Title
Sulfatima i fosfatima modifikovan ZrO[sub]2 kao katalizator u izabranim industrijski značajnim petrohemijskim procesima
Creator
Stojković, Nikola I. 1983-
Copyright date
2017
Object Links
Select license
Autorstvo-Nekomercijalno-Bez prerade 3.0 Srbija (CC BY-NC-ND 3.0)
License description
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Language
Serbian
Cobiss-ID
Theses Type
Doktorska disertacija
description
Datum odbrane: 03.10.2017.
Other responsibilities
mentor
Zarubica, Aleksandra 1975-
član komisije
Bojić, Aleksandar 1966-
član komisije
Grahovac, Zora 1953-
član komisije
Ljupković, Radomir
član komisije
Momčilović, Milan
Academic Expertise
Prirodno-matematičke nauke
Academic Title
-
University
Univerzitet u Nišu
Faculty
Prirodno-matematički fakultet
Group
Odsek za hemiju
Alternative title
Sulphated and phosphated zirconia as catalysts in selected industrially significant petrochemical processes
Publisher
[N. I. Stojković]
Format
239 listova
description
Biografija [autora]: listovi 232-233;
Bibliografija: listovi 199-225.
description
Applied and Industrial Chemistry
Abstract (en)
New rules connected with gasoline have banned many additives, so it is
becoming increasingly difficult to maintain a high octane value of the fuel
while simultaneously respecting the imposed limitations. Thus the reactions
of n-alkane isomerization to yeild higher octane numbers gasolines have
increased importance. Biodiesel is widely used as a fossil diesel substitute,
mainly because of its ecological value and because there is no need for
changing the existing motors in any way. However, industrial production of
biodiesel still suffers from a number of ecological and economical setbacks.
Q4.16.01 - Izdawe 1
ZrO2 is a catalyst which is widely used in industry, mainly because of its
favorable textural, structural, morphological and surface properties. It can
easily be modified with acidic groups and metals. The catalyst modified in
such a way has shown certain properties which make it suitable for use in
(in)directly petrochemically important industrial processes such as
isomerization of n-alkanes and transesterification of vegetable oils. In this
dissertation, ZrO2 was modified with sulfates and phosphates and then
characterized in detail and its properties were compared to the unmodified
catalyst.
Catalyst samples were tested in the reactions of isomerization of n-pentane
and n-hexane, as well as the reaction of transesterification of sunflwoer oil
with methanol. Reactions were performed under a wide range of conditions
in order to determine the influence of a large number of reacton parameters
on the flow and yield of the reaction. Kinetics of reactions were also
examined and stability of the acid groups on the catalyst surface was
determined under realistic conditions. Catalyst properties were then
correlated with their activities in order to determine the influence that the
particular property has on the efficiency of the catalyst and thus its yield.
Authors Key words
Izomerizacija, Sulfati, Transesterifikacija, Fosfati,
Cirkonijum(IV)-oksid
Authors Key words
Isomerization, Phosphate(s), Sulfate(s), Transesterification, Zirconia
Classification
549.76+666.195+544.478]:665.71
Subject
549.755+666.195+544.478]:665.71
Subject
P305; P352; P360; P400; T150
Type
Elektronska teza
Abstract (en)
New rules connected with gasoline have banned many additives, so it is
becoming increasingly difficult to maintain a high octane value of the fuel
while simultaneously respecting the imposed limitations. Thus the reactions
of n-alkane isomerization to yeild higher octane numbers gasolines have
increased importance. Biodiesel is widely used as a fossil diesel substitute,
mainly because of its ecological value and because there is no need for
changing the existing motors in any way. However, industrial production of
biodiesel still suffers from a number of ecological and economical setbacks.
Q4.16.01 - Izdawe 1
ZrO2 is a catalyst which is widely used in industry, mainly because of its
favorable textural, structural, morphological and surface properties. It can
easily be modified with acidic groups and metals. The catalyst modified in
such a way has shown certain properties which make it suitable for use in
(in)directly petrochemically important industrial processes such as
isomerization of n-alkanes and transesterification of vegetable oils. In this
dissertation, ZrO2 was modified with sulfates and phosphates and then
characterized in detail and its properties were compared to the unmodified
catalyst.
Catalyst samples were tested in the reactions of isomerization of n-pentane
and n-hexane, as well as the reaction of transesterification of sunflwoer oil
with methanol. Reactions were performed under a wide range of conditions
in order to determine the influence of a large number of reacton parameters
on the flow and yield of the reaction. Kinetics of reactions were also
examined and stability of the acid groups on the catalyst surface was
determined under realistic conditions. Catalyst properties were then
correlated with their activities in order to determine the influence that the
particular property has on the efficiency of the catalyst and thus its yield.
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