154-158Sepiolite was
used as support for ruthenium catalyst. Non-promoted Ru/Sep is proved to be effective
for ammonia synthesis. The catalyst was characterized by XRD, XPS and nitrogen
adsorption isotherms. Ru is reduced completely and is
present in few
oxidation states on the support. Using non-aqueous solvent instead of water in
the impregnation process on basic support, the Ru dispersion could be increased.
Chlorine-free Ruthenium catalyst was prepared using RuCl3 by washing
with ammonia solution