Identification of chemicals resulted in selective glycerol conversion as sustainable fuel on Pd-based anode nanocatalysts

Abstract

International audiencePalladium-based nanoparticles were prepared using mild microwave-assisted heating. The activity of carbon supported PdM (M = Mn and Fe) toward glycerol oxidation in alkaline medium was studied by coupling electrochemical, analytical and in situ spectroscopic techniques. The complementary findings showed that glycerol was converted into oxalate, tartronate, glycerate, glycolate and formate. The ex situ analytical methods (liquid chromatography and mass spectrometry) were helpful to reveal glycerate as the major reaction product on PdM/C anodes, while from in situ infrared spectroscopy measurements no irreversible adsorbed poisoning species was detected in glycerol or intermediate oxidation to carbonate at the prepared electrodes. The correlation of the analytical and physicochemical (XRD, EDX and TEM) results concerned the shift of the onset potential toward lower values and the high Faradaic currents due to electronic structures provided by the Mn and Fe contents to the Pd based materials. Accordingly, glycerol is a sustainable raw material, which can be used in cogeneration processes for renewable energy sources and selective production of added-value molecules

Fast and Controlled Decorating of Metallic Nanoparticles Using Wall‐jet Configuration

“…One of the main interests in the electrocatalysis field is to develop materials applied to fuel cells , biofuel cells , and electrolysers to obtain highly valuable compounds and sensors . Such materials are produced in an attempt to improve electrocatalytic and sensibility properties, which depend on the balanced control of their morphology, composition and physical structure.…”

“…We took advantage of the already well‐developed field of batch injection analysis (BIA) to adapt an amperometric cell in wall‐jet configuration for our purposes. Fig.…”

Enhanced Catalytic Glycerol Oxidation Activity Enabled by Activated‐Carbon‐Supported Palladium Catalysts Prepared through Atomic Layer Deposition

“…Table S1 (SI) presents a relevant comparison of carbon supported Pd catalysts performance for glycerol electrooxidation reaction in alkaline media. The results from the normalization by either the geometric surface area (Figure S6a) or ECSA of Pd (Figure S6b) show that the present ACF@Pd300 material outperforms most of the data reported for monometallic Pd ,,,,,,…”

Unexpected Activity for Glycerol Electro‐Oxidation of Nanostructured Pd−Pt and Pd−Pt−Ru Catalysts

“…As can be seen, four main absorption bands, coming from the glycerol oxidative conversion at the surface of Pd containing electrode materials, appear in the spectral domain of 2000-1000 cm À1 . [40,41] In all these spectra, the band at ca. [40,41] In all these spectra, the band at ca.…”