Najim, Nadim A.R. (1984). Crystallization and Separation of Pentaerythritol from Lubricating Oil Dispersant Additives. PHD thesis, Aston University.
Abstract
In the industrial production of a lubricating oil dispersant additive pentaerythritol (PE) is reacted with polyisobutenyl succinic anhydride (PIBSA). The sediment obtained is difficult to separate due to many factors also there is usually an increase in the sediment level during the storage of the product. The main objectives of this work were to improve the solid/liquid separation and to identify and eliminate the cause of the sediment formation during storage. During the course of the investigation the kinetics of the PIBSA/PE reaction were studied in a stirred, 1 dm3. reaction vessel and the results were used to develop an approximate, rate expression of the form
| Publication DOI: | https://doi.org/10.48780/publications.aston.ac.uk.00010198 |
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| Divisions: | College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry |
| Additional Information: | Copyright © Najim, N. A. R, 1984. Najim, N. A. R asserts their moral right to be identified as the author of this thesis. This copy of the thesis has been supplied on condition that anyone who consults it is understood to recognise that its copyright rests with its author and that no quotation from the thesis and no information derived from it may be published without appropriate permission or acknowledgement. If you have discovered material in Aston Publications Explorer which is unlawful e.g. breaches copyright, (either yours or that of a third party) or any other law, including but not limited to those relating to patent, trademark, confidentiality, data protection, obscenity, defamation, libel, then please read our Takedown Policy and contact the service immediately. |
| Institution: | Aston University |
| Uncontrolled Keywords: | crystallization,separation,pentaerythritol,lubricating oil,dispersant additives |
| Last Modified: | 19 Mar 2025 14:22 |
| Date Deposited: | 08 Dec 2010 10:28 |
| Completed Date: | 1984 |
| Authors: |
Najim, Nadim A.R.
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