Anew, highly sensitive and selective catalytic kinetic method (CKM) for determination of osmium (VIII) has been established based on its catalytic effect on the oxidation of thionine dye by hydrogen peroxide in alkaline medium. The reaction has been followed spectrophotometrically by measuring the decrease in the absorbance band of thionine at 600 nm. Under the optimum conditions, the proposed ...

The paper presents a proposition of simulation studies of nitrogen oxide catalytic reduction. The method enables estimating the influence of catalytic reactors on ecological properties of engines in static bench tests (e.g., ECE R49, United Nations Economic Commission for Europe [UN/ECE], 2000; Standard No. ISO 8178-4:1996, International Organization for Standardization [ISO], 1996; Merkisz (19...

Controlling nitrogen oxide (NOX) emissions is still a challenge as increasingly stringent emission limits are introduced. Strict regulations will lead to the need introduce secondary measures even for boilers with bubbling fluidized bed (BFB), which generally characterized by low NOX emissions. Selective non-catalytic reduction has lower investment costs compared other reduction, but temperatur...

Platinum’s (Pt) poisoning effect on Cu-SSZ-13 and its regeneration were investigated. The Pt enhanced the parallel reactions, such as NH3 oxidation NO which decreased deNOx activities. In temperature range below 330 °C, deactivation of by was primarily caused overconsumption NH3, due to NH3-selective reaction, while formation NOx in into NO2 further aggravated degradation when above 460 °C. non...

Humans are significantly perturbing the global nitrogen cycle, leading to excess reactive in environment. Nitrogen oxides as a key species mainly controlled by selective non-catalytic reduction and catalytic reduction. Converting ammonia, defined ReNOx, emerges an alternative method under disparate design concept. However, little is known about its overall environmental performance. In this stu...