Affiliation:
1. Faculty of Science and Mathematics, Department of Chemistry, Niš
2. NTC NIS Naftagas - Novi Sad, Novi Sad
3. Faculty of Agriculture, Novi Sad
Abstract
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.
Funder
Ministry of Education, Science and Technological Development of the Republic of Serbia
Publisher
National Library of Serbia
Subject
General Chemical Engineering,General Chemistry
Cited by
25 articles.
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