Metallic oxide-modified sulfated zirconia: an environment-friendly solid acid catalyst

Metallic oxides were introduced into the synthesis of sulfated zirconia. Catalytic activity was tested by an olefin removal reaction.

Morphology controlled phosphate grafted SnO2–ZrO2 nanocomposite oxides prepared by a urea hydrolysis method as efficient heterogeneous catalysts towards the synthesis of 3-substituted indoles

In this study, a series of phosphate grafted SnO₂–ZrO₂ nanocomposite oxides are prepared via the urea hydrolysis method and evaluated as catalyst for synthesis of 3-substituted indoles.