Pregled bibliografske jedinice broj: 482550
Preparation of defined pore geometry silica gel with sol-gel method
Preparation of defined pore geometry silica gel with sol-gel method // Book of abstracts ; 13th Ružička days -TODAY SCIENCE - TOMORROW INDUSTRY / Šubarić, Drago (ur.).
Osijek: Prehrambeno tehnološki fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, 2010. str. 15-15 (predavanje, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 482550 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Preparation of defined pore geometry silica gel with sol-gel method
Autori
Dabić, Pero ; Krolo, Petar ; Barbir, Damir ; Marguš, Marija
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Book of abstracts ; 13th Ružička days -TODAY SCIENCE - TOMORROW INDUSTRY
/ Šubarić, Drago - Osijek : Prehrambeno tehnološki fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, 2010, 15-15
ISBN
978-953-7005-22-1
Skup
13th Ružička days -TODAY SCIENCE - TOMORROW INDUSTRY
Mjesto i datum
Vukovar, Hrvatska, 16.09.2010. - 17.09.2010
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
sol-gel method; silica gel; poly (vinyl alcohol)
Sažetak
The work was carried out obtaining porous silica-gel with sol-gel process, with the addition of poly (vinyl alcohol) (PVAL). The silica sol obtaining process was carried out with stoichiometric conditions with the addition of an acidic catalyst and accurately defined period of intense mixing. There were prepared 4 sols at a temperature of 60 °C, with intense mixing and reaction time of 90 minutes. After 12 hours of fostering at ambient conditions, there were added 3, 5, 10 and 15 wt. % PVAL to obtained silica sols and these sols were divided into two series. The first series of samples were dried for 24 hours at 60 °C in a vacuum dryer, while the second series of samples were fostered 12 days at 20 °C in a vacuum dryer with the constant underpressure of 30 kPa. Samples from both series were additionally dried at 130 °C to constant mass and were annealed at 700 °C. Silica gels from both series were crumbled into irregular shape with a diameter up to 5 mm by drying at 130 °C. Silica-gel with a smaller amount of the addition was crumbled into smaller pieces. Silica-gel was prepared with the addition of PVAL and after annealing it was remained with the silica network without organic components and formed pores had the dimensions and geometry of PVAL moleculas.
Izvorni jezik
Engleski
Znanstvena područja
Kemijsko inženjerstvo
POVEZANOST RADA
Projekti:
011-1252970-2254 - Cementni kompoziti i stabilizacija štetnih otpada (NOMACIS) (Krolo, Petar, MZOS ) ( CroRIS)
Ustanove:
Kemijsko-tehnološki fakultet, Split
