
211Conversion of Cellulose and Cellulose-Derived Platform Chemicals
This is further exemplied by the results of Ojeda et al. who reported on the gas
phase oxidation of FF to maleic anhydride (MAH) catalyzed by VO
x
/Al
2
O
3
[107].
Catalysts with varying VO
x
surface densities (at
v
/nm
2
) were prepared by incipient
wetness impregnation of NH
3
VO
3
on γ-alumina (134 m
2
g
−1
) and calcination at 500°C.
The resulting catalysts were screened at 280°C with a furfural/O
2
(1.6 kPa furfural,
2.5 kPa O
2
) gas mixture and optimal conversion and selectivity were obtained for a
catalyst with VO
x
surface density of 10 at
V
/nm
2
. Further optimization of temperature
(320°C) ...