TY - JOUR T1 - CO2 hydrogenation to formate by palladium nanoparticles supported on N-incorporated periodic mesoporous organosilica JF - ACS Sustainable Chemistry & Engineering Y1 - 2020 A1 - Betsy, K. J. A1 - Lazar, Anish A1 - Pavithran, Anjuna A1 - Vinod, C. P. KW - CO2 hydrogenation KW - Formic acid synthesis KW - Hybrid silica KW - Pd nanoparticles KW - PMO AB -

Development of a heterogeneous catalyst capable of selective transformation of CO2 to valuable products still remains a challenge. In this article, we account for the surfactant-directed synthesis of a new framework-incorporated nitrogen-containing periodic mesoporous organosilica nanosphere (NPMO). A thoroughly characterized N-incorporated hybrid PMO was utilized as a platform for stabilizing well-dispersed and easily accessible Pd nanoparticles (Pd-NPMO) without using any stabilizing agents or expensive dendrimers. Further, this bifunctional hybrid catalyst has been demonstrated to heterogeneously catalyze aqueous phase CO2 hydrogenation (CO2/H-2 ratio 1:3) for the direct synthesis of formate under 4 MPa pressure and at 100 degrees C. To validate the superior performance of the Pd-NPMO catalyst, we compared the activity with Pd-SBA-15 catalysts, and the results showed a 10-fold increase in turnover frequency of 108 h(-1) using Pd on NPMO which envisaged the crucial role of nitrogen sites in this catalyst to boost the CO2 valorization to formate.

VL - 8 IS - 39 U3 -

Foreign

U4 -

7.632

ER -