An efficient catalyst COK-15b for the catalytic synthesis of lubricating ester oils

Abstract The new material MOF of (CTA) 1/3 [Cu 46 (C 9 H 3 O 6 ) 24 (OH) 12 ] (PW 12 O 40 ) 3 ·xH 2 O (COK-15b) was synthesized via a dual-templating approach and exhibited high activity and selectivity for the esterification of pentaerythrotol with fatty acids at stoichiometric ratio to the corresponding pentaerythrotol tetra-esters with up to 98% yields under solvent-free conditions. The COK-15b was characterized by TEM, SEM, TG, BET, TPD and Py-IR. Moreover, the stability of COK-15b was investigated, and it can be reused for 5 running cycles without significant deactivation.