Optimization of the Zr-loading on siliceous support catalysts leads to a suitable Lewis/Brønsted acid sites ratio to produce high yields to γ-valerolactone from furfural in one-pot

•Zr on a suitable siliceous support produces high yields (72%) to γ-valerolactone.•Lewis sites of ZrO2 plus OH surface groups generate Brønsted sites.•Controlling the amount of Zr, the Lewis/Brønsted ratios can be optimized.•High yields to γ-valerolactone from furfural in one-pot using mild conditions.