Preparation and morphological characterization of a catalytic soot oxidation SiC foam filter

Caglar, Basar
Üner, Deniz
The coating characteristics of Pb-Co mixed metal oxide soot oxidation catalysts over a SiC foam filter were studied. The coating was done via incipient wetness impregnation of a slurry with Pb/Co weight ratio = 2. The coating was accomplished by 3 consecutive impregnation-drying-calcination cycles. After each cycle surface structure and composition were monitored by scanning electron microscope (SEM). SEM analysis revealed that the surface composition of Pb was high on the high porosity region and surface composition of Co was high on the low porosity region inside the filter. These overlayers were tested for their soot oxidation ability by depositing paraffin soot from a candle flame, thermally oxidizing, and collecting SEM pictures before and after oxidation. SEM pictures after soot deposition/oxidation cycles revealed that high amounts of Pb were necessary for efficient removal of soot. However, Pb composition of the surface decreased due to the evaporative loss of Pb.


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Oren, EE; Tas, AC (1998-05-06)
Aqueous solutions of lead chloride (PbCl2), zirconium oxychloride (ZrOCl2.8H(2)O) and titanium tetrachloride (TiCl4), in appropriate volumetric amounts, were used as the starting materials in the synthesis of phase-pure Pb(Zr0.52Ti0.48)O-3 powders. Preparation of the phase-pure PZT powders were achieved, in the presence of urea (CH4N2O), by the chemical powder synthesis route of homogeneous precipitation.
Characterization and Electrical Conductivity of Poly(ethylene glycol)/Polyacrylonitrile/Multiwalled Carbon Nanotube Composites
Aqeel, Salem M.; Kucukyavuz, Zuhal (Wiley, 2011-01-05)
Polymer blends based on poly(ethylene glycol), polyacrylonitrile, and multiwalled carbon nanotubes (MWNTs) were prepared by the solvent cast technique from the dispersion of the MWNTs in the concentration range 0-3.45 wt %. The interaction of the MWNTs with the polymer blend was confirmed by a Fourier transform infrared (FTIR) spectroscopy study. The thermal properties of the polymer blend with the MWNTs were carried out by means of differential scanning calorimetry (DSC). It was evident from DSC that the p...
Preparation and Characterization of Mixed Halide MAPbI(3-x)Cl(x) Perovskite Thin Films by Three-Source Vacuum Deposition
Babaei, Azin; Soltanpoor, Wiria; Tesa-Serrate, Maria A.; Yerci, Selçuk; Sessolo, Michele; Bolink, Henk J. (2020-04-01)
Chloride is extensively used in the preparation of metal halide perovskites such as methylammonium lead iodide (MAPbI(3-x)Cl(x)), but its persistence and role in solution-processed materials has not yet been rationalized. Multiple-source vacuum deposition of perovskites enables a fine control over thin-film stoichiometry and allows the incorporation of chemical species irrespective of their solubility. Herein, the first example of mixed MAPbI(3-x)Cl(x) thin films prepared by three-source vacuum deposition i...
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Tosun, Ayşegül; Tanyeli, Cihangir; Department of Chemistry (2002)
ree nitroxyl radicals are popular in alcohol oxidation reactions as catalysts. The most useful ones are TEMPO (2,2,6,6-tetramethylpiperidinoxyl) derivatives. In this thesis, TEMPO based polymeric catalyst systems were synthesized. The most important property of these catalysts are being homogeneous and recyclable systems. In the synthetic strategy, the monomer systems which are needed for polymerization were synthesized from easily available norbornene derivatives via Mukaiyama and DCC coupling reactions. T...
Synthesis and characterization of waterborne and phosphorus-containing flame retardant polyurethane coatings
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Phosphorus-containing flame retardant water-dispersed polyurethane coatings were produced by incorporating different amounts of a phosphorus compound onto the polyurethane main chain. The novel phosphorus containing compound (phosphorus phenyl dihydroxy) was synthesized in three steps using benzaldehyde, pentaerythritol, phenyl phosphonic dichloride, and acetic acid.
Citation Formats
B. Caglar and D. Üner, “Preparation and morphological characterization of a catalytic soot oxidation SiC foam filter,” TURKISH JOURNAL OF CHEMISTRY, pp. 487–492, 2007, Accessed: 00, 2020. [Online]. Available: