Synthesis and Initial Evaluation of Solid Acid Catalyst Derived from Spent Coffee Grounds for the Esterification of Oleic Acid and Methanol

Ramelito C. Agapay, Hsin-Chen Liu, Yi‐Hsu Ju, Alchris Woo Go, Artik Elisa Angkawijaya, Phuong Lan Nguyen, Chi Thanh Truong, Kristelle L. Quijote