Keggin-structure heteropolyacid supported on alumina to be used in trans/esterification of high-acid feedstocks.

ABSTRACT: Heteropolyacids (HPA) with Keggin structures, such as H₃PMo₁₂O₄₀ (H₃PMo), have been described as efficient catalysts in trans/esterification reactions due to their tolerance to water and free fatty acids contents, with particularly well-suited characteristics of high proton mobility and stability. The versatile array of HPA is considerably increased when such catalysts are supported onto solid matrices. In this sense, Al₂O₃ was assessed as support for H₃PMo to be used in trans/esterification reactions to produce biodiesel from high-acid feedstocks. The catalyst structure was characterized and applied on trans/esterification reaction of acid oils using ethanol as acyl acceptor. A face centered composite design was

SUBMITTER: da Conceicao LRV 

PROVIDER: S-EPMC9069312 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature