Title
Sinteza biodizela na aktiviranom katalizatoru na bazi CaO: optimizacija procesnih parametara i efekti korišćenja biodizela : doktorska disertacija
Creator
Ljupković, Radomir B. 1984-
Copyright date
2014
Object Links
Select license
Autorstvo-Nekomercijalno-Bez prerade 3.0 Srbija (CC BY-NC-ND 3.0)
License description
Dozvoljavate samo preuzimanje i distribuciju dela, ako/dok se pravilno naznačava ime autora, bez ikakvih promena dela i bez prava komercijalnog korišćenja dela. Ova licenca je najstroža CC licenca. Osnovni opis Licence: http://creativecommons.org/licenses/by-nc-nd/3.0/rs/deed.sr_LATN. Sadržaj ugovora u celini: http://creativecommons.org/licenses/by-nc-nd/3.0/rs/legalcode.sr-Latn
Language
Serbian
Cobiss-ID
Theses Type
PhD thesis
Other responsibilities
mentor
Zarubica, Aleksandra 1975-
član komisije
Bojić, Aleksandar 1966-
član komisije
Miljković, Milena 1960-
član komisije
Gadžurić, Slobodan
član komisije
Milićević, Dragan
Academic Expertise
Prirodno-matematičke nauke
Academic Title
-
University
Univerzitet u Nišu
Faculty
Prirodno-matematički fakultet
Group
Odsek za hemiju
Title translated
SYNTHESIS OF BIODIESEL OVER ACTIVATED CaO-BASED CATALYST:
OPTIMISATION OF PROCESS PARAMETERS AND EFFECTS OF USING BIODIESEL
Publisher
Niš : [R. B. Ljupković]
Format
PDF/A (200 listova)
description
Umnoženo za odbranu.
Univerzitet u Nišu, Prirodno-matematički fakultet, Departman za hemiju, 2014.
Bibliografija: listovi 159-170.
Rezime ; Summary.
description
Applied chemistry
Abstract (en)
The influence of the physicochemical properties of a series of
CaO catalysts activated at different temperatures on the
biodiesel production was investigated. These catalysts show
dissimilar yields in the transesterification of triglycerides with
methanol. We have found significant relationships between
structural properties (the type of the pore system, the typical
CaO crystal phase and the sizes of crystallites (up to 25 nm),
the minimal weight percentage of CaO phase, the total surface
basicity and potential existence of two types of basic active
sites) of CaO prepared and activated by means of thermal
treatment at highest temperature and catalytic efficiency.
Benefits of this catalyst are short contact time, standard
operating temperature and atmospheric conditions, relatively
low molar ratios and small catalyst loading. These all together
resulted in a very high biodiesel yield of high purity. The
properties of different biodiesel (obtained with the use of the
prepared CaO catalyst) blends with different diesel and
biodiesel ratios indicate that the higher the fraction of biodiesel
fuel the better the achieved fuel properties according to the EU
standards. A significant reduction of CO2 and CO emissions
and only a negligible NOx increase occurred when blends with
an increased biodiesel portion was used. The use of biodiesel
derived blends, and the eventual complete replacement of fossil
fuels with biodiesel as a renewable, alternative fuel for diesel
engines, would greatly contribute to the reduction of
greenhouse gases emissions.
Authors Key words
Biodizel,transеsterifikacija,
kalcijum-oksid, katalizator,
emisija gasova staklene bašte
Authors Key words
biodiesel production, CaO catalyst, greenhouse gases emission,
structural catalytic properties
Classification
678
Subject
669
Subject
66
Type
Elektronska teza
Abstract (en)
The influence of the physicochemical properties of a series of
CaO catalysts activated at different temperatures on the
biodiesel production was investigated. These catalysts show
dissimilar yields in the transesterification of triglycerides with
methanol. We have found significant relationships between
structural properties (the type of the pore system, the typical
CaO crystal phase and the sizes of crystallites (up to 25 nm),
the minimal weight percentage of CaO phase, the total surface
basicity and potential existence of two types of basic active
sites) of CaO prepared and activated by means of thermal
treatment at highest temperature and catalytic efficiency.
Benefits of this catalyst are short contact time, standard
operating temperature and atmospheric conditions, relatively
low molar ratios and small catalyst loading. These all together
resulted in a very high biodiesel yield of high purity. The
properties of different biodiesel (obtained with the use of the
prepared CaO catalyst) blends with different diesel and
biodiesel ratios indicate that the higher the fraction of biodiesel
fuel the better the achieved fuel properties according to the EU
standards. A significant reduction of CO2 and CO emissions
and only a negligible NOx increase occurred when blends with
an increased biodiesel portion was used. The use of biodiesel
derived blends, and the eventual complete replacement of fossil
fuels with biodiesel as a renewable, alternative fuel for diesel
engines, would greatly contribute to the reduction of
greenhouse gases emissions.
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