Acylation of isobutylbenzene with acetic anhydride on AlKIT-6 mesoporous acid catalyst
Aluminium substituted mesoporous KIT-6 materials were directly synthesized by hydrothermal method with different silica to aluminium ratios (Si/Al = 25, 50, 75, 100). These materials were obtained by using Pluronic P123 and n-butanol as a structure-directing agent and co-solvent respectively, under...
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KeAi Communications Co., Ltd.
2021-01-01
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| Series: | Materials Science for Energy Technologies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589299121000094 |
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| author | Prabhu Azhagapillai Balachandran Sundaravel Muthusamy P. Pachamuthu |
| author_facet | Prabhu Azhagapillai Balachandran Sundaravel Muthusamy P. Pachamuthu |
| author_sort | Prabhu Azhagapillai |
| collection | DOAJ |
| description | Aluminium substituted mesoporous KIT-6 materials were directly synthesized by hydrothermal method with different silica to aluminium ratios (Si/Al = 25, 50, 75, 100). These materials were obtained by using Pluronic P123 and n-butanol as a structure-directing agent and co-solvent respectively, under high acidic conditions. The prepared catalysts were characterized by small-angle XRD, ICP-AES, nitrogen sorption analysis, TGA, SEM, TEM, and XPS techniques. The characterization revealed that aluminium is mainly incorporated into the framework of KIT-6. The XRD patterns and TEM images of materials showed a highly ordered cubic Ia3d mesostructure. The incorporation of the aluminium was clearly evident from XPS and ICP-AES techniques. Further, the synthesized Al-KIT-6 catalysts were tested in the acylation of isobutylbenzene (IBB) with acetic anhydride (AA). The results revealed that Al-KIT-6 (25) was a prominent active catalyst due to silica to aluminium ratio than others. The catalytic reaction conditions were tuned to obtain a high selectivity of 4-isobutyl acetophenone (4-IBA) with high conversion of isobutylbenzene. Al-KIT-6 (25) showed a high conversion (72%) of isobutylbenzene and 94% selectivity of 4-isobutyl acetophenone. |
| first_indexed | 2024-12-20T21:13:59Z |
| format | Article |
| id | doaj.art-87c1ffd24f6444c19b7e9bc6dd4d79da |
| institution | Directory Open Access Journal |
| issn | 2589-2991 |
| language | English |
| last_indexed | 2024-12-20T21:13:59Z |
| publishDate | 2021-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Materials Science for Energy Technologies |
| spelling | doaj.art-87c1ffd24f6444c19b7e9bc6dd4d79da2022-12-21T19:26:28ZengKeAi Communications Co., Ltd.Materials Science for Energy Technologies2589-29912021-01-014128135Acylation of isobutylbenzene with acetic anhydride on AlKIT-6 mesoporous acid catalystPrabhu Azhagapillai0Balachandran Sundaravel1Muthusamy P. Pachamuthu2Department of Chemical Engineering, Khalifa University, Sas Al Nakhl Campus, P.O. Box 2533, Abu Dhabi, United Arab Emirates; Department of Chemistry, Anna University, Chennai, Tamil Nadu 600025, India; Corresponding author at: Department of Chemical Engineering, Khalifa University, Sas Al Nakhl Campus, P.O. Box 2533, Abu Dhabi, United Arab Emirates.Department of Chemistry, Kalasalingam Academy of Research and Education (Deemed to be University), Krishnan Koil-626126, Tamil Nadu, IndiaDepartment of Chemistry, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu 638401, IndiaAluminium substituted mesoporous KIT-6 materials were directly synthesized by hydrothermal method with different silica to aluminium ratios (Si/Al = 25, 50, 75, 100). These materials were obtained by using Pluronic P123 and n-butanol as a structure-directing agent and co-solvent respectively, under high acidic conditions. The prepared catalysts were characterized by small-angle XRD, ICP-AES, nitrogen sorption analysis, TGA, SEM, TEM, and XPS techniques. The characterization revealed that aluminium is mainly incorporated into the framework of KIT-6. The XRD patterns and TEM images of materials showed a highly ordered cubic Ia3d mesostructure. The incorporation of the aluminium was clearly evident from XPS and ICP-AES techniques. Further, the synthesized Al-KIT-6 catalysts were tested in the acylation of isobutylbenzene (IBB) with acetic anhydride (AA). The results revealed that Al-KIT-6 (25) was a prominent active catalyst due to silica to aluminium ratio than others. The catalytic reaction conditions were tuned to obtain a high selectivity of 4-isobutyl acetophenone (4-IBA) with high conversion of isobutylbenzene. Al-KIT-6 (25) showed a high conversion (72%) of isobutylbenzene and 94% selectivity of 4-isobutyl acetophenone.http://www.sciencedirect.com/science/article/pii/S2589299121000094AcylationAl-KIT-6IsobutylbenzeneAcetic anhydride4-Isobutyl acetophenone |
| spellingShingle | Prabhu Azhagapillai Balachandran Sundaravel Muthusamy P. Pachamuthu Acylation of isobutylbenzene with acetic anhydride on AlKIT-6 mesoporous acid catalyst Materials Science for Energy Technologies Acylation Al-KIT-6 Isobutylbenzene Acetic anhydride 4-Isobutyl acetophenone |
| title | Acylation of isobutylbenzene with acetic anhydride on AlKIT-6 mesoporous acid catalyst |
| title_full | Acylation of isobutylbenzene with acetic anhydride on AlKIT-6 mesoporous acid catalyst |
| title_fullStr | Acylation of isobutylbenzene with acetic anhydride on AlKIT-6 mesoporous acid catalyst |
| title_full_unstemmed | Acylation of isobutylbenzene with acetic anhydride on AlKIT-6 mesoporous acid catalyst |
| title_short | Acylation of isobutylbenzene with acetic anhydride on AlKIT-6 mesoporous acid catalyst |
| title_sort | acylation of isobutylbenzene with acetic anhydride on alkit 6 mesoporous acid catalyst |
| topic | Acylation Al-KIT-6 Isobutylbenzene Acetic anhydride 4-Isobutyl acetophenone |
| url | http://www.sciencedirect.com/science/article/pii/S2589299121000094 |
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