Keggin tungstophosphoric acid (H 3PW 12O 40, HPW) was immobilized onto Santa Barbara Amorphous (SBA-15) type silica to obtain selective catalysts for the resorcinol tert-butylation with methyl-tert-butyl ether. The challenge was to enhance the reaction selectivity to the mono-alkylated product i.e. 4-tert-butylresorcinol at the expenses of other more thermodynamically favored products as the 4,6-di-tert-butylresorcinol. Using HPW@SBA15 catalysts, remarkable selectivity to 4-tert-butylresorcinol was obtained, up to 42% (at 20% of resorcinol conversion). Our finding is that the change in the product distribution was dependent on the catalyst surface chemistry: 4TBR selectivity can be increased adjusting the fraction of Brønsted acid sites versus Lewis ones at the catalyst surface.

Original languageEnglish
Pages (from-to)198-211
Number of pages14
JournalJournal of Catalysis
Volume359
DOIs
Publication statusPublished - Mar 2018

    Research areas

  • 4-tert-Butyl resorcinol, Alkylation, Heteropolyacids, Keggin, Methyl-tert-butyl ether, SBA-15

ID: 36818467