Transalkylation of Toluene with 1, 2, 4-Trimethylbenzene over
The catalytic activity, selectivity to xylenes and time-on-stream stability were investigated in the transalkylation of toluene with 1, 2, 4-trimethylbenzene. The catalytic tests were carried out in a fixed bed reactor over zeolite Beta (Si/Al = 12.5, 75 and 150) and Y (Si/Al = 2.6, 6, 15 and 30). T...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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AIDIC Servizi S.r.l.
2017-03-01
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| Series: | Chemical Engineering Transactions |
| Online Access: | https://www.cetjournal.it/index.php/cet/article/view/2221 |
| _version_ | 1818864568498126848 |
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| author | F. Almulla V.L. Zholobenko J.P. Waters A. Garforth |
| author_facet | F. Almulla V.L. Zholobenko J.P. Waters A. Garforth |
| author_sort | F. Almulla |
| collection | DOAJ |
| description | The catalytic activity, selectivity to xylenes and time-on-stream stability were investigated in the transalkylation of toluene with 1, 2, 4-trimethylbenzene. The catalytic tests were carried out in a fixed bed reactor over zeolite Beta (Si/Al = 12.5, 75 and 150) and Y (Si/Al = 2.6, 6, 15 and 30). The operating parameters used were 400 °C, 1.0 Mpa, H2/HC = 4 and WHSV of 5 h-1. The length of each catalytic testing experiment was 50 hours, and for zeolite beta samples, the highest stability and selectivity to xylenes were achieved using the lowest Si/Al ratio with conversion of 41 wt. % and selectivity of 61 wt. %. In contrast, zeolites Y with Si/Al ratio of 2.6 showed the highest deactivation rate, whereas Y zeolites with Si/Al = 6 – 30 exhibited similar conversion (~ 27 wt. %) and selectivity to xylenes (~ 43 wt. %). The effects of Brønsted and Lewis acid sites on catalytic results are discussed. |
| first_indexed | 2024-12-19T10:33:43Z |
| format | Article |
| id | doaj.art-d075681821f14781a8d0d2e3140fc0c7 |
| institution | Directory Open Access Journal |
| issn | 2283-9216 |
| language | English |
| last_indexed | 2024-12-19T10:33:43Z |
| publishDate | 2017-03-01 |
| publisher | AIDIC Servizi S.r.l. |
| record_format | Article |
| series | Chemical Engineering Transactions |
| spelling | doaj.art-d075681821f14781a8d0d2e3140fc0c72022-12-21T20:25:41ZengAIDIC Servizi S.r.l.Chemical Engineering Transactions2283-92162017-03-015710.3303/CET1757158Transalkylation of Toluene with 1, 2, 4-Trimethylbenzene overF. AlmullaV.L. ZholobenkoJ.P. WatersA. GarforthThe catalytic activity, selectivity to xylenes and time-on-stream stability were investigated in the transalkylation of toluene with 1, 2, 4-trimethylbenzene. The catalytic tests were carried out in a fixed bed reactor over zeolite Beta (Si/Al = 12.5, 75 and 150) and Y (Si/Al = 2.6, 6, 15 and 30). The operating parameters used were 400 °C, 1.0 Mpa, H2/HC = 4 and WHSV of 5 h-1. The length of each catalytic testing experiment was 50 hours, and for zeolite beta samples, the highest stability and selectivity to xylenes were achieved using the lowest Si/Al ratio with conversion of 41 wt. % and selectivity of 61 wt. %. In contrast, zeolites Y with Si/Al ratio of 2.6 showed the highest deactivation rate, whereas Y zeolites with Si/Al = 6 – 30 exhibited similar conversion (~ 27 wt. %) and selectivity to xylenes (~ 43 wt. %). The effects of Brønsted and Lewis acid sites on catalytic results are discussed.https://www.cetjournal.it/index.php/cet/article/view/2221 |
| spellingShingle | F. Almulla V.L. Zholobenko J.P. Waters A. Garforth Transalkylation of Toluene with 1, 2, 4-Trimethylbenzene over Chemical Engineering Transactions |
| title | Transalkylation of Toluene with 1, 2, 4-Trimethylbenzene over |
| title_full | Transalkylation of Toluene with 1, 2, 4-Trimethylbenzene over |
| title_fullStr | Transalkylation of Toluene with 1, 2, 4-Trimethylbenzene over |
| title_full_unstemmed | Transalkylation of Toluene with 1, 2, 4-Trimethylbenzene over |
| title_short | Transalkylation of Toluene with 1, 2, 4-Trimethylbenzene over |
| title_sort | transalkylation of toluene with 1 2 4 trimethylbenzene over |
| url | https://www.cetjournal.it/index.php/cet/article/view/2221 |
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