caa a22 4500 463191668 CHVBK 20180406164911.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10973-006-8155-4 doi (NATIONALLICENCE)springer-10.1007/s10973-006-8155-4 Highly active and reusable heterogeneous catalysts for acylation of anisole [Elektronische Daten] [H. Hsu, Rosilda Selvin, T. Her] In the present study, non-conventional solid acid catalysts such as NaY, metal ion exchanged zeolite NaY (Zn2+, Fe3+, Ce3+, La3+ and Nd3+), H-mordenite, H-β and HZSM-5 were used in order to overcome the disadvantages of conventional Friedel-Crafts catalysts for the acylation of anisole with acetic anhydride. Among the various zeolites studied, the HY zeolite shows an intermediate activity. Zeolite containing transition metal ions (Zn2+ and Fe3+) are less active and zeolite NaY is nearly inactive. The catalysts exhibit the activity in the order H-β>transition metal ions (Zn2+ and Fe3+)>HY>NaY zeolite. The highest catalytic activity of H-β could be due to its larger pore size. The type of acidity and the acid strength in zeolite Y were determined by FTIR and differential scanning calorimetric (DSC) studies on the pyridine adsorbed catalysts. The correlation of catalytic activity with acidity reveals that Brönsted acid sites in zeolite promote the acylation of anisole. Springer Science+Business Media LLC, 2007 anisole acylation nationallicence DSC nationallicence FTIR nationallicence p-methoxyacetophenone nationallicence surface acidity nationallicence zeolite catalysis nationallicence Hsu H. Department of Chemical and Materials Engineering, Lunghwa University of Science and Technology, 300 Wan-shou Rd. Sec. 1, Kueishan, Taoyuan, Taiwan aut Selvin Rosilda Department of Chemical and Materials Engineering, Lunghwa University of Science and Technology, 300 Wan-shou Rd. Sec. 1, Kueishan, Taoyuan, Taiwan aut Her T. Department of Chemical and Materials Engineering, Lunghwa University of Science and Technology, 300 Wan-shou Rd. Sec. 1, Kueishan, Taoyuan, Taiwan aut Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 89/2(2007-08-01), 379-383 1388-6150 89:2<379 2007 89 10973 https://doi.org/10.1007/s10973-006-8155-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-8155-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hsu H. Department of Chemical and Materials Engineering, Lunghwa University of Science and Technology, 300 Wan-shou Rd. Sec. 1, Kueishan, Taoyuan, Taiwan aut NATIONALLICENCE 700 1- Selvin Rosilda Department of Chemical and Materials Engineering, Lunghwa University of Science and Technology, 300 Wan-shou Rd. Sec. 1, Kueishan, Taoyuan, Taiwan aut NATIONALLICENCE 700 1- Her T. Department of Chemical and Materials Engineering, Lunghwa University of Science and Technology, 300 Wan-shou Rd. Sec. 1, Kueishan, Taoyuan, Taiwan aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 89/2(2007-08-01), 379-383 1388-6150 89:2<379 2007 89 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer