Adel. F. Sarofim, Dept. of Chemical Engineering, University of Utah, 50 So. Central Campus Drive, 3290 MEB, Salt Lake City, UT 84112-9203, Jeffrey J. Siirola, Eastman Chemical Company, PO Box 1972, Kingsport, TN 37662, James Katzer, MIT, PO Box 1346, Blue Hill, ME 04614, William Banholzer, Dow Chemical Company, 2030 Dow Center, Midland, MI 48623, and Michael Ramage (retired), ExxonMobil Research & Engineering.