Development of new material for the environmental-friendly energy generation processes

The aim of this study was to develop a new material which has high hydrogen storage capacity and hydrogen absorption/desorption rate. This material, which is based on cobalt powder onto which palladium was chemically deposited can be used in environmentally friendly energy generation processes, thus ensuring preventive protection of human health. Hydrogen absorption was investigated using differential scanning calorimetry (DSC) and by measuring hydrogen pressure under isothermal and non-isothermal conditions in a chamber containing either pure cobalt powder either cobalt powder onto which palladium was chemically deposited (Co-0.003 Pd). The mechanism of hydrogen absorption has been described. It was noticed that palladium catalyses hydrogen absorption by dissociating the adsorbed H2 molecules into H atoms more rapidly on its own atoms than on cobalt ones. The catalysis of dissociation of H2 molecules enabled hydrogen absorption into Co-0.003 Pd powder to occur at lower temperatures. The results of this study enable integration of technological and public health investigation in order to ensure preventive protection of human health through enviromental protection. Cilj ovoga istrazivanja bio je da se razvije nov materijal koji poseduje visok kapacitet za skladistenje vodonika i brzinu apsorbcije/desorpcije vodonika. Ovaj materijal, koji se bazira na prahu kobalta, na koji je hemijski deponovan paladijum moze biti koriscen u procesima dobijanja energije, koji ne zagadjuju zivotnu sredinu, a omogucavaju efikasno ocuvanje javnog zdravlja. Apsorpcija vodonika je proucavana primenom diferencijalne skenirajuce kalorimetrije, kao i merenjem pritiska vodonika u prostoru sa cistim prahom kobalta i praha na koj je hemijski deponovan paladijum (Co-0.003 Pd) u izotermskim i neizotermskim uslovima. Opisan je mehanizam apsorpcije vodonika. Utvrdjeno je da paladijum katalizuje apsorpciju vodonika tako sto se na njegovim atomima lociranim na povrsini Co-praha, odvija znatno brze disocijacija adsorbovanih molekula vodonika nego na Co-atomima. Kataliza reakcije disocijacije omogucava apsorpciju H2 u Co 0,003Pd prahu na nizim temperaturama uz znatno vecu entalpiju apsorpcije. Rezultati ovog istrazivanja omogucavaju integraciju tehnoloskih istrazivanja i istrazivanja u domenu ocuvanje javnog zdravlja, cime se omogucava preventivna zastita zdravlja kroz ocuvanje covekove okoline. PR Projekat Ministarstva nauke Republike Srbije, br. 172057