Language: | Slovenian |
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Year of publishing: | 2014 |
Typology: | 2.11 - Undergraduate Thesis |
Organization: | UM FKKT - Faculty of Chemistry and Chemical Engineering |
Publisher: | [D. Kuhar] |
UDC: | 547.472.3(043.2) |
COBISS: | 18248470 |
Views: | 1365 |
Downloads: | 115 |
Average score: | 0 (0 votes) |
Metadata: |
Secondary language: | English |
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Secondary title: | ENZYME-CATALYZED SYNTHESIS OF LACTIC ACID IN NONCONVENTIONAL SOLVENTS |
Secondary abstract: | Enzymatic synthesis of butyl lactate is a reaction of esterification between n-butanol and lactic acid. The reaction was carried out in an nonconventional solvent trifluoromethane in the presence of immobilized enzyme. The reaction can be influenced by the change in pressure, temperature and various weight ratio between the co-solvent n-hexane and the reactants. The main purpose of the diploma was to perform the enzymatic synthesis of butyl lactate in nonconventional solvent trifluoromethane and to determine optimal reaction parameters like pressure, temperature and also to determine the amount of added co-solvent n-hexane. As a biocatalyst, the lipase B from Candida antartica was used. Products and reactants were analyzed by gas chromatography and high performance liquid chromatography. The moisture content was determined by Karl-Fischer titration method. The highest conversion of lactic acid and consecutively the highest production of butyl lactate were achieved at addition of 11 % n-hexane, at 55 ◦ C and 20 MPa. |
Secondary keywords: | P. triangulaributyl lactate;lactid acid;enzyme;supercritical trifluoromethane; |
URN: | URN:SI:UM: |
Type (COBISS): | Bachelor thesis/paper |
Thesis comment: | Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo |
Pages: | X, 38 f. |
ID: | 8727675 |