Catalytic destruction of 1,2-dichlorobenzene on V2O5-WO3/Al2O3-TiO2 catalyst.
Studies on the catalytic destruction of 1,2-dichlorobenzene were carried out on a specially constructed semi-technical equipment whose most important element was a catalytic reactor with a monolithic catalyst in the form of 150 x 150 x 100 mm cubes. A catalyst made from cordierite with an active layer composed of Al2O3 - 64 wt%, TiO2 - 26 wt%, V2O5 - 6.6 wt% and WO3 - 3.4 wt% was used. The reactor made it possible to carry out the process in the temperature range 150-350 degrees C, at variable catalyst loading and different velocities of gas flow through the reactor. The content of 1,2-dichlorobenzene in the air was analysed by a chromatographic method. A significant effect of catalyst loading and temperature on 1,2-dichlorobenzene destruction efficiency was observed and no effect of the linear flow velocity through the catalyst on o-dichlorobenzene destruction efficiency was reported. The applied vanadium-tungsten catalyst on a monolithic carrier made from TiO2/gamma-Al2O3 revealed very good activity that resulted in an over 80% efficiency of 1,2-dichlorobenzene destruction at the temperature around 250 degrees C at a very high catalyst loading reaching ca. 8200 h(-1). Additionally, in this study the kinetics of 1,2-dichlorobenzene decomposition was determined, specifying the order of reaction and dependence of the decomposition rate constant on temperature, using a simple power-rate law model.
Wielgosiński
Grzegorz
G
Technical University of Lodz, Faculty of Process and Environmental Engineering, Wolczanska 175, 90-924 Lodz, Poland. wielgos@wipos.p.lodz.pl
Grochowalski
Adam
A
Machej
Tadeusz
T
Pajak
Tadeusz
T
Cwiakalski
Włodzisław
W
D000393:Air Pollutants / Q000737:chemistry*; D000537:Aluminum Oxide / Q000737:chemistry*; D002384:Catalysis; D002722:Chlorobenzenes / Q000378:metabolism*; D002845:Chromatography; D006358:Hot Temperature; D017745:Incineration; D007700:Kinetics; D010087:Oxides / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014414:Tungsten / Q000737:chemistry*; D017968:Vanadium Compounds / Q000737:chemistry*; D014835:Volatilization
D000393:Air Pollutants; D002722:Chlorobenzenes; D010087:Oxides; D017968:Vanadium Compounds; C009495:titanium dioxide; C004726:2-dichlorobenzene; C511604:tungsten oxide; C066075:vanadium pentoxide; D014025:Titanium; D000537:Aluminum Oxide; D014414:Tungsten