**5. Conclusions**


**Supplementary Materials:** The following are available online at http://www.mdpi.com/2073-4344/8/7/292/s1, Figure S1. TPD-TGA of 1-propanamine over ZrO<sup>2</sup> . The desorption features correspond to hydrogen (*m*/*e* = 2), unreacted 1-propanamine (*m*/*e* = 30) and propionitrile (*m*/*e* = 54). The graphic symbols represent schematic ZrO<sup>2</sup> support (gray).

**Author Contributions:** R.J.G. and C.B.M. initiated the concept; C.W. and J.D.L. designed and conceived the experiments; C.W., X.M., J.D.L., and T.M.O. performed the experiments; C.W., J.D.L., T.M.O., and Y.-H.Y. analyzed the data; C.W. and J.D.L. drafted the manuscript; R.J.G. and C.B.M. reviewed the manuscript prior to submission. All authors approved the final manuscript.

**Funding:** This research was funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under Award no. DE-SC0001004.

**Acknowledgments:** We acknowledge support from the Catalysis Center for Energy Innovation, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under Award no. DE-SC0001004. We acknowledge the NSF Major Research Instrumentation Grant DMR-0923245 for the Raman spectroscopy measurement.

**Conflicts of Interest:** The authors declare no conflict of interest.

### **References**


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