Search results for "OVT"
showing 6 items of 6 documents
Reaction products and pathways in the selective oxidation of C-2-C-4 alkanes on MoVTeNb mixed oxide catalysts
2010
[EN] The catalytic properties of MoVTeNbO catalysts during the selective oxidation of short chain alkanes and olefins (C-2-C-4) have been comparatively studied The main reaction products have been ethylene from ethane acrylic acid from propane maim anhydride from n-butane and methacrolein from isobutane FTIR studies of the adsorption of the main reaction products i e olefins and aldehydes over MoVTeNbO catalyst has been carried out Accordingly the reaction pathway is explained on the basis of the characteristics of the alkane fed the stability and reactivity of both the intermediates and the reaction products and the nature of the catalytic sites involved in each reaction (C) 2010 Elsevier …
Rakenteisten liiketoimintadokumenttien visualisointi : XSL:n soveltaminen organisaatioiden välisiin XML-dokumentteihin
2003
Evolution of the optimal catalytic systems for the oxidative dehydrogenation of ethane: The role of adsorption in the catalytic performance
2022
Three samples that correspond to the evolution of optimal catalytic systems for the oxidative dehydrogenation of ethane have been synthesized and compared in terms of catalytic behavior and adsorption properties: (i) vanadium oxide supported on alumina, (ii) Sn-promoted NiO, and (iii) multicomponent MoVTeNbO with the M1 structure. The main difference in catalytic performance lies in the extent of the overoxidation of the ethylene formed, following the order VOx/Al2O3 > NiSnOx > MoVTeNb-M1. Accordingly, the selectivity to ethylene at medium and high ethane conversion follows the order MoVTeNb-M1 > NiSnOx > VOx/Al2O3. These results are confirmed by the relative reaction rates observed for the…
Pamatskolas skolēnu vispārējās fiziskās sagatavotības nozīme dažādos sporta veidos
2017
Diplomdarba tēma - vispārējās fiziskās sagatavotības ietekme uz dažādu sporta veidu pārstāvjiem pamatskolas vecuma posmā. Darba mērķis – Noskaidrot kāda ir vispārējās fiziskās sagatavotības nozīme pamatskolas vecuma bērniem, testēt un analizēt iegūtos rezultātus un progresu. Darbs sastāv no ievada, teorētiskās daļas, praktiski pētnieciskās daļas, secinājumiem un rezultātu analīzes. Teorētiskajā daļā tika pētīta pedagoģiskā, sporta un vispārējās fiziskās sagatavotības literatūra. Pamatskolas mācību programmas standarts, tā iesējamās variācijas un sporta veidu dažādība. Praktiski pētnieciskajā daļā 6. klašu skolēni ar anketēšanas metodi tika sadalīti sporta veidu grupās. Tika veikti sākuma vi…
"I martiri della civiltà greca”: M.I. Rostovtzeff sugli Acta Alexandrinorum
2005
L’articolo analizza l’interpretazione degli Acta Alexandrinorum fornita da M.I. Rostovtzeff, dai quali emergerebbero gli alti ideali della cultura greca e della tradizione di Alessandria di fronte all’imperium Romanum.