Catalysis Communications (Sep 2023)

A novel Cu-based catalyst supported in chitosan nanoparticles for the hydrogenation of carbon dioxide to methanol: From the optimization of the catalyst performance to the reaction mechanism

  • Seyed Alireza Vali,
  • Ahmad Abo Markeb,
  • Javier Moral-Vico,
  • Xavier Font,
  • Antoni Sánchez

Journal volume & issue
Vol. 182
p. 106747

Abstract

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Chitosan nanoparticles were used as a support for the Cu-based catalyst to convert carbon dioxide to methanol under mild conditions. A statistically significant model for space-time yield (STY) and selectivity as a function of synthesis-related parameters was achieved, predicting optimal values of pH, Cu and chitosan concentrations to be 9.3, 0.088 M and 0.01 M, respectively. A STY of 92.44 mgmethanol gcatalyst−1 h−1 and a selectivity higher than 90% were obtained. A constant reaction yield was obtained for 140 min and the STY only decreased by 18%. Catalyst's reusability was demonstrated for three cycles with a 20% of STY loss.

Keywords