alexa A Functionalized, Supported Ionic Liquid for Alkylation
ISSN: 2157-7048

Journal of Chemical Engineering & Process Technology
Open Access

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Research Article

A Functionalized, Supported Ionic Liquid for Alkylation of p-Cresol with Tert-Butyl Alcohol

Pandian Elavarasan, Kishore Kondamudi and Sreedevi Upadhyayula*
Department of Chemical Engineering, Indian Institute of Technology Delhi, New Delhi, India
Corresponding Author : Sreedevi Upadhyayula
Department of Chemical Engineering
Indian Institute of Technology Delhi
Hauz Khas, New Delhi-110 016, India
Tel: +911126591083
E-mail: [email protected]
Received: January 09, 2016 Accepted: January 29, 2016 Published: January 31, 2016
Citation: Elavarasan P, Kondamudi K, Upadhyayula S (2016) A Functionalized, Supported Ionic Liquid for Alkylation of p-cresol with tert-Butyl Alcohol. J Chem Eng Process Technol 7:270. doi:10.4172/2157-7048.1000270
Copyright: © 2016 Elavarasan P, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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SO3-H functionalized ionic liquid was prepared using 1-vinyl imidazole and 1,4 -butanesultone as source materials and then supported on mesoporous silica material (SBA-15). This supported ionic liquid catalyst was characterized using XRD, SEM, FT-IR, solid state NMR, TGA. Their catalytic activity in Tert-butylation of p-cresol with tert-butyl alcohol (TBA) was investigated in a batch autoclave. The effects of reaction time, reaction temperature, catalyst amount and reactant mole ratio on the conversion of p-cresol and 2-tert-butyl-p-cresol (TBC) and 2, 6-di-tert-butylp- cresol (DTBC) selectivities were investigated. Lower alcohol to p-cresol mole ratios, lower catalyst loading at 110°C gave a 65% maximum conversion of p-cresol. The recoverability and recyclability of the catalyst was also investigated. The catalyst could be completely recovered and its activity was found to be almost completely retained even after 5 recycles. The experimental data was found to satisfy a second order rate equation. The activation energy was calculated to be 5.2 kcal/mol.


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