Interkalasi Oligomer Hidroksil-kromium pada Kaolin Alam Tatakan
ABSTRACT: Preparation of a
kaolin-hydroxyl chromium composite and characterization of its physico-chemical
properties were conducted. The olygomer hydroxyl-chromium was prepared by
adding Na2CO3 to 0.1 M chromium nitrate solution (ratio OH/Cr = 2) and then
dried at 110 oC and 400 oC for 4 h. Characterization of kaolin-hydroxyl
chromium composite includes determination of acidity, functional groups, basal spacing,
and surface area (BET-N2 sorption analyzer). The result showed that
intercalation of hydroxyl chromium resulted in the decreasing of basal spacing
but increased the specific surface area of kaolin. Drying of the intercalated
kaolin at 400 oC decreased surface area, total volume pore and pore radius.
FT-IR spectra showed that hydroxyl-chromium detected at wavelength of 2925 and
2855 cm-1.
Keywords: natural kaolin,
intercalation, olygomer hydroxyl-chromium, kaolin-hydroxyl chromium composite
Penulis: Rodiansono, Reda
Ariyantie, Abdullah
Kode Jurnal: jpkimiadd080104
