SiWei (Andy) Chang
Project Description: TMP catalysts (a type of ceramic-metallic material) are selective and active towards C-O bond rupture during oxygenate hydrodeoxygenation (HDO) for biooil upgrade. Currently, the manner by which the addition of P to transition metal surfaces affects intrinsic energy barriers for C-O, C-H, and C-C bond rupture steps, and the potential for changes in the mechanisms for breaking these bonds, remain unclear between transition metal and TMP catalysts. Thus, a deeper understanding of the influence of P-atoms on surface chemistry in the immediate vicinity would be useful for the design of more active and selective catalysts.
Honors and Awards:
-  Thomas J. Hanratty Travel Award – University of Illinois
-  2nd Place Poster Presentation, Annual ChBE Symposium
- [2014 – 2015] Four Times Ranked as Excellent TA by Students
-  National Science Foundation Graduate Research Fellowship; Honorable Mention
-  CMU Summer Undergraduate Research Fellowship (SURF)
-  CMU Small Undergraduate Research Grant (SURG)
-  National Institute of Health Academy Finalist
5. Chang, S.A.; Sampath, A.; Flaherty, D. W.; Effects of Phosphorus on selective dehydrogenation: Cyclohexene reaction over Ru(0001) and Px-Ru(0001) J. Catal. To be submitted
4. Chang, S.A.; Vermani, V.; Flaherty, D.W. “Effects of Phosphorus on Bond Rupture in Acetic Acid Decomposition over Ru (0001) and Px-Ru(0001)“ J. Catal. 2017, 353, 181-191.
3. Chang, S.A.;, Vermani, V.; Flaherty, D.W. “Effects of Phosphorus and Alkyl Substituents on C-H, C-C, and C-O Bond Rupture within Carboxylic Acids on Ru(0001)“J. Vac. Sci. Tech. 2017, 35, 05C309.
2. Chang, S.A., Flaherty, D.W. “Mechanistic Study of Formic Acid Decomposition over Ru(0001) and Px-Ru(0001): Effects of Phosphorous on C-H and C-O Bond Rupture” J. Phys. Chem. C 2016, 120, 25425-25435.
1. Zhong, Z.; Chang, S. A.; Kalinowski, A.; Wilson, K. L.; Dahl, K. N., “Stabilization of the spectrin-like domains of nesprin-1alpha by the evolutionarily conserved “adaptive” domain.” Cell Mol Bioeng 2010, 3, 139-150.