The Malaysian Journal of Analytical Sciences Vol 11 No 1 (2007): 246 – 254

 

 

WOVEN STAINLESS STEEL WIRE MESH SUPPORTED CATALYST

FOR NOX  REDUCTION IN MUNICIPAL SOLID WASTE FLUE (MSW) GAS: SYNTHESIS AND CHARACTERIZATION

 

Kamariah Noor Ismail*, Ku Halim Ku Hamid, Sharifah Aishah S. A. Kadir, Mohibah Musa

and Robert Mikhail Savory

 

Faculty of Chemical Engineering , Universiti Teknologi MARA (UiTM),

40450 Shah Alam, Selangor, Malaysia

 

*Corresponding author: knoor@salam.uitm.edu.my

 

Abstract

This paper present s the synthesis and characterization of a high ly porous and well-adhere catalyst immobilised on a woven stainless steel wire mesh (WSSWM). The prepared catalyst is used to reduce oxide nitrogen, NO_x  in MSW incineration flue gas. A circular wire mesh 90 mm in diameter consisting of a hundred cells per square inch (cpsi) was used as the catalyst support . The surface of the WSSWM was pre-treat ed and passivated by sonicating with 1M inorganic acid for 30 minutes followed by rinsing with distilled water  and drying at 50°C for  3 hours.  The WSSWM was repeatedly dip -coated in a rheologically modified Al₂O₃-SiO₂   slurry until desired loading was attained. Impregnation of vanadium oxide on the wire mesh followed by drying at 102°C for 12 hours and calcining at 500°C for 5 hours, with a heating rate of 4°C/min, yielded the final  NO_x     reduction  catalyst .  Qualitative  porous  analysis   and the crystallinity of  the  impregnated  catalyst  were investigated using Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD), respectively . The adhesion strength of the catalyst was examined using the in-house KH-Adhesion Test Method. Results from catalyst characterization indicate its potential to be used for incinerator flue gas NO_x   reduction.

 

Keywords : wire mesh, Al₂O₃-SiO₂, impregnation, dip-coating, NO_x   reduction, flue gas

 

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