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Adsorption of ZDDP on alpha-phase iron oxide
2009 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Two different ZDDP solutions were prepared, one with ZDDP in hexadecane, the other one with ZDDP in Diethylene glycol dibutyl ether (DGDE). The concentration of them was increased from 0.1 weight percent to 5 weight percent of ZDDP. Alpha-phase Iron(‡V) Oxide is used for ZDDP adsorption. The scope of the exam work was to first measure the molar absorption coefficient for ZDDP in DGDE as well as in hexadecane by recording ATR spectra of ZDDP in the two solvents as a function of concentration. Subsequently, the absorption coefficients would be used in batch experiments where ZDDP was adsorbed on alpha-phase Iron(III) oxide in order to construct adsorption isotherms at various temperatures. In the latter part of the experiments, the temperature and time stability of ZDDP should also be examined. Finally, the aim was to study the adsorption of ZDDP on alpha-phase iron(III) oxide in-situ, using the ATR method. However, the final part of the experiments was not meaningful, since it eventually turned out that the ZDDP chemical, as received from SKF, was not pure enough as confirmed at our laboratories by means of NMR analysis.

Place, publisher, year, edition, pages
Keyword [en]
Physics Chemistry Maths, Adsorption, ZDDP, Alpha-Iron, Stability
Keyword [sv]
Fysik, Kemi, Matematik
URN: urn:nbn:se:ltu:diva-58575ISRN: LTU-PB-EX--09/011--SELocal ID: f292ee1b-9b78-4fc8-a3ce-b0c083aeeedeOAI: diva2:1031963
Subject / course
Student thesis, at least 30 credits
Educational program
Chemical Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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