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Title:Mehanokemijske sinteze selenidov prehodnih kovin 4. periode (MxSey; M=Zn, Ni, Co)
Authors:ID Vičar, Urška (Author)
ID Kristl, Matjaž (Mentor) More about this mentor... New window
ID Ban, Irena (Co-mentor)
Files:.pdf VS_Vicar_Urska_2017.pdf (3,16 MB)
MD5: 64B6BFDB3DD31A159AB93D768EB7A8B3
PID: 20.500.12556/dkum/8d7c28d0-88c8-4cd1-a713-a2f71fd5a9ee
 
Language:Slovenian
Work type:Bachelor thesis/paper (mb11)
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Diplomsko delo je namenjeno sintetiziranju selenidov prehodnih kovin 4. periode in s tem pridobivanju novega materiala ter raziskati lastnosti le tega. Prehodne kovine, ki smo jih uporabili pri sintezi so cink (Zn), nikelj (Ni) in kobalt (Co). V diplomskem delu so predstavljene sinteze selenidov, katere smo izvajali z mehanokemijsko metodo. Mehanokemijska metoda temelji na visokoenergijskem mletju v jekleni posodi z mlevnimi kroglicami. Le to smo izvajali v mlinu SPEX 8000M. Vse dobljene praškaste vzorce smo po mehanokemijski metodi analizirali z rentgensko praškovno difrakcijo (XRD). Na podlagi dobljenih difraktogramov smo dobili zanimive rezultate, ki smo jih na koncu diplomskega dela podrobno opisali. Sinteze smo po pregledu difraktogramov še izboljševali s pomočjo metod kot so: termogravimetrična analiza, segrevanje praškastih kemikalij v cevni peči s pretokom vodika ter argona in z izvajanjem dela v inertni atmosferi z dušikom. Rezultate dobljene z metodo rentgenske praškovne difrakcije posameznih vzorcev smo predstavili z difraktogrami, katere smo podrobno opisali v poglavju Rezultati in diskusija. Najlepše rezultate na podlagi difraktogramov smo dobili pri sintezi selena z nikljem.
Keywords:selen, prehodne kovine 4. periode, mehanokemijska sinteza, rentgenska praškovna difrakcija, cevna peč, termogravimetrična analiza, inertna atmosfera, difraktogram
Year of publishing:2017
Publisher:[U. Vičar]
Source:Maribor
PID:20.500.12556/DKUM-67657 New window
UDC:549.32/.33(043.2)
COBISS.SI-ID:21060886 New window
NUK URN:URN:SI:UM:DK:AMNZSXII
Publication date in DKUM:22.11.2017
Views:983
Downloads:92
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY-ND 4.0, Creative Commons Attribution-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nd/4.0/
Description:Under the NoDerivatives Creative Commons license one can take a work released under this license and re-distribute it, but it cannot be shared with others in adapted form, and credit must be provided to the author.
Licensing start date:25.08.2017

Secondary language

Language:English
Title:Mechanochemical synthesis of selenides with 4th period transition metals (MxSey; M=Zn, Ni, Co)
Abstract:The thesis is intended for the synthesis of selenides with 4th period transition metals, thus obtaining new materials and investigating its properties. The transition metals we used in the synthesis are zinc (Zn), nickel (Ni) and cobalt (Co). The thesis presents the syntheses of selenides, which we performed with the mechanochemical method. The mechanochemical method is based on high-energy grinding in a steel bowl with grinding balls. We did this in the SPEX 8000M grinder. All the obtained powder samples were analyzed using X-ray powder diffraction (XRD). On the basis of the obtained diffractograms we acquired interesting results, which were described in detail, at the end of the thesis. After the examination of the diffractograms, the syntheses were further improved, using methods such as: thermogravity analysis, heating of powdered chemicals in a tubular furnace with hydrogen and argon flow, and by performing work in an inert atmosphere with nitrogen. The results obtained by the method of X-ray powder diffraction of individual samples, were presented with diffractograms, which are described in detail in the chapter: Results and discussion. The best results, on the basis of diffractograms, were obtained in the synthesis of selenium with nickel.
Keywords:Selenium, 4th period transition metals, mechanochemical synthesis, X-ray powder diffraction, tube furnace, thermogravity analysis, inert atmosphere, diffractogram


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