448.doi:10.1016/j.jcat.2017.03.002