caa a22 4500 463253868 CHVBK 20180405153348.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s10562-007-9126-5 doi (NATIONALLICENCE)springer-10.1007/s10562-007-9126-5 12-tungstophosphoric and 12-tungstosilicicacid supported onto hydrous zirconia for liquid phase tert -butylation of m -cresol [Elektronische Daten] [Nikunj Bhatt, Charul Shah, Anjali Patel] Supported 12-tungstophosphoricacid (12-TPA) and 12-tunstosilicicacid (12-TSA) were used as heterogeneous catalysts for liquid-phase tert-butylation of m-cresol, an industrial important reaction. Alkylation reactions have been carried out with supported 12-TPA by varying different parameters such as % loading of 12-tungstophosphoricacid onto support, mole ratio of alcohol to m-cresol, reaction temperature, amount of the catalyst, reaction time and calcination temperature to optimize the conditions. To see the effect of the acidity on the reaction, the same reaction was studied over supported 12-TSA. Both the catalysts give 100% selectivity for o-isomer with different % conversion. The difference in catalyst performance of both the catalyst was correlated with the value of total acidity as well as Bronsted acidity. Springer Science+Business Media, LLC, 2007 tert -butylation nationallicence m -cresol nationallicence 12-tungstophosphoricacid nationallicence 12-tungstosilicicacid nationallicence hydrous zirconia nationallicence Bhatt Nikunj Department of Chemistry, Faculty of Science, The M.S. University of Baroda, 390002, Vadodara, India aut Shah Charul Department of Chemistry, Faculty of Science, The M.S. University of Baroda, 390002, Vadodara, India aut Patel Anjali Department of Chemistry, Faculty of Science, The M.S. University of Baroda, 390002, Vadodara, India aut Catalysis Letters Springer US; http://www.springer-ny.com 117/3-4(2007-09-01), 146-152 1011-372X 117:3-4<146 2007 117 10562 https://doi.org/10.1007/s10562-007-9126-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9126-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bhatt Nikunj Department of Chemistry, Faculty of Science, The M.S. University of Baroda, 390002, Vadodara, India aut NATIONALLICENCE 700 1- Shah Charul Department of Chemistry, Faculty of Science, The M.S. University of Baroda, 390002, Vadodara, India aut NATIONALLICENCE 700 1- Patel Anjali Department of Chemistry, Faculty of Science, The M.S. University of Baroda, 390002, Vadodara, India aut NATIONALLICENCE 773 0- Catalysis Letters Springer US; http://www.springer-ny.com 117/3-4(2007-09-01), 146-152 1011-372X 117:3-4<146 2007 117 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer