Esterification of fluorinated aromatic carboxylic acids with methanol by using UiO-66-NH₂ as a heterogeneous catalyst and process optimization by the Taguchi method.

ABSTRACT: Fluorobenzoic acids (FBAs) are used as chemical tracers in enhanced oil recovery and reduction in their limit of detection is a crucial issue. GC-MS is a versatile tool to detect and quantify FBAs at very low limits of concentration, but they require esterification prior to analysis by GC-MS. The present article presents a study of the catalytic methyl esterification of fluorinated aromatic carboxylic acids (FBAs) using methanol as methyl source and UiO-66-NH₂ as a heterogeneous catalyst. The reaction time was reduced to 10 hours which is a 58% reduction in time over the traditional BF₃·MeOH complex as derivatizing agent. The yield of the esterification reaction was evaluated with respect to the BF₃-MeOH complex and determined by GC-EI-MS. The catalytic pro

SUBMITTER: Kumar A 

PROVIDER: S-EPMC10236933 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature