Anion Tetratitanat Berlapis Terpilarkan Spesies Oligomer Polikation Kromium(III)
ABSTRACT: Intercalation of
oligomeric chromium(III) polycation species in layered tetratitanates was
prepared by three steps: 1) ion-exchange of H+ for K+ in potasium
tetratitanates, 2) intercalation of n-alchylamine (n-propylamine, n-butylamine,
n-amylamine, and n-hexylamine) compounds in layered hydrogen tetratitanates by
adding an aqueous solution of 5M
n-alchylamine to hydogen titanates with
stiring at room temperature, and 3)
intercalation of oligomeric chromium(III) polycation species by mixing
butylamine-intercalated tetratitanates with an aqueous solution of CrCl3.6H2O
at pH various. The procedure was carried out by Chimie Douce method. The
results showed that all of n-alchylamine-intercalated tetratitanates
crystallize on monoclinic crystal system with the Bravais lattice C. The hight
intensity of the first peaks (200)
indicated that butylamine and amylamine-intercalated tetratitanates have
a remarkably high crystallinity without impurities phase. The interlayered
distance (d) and the lattice parameter
projected along a increase with increasing the amount of C-atoms in
n-alchylamine. At pH=1.3, [CrCl(H2O)5]2+ or [CrCl2(H2O)4]+ species was pillared
more efective in layered tetratitanates than [Cr(H2O)6]3+ spesies and just one
spesies, Cr(H2O)6]3+ at pH=1.7. On the
contrary, [Cr(OH)(H2O)5]2+ or [Cr(OH)2(H2O)4]+ was intercalated more effevtive than [Cr(H2O)6]3+
species at pH=5.3.
Penulis: Hari Sutrisno, Endang
Dwi Siswani
Kode Jurnal: jpkimiadd070078
