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Title:SINTEZA NATRIJEVEGA BENZOATA
Authors:ID Mlinarič, Martina (Author)
ID Kovač Kralj, Anita (Mentor) More about this mentor... New window
ID Krajnc, Majda (Comentor)
ID Petek, Aljana (Comentor)
Files:.pdf UNI_Mlinaric_Martina_2010.pdf (7,92 MB)
MD5: 60B1E6C6B52FCCB623827DDEE1B8E222
PID: 20.500.12556/dkum/2821a376-c47c-4e72-9f96-7f8d11a1d682
 
Language:Slovenian
Work type:Undergraduate thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Opravili smo industrijsko raziskovalno delo, sintetizirali smo natrijev benzoat za podjetje Henkel Slovenija d.o.o., saj le tega uporabljajo kot konzervans v kozmetičnih izdelkih, prav tako se uporablja tudi v živilski industriji kot dodatek hrani. Natrijev benzoat (NaC6H5CO2) smo sintetizirali iz natrijevega hidroksida (NaOH) in benzojske kisline (C7H6O2) v šaržnem mešalnem reaktorju pri različnih temperaturah: NaOH + C7H6O2 → NaC6H5CO2 + H2O Zaželjeno je bilo kontinuirno spremljanje spreminjanja koncentracije reaktanta, zato smo poskusili z merjenjem električne specifične prevodnosti. Z merjenjem specifične prevodnosti in z uporabo teorije o močnih elektrolitih smo določili funkcijsko zvezo koncentracije v odvisnosti od časa in določili presnovo reakcije. Prav tako smo sintezo analizirali s titracijo in tudi dobili analogne rezultate kot pri merjenju specifične prevodnosti. Dobljeni produkt smo identificirali z infrardečo (IR) spektroskopijo, ga primerjali s standardom natrijevega benzoata in ugotovili, da mu povsem ustreza. V podjetju Henkel Slovenija d.o.o. bodo še sledile nadaljne raziskave proizvodnje natrijevega benzoata, ki bodo prav tako strogo zaupne.
Keywords:sinteza natrijevega benzoata, močni elektroliti, električna specifična prevodnost, infrardeča spektroskopija (IR)
Place of publishing:Maribor
Publisher:[M. Mlinarič]
Year of publishing:2010
PID:20.500.12556/DKUM-17025 New window
UDC:661.8'078.2(043.2)
COBISS.SI-ID:14790678 New window
NUK URN:URN:SI:UM:DK:1FD78H8C
Publication date in DKUM:14.12.2010
Views:3707
Downloads:185
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Secondary language

Language:English
Title:SYNTHESIS OF SODIUM BENZOATE
Abstract:We carried out an industrial research work, where we synthesized sodium benzoate for Henkel Slovenia Ltd., since they use this as a preservative in cosmetics, and it is also used in the food industry as food additive. Synthesis of sodium benzoate (NaC6H5CO2) was carried out from sodium hydroxide (NaOH) and benzoic acid (C7H6O2) in the batch stirred reactor at different temperatures: NaOH + C7H6O2 → NaC6H5CO2 + H2O Desirable was following-up continuing changing of reactant concentration, therefore we tried with measuring of electrical conductivity. With measuring the conductivity and by using the theory of strong electrolytes, we determined the functional relationship of concentration versus time and thereby determine metabolism of reaction. We also analyzed the synthesis by using the titration and also got analogous results. In the end we obtained a product identified by infrared (IR) spectroscopy. In the company Henkel Slovenia Ltd., further researches on production of sodium benzoate will follow, which will also be, strictly confidential.
Keywords:synthesis of sodium benzoate, strong elektrolytes, electrical specifical conductivity, infrared spectroscopy (IR)


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