Reductive CO2 Fixation by N-Formylation Reaction over Supported Pt Nanoparticle Catalyst Modified with Basic Polyoxometalates
S. Kikkawa, Y. Matsunaga, S. Fukuda, S. Yamazoe
Catal. Sci. Technol., accepted.
N-formylation reaction of amines using CO2 as a carbon source is a promising way to utilize CO2 to produce value-added chemicals. We herein developed supported Pt nanoparticle (NP) catalysts with a surface modified with a basic polyoxometalate, [Nb6O19]8−, by a simple adsorption method. The designed surface efficiently promoted the reductive CO2 fixation by N-formylation reaction of secondary amines under CO2 and H2 conditions. The interface between the modified basic [Nb6O19]8− and Pt NP surface facilitated the hydrogenation of carbamate intermediates by the bifunctionality of H2 activation and basicity. This work demonstrated that Pt NP surface design by a bottom-up modification with basic polyoxometalates facilitated N-formylation reaction using CO2 as a carbon source without the addition of any external base.