TY - JOUR
T1 - Acylation of isobutylbenzene with acetic anhydride on AlKIT-6 mesoporous acid catalyst
AU - Azhagapillai, Prabhu
AU - Sundaravel, Balachandran
AU - Pachamuthu, Muthusamy P.
N1 - Funding Information:
The authors gratefully acknowledge Dr. S. Anandhan, Scientist-E, Center for Nano-materials International Advanced Research Centre for Powder Metallurgy & New Materials (ARCI), Andhra Pradesh, India, and Dr. L. Kumaresan, Research Officer, Indian oil corporation limited (IOCL), India for their fruitful discussion and supports.
Publisher Copyright:
© 2021
PY - 2021/1
Y1 - 2021/1
N2 - 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.
AB - 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.
KW - 4-Isobutyl acetophenone
KW - Acetic anhydride
KW - Acylation
KW - Al-KIT-6
KW - Isobutylbenzene
UR - https://www.scopus.com/pages/publications/85106635501
U2 - 10.1016/j.mset.2021.02.002
DO - 10.1016/j.mset.2021.02.002
M3 - Article
AN - SCOPUS:85106635501
SN - 2589-2991
VL - 4
SP - 128
EP - 135
JO - Materials Science for Energy Technologies
JF - Materials Science for Energy Technologies
ER -