Publication - Journal Article Protonated Sites on Sulfate-Promoted Zirconium Oxide Catalysts: A Fourier Transform-IR, Thermal Analysis, and Solid State1H NMR Study DOI https://doi.org/10.1006/jcat.1998.2000 Journal Article Journal of Catalysis, vol. 176, iss. 1, pp. 14-24, 1998 Authors Donald F. Stec, Robert S. Maxwell, Herman Cho Language English