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. 2015 Oct 9;6:8550. doi: 10.1038/ncomms9550

Figure 4. Repeated cycles of butadiene hydrogenation on a Pt/Cu(111) SAA reveal no loss in activity.

Figure 4

Multiple cycles of TPD/R after the co-adsorption 50 L H2+0.1 L butadiene, followed by TPD of 50 L H2 and then TPD of 1 L CO on 0.02 ML Pt/Cu(111) SAA. Multiple co-adsorptions of H2 and butadiene lead to no decrease in the amount of butenes produced. The Pt atom concentration in the surface after each reaction cycle was quantified by CO titration. In each reaction cycle, the temperature was ramped from 85 to 450 K. Error bars are 1 s.d. of the data.