Methylformate from CO₂: an integrated process combining catalytic hydrogenation and reactive distillation

Abstract

Catalyst immobilization in decane and repetitive hydrogenation of CO2 to HCOOH-amine with subsequent reactive distillation of the resulting methanolic solution.

Influence of Reaction Conditions on the Settling Behavior of Liquid‐Liquid Dispersions

“…This implies a decrease of the UCST and an increase of the settling time in the investigated temperature range. The further components 1,2-DMI and FA decrease the cross solubility of MeOH and Dec and mainly stay in the MeOH-rich product phase [5].…”

“…This implies a decrease of the UCST and an increase of the settling time in the investigated temperature range. The further components 1,2‐DMI and FA decrease the cross solubility of MeOH and Dec and mainly stay in the MeOH‐rich product phase . The addition of CO 2 had only a minor influence on settling time indicating that CO 2 in the quinary mixture does not affect the physicochemical properties as much as in the ternary mixture.…”

“…By replacing intermediates refined from fossil resources, the resource efficiency of the carbon cycle in chemical synthesis can be improved. A possible reaction route is the already well investigated reaction of hydrogen (H 2 ) with CO 2 to formic acid (FA) : …”

“…This hydrogenation reaction can be homogeneously catalyzed by a liquid catalytic phase containing a dissolved ruthenium‐based catalyst with bis(diphenylphosphino) methane ligands tailored with long alkyl chains . A suitable solvent for the liquid catalytic phase is n ‐decane (Dec).…”

“…Within the framework of the project Carbon2Chem, methanol (MeOH) was chosen as the solvent of the product phase and 1,2‐dimethylimidazole (1,2‐DMI) as the product stabilizer. In laboratory scale experiments with this specified system, high total turnover numbers up to 38 000 and turn‐over frequencies up to 1400 h −1 were achieved at mild reaction temperatures ( T R ≈ 333–338 K) .…”