Work

Selective Conversion of Carbon Dioxide to Acetic Acid over Thermally Transformed Co and Co–Ni ZIF-67 Catalysts

Year: 2025

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Carbon dioxide utilization is essential for reducing our carbon footprint, and significant efforts are needed to use CO 2 as a feedstock to generate value-added chemicals. Acetic acid, a vital bulk chemical used in several industries, is industrially produced through the methanol carbonylation process. While some progress has been made toward hydrocarboxylation of methanol to acetic acid, which utilizes methanol and CO 2 as reactants, a direct pathway to convert CO 2 without an additional carbon source remains a significant challenge. Here, we demonstrate that thermally transformed Co and Co–Ni ZIF-67 exhibit hydrogenation and C–C coupling activities, converting CO 2 to acetic acid via a formate intermediate in aqueous media. Bimetallic Co–Ni ZIF-67 with Co:Ni = 1:2, thermally transformed at 280 °C, proved to be the best catalyst due to the presence of mixed oxidation state of Co 2+ and Co 0 sites, which provide the bifunctional activity of CO 2 reduction and C–C coupling.

Source: Energy & Fuels

DOI: 10.1021/acs.energyfuels.5c03071

Authors: Rajan Lakshman, Swarit Dwivedi, Sanje Mahasivam, Alan Chaffee, Akshat Tanksale

Institution: Monash University

Language: English

Topic: Carbon dioxide utilization in catalysis

Subfield: Process Chemistry and Technology

Field: Chemical Engineering

Domain: Physical Sciences

SDGs: Climate action, Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $4,500