Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network

  Advanced Search  

Catalytic Transformation of Toluene over High Acidity Y-Zeolite Based S. Al-Khattaf*

Summary: Catalytic Transformation of Toluene over High Acidity Y-Zeolite Based
S. Al-Khattaf*
Chemical Engineering Department, King Fahd University of Petroleum & Minerals
Dhahran 31261, Saudi Arabia
Catalytic transformation of toluene has been investigated over Y-zeolite based catalysts in a
novel riser simulator at different operating conditions. A number of experiments were
carried out in the temperature range of 400-500o
C to understand the transformation of
toluene over high acidity Y-based zeolite catalyst (H-Y). It has been observed that toluene
can transform either through disproportionation producing benzene and xylene isomers or
through dealkylation producing gases and benzene. The rate of both reactions essentially
depends on reaction temperature. Dealkylation reaction was found to be favored by high
temperature. The benzene/xylene ratio was found to increase with temperature due to the
high xylenes dealkylation rate. Toluene transformation was found to be controlled by both
Y-zeolite acidity and reaction temperature. While high acidity and high reaction temperature
favor toluene dealkylation, medium acidity and low reaction temperature favor toluene
disproportionation. Pseudo-homogenous first order kinetic was used to model toluene
conversion. Two different deactivation functions were included in this model and the kinetic


Source: Al-Khattaf, Sulaiman - Department of Chemical Engineering, King Fahd University of Petroleum and Minerals


Collections: Fossil Fuels; Engineering