20.500.12556/RUL-168507 Catalytic hydrodenitrogenation, hydrodeoxygenation and hydrogenation reactions of amides, amines, and nitriles over NiMoS$_X$/Al$_2$O$_3$ catalysts mechanisms, kinetics and transport The presence and possibility of removal of nitrogen from the bio-based feedstock is a major challenge for efficient use of these sources. Herein, we propose a unique micro-kinetics model which enables the fundamental competing selective mechanism elucidation using sulfided NiMo/Al$_2$O$_3$, a conventional hydrotreating catalyst. The model was built based on varying temperature and hydrogen pressure. Both, homogeneous and heterogeneous reactions are described in presence and absence of hydrogen with hexadecanamide and hexadecanamine as model compounds. We show that the process can undergo hydrodeoxygenation or hydrodenitrogenation reaction path based on the water/ammonia presence in the reaction mixture. This finding shows that the presence of nitrogen in feedstocks can be manipulated by influencing equilibria. Detailed catalyst characterization and mass transfer analysis support the study. The results represent the foundation for the understanding of catalytic and non-catalytic relationships between the reactants. It was elucidated that the influence of process parameters, including the small molecules presence, can direct of the process selectivity towards amines, dimers, and alkanes. kinetics hydrodenitrogenation fatty amides NiMoS mechanisms of hydrodenitrogenation kataliza katalizatorji vodik amonijak true false true Angleški jezik Slovenski jezik Članek v reviji 2025-04-16 10:05:55 2025-04-16 10:05:56 2025-04-17 04:54:33 0000-00-00 00:00:00 2025 0 0 14 str. art. 162112 Vol. 511 1 May 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 544.3/.4 1873-3212 10.1016/j.cej.2025.162112 232478467 1-s2.0-S1385894725029389-main.pdf 1-s2.0-S1385894725029389-main.pdf 1 60085CAD6E008FFD220310BFDAE4CE5A 33c3bbc662bafb45fdddb85900d7630180c76f1e08368a3cc16bfe5f63da30e3 4ca5e5de-1a99-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=203470 https://www.sciencedirect.com/science/article/pii/S1385894725029389 1 7fa73036-1a98-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=203458 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0