t-Butylation of 1,2-dihydroxybenzene over mesoporous solid acid catalysts

M. Selvaraj, B. H. Him, J. Han, Tai Gyu Lee

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Abstract

t-Butylation of 1,2-dihydroxubenzene (DHB) with isobutene as alkylating agent was carried out over Zn-Al-MCM-41(TIE, template ion-exchange) and Zn-Al-MCM-41(HT, hydrothermal) with different Si/(Zn+Al) catalysts to highly selective synthesis of 4-t-butylcatechol. For the reactions, the influences of various reaction parameters such as different catalysts, reaction temperature, WHSV (weight hourly space velocity), reactant molar ratio are discussed. The selectivity of 4-t-butylcatechol in Zn-Al-MCM-41(75)-TIE is higher than that of other Zn-Al-MCM-41(TIE) and Zn-Al-MCM-41(HT) due to increasing the catalytic activity within pores on the silica surface by completely template ion-exchanging through metal-ions under TIE method. Thus a Zn-Al-MCM-41(75)-TIE catalyst is the superior catalyst for the synthesis of 4-t-butylcatechol.

Original languageEnglish
Pages (from-to)803-808
Number of pages6
JournalStudies in Surface Science and Catalysis
Volume156
Publication statusPublished - 2005 Jan 1

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All Science Journal Classification (ASJC) codes

  • Catalysis
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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