Synthesis and characterization of N-alkyl-2-aminopyridinum oligomers as pour point depressants for crude oil
The synthesis of N-decyl- (C10P), N-dodecyl- (C12P) and N-cetyl-2-aminopyridinum (C16P) oligomers was achieved by oxidative polymerization of N-decyl- (C10), N-dodecyl- (C12) and N-cetyl-2-aminopyridinium bromide monomers respectively in aqueous acid medium. Density function theory (DFT) was applied...
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| Language: | English |
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Egyptian Petroleum Research Institute
2018-12-01
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| Series: | Egyptian Journal of Petroleum |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1110062118302265 |
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| author | Eid M.S. Azzam Sayed A. Ahmed Hanafy M. Abd El-Salam Osama A. Abd Allha Elshafie A.M. Gad |
| author_facet | Eid M.S. Azzam Sayed A. Ahmed Hanafy M. Abd El-Salam Osama A. Abd Allha Elshafie A.M. Gad |
| author_sort | Eid M.S. Azzam |
| collection | DOAJ |
| description | The synthesis of N-decyl- (C10P), N-dodecyl- (C12P) and N-cetyl-2-aminopyridinum (C16P) oligomers was achieved by oxidative polymerization of N-decyl- (C10), N-dodecyl- (C12) and N-cetyl-2-aminopyridinium bromide monomers respectively in aqueous acid medium. Density function theory (DFT) was applied to recognize the reactive center in monomers used. The result of quantum calculations indicated that the oligomerization could proceed via open ring reaction. The obtained oligomers were characterized using FTIR and 1H NMR spectroscopy. In addition, the XRD and SEM were used to investigate the morphology of the prepared oligomers. The thermal stability of the obtained oligomers was followed by thermogravimetric analysis (TGA). The conversion of these oligomers is ranged from 61 to 68% and the weight average molecular weights are closed to 3000 g mol−1. The surface tension of the synthesized oligomers was measured at different concentrations and temperatures. The efficiency of the synthesized oligomers in depressing the pour point of crude oil was investigated. The synthesized oligomers showed high efficiency as pour point dispersants. Keywords: N-alkyl-2-aminopyridinum, Oligomers, Crude oil, Pour point dispersants |
| format | Article |
| id | doaj-art-a75c8358693445c8acf9d19fb2d162cc |
| institution | DOAJ |
| issn | 1110-0621 |
| language | English |
| publishDate | 2018-12-01 |
| publisher | Egyptian Petroleum Research Institute |
| record_format | Article |
| series | Egyptian Journal of Petroleum |
| spelling | doaj-art-a75c8358693445c8acf9d19fb2d162cc2025-08-20T03:04:42ZengEgyptian Petroleum Research InstituteEgyptian Journal of Petroleum1110-06212018-12-012741337134410.1016/j.ejpe.2018.09.001Synthesis and characterization of N-alkyl-2-aminopyridinum oligomers as pour point depressants for crude oilEid M.S. Azzam0Sayed A. Ahmed1Hanafy M. Abd El-Salam2Osama A. Abd Allha3Elshafie A.M. Gad4Applied Surfactants Laboratory, Petrochemicals Department, Egyptian Petroleum Research Institute, 11727 Nasr City, Cairo, Egypt; Corresponding author.Department of Chemistry, Faculty of Science, Beni-Suef University, 62514 Beni-Suef City, EgyptDepartment of Chemistry, Faculty of Science, Beni-Suef University, 62514 Beni-Suef City, EgyptDepartment of Chemistry, Faculty of Science, Beni-Suef University, 62514 Beni-Suef City, EgyptApplied Surfactants Laboratory, Petrochemicals Department, Egyptian Petroleum Research Institute, 11727 Nasr City, Cairo, EgyptThe synthesis of N-decyl- (C10P), N-dodecyl- (C12P) and N-cetyl-2-aminopyridinum (C16P) oligomers was achieved by oxidative polymerization of N-decyl- (C10), N-dodecyl- (C12) and N-cetyl-2-aminopyridinium bromide monomers respectively in aqueous acid medium. Density function theory (DFT) was applied to recognize the reactive center in monomers used. The result of quantum calculations indicated that the oligomerization could proceed via open ring reaction. The obtained oligomers were characterized using FTIR and 1H NMR spectroscopy. In addition, the XRD and SEM were used to investigate the morphology of the prepared oligomers. The thermal stability of the obtained oligomers was followed by thermogravimetric analysis (TGA). The conversion of these oligomers is ranged from 61 to 68% and the weight average molecular weights are closed to 3000 g mol−1. The surface tension of the synthesized oligomers was measured at different concentrations and temperatures. The efficiency of the synthesized oligomers in depressing the pour point of crude oil was investigated. The synthesized oligomers showed high efficiency as pour point dispersants. Keywords: N-alkyl-2-aminopyridinum, Oligomers, Crude oil, Pour point dispersantshttp://www.sciencedirect.com/science/article/pii/S1110062118302265 |
| spellingShingle | Eid M.S. Azzam Sayed A. Ahmed Hanafy M. Abd El-Salam Osama A. Abd Allha Elshafie A.M. Gad Synthesis and characterization of N-alkyl-2-aminopyridinum oligomers as pour point depressants for crude oil Egyptian Journal of Petroleum |
| title | Synthesis and characterization of N-alkyl-2-aminopyridinum oligomers as pour point depressants for crude oil |
| title_full | Synthesis and characterization of N-alkyl-2-aminopyridinum oligomers as pour point depressants for crude oil |
| title_fullStr | Synthesis and characterization of N-alkyl-2-aminopyridinum oligomers as pour point depressants for crude oil |
| title_full_unstemmed | Synthesis and characterization of N-alkyl-2-aminopyridinum oligomers as pour point depressants for crude oil |
| title_short | Synthesis and characterization of N-alkyl-2-aminopyridinum oligomers as pour point depressants for crude oil |
| title_sort | synthesis and characterization of n alkyl 2 aminopyridinum oligomers as pour point depressants for crude oil |
| url | http://www.sciencedirect.com/science/article/pii/S1110062118302265 |
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