Tailoring Lewis/Brønsted Acid Properties of MOF Nodes Hydrothermal and Solvothermal Synthesis: Simple Approach with Exceptional Catalytic Implications

Overview

Journal Chem Sci

Publisher Royal Society of Chemistry

Specialty Chemistry

Date 2021 Aug 5

PMID 34349973

Citations 8

Authors

Sergio Rojas-Buzo

Benjamin Bohigues

Christian W Lopes

Debora M Meira

Mercedes Boronat

Manuel Moliner

Avelino Corma

Affiliations

Soon will be listed here.

Abstract

The Lewis/Brønsted catalytic properties of the Metal-Organic Framework (MOF) nodes can be tuned by simply controlling the solvent employed in the synthetic procedure. In this work, we demonstrate that Hf-MOF-808 can be prepared from a material with a higher amount of Brønsted acid sites, modulated hydrothermal synthesis, to a material with a higher proportion of unsaturated Hf Lewis acid sites, modulated solvothermal synthesis. The Lewis/Brønsted acid properties of the resultant metallic clusters have been studied by different characterization techniques, including XAS, FTIR and NMR spectroscopies, combined with a DFT study. The different nature of the Hf-MOF-808 materials allows their application as selective catalysts in different target reactions requiring Lewis, Brønsted or Lewis-Brønsted acid pairs.

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