The Clean Fuels and Chemical Research Group at the University of Kentucky Center for Applied Energy Research can lay claim to not one but two "most cited" papers in the area of applied catalysis research.

One of the most downloaded articles on the Applied Catalysis A web site is ... Fischer–Tropsch synthesis: Effect of Pd, Pt, Re, and Ru noble metal promoters on the activity and selectivity of a 25%Co/Al2O3 catalyst, by Wenping Ma, Gary Jacobs, Robert A. Keogh, Dragomir B. Bukur, and Burtron H. Davis. 

 An older publication from the Clean Fuels research group continues to be one of the most cited papers for the same journal ... Fischer-Tropsch synthesis: Temperature programmed EXAFS/XANES investigation of the influence of support type, cobalt loading, and noble metal promoter addition to the reduction behavior of cobalt oxide particles, vol 333, Issue 2, December 2007, Pages 177-191 by Jacobs, G., Ji, Y., Davis, B.H.,  Cronauer, D., Kropf, A.J., Marshall, C.L.