| Title |
Cu-Al-O system: catalytic coatings obtained by the activated thermo-chemical condensate deposition method |
| Another Title |
Cu-Al-O sistema: katalizinių dangų, suformuotų aktyvintu terminiu-cheminiu kondensato nusodinimo metodu, tyrimas. |
| Authors |
Babilius, Kazys ; Babilius, Artūras |
| Full Text |
|
| Is Part of |
Materials science = Medžiagotyra.. Kaunas : Technologija. 2008, vol. 14, no. 1, p. 23-28.. ISSN 1392-1320. eISSN 2029-7289 |
| Keywords [eng] |
Coatings ; Nanocrystalline ; Cu-Al-O ; γ-Al2O3 ; Adhesion ; Resistance to acids ; Morphology ; X-ray diffraction ; Crystallite size ; CO and NO catalysts |
| Abstract [eng] |
Cu-Al-O type catalytic coatings of controlled thickness were obtained by the activated thermo-chemical condensate deposition method (AT-CCD), without formation of metal underlayer, straight on the strip steel OC-404 of 40 μm thickness, which temperature did not exceed 250 °C during coating formation. After thermal treatment, following investigations of the system “coating-substrate” were made: adhesion, resistance to chemical effect in acids, phase composition, size of crystallites, morphology and elemental composition of the surface. Given catalyst assessment temperature up to 275 °C, relatively small gas flows Qgas = 0.5 l/min and large oxygen amount O2 = 20 %, the catalyst (CO oxidation) begins to operate at T5 = 75 °C, reaches 50 % conversation at T50 = 140 °C, and maximum conversion is obtained at 250 °C. Given catalyst assessment temperature up to 600 °C, relatively big gas flows Qgas = 2.75 l/min and small oxygen amount O2 = 0.2 %, the catalyst begins to operate at T5 = 220 °C, reaches 50 % conversation at T50 = 300 °C. Maximum conversion – CO = 92 % and NOx = 100 % – is obtained at 400 °C. |
| Published |
Kaunas : Technologija |
| Type |
Journal article |
| Language |
English |
| Publication date |
2008 |
| CC license |
|
