Catalisadores alternativos empregados na síntese de biodiesel etílico

Resumo

V₂O₅/RHA were prepared from RHA obtained by basic leaching in NaOH (0.1 to 1.0 mol/ L) solution. Montmorillonite clay was pillared with vanadium. XRD data indicated the formation of silica (cristobalite) in the RHA and V₂O₅/RHA. In the montmorillonite clay, modified with vanadium could not indicate ammonium metavanadate and/or vanadium pentoxide, but after calcination it occurred a supposed collapse of the formed pillars.