caa a22 4500 606196005 CHVBK 20210128100922.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s10934-015-9989-6 doi (NATIONALLICENCE)springer-10.1007/s10934-015-9989-6 A comparative study on iron modified or unmodified tungstophosphoric acid supported on titania for Friedel-Crafts acylation [Elektronische Daten] [Manman Mu, Ligong Chen, Shutao Wang] Tungstophosphoric acid supported on TiO2 (TPA/TiO2) and iron modified tungstophosphoric acid supported on TiO2 (Fe0.5TPA/TiO2 and FeTPA/TiO2) were prepared and examined for Friedel-Crafts acylation reactions. The obtained results indicated that FeTPA/TiO2 exhibited excellent catalytic performance on the acylation of m-xylene with benzoyl chloride, but inferior results were obtained in the acylation of anisole with acetic anhydride. However, TPA/TiO2 displayed better catalytic activity than others in the later reaction. All the catalysts were characterized by XRD, FT-IR, NH3-TPD, Py-IR and TGA. The obtained results demonstrated that the Lewis acidity of catalysts presented a significant influence on the reaction with benzoyl chloride as acylating agent while the total acidity of catalysts was more important with acetic anhydride as acylating agent. Finally, the reaction mechanisms with two acylating agents over the above catalysts were discussed. Springer Science+Business Media New York, 2015 Acylation nationallicence Benzoyl chloride nationallicence Acetic anhydride nationallicence TPA/TiO2 nationallicence FeTPA/TiO2 nationallicence Mu Manman School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, People's Republic of China aut Chen Ligong School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, People's Republic of China aut Wang Shutao Lanzhou Industry Research Institute, 730050, Lanzhou, People's Republic of China aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/5(2015-10-01), 1137-1143 1380-2224 22:5<1137 2015 22 10934 https://doi.org/10.1007/s10934-015-9989-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-015-9989-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mu Manman School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, People's Republic of China aut NATIONALLICENCE 700 1- Chen Ligong School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, People's Republic of China aut NATIONALLICENCE 700 1- Wang Shutao Lanzhou Industry Research Institute, 730050, Lanzhou, People's Republic of China aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/5(2015-10-01), 1137-1143 1380-2224 22:5<1137 2015 22 10934