Dehydrogenation of Cyclohexanol
1295
2
?
7
23 K formation of stabilized Fe species and increased
selectivity to cyclohexanone was observed on FeTiMCM-
1 materials. The highest catalytic activity and selectivity
4
to cyclohexanone could be obtained for the FeTiMCM-41
sample with the highest metal content (Si/Ti = 10 and
Si ? Ti/Fe = 15), where increased Lewis acidity was
4
?
2?
evidenced and formation of Ti /Fe
assumed.
ion pairs was
Acknowledgments Financial support by the project DO02-
95_2008 and the Bulgarian–Hungarian Inter-academic Exchange
Agreement are greatly acknowledged.
2
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Mono- and bicomponent, iron and titanium containing
MCM-41 materials were synthesized by sol–gel method.
2
3
?
4?
Formation of Fe and Ti ions incorporated into the
silica structure, located in tetrahedral and octahedral posi-
tions was registered for all studied materials. All metal
modified materials showed high catalytic activity in
cyclohexanol conversion. After reduction in hydrogen at
2
3
3
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123