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Direct Synthesis of Methyl Formate from CO 2 With Phosphine‐Based Polymer‐Bound Ru Catalysts
Author(s) -
Sun Ruiyan,
Kann Anna,
Hartmann Heinrich,
Besmehn Astrid,
Hausoul Peter J. C.,
Palkovits Regina
Publication year - 2019
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201900808
Subject(s) - formate , formic acid , catalysis , methyl formate , phosphine , chemistry , polymer , reaction mechanism , organic chemistry , polymer chemistry
Methyl formate was produced in one pot through the hydrogenation of CO 2 to formic acid/formate followed by an esterification step. The route offers the possibility to integrate renewable energy into the fossil‐based chemical value chain. In this work, a phosphine‐polymer‐anchored Ru complex was shown to be an efficient solid catalyst for the direct hydrogenation of CO 2 to methyl formate. The 1,2‐bis(diphenylphosphino)ethane‐like polymer presented the highest activity with a turnover number (TON) of up to 3401 at 160 °C. The reaction parameters were systemically investigated to optimize the reaction towards the formation of methyl formate. This catalyst could be reused seven times without a significant decrease in activity. Evolution of the catalytic Ru center during the reaction was revealed, and a possible reaction mechanism was proposed.