Cu/zirconium organophosphonate as bifunctional catalysts for the one-pot conversion of furfural to γ-valerolactone
Zirconium organophosphonate(ZrATMP)was synthesized using zirconium dichloride oxide octahydrate and nitrilotris(methylene)-triphosphonic acid,and then Cu component was loaded to prepare Cu/ZrATMP catalyst.The effects of the preparation conditions for catalyst and the catalytic performance of the catalyst in the one-pot conversion of furfural to γ-valerolactone were studied.The results showed that ZrATMP with Lewis acid and Brønsted acid sites exhibited extremely low catalytic activity for the conversion of furfural to γ-valerolactone.The loading of Cu component caused the formation of a strong acid center and further enhanced the Lewis acid sites.Compared with ZrATMP,Cu/ZrATMP with the Cu metal center and the Lewis/Brønsted acid center exhibited higher catalytic activity for the conversion of furfural to γ-valerolactone.
Furfuralγ-ValerolactoneZirconium organophosphonateMetal centerAcid center