Sol–gel–xerogel evolution investigated by electroactive probes in silica and transition-metal oxide based gels

1992 ◽  
Vol 2 (12) ◽  
pp. 1293-1300 ◽  
Author(s):  
Pierre Audebert ◽  
Pascal Griesmar ◽  
Philippe Hapiot ◽  
Clément Sanchez
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Sol Gel ◽  
Transition Metal Oxide

Introduction of Organic Moieties into Transition-Metal Oxide Matrices via Phosphonate Groups

1998 ◽  
Vol 519 ◽  
Author(s):  
P.H. Mutin ◽  
C. Delenne ◽  
D. Medoukali ◽  
R. Corriu ◽  
A. Vioux
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Phosphonic Acid ◽  
Sol Gel ◽  
Transition Metal Oxide ◽  
Metal Alkoxide ◽  
Hydrolytic Condensation ◽  
Metal Phosphonates ◽  
Or Groups ◽  
Sol Gel Process

AbstractTransition metal oxide / phenylphosphonate hybrids with M/P ratios ranging from 1 to 5, (M= Ti, Zr) and metal phosphonates (M/P = 0.5) have been prepared by a sol-gel process involving in a first step the non-hydrolytic condensation between metal alkoxide and phosphonic acid leading to M-O-P bonds, followed by the hydrolysis-condensation of the remaining M-OR groups. The composition, texture and structure of the materials were investigated using EDX, TGA, XRD, IR and 31P NMR.

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