n-Pentane Isomerization Catalyzed by Fe- and Mn-Containing Tungstated Zirconia Characterized by Raman Spectroscopy

Although Fe and Mn promote sulfated zirconia for n-pentane isomerization, they do not promote tungstated zirconia. Raman spectra demonstrate the formation of manganese tungstate (and possibly iron tungstate), which likely hinder(s) the formation of highly dispersed oxidic promoters such as those in iron- and manganese-promoted sulfated zirconia.