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NOx photocatalytic degradation on gypsum plates modified by TiO2-N,C photocatalysts

100%
Janus M., Bubacz K., Zatorska J., Kusiak-Nejman E., Czyżewski A., Morawski A. W.
Polish Journal of Chemical Technology
|
2015
|
vol. 17
|
issue 3
8-12
EN
In presented studies the photocatalytic decomposition of NOx on gypsum plates modified by TiO2-N,Cphotocatalysts were presented. The gypsum plates were obtained by addition of 10 or 20 wt.% of different types of titanium dioxide, such as: pure TiO2 and carbon and nitrogen co-modified TiO2 (TiO2-N,C) to gypsum. TiO2-N,C photocatalysts were obtained by heating up the starting TiO2 (Grupa Azoty Zakłady Chemiczne Police S.A) in the atmosphere of ammonia and carbon at the temperature: 100, 300 i 600ºC. Photocatalyst were characterized by FTIR/DRS, UVVis/DR, BET and XRD methods. Moreover the compressive strength tests of modified gypsum were also done. Photocatalytic activity of gypsum plates was done during NOx decomposition. The highest photocatalytic activity has gypsum with 20 wt.% addition of TiO2-N,C obtained at 300ºC.
2
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Optimization of an active phase composition in the low-temperature nitric oxide reduction catalyst

88%
Kułażyński M., Bratek K., Walendziewski J.
Polish Journal of Chemical Technology
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2007
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vol. 9
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issue 3
33-37
EN
In the first research studies series a selection of the quantitative composition of catalyst active phase composition (iron, copper and manganese) deposited on mineral-carbon support was carried out. It was found on the basis of the selection studies series that the best results were attained when copper and manganese were used as catalyst components. The quantitative composition of the denitrogention catalyst was estimated using a statistical method of experiment planning and metals content changed in the range 0.5 - 1.5wt % for both metals. Catalyst activity in nitric oxide reduction by ammonia was determined in the dependence on an active phase composition in the temperature range 100 - 200°C, at GHSV (Gas Hour Space Velocity) 6 000 and 10 000 Nm3/m3h, NO concentration 400 ppm, NH3/NO ratio 1:1. A graphic presentation of the obtained results was made using the UNIPLOT program. The highest activity in nitric oxide reduction by ammonia presented copper - manganese catalysts prepared by the impregnation of mineral-carbon support with active metals salts solutions and calcination after each metal impregnation with copper (up to 1.5 wt %) and manganese (up to 1.5 wt %).
3
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NUMERICAL STUDIES ON THE INFLUENCE OF AIR STAGING ON THE TEMPERATURE OF FLUE GAS AND EMISSION OF GASES IN THE COMBUSTION CHAMBER OF OP 230 BOILER

75%
Hernik B., Jagodzińska K., Matuszek D.
Chemical and Process Engineering
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2018
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vol. 39
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issue 1
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