# is nitrogen gas a compound

Fig. 1-The pressure of nitrogen gas ðp N2 Þ in equilibrium with the… » Download scientific diagram | The pressure of nitrogen gas ðp N2 Þ in equilibrium with the iron-nitrogen solid solution as a function of the nitrogen content, x N , at 923 K (650 °C) for (a) nitrogen ferrite a-Fe N ½ Š; Fe þ N 2 Ð a-Fe N ½ Š ð Þ and (b) nitrogen austenite (c-Fe N ½ Š; Fe þ N 2 Ð c-Fe N ½ Š). Note the different nitrogen concentration scales in the diagrams. The nitriding potentials (cf. Eq. [3]), corresponding to x N , for nitriding in a NH 3 /H 2 gas mixture at the same temperature and at 1 atm pressure (NH 3 þ Fe Ð a-Fe N ½ Š þ 3=2H 2 ; NH 3 þ Fe Ð c-Fe N ½ Š þ 3=2H 2 ), have been indicated on the abscissa at the top of both figures. The values for p N2 as a function of x N were calculated using the Thermo-Calc software [22] adopting the thermodynamic model for nitrogen in iron presented in Ref. [23]. from publication: Pore Formation Upon Nitriding Iron and Iron-Based Alloys: The Role of Alloying Elements and Grain Boundaries | Pure iron and a series of iron-based Researchgate.net

Automated versus Chemically Intuitive Deconvolution of Density Functional Theory (DFT)-Based Gas-Phase Errors in Nitrogen Compounds » Catalysis models involving metal surfaces and gases are regularly based on density functional theory (DFT) calculations at the generalized gradient approximation (GGA). Such models may have large errors in view of the poor DFT-GGA description of gas-phase… Ncbi.nlm.nih.gov

Industrial Offgas Purification » Catalysts for industrial gas emissions Clariant.com

Effects of red mud on emission control of NOx precursors during sludge pyrolysis: A protein model compound study - PubMed » The nitrogen-containing gases pyrolyzed from sewage sludge can be converted into NO_x compounds, which would cause severe environmental pollution. This study developed a new strategy to reduce the emission of NO_x precursors such as ammonia (NH₃) and hydrogen cyanide ( … Pubmed.ncbi.nlm.nih.gov

Water-durable perovskite-oxynitride supported nickel catalysts for ammonia decomposition » The ammonia decomposition performance of nickel-based catalysts can be significantly improved by supporting them on a perovskite-type oxynitride like h-BaTiO3−xNy, demonstrate researchers from Tokyo Tech in a new study. They found that replacing oxygen sites in the lattice of the support material with N3– ions reduced the operating temperature by over 140oC and increased the efficiency of the catalyst. Eurekalert.org