Affiliation:
1. Beijing National Laboratory for Molecular Sciences Key Laboratory of Colloid and Interface and Thermodynamics Center for Carbon Neutral Chemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
2. School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
3. Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 China
Abstract
AbstractCatalytic hydrogenation of carbon dioxide (CO2) for the preparation of higher carboxylic acids is attractive and promising. Herein, we demonstrate a general strategy for producing higher carboxylic acids via reaction of CO2 and H2 with light (C2~C4) oxygenates such as ketones, alcohols, polyols, ethers and epoxides. In a green solvent consisting of ionic liquid (1‐ethyl‐3‐methylimidazolium iodide) and water, the reaction can be efficiently accelerated by RhI3 catalyst and I2 promoter at 170 °C. Very high or remarkable yields of higher carboxylic acids were synthesized via C−C bond formation between the intermediates generated from the oxygenates and CO2. Detailed study indicated that the catalyst and the solvent had excellent synergistic effect for promoting the reaction. The strategy can effectively convert the bulk and inexpensive feedstocks to value‐added carboxylic acids, and therefore is promising for commercial application.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China