A novel route to produce 4-t-butyltoluene by t-butylation of toluene with t-butylalcohol over mesoporous Al-MCM-41 molecular sieves

M. Selvaraj, S. H. Jeon, J. Han, P. K. Sinha, Tai Gyu Lee

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31 Citations (Scopus)


t-Butylation of toluene with t-butylalcohol (t-BuOH) as alkylating agent was conducted under liquid phase reaction conditions over Al-MCM-41 with different Si/Al ratios for highly selective synthesis of 4-t-butyltoluene. For the reactions, the influences of various reaction parameters such as reaction temperature, time and t-BuOH to toluene ratio are discussed. With increasing the Si/Al ratios of Al-MCM-41 catalysts from 21 to 104, the conversion of toluene, and the yield and selectivity of 4-t-butyltoluene decreased because the number of Brønsted acid sites in Al-MCM-41 catalysts is found to decrease almost linearly with increasing ratios of Si/Al. The conversion and selectivity is increased in Al-MCM-41(21) with each cycling of reaction. The Si/Al ratio of 21 is found to be more suitable for the t-butylation of toluene to highly selective synthesis of 4-t-butyltoluene. Thus the selectivity of 4-t-butyltoluene is higher in Al-MCM-41(21) than that in other Al-MCM-41 samples.

Original languageEnglish
Pages (from-to)44-51
Number of pages8
JournalApplied Catalysis A: General
Issue number1
Publication statusPublished - 2005 May 26


All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology

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