877399-00-3, Name is (R)-5-Bromo-3-(1-(2,6-dichloro-3-fluorophenyl)ethoxy)pyridin-2-amine, molecular formula is C13H10BrCl2FN2O, belongs to pyridine-derivatives compound, is a common compound. In a patnet, author is Guo, Shuai, once mentioned the new application about 877399-00-3, Computed Properties of C13H10BrCl2FN2O.
Effects of calcium oxide on nitrogen oxide precursor formation during sludge protein pyrolysis
The addition of CaO has been used to reduce the harmful NOx precursors (NH3 and HCN) generated by the pyrolysis of municipal sewage sludge. However, the underlying reduction mechanism remains unclear. To address this issue, we systematically investigated the effects of temperature and CaO addition on the generation of NH3 and HCN during the pyrolysis of sludge protein and a model protein. With increasing temperature from 300 to 900 degrees C, the inhibitory effect of CaO on NH3 emission was observed to fluctuate, maximizing at 400 degrees C. The inhibition was attributed to the reaction of CaO with nitrogen in the produced char to form CaCxNy, resulting in enhanced fixation of the char pyridines and nitriles. The nitriles exhibited high thermal stability and inertness to CaO. The increased nitrile content at high temperatures was attributed to the formation of the species from amines and N-containing heterocycles. The CaCx produced by the thermal decomposition of CaCxNy above 700 degrees C was found to increase P-N fixation and decrease NH3 formation. The observed poor inhibitory effect of CaO on NOx precursor formation at 650 degrees C was attributed to the production of NH3 via HCN hydrolysis. Because HCN directly reacted with CaO, the inhibition of HCN formation was highest at 650-900 degrees C, preventing the conversion of char nitriles into HCN. (C) 2019 Elsevier Ltd. All rights reserved.
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Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem