M. Scheithauer et al., n-pentane isomerization catalyzed by Fe- and Mn-containing tungstated zirconia characterized by Raman spectroscopy, J CATALYSIS, 191(2), 2000, pp. 271-274
Although Fe and Mn promote sulfated zirconia for n-pentane isomerization, t
hey do not promote tungstated zirconia. Raman spectra demonstrate the forma
tion of manganese tungstate land possibly iron tungstate), which likely hin
der(s) the formation of highly dispersed oxidic promoters such as those in
iron- and manganese-promoted sulfated zirconia. (C) 2000 Academic Press.