Generation of Brönsted acidity in AlMCM-41 by sulphation for enhanced liquid phase tert-butylation of phenol

• Main Authors: Ng, Eng Poh, Nur, Hadi, Wong, Ka Lun, Muhid, Mohd Nazlan Mohd, Hamdan, Halimaton
• Format: Article
• Published: Elsevier B.V. 2007
• Subjects: QD Chemistry
• Online Access: http://eprints.utm.my/id/eprint/7316/; http://dx.doi.org/10.1016/j.apcata.2007.02.001
• Institution: Universiti Teknologi Malaysia

AlMCM-41 mesoporous molecular sieve modified by impregnation with sulphuric acid in toluene possesses only Brönsted acid sites. The catalyst exhibits a high catalytic activity for tert-butylation of phenol with high selectivity to 2,4-di-tert-butylphenol in liquid phase. 27Al MAS NMR study indicat...