Kinetic Study on Microwave-Assisted Oligomerization of 1-Decene over a HY Catalyst
A promising production route for a high-quality base stock for lubricants is the oligomerization of high molecular-weight olefins in a high energy efficiency system. Oligomerization of 1-decene (C<sub>10</sub>) was conducted in a microwave-assisted system over a HY zeolite catalyst at di...
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| Format: | Article |
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MDPI AG
2021-09-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/11/9/1105 |
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| author | Snunkhaem Echaroj Channarong Asavatesanupap Sumaeth Chavadej Malee Santikunaporn |
| author_facet | Snunkhaem Echaroj Channarong Asavatesanupap Sumaeth Chavadej Malee Santikunaporn |
| author_sort | Snunkhaem Echaroj |
| collection | DOAJ |
| description | A promising production route for a high-quality base stock for lubricants is the oligomerization of high molecular-weight olefins in a high energy efficiency system. Oligomerization of 1-decene (C<sub>10</sub>) was conducted in a microwave-assisted system over a HY zeolite catalyst at different reaction temperatures and times. Higher reaction temperature resulted in increasing formation of dimers and trimers. The oligomerization reaction yielded 80% conversion, 54.2% dimer product, 22.3% trimer product and 3.4% heavier product at 483 K for a reaction time of 3 h. The best fit kinetic model for the dimerization reaction was formulated from an assumption of no vacant reaction sites. For the trimerization reaction, a molecule of dimer (C<sub>20</sub>) formed on the active site, interacted with a molecule of 1-decene in the bulk solution to form a molecule of trimer (C<sub>30</sub>). Apparent activation energies for the dimerization and trimerization reactions were 70.8 ± 0.8 and 83.6 ± 0.9 kJ/mol, respectively. The C<sup>13</sup>-NMR spectrum indicated that the oligomer product contained a significant portion of highly branched hydrocarbons, causing a substantial reduction in the viscosity index compared to conventional poly-alpha olefin lubricant (PAO). |
| first_indexed | 2024-03-10T07:48:59Z |
| format | Article |
| id | doaj.art-08d10e56fe504a6fa0bc852292fa70c7 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T07:48:59Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
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| series | Catalysts |
| spelling | doaj.art-08d10e56fe504a6fa0bc852292fa70c72023-11-22T12:21:28ZengMDPI AGCatalysts2073-43442021-09-01119110510.3390/catal11091105Kinetic Study on Microwave-Assisted Oligomerization of 1-Decene over a HY CatalystSnunkhaem Echaroj0Channarong Asavatesanupap1Sumaeth Chavadej2Malee Santikunaporn3Department of Mechanical Engineering, Faculty of Engineering, Thammasat School of Engineering, Thammasat University, Bangkok 12120, ThailandDepartment of Mechanical Engineering, Faculty of Engineering, Thammasat School of Engineering, Thammasat University, Bangkok 12120, ThailandThe Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, ThailandDepartment of Chemical Engineering, Faculty of Engineering, Thammasat School of Engineering, Thammasat University, Bangkok 12120, ThailandA promising production route for a high-quality base stock for lubricants is the oligomerization of high molecular-weight olefins in a high energy efficiency system. Oligomerization of 1-decene (C<sub>10</sub>) was conducted in a microwave-assisted system over a HY zeolite catalyst at different reaction temperatures and times. Higher reaction temperature resulted in increasing formation of dimers and trimers. The oligomerization reaction yielded 80% conversion, 54.2% dimer product, 22.3% trimer product and 3.4% heavier product at 483 K for a reaction time of 3 h. The best fit kinetic model for the dimerization reaction was formulated from an assumption of no vacant reaction sites. For the trimerization reaction, a molecule of dimer (C<sub>20</sub>) formed on the active site, interacted with a molecule of 1-decene in the bulk solution to form a molecule of trimer (C<sub>30</sub>). Apparent activation energies for the dimerization and trimerization reactions were 70.8 ± 0.8 and 83.6 ± 0.9 kJ/mol, respectively. The C<sup>13</sup>-NMR spectrum indicated that the oligomer product contained a significant portion of highly branched hydrocarbons, causing a substantial reduction in the viscosity index compared to conventional poly-alpha olefin lubricant (PAO).https://www.mdpi.com/2073-4344/11/9/1105oligomerizationmicro-kinetic modellingzeoliteC<sup>13</sup>-NMRmicrowave-assisted |
| spellingShingle | Snunkhaem Echaroj Channarong Asavatesanupap Sumaeth Chavadej Malee Santikunaporn Kinetic Study on Microwave-Assisted Oligomerization of 1-Decene over a HY Catalyst Catalysts oligomerization micro-kinetic modelling zeolite C<sup>13</sup>-NMR microwave-assisted |
| title | Kinetic Study on Microwave-Assisted Oligomerization of 1-Decene over a HY Catalyst |
| title_full | Kinetic Study on Microwave-Assisted Oligomerization of 1-Decene over a HY Catalyst |
| title_fullStr | Kinetic Study on Microwave-Assisted Oligomerization of 1-Decene over a HY Catalyst |
| title_full_unstemmed | Kinetic Study on Microwave-Assisted Oligomerization of 1-Decene over a HY Catalyst |
| title_short | Kinetic Study on Microwave-Assisted Oligomerization of 1-Decene over a HY Catalyst |
| title_sort | kinetic study on microwave assisted oligomerization of 1 decene over a hy catalyst |
| topic | oligomerization micro-kinetic modelling zeolite C<sup>13</sup>-NMR microwave-assisted |
| url | https://www.mdpi.com/2073-4344/11/9/1105 |
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