caa a22 4500 445388706 CHVBK 20180317143039.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s11144-010-0255-2 doi (NATIONALLICENCE)springer-10.1007/s11144-010-0255-2 Structural characterization and catalytic properties of gallium-modified folded sheet mesoporous materials prepared using microwave-hydrothermal process [Elektronische Daten] [K. Bachari, R. Guerroudj, M. Lamouchi] The tertiary butylation of phenol has been investigated over a series of gallium-modified folded sheet mesoporous materials (Ga-FSM-16) with different Si/Ga ratios (Si/Ga=80, 50, 20) synthesized by the microwave-hydrothermal (M-H) process and characterized by several spectroscopic techniques such as X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 adsorption, temperature-programmed desorption (TPD) of pyridine and 71Ga MAS-NMR spectroscopy. The catalyst Ga-FSM-16 (20) showed the best performance in the acid-catalyzed tertiary butylation of phenol employing tert-butanol as the alkylation agent. A high phenol conversion of 80.3% is observed for this catalyst at a reaction temperature of 160°C. However, the 4-tert-butyl phenol (4-TBP) yield amounts to 43.3% and the 2,4-di-tert-butyl phenol (2,4-DTBP) yield is 30.3%. Furthermore, due to the large pore size, which allows a faster diffusion of reactants and products, catalyst deactivation of Ga-FSM-16 (20) was not observed even after reaction for 5h. Akadémiai Kiadó, Budapest, Hungary, 2010 Gallium-modified folded sheet mesoporous materials nationallicence tert -Butanol nationallicence 2,4-Di- tert -butyl phenol nationallicence Acidity nationallicence Alkylation nationallicence Bachari K. Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (C.R.A.P.C), BP 248, Alger RP 16004, Algiers, Algeria aut Guerroudj R. Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (C.R.A.P.C), BP 248, Alger RP 16004, Algiers, Algeria aut Lamouchi M. Laboratoire de Catalyse et Environnement, EA 2598, MREI, Université du Littoral-Cote d'Opale, 145, Avenue Maurice Schumann, 59140, Dunkerque Cedex, France aut Reaction Kinetics, Mechanisms and Catalysis Springer Netherlands 102/1(2011-02-01), 219-233 1878-5190 102:1<219 2011 102 11144 https://doi.org/10.1007/s11144-010-0255-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11144-010-0255-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bachari K. Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (C.R.A.P.C), BP 248, Alger RP 16004, Algiers, Algeria aut NATIONALLICENCE 700 1- Guerroudj R. Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (C.R.A.P.C), BP 248, Alger RP 16004, Algiers, Algeria aut NATIONALLICENCE 700 1- Lamouchi M. Laboratoire de Catalyse et Environnement, EA 2598, MREI, Université du Littoral-Cote d'Opale, 145, Avenue Maurice Schumann, 59140, Dunkerque Cedex, France aut NATIONALLICENCE 773 0- Reaction Kinetics, Mechanisms and Catalysis Springer Netherlands 102/1(2011-02-01), 219-233 1878-5190 102:1<219 2011 102 11144 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer