| 저자(한글) |
Carbajal-Ramos, I.A.,Gomez, M.F.,Condo, A.M.,Bengio, S.,Andrade-Gamboa, J.J.,Abello, M.C.,Gennari, F.C. |
| 초록 |
Ru (2wt.%) on Ce 0.8 Zr 0.2 O 2 catalysts were investigated to test their ethanol steam reforming (ESR) performance. The supports were obtained through two different synthesis methods: co-precipitation (PI) and mechanochemical reaction (MR). Characterization of the catalysts, before and after ESR, were performed using X-ray powder diffraction (XRPD), nitrogen physisorption, CO chemisorption, temperature programmed reduction (TPR), high resolution transmission electron microscopy (HR-TEM), thermogravimetry, and X-ray photoelectron spectroscopy (XPS) measurements. The Ru (2wt.%) PI catalyst exhibited the highest activity and selectivity to hydrogen and no coke deposition was observed during catalytic operation, even when compared to Ni (8wt.%) PI catalyst. A possible reaction pathway is proposed. The remarkably good catalytic performance of Ru (2wt.%) PI is regarded as being due to a combination of factors: improved metal dispersion on Ce 0.8 Zr 0.2 O 2 , favorable metal-support interaction and water gas shift reaction promotion. |
