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Chemical Industry and Chemical Engineering Quarterly / CICEQ 2006, vol. 12, br. 3, str. 152-158
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Rastvorljivost mentola u komprimovanom ugljen dioksidu - eksperimentalni podaci i termodinamički model
aInstitute of Chemical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria bInstitute of Chemical Process, Fundamentals, Prague, Czech Republic
e-adresa: sovova@icpf.cas.cz
SažetakU radu se navode novi eksperimentalni podaci i rezultati termodinamičkog modela kojim je definisana rastvorljivost mentola u komprimovanom CO2. Rastvorljivost je merena primenom dinamičke metode, a model je razvijen na osnovu Soave-Redlich-Kwong jednačine stanja za uslove 30-60°C i 66-144 bar. Dobijeni podaci su upoređeni sa do sada publikovanim u literaturi pri čemu su oni koje su objavili Maier i Stephan slažu sa rezultatima ovih ispitivanja ali je istovremeno ukazano i u ovom radu objašnjeno na neslaganje sa podacima koje su ranije objavili Sovova i Jež. Ovaj rad, takođe, po prvi put eksperimentalno verifikuje i teorijskim modelom objašnjava sniženje temperature topljenja mentola u prisustvu ugljen dioksida na pritiscima iznad 60 bara. Eksperimentalni podaci o temperaturi topljenja mentola su određeni poređenjem stvaranja čestica mentola pre i nakon dovođenja mentola u kontakt sa komprimovanim ugljen dioksidom.
Ključne reči
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