%0 Journal Article %J ACS Sustainable Chemistry & Engineering %D 2020 %T CO2 hydrogenation to formate by palladium nanoparticles supported on N-incorporated periodic mesoporous organosilica %A Betsy, K. J. %A Lazar, Anish %A Pavithran, Anjuna %A Vinod, C. P. %K CO2 hydrogenation %K Formic acid synthesis %K Hybrid silica %K Pd nanoparticles %K PMO %X

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.

%B ACS Sustainable Chemistry & Engineering %V 8 %P 14765-14774 %8 OCT %G eng %N 39 %9 Article %3

Foreign

%4

7.632

%R 10.1021/acssuschemeng.0c03860