Journal of Industrial and Engineering Chemistry, Vol.6, No.3, 163-166, May, 2000
Investigation of Butyl Group Transfer Reactions of t-Butyl Catechol over Solid Acid Catalysts
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The butyl group transfer reactions of t-butyl catechols were investigated over the zeolite HBEA and super acid SO4/ZrO2. Melting a physical mixture of 3,5-di-tert-butylcatechol (DTBC), catechol and/or 4-tert-butylcatechol (4-TBC) produced a significant conversion, resulting from the thermal reaction. HBEA exhibits a good conversion and selectivity on 4-TBC through the transalkylation of DTBC and catechol. The super acid sulfated zirconia, SO4/ZrO2 due to its strong acidity, favors the dealkylation and disproportionation of 4-TBC or/and DTBC, preventing the increase of the selectivity on 4-TBC.
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