This work studies the behavior of a series of Pd/C3N4 catalyst in the reaction of formic acid dehydrogenation and the use of the latter as H-donor for 2,5-hydroxymethyl furfural hydrodeoxygenation. Firstly, a series of supports have been synthesized from melamine and urea as a function of precursors ratio and temperature of their condensation. The different…
Herein we report a green mechanochemical synthesis with low energy input of dual-function materials for integrated CO2 capture and dry reforming of methane. The materials produced syngas during the CH4 step (up to 0.6 mmol g−1 CO and 7.7 mmol g−1 H2) and CO during the CO2 step (up to 3.1 mmol g−1) via the reverse Boudouard reaction due to the carbon…
Carbon nitride, C3N4, was synthesized through thermal polycondensation of melamine with varying temperature and time conditions. This approach represents a cost-effective, straightforward, and environmentally friendly synthetic method with lower energy consumption to obtain hierarchically structured carbon nitride. The resulting materials were subjected to comprehensive characterization to analyze their crystalline structure, textural properties, composition, and light…
Single-atom catalysts (SACs) have emerged as a promising class of materials, leveraging the benefits of both homogeneous and heterogeneous catalysis to enhance efficiency and selectivity. In this work we have investigated the catalytic performance of SACs supported on graphitic carbon nitride (g-C3N4) for hydroformylation reactions. A systematic evaluation of nine transition metal SACs (Fe, Ru,…
Two series of functionalized activated carbons have been prepared and used for the glucose to fructose isomerization reaction. Alkali earth chlorides and alkali halides have been chosen for the functionalization with the final goal to study the effect of cation and anion variation on isomerization activity. A part of the samples has been subjected to…
Leaching is a pretreatment that removes ionic species responsible for undesired reactions during biomass thermochemical transformation. Despite numerous reported leaching conditions, the impact of specific factors on ionic species removal remains insufficiently understood for widespread application. This study investigates the relationship between experimental factors and their optimal levels in aqueous medium, focusing on the effects…
A novel and straightforward one-step method has been developed for the controlled deposition of gold nanoparticles (AuNPs) with uniform diameters onto the titanosilicate (TS-1) zeolitic surface via a direct anionic exchange (DAE) approach. This innovative process simultaneously introduces auxiliary mesoporosity into the zeolite framework, overcoming critical limitations associated with traditional microporous catalysts, including diffusion constraints…
Microplastics are an emerging pollutant of concern. Many microplastics in the waters arise from washing synthetic textiles in residential and commercial washing machines. The present research evaluated the upcycling of this waste to carbon materials by hydrothermal carbonization. Real microfiber waste was collected using clothes washer and dryer microfilters. Via temperature and residence time screening…
The utilization of nickel-ruthenium as bimetallic catalysts is widely recognized for its efficacy in enhancing the catalytic performance in the carbon dioxide methanation reaction. The present study focuses on the synergistic interplay between both active sites and their respective roles in the reaction mechanism through operando DRIFT-MS analysis. Findings reveal that the bimetallic catalyst is…
