TY - JOUR
T1 - Dehydratation-rehydratation behaviour of layered double hydroxyde
T2 - a study by X-Ray diffractometry and MAS NMR spectroscopy
AU - Béres, A.
AU - Palinko, I.
AU - Bertrand, J.-C.
AU - B.Nagy, Janos
AU - Kiricsi, Imre
PY - 1998
Y1 - 1998
N2 - MgAl and ZnAl double hydroxides were synthesized and their dehydration-rehydration behaviour was studied by X-ray diffractometry and 27Al magic-angle spinning (MAS) NMR spectroscopy. On dehydration the layered structure collapsed, but treatment in water resulted in partial reconstitution of the original structure. On heat treatment part of the octahedrally coordinated aluminium, typical of layered double hydroxides, became tetrahedrally coordinated. On rehydration some of the tetrahedral aluminium became octahedrally coordinated again.
AB - MgAl and ZnAl double hydroxides were synthesized and their dehydration-rehydration behaviour was studied by X-ray diffractometry and 27Al magic-angle spinning (MAS) NMR spectroscopy. On dehydration the layered structure collapsed, but treatment in water resulted in partial reconstitution of the original structure. On heat treatment part of the octahedrally coordinated aluminium, typical of layered double hydroxides, became tetrahedrally coordinated. On rehydration some of the tetrahedral aluminium became octahedrally coordinated again.
U2 - 10.1016/S0022-2860(96)09558-0
DO - 10.1016/S0022-2860(96)09558-0
M3 - Article
SN - 0022-2860
VL - 410-411
SP - 13
EP - 16
JO - Journal of molecular structure
JF - Journal of molecular structure
ER -