TY - JOUR
T1 - Structure and properties of noncrystalline aluminum oxide-hydroxide fluorides
AU - Stosiek, Christoph
AU - Scholz, Gudrun
AU - Schroeder, Sven L M
AU - Kemnitz, Erhard
PY - 2010/4/13
Y1 - 2010/4/13
N2 - The thermal treatment of sol-gel derived aluminum hydroxide fluorides leads to new, X-ray amorphous, macroporous aluminum oxide-hydroxide fluorides. Followed by EA, DTA-TG, XPS, FT-IR, NH3-TPD, BET, XRD, and MAS NMR, it can be shown that the simplified composition of these compounds is "AlFO" and "AlF2O1/2", respectively. These aluminum oxide-hydroxide fluorides exhibit a large number of acid centers. The local structure consists of AlFxOcn-x units (cn, coordination numbers 6, 5, 4), and all sites are partially fluorinated. It can be shown that bridged and terminal F-sites are related to 5- and 6-fold coordinated Al sites. © 2010 American Chemical Society.
AB - The thermal treatment of sol-gel derived aluminum hydroxide fluorides leads to new, X-ray amorphous, macroporous aluminum oxide-hydroxide fluorides. Followed by EA, DTA-TG, XPS, FT-IR, NH3-TPD, BET, XRD, and MAS NMR, it can be shown that the simplified composition of these compounds is "AlFO" and "AlF2O1/2", respectively. These aluminum oxide-hydroxide fluorides exhibit a large number of acid centers. The local structure consists of AlFxOcn-x units (cn, coordination numbers 6, 5, 4), and all sites are partially fluorinated. It can be shown that bridged and terminal F-sites are related to 5- and 6-fold coordinated Al sites. © 2010 American Chemical Society.
U2 - 10.1021/cm903573a
DO - 10.1021/cm903573a
M3 - Article
SN - 0897-4756
VL - 22
SP - 2347
EP - 2356
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 7
ER -