Ispitivanje uticaja mehaničke aktivacije na sintezu sistema MgO-TiO2 Stručni rad
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U ovom istraživanju izvršena je mehanička aktivacija smeše magnezijum oksida i titan dioksida u cilju ispitivanja mogućnosti mehanohemijske sinteze magnezijum titanata. Mehanička aktivacija (MA) je vršena tokom 1000 min u visokoenergetskom vibro mlinu sa torzionim oprugama i prstenastim radnim elementima. Nakon ovog vremena, rendgenostrukturna analiza je ukazala na potpunu amorfizaciju smeše polaznih komponenti. Dalja mehanička aktivacija je obustavljena zbog ograničenja u bezbednosti kod dugotrajnog neprekidnog rada reaktora. Nemogućnost sinteze magnezijum titanata objašnjava se suviše niskom negativnom vrednošću Gibsove energije od -25,8 kJ/mol (i pored teorijske mogućnosti da se reakcija odigra), kao i količinom energije unete u sistem tokom mehaničke aktivacije koja je nedovoljna za dobijanje željenog proizvoda. Iako sinteza magnezijum titanata nije ostvarena, dobijeni su značajni rezultati koji identifikuju metode za dalje ispitivanje mogućnosti odvijanja mehanohemijskih reakcija zemnoalkalnih metala i titan dioksida.
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