UiO-67(Hf) metal–organic framework as an efficient catalyst for the transfer hydrogenation of ethyl levulinate to γ-valerolactone. - Ciptonugroho, Wirawan; Anggraini, Dika Febrianti; Saputra, Vito Bintang; Azhari, Fauziyah; Arrozi, Ubed S. F.; Budiman, Yudha P.; Lee, Hwei Voon; Lestari, Witri Wahyu (Research on Chemical Intermediates, 2026)