Zirconia supported phosphotungstic acid as an efficient catalyst for resorcinol tert-butylation and n-heptane hydroisomerization

Role of Lewis and Brønsted acid sites in resorcinol tert-butylation over heteropolyacid-based catalysts

Investigating Keggin heteropolyacid embedded in SiO₂, TiO₂ and ZrO₂ showed that both Brønsted (B) and Lewis (L) acid sites are needed to achieve the alkylation of resorcinol with MTBE. An optimum B to L site ratio allows maximizing the performance.

Sulfated zirconia: an efficient catalyst for the Friedel–Crafts monoalkylation of resorcinol with methyl tertiary butyl ether to 4-tertiary butylresorcinol

Sulfated zirconia (SZ) is an efficient and recyclable catalyst in the selective monoalkylation of resorcinol with MTBE to 4-tertiary butyl resorcinol at low temperature (60 °C).