Modulation of Self-Separating Molecular Catalysts for Highly Efficient Biomass Transformations.

ABSTRACT: The energetically viable fabrication of stable and highly efficient solid acid catalysts is one of the key steps in large-scale transformation processes of biomass resources. Herein, the covalent modification of the classical Dawson polyoxometalate (POMs) with sulfonic acids (-SO₃ H) is reported by grafting sulfonic acid groups on the POM's surface followed by oxidation of (3-mercaptopropyl)trimethoxysilane. The acidity of TBA₆ -P₂ W₁₇ -SO₃ H (TBA=tetrabutyl ammonium) has been demonstrated by using ³¹ P NMR spectroscopy, clearly indicating the presence of strong Brønsted acid sites. The presence of TBA counterions renders the solid acid catalyst as a promising candidate for phase transfer catalytic processes. The TBA_6</

SUBMITTER: Lian L 

PROVIDER: S-EPMC7540606 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature